CN220020031U

CN220020031U - Cover plate with optical cement

Info

Publication number: CN220020031U
Application number: CN202320888450.3U
Authority: CN
Inventors: 林荣利; 康飞旺; 郑怀玺; 胡湘
Original assignee: Xinli Photoelectric Renshou Co Ltd
Current assignee: Xinli Photoelectric Renshou Co Ltd
Priority date: 2023-04-19
Filing date: 2023-04-19
Publication date: 2023-11-14
Anticipated expiration: 2033-04-19

Abstract

The utility model discloses a cover plate with optical cement, which comprises a cover plate body, an ink layer, optical cement and a release film, wherein the cover plate body comprises a visible area and a non-visible area; the ink layer is arranged on the lower surface of the cover plate body and is positioned in the invisible area; the optical adhesive is coated on the lower surface of the cover plate body positioned in the visible area, the optical adhesive extends to and covers the lower surface of the ink layer close to the visible area, the ink layer far away from the visible area is not covered by the optical adhesive and forms an empty layer area, and the lower surface of the optical adhesive forms a smooth surface; the release film is arranged on the lower surface of the optical cement. Therefore, the lower surface of the optical cement has no height difference, so that bubbles and edge macula lutea can not be generated when the cover plate body is attached to the display module.

Description

Cover plate with optical cement

Technical Field

The utility model relates to the technical field of liquid crystal display, in particular to a cover plate with optical cement.

Background

The conventional liquid crystal display screen generally comprises a cover plate, a display module and a backlight module, wherein the cover plate is fully attached to the display module through an optical adhesive tape, a black ink layer is generally screen-printed in a non-visible area on the lower surface of the cover plate, the optical adhesive tape is generally attached to the visible area and covers the lower portion of the black ink layer, the thickness of the black ink layer is uniform, the thickness of the black ink layer is still lower, the black ink layer still has a certain thickness, when the optical adhesive tape covers the lower portion of the black ink layer, a certain height difference exists between the optical adhesive tape positioned in the visible area and the optical adhesive tape positioned below the black ink layer, and therefore bubbles and edge macula are easy to generate when the cover plate is fully attached to the display module, display abnormality of the liquid crystal display screen is caused, the probability of defective products of the liquid crystal display screen is further increased, and the production and manufacturing cost of the liquid crystal display screen is also greatly increased, so that the product competitiveness of the liquid crystal display screen is reduced, and the increasing quality requirements of enterprises cannot be met.

Disclosure of Invention

The utility model aims to solve the technical problem of avoiding the occurrence of height difference after the cover plate is attached to the display module, thereby avoiding the generation of bubbles and edge macula lutea.

The technical problems to be solved by the utility model are realized by the following technical scheme:

in order to solve the technical problems, the utility model provides a cover plate with optical cement, which comprises a cover plate body, an ink layer, optical cement and a release film, wherein the cover plate body comprises a visible area and a non-visible area; the ink layer is arranged on the lower surface of the cover plate body and is positioned in the invisible area; the optical adhesive is coated on the lower surface of the cover plate body positioned in the visible area, the optical adhesive extends to and covers the lower surface of the ink layer close to the visible area, the ink layer far away from the visible area is not covered by the optical adhesive and forms an empty layer area, and the lower surface of the optical adhesive forms a smooth surface; the release film is arranged on the lower surface of the optical cement.

As a preferred embodiment of the cover plate with the optical adhesive, the optical adhesive extends and covers the ink layer with a width of 0.6mm to 0.8mm.

As a preferred embodiment of the cover sheet with optical adhesive provided by the utility model, the thickness of the ink layer is 8 μm to 15 μm.

As a preferred embodiment of the cover plate with the optical adhesive, the thickness of the optical adhesive is 50 μm to 100 μm.

As a preferred implementation mode of the cover plate with the optical cement, the release film is provided with the concave through holes, and the remainder of the concave through holes form a film tearing handle.

As a preferred embodiment of the cover plate with optical cement provided by the utility model, the waste material of the concave-shaped through holes remains on the release film.

