Mobile phone screen module with indented OCA

Abstract

A mobile phone screen module with an OCA (Optical Clear Adhesive) shrunk inwards comprises a TFT (Thin Film Transistor) liquid crystal main screen and an OCA adhesive layer attached to cover plate glass, and a point silver paste part of the OCA adhesive layer close to a GND (Ground) circuit communicated with a polaroid and the TFT liquid crystal main screen is shrunk inwards. According to the utility model, the inward shrinkage design for avoiding the point silver paste part is adopted on the two sides of the bottom of the OCA layer, so that glue and silver paste in the OCA are prevented from permeating and interfering with each other when the OCA is attached to the TFT liquid crystal main screen.

Description

Technical Field

[0001] The utility model relates to a liquid crystal screen module, in particular to a liquid crystal screen module adhered by OCA. Background Art

[0002] After the polarizer is attached to the TFT liquid crystal main screen, silver paste will be dropped between the exposed PAD on the GND line of the cover glass and the polarizer by means of dotting silver paste, so as to connect the GND lines of the polarizer and the TFT liquid crystal main screen, and avoid the residual static electricity on the polarizer during the production, manufacturing and transportation processes. The static electricity is led away through the silver paste and then through the GND line on the TFT liquid crystal main screen. The OCA adhesive layer is used for attaching the TFT liquid crystal main screen to the cover glass. If the glue on the OCA touches the silver paste, the glue and the silver paste are prone to mutual penetration, which affects the conductive effect of the silver paste and the transparent effect of the OCA, and further affects the display effect of the entire liquid crystal screen. Summary of the Utility Model

[0003] The purpose of the utility model is to overcome the deficiencies in the prior art and provide a mobile phone screen module with OCA retraction to avoid the mutual penetration of silver paste and OCA glue and affect the display effect.

[0004] The purpose of the utility model is realized by the following technical solutions:

[0005] A mobile phone screen module with OCA retraction includes a TFT liquid crystal main screen, a cover glass, an IC and an FPC. The TFT liquid crystal main screen is attached with a polarizer. The IC and the FPC are bonded to the cover glass. The cover glass is provided with a silver paste wire groove. The side of the TFT liquid crystal main screen attached with the polarizer and the cover glass are bonded through an OCA adhesive layer. An inward retraction position is arranged at the bottom of the OCA adhesive layer near the silver paste wire groove in the direction close to the TFT liquid crystal main screen.

[0006] Further, the outer frame of the OCA adhesive layer is larger than the outer frame of the TFT liquid crystal main screen and smaller than the outer frame of the polarizer.

[0007] Further, the silver paste wire grooves are arranged on the left and right sides near the side of the cover glass bonded with the IC and the FPC.

[0008] Further, the silver paste wire grooves are arranged at the connection of the polarizer on the cover glass and the GND line of the TFT liquid crystal main screen.

[0009] Further, the cover glass is provided with a starting positioning point for dotting silver paste. Preferably, the starting positioning point is in a cross shape.

[0010] Further, inward retraction positions are arranged on the left and right sides at the bottom of the OCA adhesive layer, and the width thereof is greater than the length of the silver paste dotted from the starting positioning point to the silver paste wire groove.

[0011] Further, an avoidance position is provided at the side of the OCA adhesive layer, and chamfers are provided at the four corners.

[0012] Preferably, the OCA adhesive layer is formed by die-cutting.

[0013] Preferably, the cover glass is made of tempered glass or UTG glass.

[0014] In the OCA-retracted mobile phone screen module of the present utility model, at both sides of the bottom of the OCA adhesive layer, a retracted design that avoids the silver paste part is adopted. When the OCA is attached to the TFT liquid crystal main screen, it can prevent the glue in the OCA from mutually penetrating and interfering with the silver paste. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for the embodiments. It should be understood that the following drawings only show some embodiments of the present utility model, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0016] Figure 1 Schematic diagram of the OCA adhesive layer for the embodiment;

[0017] Figure 2 Schematic diagram of the mobile phone screen module for the embodiment;

[0018] Figure 3 For Figure 2 Enlarged view of part A. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] To facilitate the understanding of the present utility model, the following will describe the present utility model more comprehensively with reference to the relevant drawings. The preferred embodiments of the present utility model are shown in the drawings. However, the present utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the disclosure of the present utility model more thorough and comprehensive.

