Display module for preventing connector circuit from being broken after green oil process

Abstract

The utility model discloses a display module for preventing a connector circuit from being broken after a green oil process, which comprises a module FPC (flexible printed circuit), a connector part is formed on the module FPC, a front windowing area is formed on the front surface of the connector part of the module FPC, a connector is arranged on the front windowing area, and an exposure green oil layer for protecting a bonding pad of the connector is further arranged on the front surface of the connector part. The module FPC is provided with a reinforcing steel sheet on the back of the connector part, and the distance between the edge, close to the main body of the module FPC, of the reinforcing steel sheet and the corresponding edge of the front windowing area on the orthographic projection is larger than or equal to 0.6 mm. The beneficial effects of the utility model lie in that by extending the coverage range of the reinforcing steel sheet, it is ensured that the reinforcing steel sheet arranged on the reverse side can correspondingly and completely cover the windowing area on the front side, the problem that the circuit at the exposure green oil layer is broken when the subsequent bending area is bent is avoided, and the product quality is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to display module technical field especially relates to a kind of display module for preventing connector circuit break after green oil technology. BACKGROUND

[0002] Currently, connector is arranged on module FPC of display module, and some products need to be bent near the position of the connector. Since the gap between many connector pins is too small, higher-precision exposure green oil windowing technology is needed at the connector pad. The cover film is windowed at the connector pad, and an exposure green oil layer is arranged at the windowed position. Since the exposure green oil is brittle and has poor bending performance, it can cause the connector circuit near the bending position to break during subsequent assembly and bending of the display module.

[0003] Therefore, the prior art has defects and needs to be improved. INVENTION CONTENTS

[0004] The utility model aims at overcoming the defects of the prior art and providing a display module for preventing connector circuit break after green oil technology.

[0005] The technical scheme of the utility model is as follows: the utility model provides a display module for preventing connector circuit break after green oil technology, comprising: a module FPC, a joint portion is formed on the module FPC, a front surface windowing area is formed on the front surface of the joint portion of the module FPC, a connector is arranged on the front surface windowing area, an exposure green oil layer for protecting the pad of the connector is further arranged on the front surface of the joint portion, a reinforcing steel sheet is arranged on the back surface of the joint portion of the module FPC, the distance between the edge of the reinforcing steel sheet close to the main body of the module FPC and the corresponding edge of the front surface windowing area in orthographic projection is greater than or equal to 0.6 mm, and the edge of the reinforcing steel sheet close to the main body of the module FPC is closer to the main body of the module FPC than the corresponding edge of the front surface windowing area.

[0006] Further, the exposure green oil layer is arranged on the front surface cover film in the front surface windowing area and the edge of the front surface windowing area.

[0007] Further, the scheme further comprises a liquid crystal module, and the liquid crystal module is bound and connected with the module FPC.

[0008] Further, the scheme further comprises a backlight module, and the backlight module is laminated on the lower layer of the liquid crystal module.

[0009] Further, the scheme further comprises a cover plate, and the cover plate is attached to the upper layer of the liquid crystal module through OCA glue.

[0010] The beneficial effects of the utility model lie in: through extending the coverage range of the reinforcing steel sheet, it is ensured that the reinforcing steel sheet arranged on the reverse surface can correspondingly completely cover the front windowing area, the problem of line breakage at the exposed green oil layer caused by the bending of the subsequent bending area is avoided, and the quality of the product is improved. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 It is a structure schematic view of the front surface of the joint part of the module FPC of an embodiment of the utility model.

[0012] Figure 2 It is a sectional view schematic view of the joint part of the module FPC of an embodiment of the utility model. DETAILED DESCRIPTION

[0013] The utility model will be explained in detail in combination with the drawings and specific embodiments.

[0014] Please combine with Figure 1 and Figure 2 In the embodiment, the utility model provides a kind of display module for preventing green oil process connector line breakage, comprising: module FPC 1, connector 2 is formed on the module FPC 1, the front windowing area 3 is formed on the front surface of the joint part of the module FPC 1, the front surface of the joint part is also provided with the exposed green oil layer 4 for protecting the pad of the connector 2, reinforcing steel sheet 5 is arranged on the back surface of the joint part of the module FPC 1, the edge of the reinforcing steel sheet 5 close to the main body of the module FPC 1 Distance L on the corresponding edge (the edge of the front windowing area close to the main body of the module FPC) of the front windowing area 3 in orthographic projection is greater than or equal to 0.6mm, and the edge of the reinforcing steel sheet 6 close to the main body of the module FPC 1 is closer to the main body of the module FPC 1 than the corresponding edge of the front windowing area 3, such setting makes the edge of the reinforcing steel sheet 6 relative to the corresponding edge of the front windowing area 3 closer to the bending area, so that the reinforcing steel sheet 6 can protect the line of the front windowing area 3 when bending.