As a preferable implementation mode of the cover plate with the optical cement, the waste material of the concave through hole is provided with an adhesive area.

In an preferred embodiment of the cover plate with optical cement provided by the utility model, the upper surface of the cover plate body is provided with a plurality of grooves by etching, the upper side of the cover plate body is covered with a plastic layer, and the plastic layer is embedded into the plurality of grooves.

As a preferable implementation mode of the cover plate with the optical cement, the grooves are closing grooves with narrow outside and wide inside.

As a preferred embodiment of the cover plate with the optical cement, the inner surface of the groove is provided with a surface treatment layer for improving the surface roughness.

The utility model has the following beneficial effects:

because the optical adhesive is directly coated on the lower surface of the cover plate body and extends to the lower surface of the ink layer, instead of directly attaching the optical adhesive to the lower surface of the cover plate body as in the conventional technology, the lower surface of the optical adhesive forms a smooth surface, and the lower surface of the optical adhesive has no height difference, so that bubbles and edge macula do not occur when the cover plate body is attached to a display module, abnormal display of a liquid crystal display screen is avoided, the probability of defective products of the liquid crystal display screen is reduced, and the production and manufacturing cost of the liquid crystal display screen are also greatly reduced, thereby improving the product competitiveness of the liquid crystal display screen, and meeting the increasingly-growing quality requirements of enterprises.

Drawings

In order to more clearly illustrate the solution of the present utility model, a brief description will be given below of the drawings required for the description of the embodiments, it being obvious that the drawings in the following description are some embodiments of the present utility model, and that other drawings may be obtained from these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of a cover plate with optical cement according to the present utility model.

Fig. 2 is a schematic structural diagram of embodiment 2.

Fig. 3 is a top view of fig. 2.

Fig. 4 is a schematic diagram of the improved structure of fig. 3.

Fig. 5 is a schematic structural diagram of embodiment 3.

Fig. 6 is an exploded view of fig. 5.

Fig. 7 is a schematic diagram of the improved structure of fig. 5.

Reference numerals illustrate:

a cover plate body 1; an ink layer 2; an optical adhesive 3; a release film 4;

a "concave" shaped through hole 41; a tear film handle 42; waste material 43; an adhesive region 44;

a groove 11; and a plastic layer 5.

Detailed Description

In order that those skilled in the art will better understand the present utility model, a technical solution in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, shall fall within the scope of the present utility model.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", and "a third" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

The utility model provides a cover plate with optical cement, which comprises a cover plate body, an ink layer, optical cement and a release film, wherein the cover plate body comprises a visible area and a non-visible area; the ink layer is arranged on the lower surface of the cover plate body and is positioned in the invisible area; the optical adhesive is coated on the lower surface of the cover plate body positioned in the visible area, the optical adhesive extends to and covers the lower surface of the ink layer close to the visible area, the ink layer far away from the visible area is not covered by the optical adhesive and forms an empty layer area, and the lower surface of the optical adhesive forms a smooth surface; the release film is arranged on the lower surface of the optical cement.

In order to make the person skilled in the art better understand the solution of the present utility model, the technical solution of the embodiment of the present utility model will be clearly and completely described below with reference to the accompanying drawings. The present utility model is described in detail below with reference to the drawings and the embodiments, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.

Example 1

Referring to fig. 1, the cover plate with optical cement provided by the utility model comprises a cover plate body 1, an ink layer 2, optical cement 3 and a release film 4, wherein the cover plate body 1 comprises a visible area positioned at the middle position and a non-visible area positioned at the outer edge of the visible area; the ink layer 2 is arranged on the lower surface of the cover plate body 1, and the ink layer 2 is arranged in the invisible area; the optical cement 3 is coated on the lower surface of the cover plate body 1 positioned in the visible area, the optical cement 3 extends to and covers the lower surface of the ink layer 2 close to the visible area, the ink layer 2 far away from the visible area is not covered by the optical cement 3 and forms an empty layer area, the optical cement 3 can determine the coating area of the optical cement 3 in a jig-assisted mode, the reserved empty layer area is not coated with the optical cement 3, and the optical cement 3 is used for glue taking when a complete machine is installed, and the lower surface of the optical cement 3 forms a smooth surface; the release film 4 is arranged on the lower surface of the optical cement 3.