[0020] It should be noted that when an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be intermediate elements present. The terms "bottom", "left", "right" and similar expressions used herein are only for illustrative purposes and do not represent the only embodiment.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this utility model belongs. The terms used in the description of this utility model herein are for the purpose of describing specific embodiments only and are not intended to limit this utility model. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0022] Referring to Figures 1 to 3 In the mobile phone screen module with OCA retraction in the embodiment of Figures 1 to 3 , it includes a TFT liquid crystal main screen 1, a cover glass 2, an IC 3, and an FPC 4. A polarizer 5 is attached to the TFT liquid crystal main screen 1. The IC 3 and the FPC 4 are bonded to the cover glass 2. A silver paste wire groove 21 is provided on the cover glass 2. The side of the TFT liquid crystal main screen 1 where the polarizer 5 is attached is adhered to the cover glass 2 through an OCA adhesive layer 6. An inward retraction position 61 is provided at the bottom of the OCA adhesive layer 6 near the silver paste wire groove 21 and extends in the direction towards the TFT liquid crystal main screen 1. In this way, when the polarizer 5 is attached to the TFT liquid crystal main screen 1, and silver paste is dropped along the silver paste wire groove 21, when the silver paste drops between the exposed PAD of the GND line on the cover glass 2 and the polarizer, the glue of the OCA adhesive layer 6 will not penetrate with the silver paste, affecting the display effect of the mobile phone screen.

[0023] In this embodiment, the border of the OCA adhesive layer 6 is larger than the border of the TFT liquid crystal main screen 1 and smaller than the border of the polarizer 5.

[0024] In this embodiment, the silver paste wire grooves 21 are provided on the left and right sides near the side of the cover glass 2 where the IC 3 and the FPC 4 are bonded, and the silver paste wire grooves 21 are provided at the connection between the polarizer 5 and the GND line of the TFT liquid crystal main screen 1 on the cover glass 2. The design of the silver paste wire grooves 21 can prevent the overflow of the dropped silver paste, further prevent its penetration with the OCA glue, and also avoid conduction with other lines or short circuits caused by overflow.

[0025] In this embodiment, a silver paste dropping starting positioning point 22 is also provided on the cover glass 2. Preferably, the starting positioning point 22 is in a cross shape, which can not only ensure the accuracy of the position of each silver paste drop, improve the yield and consistency of the product, but also help the device quickly and accurately find the position of silver paste dropping, thereby improving production efficiency.

[0026] Matching the two silver paste wire grooves 21 provided above, there are also two starting positioning points 22, which are respectively provided on one side of the respective corresponding silver paste wire groove 21 near the left or right side of the cover glass 2.

[0027] In this embodiment, the width of the inward retraction positions 61 on the left and right sides at the bottom of the OCA adhesive layer 6 is greater than the length of the silver paste dropping from the starting positioning point to the silver paste wire groove.

[0028] In this embodiment, the OCA adhesive layer 6 is formed by die-cutting, with an avoidance position provided on the upper side and chamfers provided at the four corners for matching the design of the TFT liquid crystal main screen.

[0029] In this embodiment, the cover glass 2 is made of tempered glass or UTG glass.

[0030] The above-described embodiments merely represent several implementation manners of the present utility model. The description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several deformations and improvements can still be made, and these all belong to the protection scope of the present utility model. Therefore, the protection scope of the present utility model patent shall be subject to the appended claims.

Claims

1. A mobile phone screen module with OCA inward contraction, comprising a TFT liquid crystal main screen, a cover glass, an IC and an FPC. The TFT liquid crystal main screen is attached with a polarizer, and the IC and the FPC are bonded on the cover glass, characterized in that, The cover glass is provided with silver paste wire grooves. The side of the TFT liquid crystal main screen attached with a polarizer is adhered to the cover glass through an OCA adhesive layer. An inward contraction position is provided at the bottom of the OCA adhesive layer near the silver paste wire grooves and extends in the direction close to the TFT liquid crystal main screen.

2. The OCA-shrunk mobile phone screen module according to claim 1, wherein The border of the OCA adhesive layer is larger than the border of the TFT liquid crystal main screen and smaller than the border of the polarizer.

3. The OCA-shrunk mobile phone screen module according to claim 2, wherein The silver paste wire grooves are provided on the left and right sides near the side of the cover glass for binding IC and FPC.

4. The OCA-shrunk mobile phone screen module according to claim 3, characterized in that, The silver paste wire grooves are provided at the connection between the polarizer and the GND circuit of the TFT liquid crystal main screen on the cover glass.

5. The OCA-shrunk mobile phone screen module according to claim 4, wherein The cover glass is provided with silver paste starting positioning points.

6. The OCA-shrunk mobile phone screen module according to claim 5, characterized in that, The starting positioning points are cross-shaped.

7. The OCA-shrunk mobile phone screen module according to claim 6, characterized in that, Inward contraction positions are provided on the left and right sides at the bottom of the OCA adhesive layer, and their width is greater than the length of the silver paste from the starting positioning point to the silver paste wire grooves.

8. The OCA-shrunk mobile phone screen module according to claim 7, wherein Avoidance positions are provided on the side of the OCA adhesive layer, and chamfers are provided at the four corners.

9. The OCA-shrunk mobile phone screen module according to claim 1, wherein, The OCA adhesive layer is formed by die cutting.

10. The OCA-shrunk mobile phone screen module according to claim 1, characterized in that The cover glass is made of tempered glass or UTG glass.

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