CN218996327U

CN218996327U - Display module assembly of effect is bound to convenient detection FOG

Info

Publication number: CN218996327U
Application number: CN202222850660.1U
Authority: CN
Inventors: 郭晓琴; 骆志锋; 罗俊; 尹智杰
Original assignee: Shenzhen Tongxingda Technology Co Ltd
Current assignee: Shenzhen Tongxingda Technology Co Ltd
Priority date: 2022-10-27
Filing date: 2022-10-27
Publication date: 2023-05-09
Anticipated expiration: 2032-10-27

Abstract

The utility model discloses a display module for conveniently detecting FOG binding effect, which comprises: the liquid crystal display comprises liquid crystal glass and an FPC bound on the liquid crystal glass through an ACF, wherein the FPC comprises a connecting part, the connecting part comprises a plurality of virtual PIN, two virtual PIN in the virtual PIN are respectively a first test PIN and a second test PIN, the FPC further comprises a first test point and a second test point, the first test PIN and the second test PIN are respectively connected with the first test point and the second test point through internal wiring of the FPC, a covering layer is arranged on the first test point and the second test point, a region corresponding to the first test PIN on the liquid crystal glass is a first region, a region corresponding to the second test PIN on the liquid crystal glass is a second region, and a circuit for connecting the first region and the second region is formed on the liquid crystal glass. The utility model has the beneficial effects that: the dummy PIN of the FPC in the display module is utilized as a test PIN, and the resistance between two test points can be measured through a universal meter after binding, so that whether the test is qualified or not is judged, and the binding effect is conveniently monitored and detected.

Description

Display module assembly of effect is bound to convenient detection FOG

Technical Field

The utility model relates to the technical field of display modules, in particular to a display module capable of conveniently detecting FOG binding effect.

Background

In the liquid crystal display module, the liquid crystal glass is included. Driving IC, FPC and parts such as backlight unit, FOG bind FPC on liquid crystal glass, when binding, need set up between FPC and liquid crystal glass through ACF (anisotropic conductive film), realize binding through the mode of hot pressing, in this process, need make the gold pellet of the corresponding position in the ACF explode well, just can realize good conduction performance, if gold pellet does not explode or explode the transition, can both influence the conduction performance between FPC and the glass. In actual production, the conducting effect of the ACF between the FPC and the glass is inconvenient to test, and is usually inspected by a microscope, which is troublesome. In the FPC, through more than 100 PIN and glass conductive connection, please refer to FIG. 1, wherein some PIN of binding position is not born and shows the relevant function, industry terminology is called dummy PIN (virtual PIN), this patent aims at utilizing these dummy PIN (virtual PIN), realizes convenient visual detection ACF conductive effect and FOG binding's effect.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art and provides a display module for conveniently detecting the binding effect of FOG.

The technical scheme of the utility model is as follows: the utility model provides a display module for conveniently detecting FOG binding effect, which comprises the following steps: the liquid crystal display comprises liquid crystal glass and an FPC bound on the liquid crystal glass through an ACF, wherein the FPC comprises a connecting part, a plurality of virtual PIN (dummy PIN) are included on the connecting part, two virtual PIN are respectively a first test PIN and a second test PIN, the FPC further comprises a first test point and a second test point, the first test PIN and the second test PIN are respectively connected with the first test point and the second test point through internal wiring of the FPC, a covering layer is arranged on the first test point and the second test point, a region corresponding to the first test PIN on the liquid crystal glass is a first region, a region corresponding to the second test PIN on the liquid crystal glass is a second region, and a circuit for connecting the first region and the second region is formed on the liquid crystal glass.

Further, the first test PIN and the second test PIN are disposed adjacent to each other.

Further, the first test point and the second test point are not located at a bending region of the FPC.

Further, the shapes of the first test point and the second test point are spherical.

Further, the diameters of the first test point and the second test point are 0.5mm-1mm.

Further, the material of the cover layer is PI (polyimide).

Alternatively, the material of the cover layer may be ink.

By adopting the scheme, the utility model has the beneficial effects that: the dummy PIN (virtual PIN) of the FPC in the display module is utilized as a test PIN, and the resistance between two test points can be measured through a universal meter after binding, so that whether the test is qualified or not is judged, and the binding effect is conveniently monitored and detected.

Drawings

Fig. 1 is a schematic structural diagram of two dummy PINs in a copper layer of a conventional FPC.

Fig. 2 is a schematic structural diagram of a display module according to an embodiment of the utility model.

Fig. 3 is a schematic structural diagram of a first test PIN and a second test PIN in a copper layer of an FPC according to an embodiment of the present utility model.

Detailed Description

The utility model will be described in detail below with reference to the drawings and the specific embodiments.

