Anti-falling silicone adhesive-free liquid crystal display module

Abstract

The utility model discloses an anti-falling silicone-adhesive-free liquid crystal display module which comprises a lower polaroid, a lower substrate, an upper substrate, an upper polaroid, OCA optical cement and a cover plate which are sequentially arranged from bottom to top, and the lower substrate is longer than the upper substrate and extends outwards to form a single-layer area. Buffer glue is arranged on the upper surface of the portion, located in the single-layer area, of the lower substrate, the buffer glue abuts against the cover plate, and the buffer glue is UV elastic glue. And the UV elastic glue is high in compactness, has waterproof capability and can protect the ITO circuit. The UV elastic glue is good in elasticity and low in stress, and no obvious rebound stress exists after the UV elastic glue is attached to the cover plate and pressed. Due to the adoption of the UV curing mode, molecules of the UV elastic glue are fully cured and are not separated out any more, and therefore the problem that the whole machine installation fails due to the fact that silicone oil is separated out to affect the dyne value of cover plate printing ink is solved. The UV elastic glue can be dispensed at one time, the scheme of dispensing UV glue and silicone glue twice at present is replaced, the efficiency is greatly improved, and the cost is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid crystal display, and more specifically to a drop-resistant liquid crystal display module without silicone adhesive. Background Art

[0002] In order to protect the single-layer glass area of ​​mobile phone display modules, UV anti-moisture glue is usually applied to this area to protect the ITO wiring. At the same time, since the thickness of UV anti-moisture glue is generally only 0.13mm, it is impossible to fill the distance from the single-layer area to the cover plate. The distance from the single-layer area to the cover plate is generally 0.33mm, so silicone glue is needed to fill it. After the silicone glue is applied to the cover plate, silicone oil will gradually precipitate on the ink, causing the dyne value of the ink to decrease, affecting the glue application and installation of the entire mobile phone. The above process involves two steps of applying UV glue and silicone glue, which increases the process cost, and there is also the problem of silicone glue and silicone oil diffusion. Utility Model Content

[0003] The technical problem to be solved by the utility model is how to reduce the dispensing process and avoid the diffusion of silicone oil of silicone glue while ensuring the anti-drop property.

[0004] The technical problem to be solved by the utility model is achieved through the following technical solutions:

[0005] In order to solve the above technical problems, the utility model provides a drop-resistant liquid crystal display module without silicone glue, which includes a lower polarizer, a lower substrate, an upper substrate, an upper polarizer, OCA optical glue and a cover plate arranged in sequence from bottom to top, the lower substrate is longer than the upper substrate and extends outward to form a single-layer area, and a buffer glue is arranged on the upper surface of the lower substrate located in the single-layer area, the buffer glue is in contact with the cover plate, and the buffer glue is UV elastic glue.

[0006] As a preferred implementation of the drop-resistant silicone-free liquid crystal display module provided by the utility model, the thickness of the UV elastic glue is greater than or equal to 0.33 mm.

[0007] As a preferred implementation of the drop-resistant silicone-free liquid crystal display module provided by the utility model, the color of the UV elastic glue is black.

[0008] As a preferred implementation of the drop-resistant silicone-free liquid crystal display module provided by the utility model, a plurality of buffer grooves are provided on the upper surface of the UV elastic glue.

[0009] As a preferred implementation of the drop-resistant silicone-free liquid crystal display module provided by the utility model, the shape of the groove is a long strip.

[0010] As a preferred embodiment of the drop-resistant silicone-free liquid crystal display module provided by the utility model, a protrusion is provided on the edge of the upper surface of the lower substrate extending outward, and the UV elastic glue is provided between the protrusion and the upper substrate.

[0011] As a preferred implementation of the drop-resistant silicone-free liquid crystal display module provided by the utility model, the upper surface of the protrusion is flush with the upper surface of the upper substrate.

[0012] As a preferred implementation of the drop-resistant silicone-free liquid crystal display module provided by the utility model, a rounded corner is arranged between the protrusion and the lower substrate.

[0013] As a preferred implementation of the drop-resistant silicone-free liquid crystal display module provided by the utility model, the upper surface of the lower substrate and the side surfaces of the protrusion are rough surfaces.

[0014] As a preferred implementation of the drop-resistant silicone-free liquid crystal display module provided by the utility model, the UV elastic glue extends to the protrusion.

[0015] The utility model has the following beneficial effects:

[0016] UV elastic glue is directly applied to the single-layer area of ​​the display glass and the IC area. In the single-layer area of ​​the display glass, the glue dispensing thickness can be controlled to be in contact with the ink surface of the cover plate in front and back. In the area surrounding the IC, the glue dispensing thickness can be controlled to be thinner to avoid covering the IC surface and affecting heat dissipation. After the UV elastic glue is applied to the display glass, it has strong adhesion to the contact interface. After the UV elastic glue is irradiated by the UV lamp, its surface viscosity decreases, and the contact viscosity with the cover plate ink is low, which is conducive to screen disassembly and repair; and it has strong density and waterproof ability to protect the ITO circuit. UV elastic glue has good elasticity and low stress. After being pressed against the cover plate, there will be no obvious rebound stress. Due to the use of UV curing, the molecules of UV elastic glue are fully cured and no longer precipitate, so there is no problem of silicone oil precipitation affecting the dyne value of the cover plate ink and causing the whole machine to fail. UV elastic glue can be dispensed once, replacing the current solution of dispensing UV glue and silicone glue twice, which greatly improves efficiency and saves costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the scheme in the present application, a brief introduction is given below to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1The utility model provides a structure diagram of a drop-resistant liquid crystal display module without silicone adhesive.

