Structure for reducing rebound force of touch FPC (Flexible Printed Circuit) of intelligent display module

Abstract

A structure of an intelligent display module for reducing rebound force of a touch FPC comprises a display screen, a display FPC and the touch FPC. The center of the top of the display screen and the touch FPC are arranged together, the center of the bottom of the display screen is provided with a COF driving chip, and the COF driving chip and the display FPC are arranged together; the top of the joint of the touch control FPC and the display FPC is provided with a bending hollowed-out area. According to the structure for reducing the rebound force of the touch control FPC of the intelligent display module, the bending hollowed-out area is arranged at the top position of the joint of the display screen and the touch control FPC, the wires in the bending area are concentrated on the left side and the right side of the touch control FPC, the wires are made to avoid the bending area, and therefore the whole film layer can be hollowed out, and the rebound force of the touch control FPC can be reduced. The rebound stress of the FPC after bending is effectively reduced, and the product reliability is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of intelligent display modules, and in particular to a structure of an intelligent display module for reducing the rebound force of a touch FPC. Background Art

[0002] With the improvement of living standards, smart wearable devices such as bracelets / watches are becoming more and more common, product competition is becoming more and more fierce, and consumers are becoming more and more demanding on product reliability. In order to ensure that the module does not have defects such as FPC warping in environmental tests such as high temperature and high humidity or structural tests such as vibration, a structure is designed to reduce the rebound force of the touch FPC of the smart display module, which can reduce the occurrence of adverse conditions such as FPC warping in environmental reliability test experiments such as high temperature and high humidity. Utility Model Content

[0003] The purpose of the utility model is to overcome the deficiencies in the prior art and provide a structure for reducing the rebound force of a touch FPC in an intelligent display module.

[0004] The purpose of this utility model is achieved through the following technical solutions:

[0005] A structure for reducing the rebound force of a touch FPC in an intelligent display module comprises: a display screen, a display FPC and a touch FPC; the center of the top of the display screen is arranged together with the touch FPC, the center of the bottom of the display screen is arranged with a COF driver chip, and the COF driver chip is arranged together with the display FPC; a bent hollow area is arranged at the top of the connection between the touch FPC and the display FPC, and a TPIC and a ZIF connector are arranged on the touch FPC.

[0006] In one of the embodiments, the surface of the display screen is provided with LTPS back panel glass, and the surface of the LTPS back panel glass is provided with Encap packaging glass.

[0007] In one of the embodiments, the center of the bottom front side of the LTPS back panel glass is interconnected with the COF driver chip, and the gold finger at the bottom of the COF driver chip is welded to the gold finger on the right side of the top of the display FPC.

[0008] In one of the embodiments, a display screen FPC plug-in terminal is provided on the right side of the display FPC, and the display FPC is a flexible circuit board.

[0009] In one embodiment, the touch FPC and the center of the top of the Encap packaging glass are connected to each other through a metal PIN, and the length and width of the front side of the touch FPC are smaller than the length and width of the front side of the display screen.

[0010] In one of the embodiments, the TPIC and the ZIF connector are arranged on the right side of the front side of the touch FPC.

[0011] In one of the embodiments, the lines in the bent hollow area of ​​the touch FPC are concentrated at two ends of the touch FPC to avoid wiring in the middle of the bent hollow area.

[0012] In one of the embodiments, the touch FPC is a double-layer board structure with a thickness of 99um, a substrate with ED copper on both sides in the middle, and polyimide with glue on the top of the substrate.

[0013] In one of the embodiments, the length of the front side of the display FPC is greater than the length of the front side of the display screen, and the width of the front side of the display FPC is less than the width of the front side of the display screen.

[0014] In one of the embodiments, a reinforcing plate is provided on the back of the ZIF connector and the TPIC on the touch FPC, and the reinforcing plate is a steel sheet.