Referring to fig. 2 and 3 in combination, the present utility model provides a display module for conveniently detecting a binding effect of a FOG, including: the liquid crystal display comprises liquid crystal glass 2 and FPC1 bound on the liquid crystal glass 2 through ACF, the FPC1 comprises a connecting part, a plurality of virtual PIN are included on the connecting part, two virtual PIN in the virtual PIN are respectively a first test PIN 11 and a second test PIN 12, the FPC1 further comprises a first test point 13 and a second test PIN 14, the first test PIN 11 and the second test PIN 12 are respectively connected with the first test point 13 and the second test point 14 through internal wiring of the FPC1, the first test point 13 and the second test point 14 are provided with covering layers, the test points can be well protected, the covering layers of the corresponding test points only need to be scraped for testing under the condition that the test is needed, the area of the liquid crystal glass 2 corresponding to the first test PIN 11 is a first area, the area of the liquid crystal glass 2 corresponding to the second test PIN 12 is a second area, and lines for connecting the first area and the second area are formed on the liquid crystal glass 2.

Further, the first test PIN 11 and the second test PIN 12 are adjacently arranged, so that the first test point 13 and the second test point 14 are relatively close, and the first area and the second area are also conveniently connected through a circuit on the liquid crystal glass 2, so that the test can be conveniently performed, and the circuit of the liquid crystal glass 2 and the FPC1 can also be conveniently designed.

Further, in this embodiment, the first test point 13 and the second test point 14 are not located at the bending region of the FPC1, so that the bending region of the FPC1 can be avoided, and the test is not affected.

Further, in this embodiment, the shapes of the first test point 13 and the second test point 14 are spherical.

Further, in this embodiment, the diameters of the first test point 13 and the second test point 14 are both 0.5mm-1mm. By arranging the first test point 13 and the second test point 14, the problem that the FPC1 is small in line size (usually only 0.04mm in width) and inconvenient to measure by a universal meter can be effectively avoided

Further, in this embodiment, the material of the cover layer is PI (polyimide).

Further, in various embodiments, the material of the covering layer may be ink, for example, an ink covering layer disposed by a screen printing process or the like.

Referring to fig. 2 and fig. 3 in combination, in this embodiment, the first test PIN 11, the second test PIN 12, the corresponding lines and the first test point 13 and the second test point 14 are all in the copper layer of the FPC1, fig. 3 is a partial enlarged view of the front line of the FPC1 in this embodiment, where the stripe filling portion has a copper layer, after the binding is completed, the covering layers on the first test point 13 and the second test point 14 may be scraped, so that the first test point 13 and the second test point 14 are exposed, and two test pens with a multimeter are respectively dotted at the first test point 13 and the second test point 14, and when the binding is good, since the lines on the first test point 13, the FPC1, the first test PIN 11, the ACF, the first area, the line of the liquid crystal glass 2, the second area, the ACF, the second test PIN 12, the line on the FPC1, and the second test point 14 are sequentially connected to form a loop, and it may be determined whether the binding is good (if the resistance value of the set ohmic value is smaller than or equal to 4 when the binding is required to be normal) according to the measured resistance value obtained by the multimeter.

It should be noted that, in the case that the above embodiment is one test loop, under different embodiments of the present solution, a plurality of test loops (each test loop includes two corresponding test points on the FPC1, two test PINs, and two corresponding connected areas of the display glass) may be provided, and by setting the test loops in different areas, the binding effect at different areas may be monitored, so as to obtain more accurate and more targeted binding effect detection, where the principle is the same as that of the previous embodiment and is not repeated herein.

In summary, the beneficial effects of the utility model are as follows: the dummy PIN (virtual PIN) of the FPC in the display module is utilized as a test PIN, and the resistance between two test points can be measured through a universal meter after binding, so that whether the test is qualified or not is judged, and the binding effect is conveniently monitored and detected.

The foregoing description of the preferred embodiment of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims

1. Display module assembly of effect is bound to convenient detection FOG, a serial communication port, include: the liquid crystal display comprises liquid crystal glass and an FPC bound on the liquid crystal glass through an ACF, wherein the FPC comprises a connecting part, a plurality of virtual PIN are arranged on the connecting part, two virtual PIN are respectively a first test PIN and a second test PIN, the FPC further comprises a first test point and a second test point, the first test PIN and the second test PIN are respectively connected with the first test point and the second test point through internal wiring of the FPC, a covering layer is arranged on the first test point and the second test point, a region corresponding to the first test PIN on the liquid crystal glass is a first region, a region corresponding to the second test PIN on the liquid crystal glass is a second region, and a circuit for connecting the first region and the second region is formed on the liquid crystal glass.

2. The display module for facilitating detection of FOG binding effects of claim 1, wherein the first test PIN and the second test PIN are disposed adjacent to each other.

3. The display module for facilitating detection of FOG binding effects of claim 1, wherein the first test point and the second test point are not located at a bending region of the FPC.

4. A display module for facilitating detection of FOG binding according to any one of claims 1 to 3, wherein the first test point and the second test point are each spherical in shape.

5. The display module for facilitating detection of FOG binding effects according to claim 4, wherein the diameters of the first test point and the second test point are both 0.5mm-1mm.

6. A display module for facilitating detection of FOG binding according to any one of claims 1 to 3, wherein the material of the cover layer is PI.

7. A display module for facilitating detection of FOG binding according to any one of claims 1 to 3, wherein the material of the cover layer is ink.