[0015] Specifically, please refer to Figure 1 , Figure 1 It is a structure schematic view of the front surface of the joint part of the module FPC in the embodiment, wherein boundary 31 is the boundary line of the front windowing area 3, the area enclosed by boundary 31 is the front windowing area 3, boundary 41 and boundary 42 are the boundary lines of the exposed green oil layer 13, and the area 4 between boundary 41 and boundary 42 is the setting area of the exposed green oil layer 13, Figure 2 It is a sectional view schematic view of the joint part of the module FPC (not drawn connector).

[0016] In the module FPC 1, since the bonding tolerance of the reinforcing steel sheet 6 is 0.1-0.2 mm and the bonding tolerance of the cover film is 0.1-0.2 mm, when the exposure green oil windowing process is performed, the front cover film 7 at the position of the connector 2 pad needs to be removed by 0.3 mm (i.e. the edge of the front windowing area is 0.3 mm away from the pad of the connector), in order to meet the requirement of preventing line breakage, the overlap distance between the edge of the front windowing area 3 and the corresponding reinforcing steel sheet 6 on the back side should be greater than or equal to 0.2 mm, and the corresponding distance of the present scheme is greater than or equal to 0.6 mm, so that the reinforcing steel sheet on the back side can play the corresponding anti-bending and breakage effect even in the case of stacking processing error.

[0017] Further, the front cover film 7 in the front windowing area 3 and on the edge of the front windowing area 3 is provided with an exposure green oil layer 4, which can realize comprehensive protection of the line in the front windowing area 3 and can also ensure the integrity of the exposure green oil layer 4 and improve the tear resistance of the exposure green oil layer 4.

[0018] Further, the scheme further includes a liquid crystal module, a backlight module and a cover plate, the liquid crystal module is bound and connected with the module FPC 1, the backlight module is laminated and arranged under the liquid crystal module, and the cover plate is attached to the upper layer of the liquid crystal module through OCA glue.

[0019] In summary, the beneficial effects of the present scheme are that the coverage range of the reinforcing steel sheet is extended, so that the reinforcing steel sheet arranged on the back side can correspondingly completely cover the front windowing area, avoid the problem of line breakage at the exposure green oil layer when the bending area is bent subsequently, and improve the quality of the product.

[0020] The above is only a preferred embodiment of the present application and is not used to limit the present application, and any modification, equivalent replacement and improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A display module for preventing connector line breakage after a green oil process, the display module comprising: The display module comprises: A module FPC, a joint part is formed on the module FPC, a front opening window area is formed on the front of the joint part, a connector is arranged on the front opening window area, an exposure green oil layer is arranged on the front of the joint part for protecting the pads of the connector, a reinforcing steel sheet is arranged on the back of the joint part, the distance between the edge of the reinforcing steel sheet close to the main body of the module FPC and the corresponding edge of the front opening window area in the orthographic projection is greater than or equal to 0.6mm, and the edge of the reinforcing steel sheet close to the main body of the module FPC is closer to the main body of the module FPC than the corresponding edge of the front opening window area. 2.The display module for preventing the connector circuit from being broken after the green oil process according to claim 1, wherein, The exposure green oil layer is arranged on the front of the front opening window area and the front of the edge of the front opening window area.

3. The display module for preventing the connector line from breaking after the green oil process according to claim 1 or 2, characterized in that, The display module further comprises a liquid crystal module, the liquid crystal module is connected with the module FPC.

4. The display module for preventing the connector line from breaking after the green oil process according to claim 3, wherein, The display module further comprises a backlight module, the backlight module is arranged in the lower layer of the liquid crystal module.

5. The display module for preventing the connector line from being broken after the green oil process according to claim 3, further comprising a cover plate, the cover plate is attached to the upper layer of the liquid crystal module through OCA glue.

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