Because the optical cement 3 is directly coated on the lower surface of the cover plate body 1 and extends to the lower surface of the ink layer 2, instead of directly attaching the optical cement to the lower surface of the cover plate body 1 as in the conventional technology, the lower surface of the optical cement 3 can form a smooth surface, and the lower surface of the optical cement 3 has no height difference, so that bubbles and edge yellow spots can not be generated when the cover plate body 1 is attached to a display module, abnormal display of a liquid crystal display screen is avoided, the probability of defective products of the liquid crystal display screen is reduced, and the production and manufacturing cost of the liquid crystal display screen are also greatly reduced, thereby improving the product competitiveness of the liquid crystal display screen and meeting the increasingly-growing quality requirements of enterprises.

Further, the optical cement 3 extends and covers the ink layer 2 with a width of 0.6mm to 0.8mm.

Further, the thickness of the ink layer 2 is 8 μm to 15 μm.

Further, the thickness of the optical cement 3 is 50 μm to 100 μm.

Example 2

Referring to fig. 2 to 4, as a further optimization scheme of embodiment 1, in this embodiment, a "concave" shaped through hole 41 is formed on the release film 4, and the remainder of the "concave" shaped through hole 41 forms a film tearing handle 42. Therefore, the film tearing handle 42 is not required to be additionally arranged on the periphery of the release film 4, so that the film tearing handle 42 cannot be placed due to the limitation of peripheral space, the condition that tweezers are required to be used for warping during the limitation of the peripheral space is avoided, and further the labor cost is saved; and the material of the peripheral dyestripping handle 42 can be omitted, so that the material cost can be greatly reduced.

Further, the waste material 43 of the "concave" shaped through hole 41 remains on the release film 4. The waste material 43 remains attached to the release film 4 before the release film 4 is torn off, and dust or other particulate matter is effectively prevented from entering the product surface. Since the waste 43 is further connected to the release film 4, it is difficult to tear the release film handle 42, and therefore, an adhesive area 44, preferably an adhesive, may be disposed on the upper surface of the waste 43, but the waste 43 may be torn by the adhesive when the release film 4 is torn, and the release film 4 is torn by the release film handle 42.

Further, the "concave" through hole 41 is disposed at the edge of the release film 4, so that the release film 4 is easier to tear when being torn, and the tearing handle 42 is prevented from being torn due to higher tearing difficulty.

Further, each corner of the concave through hole 41 is provided with a rounded corner, so that stress during film tearing is not concentrated at the corner, the film tearing handle 42 is prevented from being torn due to stress concentration, and the operation efficiency is further improved.

Example 3

Referring to fig. 5 to 7, as a further optimization scheme of embodiment 1, in this embodiment, a plurality of grooves 11 are formed on the upper surface of the cover plate body 1 by etching, a plastic layer 5 is covered on the cover plate body 1, and the plastic layer 5 is embedded into the plurality of grooves 11. Because the plastic layer 5 is covered above the cover plate body 1, and the plurality of grooves 11 are formed on the upper surface of the cover plate body 1 by etching, and the plastic layer 5 can be embedded into the plurality of grooves 11, the grooves 11 formed by etching enable the inner surface of the grooves 11 to have a certain roughness, and the surface of the grooves 11 with a certain roughness can promote the adhesion force between the grooves 11 and the plastic layer 5, so that the possibility of separating the grooves 11 from the plastic layer 5 is reduced. When the liquid crystal display screen collides or falls, the plastic layer 5 on the upper surface of the cover plate body 1 can directly bear the action of external force, so that the external force can be prevented from directly acting on the cover plate body 1, and as the plastic layer 5 can absorb most of energy, the rest external force acts on the cover plate body 1 very weakly, so that the risk of cracking or damaging the cover plate body 1 can be effectively reduced; and when the liquid crystal display receives the exogenic action, even external force effect is great, also can only harm the plastic layer 5 of apron body 1 upper surface, and can not directly harm apron body 1, consequently can avoid apron body 1 to damage and lead to the unable normal use of liquid crystal display, bring better use experience for the user, improved the anti-drop ability of liquid crystal display.