[0019] Figure 2 for Figure 1 Schematic diagram of the improved structure.

[0020] Figure 3 This is a schematic diagram of the structure of Example 2.

[0021] Figure 4 for Figure 3 Schematic diagram of the improved structure.

[0022] Description of Figure Numbers:

[0023] Lower polarizer 1; lower substrate 2; upper substrate 3; upper polarizer 4; cover plate 5; UV elastic glue 6; buffer groove 61; protrusion 21. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0025] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0026] In addition, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second", and "third" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0027] The utility model provides a drop-resistant liquid crystal display module without silicone glue, which includes a lower polarizer, a lower substrate, an upper substrate, an upper polarizer, OCA optical glue and a cover plate which are arranged in sequence from bottom to top. The lower substrate is longer than the upper substrate and extends outward to form a single-layer area. The upper surface of the lower substrate located in the single-layer area is provided with buffer glue, which abuts against the cover plate, and the buffer glue is UV elastic glue.

[0028] UV elastic glue is directly applied to the single-layer area of ​​the display glass and the IC area. In the single-layer area of ​​the display glass, the glue dispensing thickness can be controlled to be in contact with the ink surface of the cover plate in front and back. In the area surrounding the IC, the glue dispensing thickness can be controlled to be thinner to avoid covering the IC surface and affecting heat dissipation. After the UV elastic glue is applied to the display glass, it has strong adhesion to the contact interface. After the UV elastic glue is irradiated by the UV lamp, its surface viscosity decreases, and the contact viscosity with the cover plate ink is low, which is conducive to screen disassembly and repair; and it has strong density and waterproof ability to protect the ITO circuit. UV elastic glue has good elasticity and low stress. After being pressed against the cover plate, there will be no obvious rebound stress. Due to the use of UV curing, the molecules of UV elastic glue are fully cured and no longer precipitate, so there is no problem of silicone oil precipitation affecting the dyne value of the cover plate ink and causing the whole machine to fail. UV elastic glue can be dispensed once, replacing the current solution of dispensing UV glue and silicone glue twice, which greatly improves efficiency and saves costs.

[0029] In order to enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings. The present invention is described in detail below in conjunction with the accompanying drawings and embodiments, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limitations on the present invention.

[0030] Example 1

[0031] See also Figure 1, a drop-resistant silicone-free liquid crystal display module provided by the utility model, comprising a lower polarizer 1, a lower substrate 2, an upper substrate 3, an upper polarizer 4, an OCA optical glue and a cover plate 5 arranged in sequence from bottom to top, wherein the lower substrate 2 is longer than the upper substrate 3 and extends outward to form a single-layer area, and a buffer glue is arranged on the upper surface of the lower substrate 2 located in the single-layer area, and the buffer glue is in contact with the cover plate 5, and the buffer glue is UV elastic glue 6. The UV elastic glue 6 directly fills the single-layer area and IC area of ​​the display glass. In the single-layer area of ​​the display glass, the glue dispensing thickness can be controlled to be in contact with the ink surface of the cover plate 5 before and after. In the peripheral area of ​​the IC, the glue dispensing thickness can be controlled to be thinner to avoid covering the IC surface and affecting heat dissipation. After the UV elastic glue 6 is dotted on the display glass, it has a strong viscosity with the contact interface. After the UV elastic glue 6 is irradiated by the UV lamp, its surface viscosity decreases, and the contact viscosity with the ink on the cover plate 5 is low, which is conducive to screen disassembly and repair; and it has strong density and waterproof ability to protect the ITO circuit. The UV elastic glue 6 has good elasticity and low stress. After being pressed against the cover plate 5, there will be no obvious rebound stress. Due to the use of UV curing, the molecules of the UV elastic glue 6 are fully cured and no longer precipitate, so there is no problem of silicone oil precipitation affecting the dyne value of the ink on the cover plate 5 and causing the whole machine to fail. The UV elastic glue 6 can be dispensed once, replacing the current solution of dispensing UV glue and silicone glue twice, which greatly improves efficiency and saves costs.

[0032] When using, first apply UV elastic glue 6 to the single-layer area of ​​the display glass and the area around the IC, and apply different thicknesses according to design requirements. Then perform UV irradiation. Then attach the cover plate 5 to the display main screen, and the UV elastic glue 6 fills the single-layer area. Of course, you can also apply UV elastic glue 6, and then irradiate the UV elastic glue 6 with UV after all are attached.

