CN215642150U

CN215642150U - Liquid crystal display device and functional film thereof

Info

Publication number: CN215642150U
Application number: CN202121324105.4U
Authority: CN
Inventors: 陈健立; 林汉良
Original assignee: Truly Opto Electronics Ltd
Current assignee: Truly Opto Electronics Ltd
Priority date: 2021-06-15
Filing date: 2021-06-15
Publication date: 2022-01-25
Anticipated expiration: 2031-06-15

Abstract

The utility model discloses a liquid crystal display device and a functional film thereof, wherein the functional film comprises: a functional film main body; the heavy release film is attached to the functional film main body, wherein a pair of diagonal positions are provided with MARK contraposition MARKs, one diagonal position of the other pair of diagonal positions is provided with a positive and negative identification MARK, and the shape of the MARK contraposition MARK is different from that of the positive and negative identification MARK. In the utility model, whether the functional film main body is correctly placed in the up-down direction or not can be quickly identified through the positive and negative identification marks; the up-down direction is judged together through the counting and the graph recording, more firm memory can be provided, the possibility of misplacing the up-down direction due to error recording is reduced, and great help is provided for the improvement of production efficiency and processing yield when the film is automatically pasted.

Description

Liquid crystal display device and functional film thereof

Technical Field

The utility model relates to the technical field of liquid crystal display, in particular to a liquid crystal display device and a functional film thereof.

Background

Functional films (e.g., OCA optical cement, polarizer, AG film, etc.) are one of the important components of liquid crystal display devices, and their film sticking efficiency, film sticking azimuth accuracy, etc. are concerned about the performance of liquid crystal display devices, the manufacturing cost, etc.

At present, the functional film is aligned through MARK points during film pasting, for example, a patent with publication number CN205603499U discloses an OCA optical cement, which comprises a heavy release film, an optical cement film and a light release film which are sequentially arranged from top to bottom, wherein a MARK point is respectively arranged on four L corners of the heavy release film, and the problem of abnormal positioning during TP pasting can be accurately solved through the heavy MARK points on the release film. However, the four MARK points of the OCA optical cement have the same structure, and the front and the back of the OCA optical cement in the vertical direction cannot be distinguished through the MARK points.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a liquid crystal display device and a functional film thereof, which are used for solving the problem that the functional film does not have positive and negative identification marks in the prior art.

In order to solve the problems, the utility model adopts the following technical scheme:

provided is a functional film for a liquid crystal display device, including:

a functional film main body;

the heavy release film is attached to the functional film main body, one pair of diagonal positions of the heavy release film is provided with a MARK (MARK in place) and the other pair of diagonal positions is provided with a positive and negative identification MARK, wherein the shape of the MARK registration MARK is different from that of the positive and negative identification MARK.

Optionally, the MARK for MARK alignment is a first hollow ring, and the MARK for positive and negative identification is a second ring with a cross structure in the middle.

Optionally, the two cross lines of the cross structure extend to intersect with the second circular ring, an intersection point of the two cross lines is perpendicular to two straight lines formed by circle centers of the two first circular rings, and the two cross lines are overlapped with the corresponding straight lines.

Optionally, the inner diameter of the second ring is greater than the inner diameter of each of the first rings, and the line width of the second ring and the line width of the two intersecting lines are both less than the line width of the first ring.

Optionally, the ratio of the inner diameter of the second ring to the inner diameter of the first ring is 3-4: 1.

Optionally, the diameter of the inner diameter of the first circular ring is 0.5-0.8 mm.

Optionally, the functional film body is an OCA optical cement, a polarizer, an AG film, an AR film, an AF film or an explosion-proof film.

Optionally, the area of the heavy release film is greater than or equal to the area of the functional film main body.

Optionally, the functional film further comprises a light release film attached to the other surface of the functional film main body.

Also provided is a liquid crystal display device comprising the functional film described in any one of the above.

The technical scheme adopted by the utility model can achieve the following beneficial effects:

after the positive and negative identification MARKs are arranged, when the functional film is attached, according to the pre-convention, for example, one side provided with the MARK alignment MARK and the positive and negative identification MARKs faces the upper end, so that whether the upper and lower positions of the functional film main body are correctly placed or not can be determined. For four corners all set up MARK counterpoint, can discern fast through positive and negative discernment MARK whether function membrane main part is placed correctly in the upper and lower direction. Compared with the method that two different MARK alignment MARKs are arranged at opposite angles, the method that the MARK alignment MARKs are positioned and the up-down direction is determined through the counting and the recording graph can provide firmer memory and reduce the possibility of misplacement of the up-down direction caused by error recording. When the automatic pad pasting, all have very big help to the promotion of production efficiency, processing yield.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below to form a part of the present invention, and the exemplary embodiments and the description thereof illustrate the present invention and do not constitute a limitation of the present invention. In the drawings:

FIG. 1 is a schematic structural diagram of a functional film disclosed in an embodiment of the present invention;

FIG. 2 is an enlarged view of a functional film disclosed in an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a MARK alignment MARK disclosed in the embodiments of the present invention;

fig. 4 is a schematic structural diagram of a positive and negative identification target disclosed in the embodiment of the present invention.

Wherein the following reference numerals are specifically included in figures 1-4:

a functional film body-1; heavy release film-2; MARK para-position MARK-3; positive and negative identification mark-4.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the specific embodiments of the present invention and the accompanying drawings. It is to be understood that the described embodiments are merely exemplary of the utility model, and not restrictive of the full scope of the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 and 2, the functional film of the present invention includes a functional film main body 1 and a heavy release film 2 attached to the functional film main body 1. The functional film body 1 may be an OCA optical adhesive, a polarizer, an AG (anti-glare) film, an AR (anti-reflection) film, an AF (anti-fingerprint) film, an explosion-proof film, or the like. One pair of diagonal positions of the heavy release film 2 is provided with a MARK 3, one diagonal position of the other pair of diagonal positions is provided with a positive and negative identification MARK 4, wherein the shape of the MARK 3 is different from that of the positive and negative identification MARK 4, namely, three corners of the heavy release film 2 are provided with MARKs, two MARKs at the diagonal positions are the same, and the MARK at the other corner position is different.