Further, the shape of recess 11 can be square also can be circular, and the cross sectional shape of recess 11 can be the binding off groove of outer narrow inside wide, and in this embodiment, the cross sectional shape of recess 11 is isosceles trapezoid, and recess 11 is rectangular, and the recess 11 of isosceles trapezoid can make plastic layer 5 firmly imbed in the recess 11, avoids recess 11 and plastic layer 5 to take place the separation to prevent that apron body 1 and plastic layer 5 from taking place the condition emergence that drops, rectangular form recess 11 can increase the laminating part of plastic layer 5 and recess 11, and then improves the laminating dynamics of recess 11 and plastic layer 5.

Further, the depth of the groove 11 is 0.01mm to 0.2mm, in this embodiment, the depth of the groove 11 is preferably 0.1mm, and in other embodiments, the depth of the groove 11 can be freely selected according to actual needs, which falls within the protection scope of the present utility model.

Further, the inner surface of the groove 11 is provided with a surface treatment layer for improving the surface roughness, so as to further improve the bonding capability of the groove 11 and the plastic layer 5 and prevent the cover plate body 1 from being separated from the plastic layer 5.

Further, the recess 11 is located in the non-display area, so as to avoid the recess 11 affecting the normal display of the lcd.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

It is apparent that the above-described embodiments are only some embodiments of the present utility model, but not all embodiments, and the preferred embodiments of the present utility model are shown in the drawings, which do not limit the scope of the patent claims. This utility model may be embodied in many different forms, but rather, embodiments are provided in order to provide a thorough and complete understanding of the present disclosure. Although the utility model has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing description, or equivalents may be substituted for elements thereof. All equivalent structures made by the content of the specification and the drawings of the utility model are directly or indirectly applied to other related technical fields, and are also within the scope of the utility model.

Claims

1. A cover sheet with optical cement, comprising:

a cover body (1) comprising a visible region and a non-visible region;

an ink layer (2) which is arranged on the lower surface of the cover plate body (1) and is positioned in the invisible area;

the optical adhesive (3) is coated on the lower surface of the cover plate body (1) positioned in the visible area, the optical adhesive (3) extends to cover the lower surface of the ink layer (2) close to the visible area, the ink layer (2) far away from the visible area is not covered by the optical adhesive (3) and forms an empty layer area, and the lower surface of the optical adhesive (3) forms a smooth surface;

and a release film (4) which is arranged on the lower surface of the optical adhesive (3).

2. A cover plate with optical glue according to claim 1, characterized in that the optical glue (3) extends and covers the ink layer (2) with a width of 0.6mm to 0.8mm.

3. Cover plate with optical glue according to claim 1, characterized in that the thickness of the ink layer (2) is 8 μm to 15 μm.

4. Cover plate with optical glue according to claim 1, characterized in that the thickness of the optical glue (3) is 50 μm to 100 μm.

5. The cover plate with optical cement according to claim 1, wherein the release film (4) is provided with a concave through hole (41), and the remainder of the concave through hole (41) forms a film tearing handle (42).

6. Cover plate with optical glue according to claim 5, characterized in that the waste material (43) of the "concave" shaped through holes (41) remains on the release film (4).

7. Cover plate with optical glue according to claim 6, characterized in that the waste material (43) of the "concave" shaped through hole (41) is provided with an adhesive area (44).

8. Cover plate with optical glue according to claim 1, characterized in that the upper surface of the cover plate body (1) is formed with a plurality of grooves (11) by etching, the upper side of the cover plate body (1) is covered with a plastic layer (5), and the plastic layer (5) is embedded into a plurality of the grooves (11).

9. Cover plate with optical glue according to claim 8, characterized in that the groove (11) is a closing groove with a narrow outside and a wide inside.

10. Cover plate with optical glue according to claim 9, characterized in that the inner surface of the groove (11) is provided with a surface treatment layer that promotes surface roughness.