[0033] Furthermore, the thickness of the UV elastic glue 6 is greater than or equal to 0.33 mm, so that it is not necessary to apply UV moisture-proof glue, and the UV elastic glue 6 can be directly applied to abut against the cover plate 5.

[0034] Furthermore, the color of the UV elastic glue 6 is black, and the distribution area of ​​the UV elastic glue 6 is also located in the non-display area, which can improve the integrated black effect.

[0035] See also Figure 2 Furthermore, a plurality of buffer grooves 61 are provided on the upper surface of the UV elastic glue 6 so that when the UV elastic glue 6 is excessively coated, it can be squeezed toward the buffer grooves 61 without lifting the cover plate 5 .

[0036] Furthermore, the groove is in the shape of an elongated strip.

[0037] Example 2

[0038] See also Figure 3 As a further optimization scheme of Example 1, in this embodiment, the edge of the upper surface of the lower substrate 2 extending outward is provided with a protrusion 21, and the UV elastic glue 6 is provided between the protrusion 21 and the upper substrate 3. Since the edge of the lower substrate 2 is provided with the protrusion 21, the protrusion 21 can limit the flow of the UV elastic glue 6, so that the shape of the UV elastic glue 6 is easy to control, and there will be no overflow of glue or incomplete glue dispensing. This prevents the liquid crystal display module from being unable to be assembled with the casing. In addition, the problem of poor buffering effect caused by incomplete glue dispensing and easy rupture of the lower substrate 2 is avoided, and the abnormal display of the liquid crystal display module is prevented.

[0039] Furthermore, the upper surface of the protrusion 21 is flush with the upper surface of the upper substrate 3 to further limit the flow of the UV elastic glue 6, so that the shape of the UV elastic glue 6 is easy to control without overflowing glue or incomplete glue dispensing.

[0040] Furthermore, a chamfer is provided between the protrusion 21 and the lower substrate 2 so that the UV elastic glue 6 can more easily fill the space between the protrusion 21 on the upper surface of the lower substrate 2 and the upper substrate 3. The protrusion 21 with a chamfer can allow the UV elastic glue 6 to flow more smoothly into the space between the protrusion 21 on the upper surface of the lower substrate 2 and the upper substrate 3, making it less likely for bubbles to appear.

[0041] Furthermore, the upper surface of the lower substrate 2 and the side surfaces of the protrusions 21 are rough surfaces to improve the fixing effect of the UV elastic glue 6 .

[0042] Furthermore, the rough surface is a frosted surface or a diamond knurling surface to further improve the fixing effect of the UV elastic glue 6.

[0043] See also Figure 4 Furthermore, the UV elastic glue 6 extends onto the protrusion 21 to further increase the contact area between the UV elastic glue and the cover plate 5 .

[0044] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] Obviously, the embodiments described above are only some embodiments of the present application, rather than all embodiments. The preferred embodiments of the present application are given in the accompanying drawings, but they do not limit the patent scope of the present application. The present application can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive. Although the present application is described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific implementation methods, or to perform equivalent replacement of some of the technical features therein. Any equivalent structure made using the contents of the specification and drawings of this application, directly or indirectly used in other related technical fields, is similarly within the scope of patent protection of this application.

Claims

1. A drop-resistant liquid crystal display module without silicone adhesive, characterized in that: It includes a lower polarizer, a lower substrate, an upper substrate, an upper polarizer, an OCA optical glue and a cover plate which are arranged in sequence from bottom to top. The lower substrate is longer than the upper substrate and extends outward to form a single-layer area. The upper surface of the lower substrate located in the single-layer area is provided with a buffer glue, which is in contact with the cover plate and is UV elastic glue.

2. The drop-resistant silicone-free liquid crystal display module according to claim 1, characterized in that: The thickness of the UV elastic glue is greater than or equal to 0.33 mm.

3. The drop-resistant silicone-free liquid crystal display module according to claim 1, characterized in that: The color of the UV elastic glue is black.

4. The drop-resistant silicone-free liquid crystal display module according to claim 1, characterized in that: The upper surface of the UV elastic glue is provided with a plurality of buffer grooves.

5. The drop-resistant silicone-free liquid crystal display module according to claim 4, characterized in that: The groove is in the shape of an elongated strip.

6. The drop-resistant silicone-free liquid crystal display module according to claim 1, characterized in that: A protrusion is arranged on the edge of the upper surface of the lower substrate extending outward, and the UV elastic glue is arranged between the protrusion and the upper substrate.

7. The drop-resistant silicone-free liquid crystal display module according to claim 6, characterized in that: An upper surface of the protrusion is flush with an upper surface of the upper substrate.

8. The drop-resistant silicone-free liquid crystal display module according to claim 6, characterized in that: A rounded corner is arranged between the protrusion and the lower substrate.

9. The drop-resistant silicone-free liquid crystal display module according to claim 6, characterized in that: The upper surface of the lower substrate and the side surfaces of the protrusion are rough surfaces.

10. The drop-resistant silicone-free liquid crystal display module according to claim 6, characterized in that: The UV elastic glue extends onto the protrusion.

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