After the positive and negative identification MARKs 4 are provided, when the functional film is attached, according to a predetermined convention, for example, it may be determined that the side on which the MARK alignment MARK 3 and the positive and negative identification MARKs 4 are provided is directed toward the upper end, so as to determine whether the upper and lower positions of the functional film body 1 are correctly placed. For all setting up MARK register MARK 3 for four corners, can discern fast through positive and negative discernment MARK 4 whether function membrane main part 1 is placed correctly in upper and lower direction. Compared with the method that two different MARK alignment MARKs 3 are arranged at opposite angles, the MARK alignment MARKs 3 are positioned and the up-down direction is determined, the up-down direction is determined through the number and the recording pattern, firmer memory can be provided, and the possibility of misplacement of the up-down direction caused by error recording is reduced. When the automatic pad pasting, all have very big help to the promotion of production efficiency, processing yield.

Further, as shown in fig. 3, the MARK 3 is a first hollow ring, and as shown in fig. 4, the positive and negative identification MARK 4 is a second ring with a cross structure. When the functional film deflects, the alignment point on the film sticking machine is dislocated with the two crossed lines of the cross structure, and is not on the two crossed lines, and the larger the dislocation degree is, the larger the deflection degree of the functional film is. Therefore, the functional film can be positioned in each direction by matching the positive and negative identification MARKs 4 with the MARK alignment MARKs 3 according to the deflection degree of the cross-shaped structure alignment functional film, and the positioning precision is high and the structure is simple. The structures of the first circular ring, the cross structure and the second circular ring can be specifically set according to requirements.

In one example, two intersecting lines forming a cross structure have their respective ends extended to intersect the second circular ring, and the intersection of the two intersecting lines is perpendicular to two straight lines formed by the centers of the two first circular rings, and the two intersecting lines coincide with the respective straight lines. And the inner diameter of the second ring is larger than that of each first ring, and the line width of the second ring and the line width of the two crossed lines are smaller than those of the first rings. In a preferred example, the ratio of the inner diameter of the second ring to the inner diameter of the first ring is 3-4:1, and the inner diameter of the first ring is 0.5-0.8 mm. By the arrangement, higher positioning precision can be realized through the second circular ring and the first circular ring, and the possibility of abnormal positioning of the functional membrane is reduced; and when the functional film deflects, the position of the functional film can be quickly adjusted conveniently through the second circular ring and the first circular ring.

In addition, the area of the heavy release film 2 can be larger than that of the functional film body 1, or can be the same as that of the functional film body 1, so that the functional film can be applied to more occasions.

The functional film also comprises a light release film attached to the other surface of the functional film main body 1, and the functional film main body 1 is protected by the light release film before the functional film main body 1 is attached.

The liquid crystal display device of the present invention may be a Touch Panel (TP), a TFT display module, a liquid crystal electronic device, or the like. In this liquid crystal display device, after the front/back identification MARK 4 is provided, when the functional film is attached, it is determined whether the upper/lower position of the functional film body 1 is correctly placed by, for example, specifying that the side on which the MARK alignment MARK 3 and the front/back identification MARK 4 are provided is directed to the upper end in advance. For all setting up MARK register MARK 3 for four corners, can discern fast through positive and negative discernment MARK 4 whether function membrane main part 1 is placed correctly in upper and lower direction. Compared with the method that two different MARK alignment MARKs 3 are arranged at opposite angles, the MARK alignment MARKs 3 are positioned and the up-down direction is determined, the up-down direction is determined through counting and graphic recording, firmer memory can be provided, and the possibility of misplacement of the up-down direction caused by error recording is reduced.

While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the utility model as defined in the appended claims.

Claims

1. A functional film for a liquid crystal display device, comprising:

a functional film main body;

2. The functional film for a liquid crystal display device of claim 1, wherein the MARK alignment MARK is a first circular ring having a hollow shape, and the front and back identification MARKs are second circular rings having a cross-shaped structure in the middle.

3. The functional film for a liquid crystal display device according to claim 2, wherein each of two intersecting lines of the cross structure extends to intersect with the second circular ring, and an intersection of the two intersecting lines is perpendicular to two straight lines formed by centers of the two first circular rings, and the two intersecting lines coincide with the corresponding straight lines.

4. The functional film for a liquid crystal display device according to claim 3, wherein an inner diameter of the second ring is larger than an inner diameter of each of the first rings, and a line width of the second ring and a line width of two of the intersecting lines are each smaller than a line width of the first ring.

5. The functional film for a liquid crystal display device according to claim 4, wherein a ratio of an inner diameter of the second ring to an inner diameter of the first ring is 3-4: 1.

6. The functional film for a liquid crystal display device according to claim 5, wherein an inner diameter of the first ring is 0.5 to 0.8 mm.

7. The functional film for a liquid crystal display device according to any one of claims 1 to 6, wherein the functional film main body is an OCA optical adhesive, a polarizer, an AG film, an AR film, an AF film, or an explosion-proof film.

8. The functional film for a liquid crystal display device according to any one of claims 1 to 7, wherein an area of the heavy release film is greater than or equal to an area of the functional film main body.

9. The functional film for a liquid crystal display device according to any one of claims 1 to 7, further comprising a light release film attached to the other surface of the functional film main body.

10. A liquid crystal display device comprising the functional film according to any one of claims 1 to 9.