[0015] Compared with the prior art, the utility model has at least the following advantages:

[0016] The utility model discloses a structure for reducing the rebound force of the touch FPC in the intelligent display module, by setting a bending hollow area at the top position of the connection between the display screen and the touch FPC, and concentrating the wiring in the bending area on the left and right sides of the touch FPC to allow the wiring to avoid the bending area, thereby hollowing out the entire film layer, effectively reducing the rebound stress of the FPC after bending, improving product reliability, and effectively reducing the occurrence of adverse conditions such as FPC warping in reliability test experiments of the intelligent display module in environments such as high temperature and high humidity. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 This is a schematic diagram of the overall front structure of the intelligent display module of the utility model for reducing the rebound force of the touch FPC.

[0019] In the figure: 1. Display screen; 11. Encap packaging glass; 12. LTPS backplane glass; 13. COF driver chip; 2. Display FPC; 21. Display screen FPC connector; 3. Touch FPC; 31. Bending hollow area; 32. TPIC; 33. ZIF connector. DETAILED DESCRIPTION

[0020] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively with reference to the relevant drawings. The drawings provide preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thoroughly and comprehensively understood.

[0021] In the description of the present application, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to 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 application.

[0022] Unless otherwise clearly stipulated and limited, terms such as "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0024] like Figure 1As shown, a structure for reducing the rebound force of a touch FPC in a smart display module includes: a display screen 1, a display FPC2 and a touch FPC3; the center of the top of the display screen 1 is arranged together with the touch FPC3, the center of the bottom of the display screen 1 is arranged with a COF driver chip 13, and the COF driver chip 13 is arranged together with the display FPC2; a bending hollowing area 31 is arranged at the top of the connection between the touch FPC3 and the display FPC2, and a TPIC32 and a ZIF connector 33 are arranged on the touch FPC3. It should be noted that both the touch FPC3 and the display FPC2 can be bent to the back of the display screen 1.

[0025] like Figure 1 As shown, in one embodiment, the surface of the display screen 1 is provided with an LTPS backplane glass 12, and the surface of the LTPS backplane glass 12 is provided with an Encap packaging glass 11. It should be noted that the LTPS backplane glass 12i is located at the bottom of the Encap packaging glass 11.

[0026] like Figure 1 As shown in the figure, in one embodiment, the center of the bottom of the front side of the LTPS backplane glass 12 is connected to the COF driver chip 13, and the gold finger at the bottom of the COF driver chip 13 is welded to the gold finger at the top right of the display FPC2. It should be noted that this design allows the COF driver chip 13 and the display FPC2 to perform data transmission and electrical connection with the display screen 1.

[0027] like Figure 1 As shown, in one embodiment, a display screen FPC plug-in terminal 21 is provided on the right side of the display FPC 2, and the display FPC 2 is a flexible circuit board. It should be noted that this design allows the display FPC 2 to be bent multiple times, so that it can be completely hidden by the display screen 1.

[0028] like Figure 1 As shown, in one embodiment, the touch FPC 3 and the center of the top of the Encap packaging glass 11 are connected to each other through a metal PIN, and the length and width of the front of the touch FPC 3 are smaller than the length and width of the front of the display screen 1. It should be noted that the touch FPC 3 can be bent and hidden at the back of the display screen 1.

[0029] like Figure 1 As shown, in one embodiment, the TPIC 32 and the ZIF connector 33 are arranged on the right side of the front of the touch FPC 3. A reinforcing plate is arranged on the back of the ZIF connector 33 and the TPIC 32 on the touch FPC 3. The reinforcing plate is a steel sheet. It should be noted that this design can enhance the heat dissipation capacity of the touch FPC 3.

[0030] like Figure 1As shown, in one embodiment, the lines in the bending hollow area 31 of the touch FPC3 are concentrated at the two ends of the touch FPC3, so that the wiring in the middle of the bending hollow area 31 is avoided. The touch FPC3 is a double-layer board structure with a thickness of 99um, in the middle of which is a substrate with double-sided ED copper, and above the substrate is polyimide with glue. It should be noted that the model of the substrate is: Changjieshi ED (31RLT8TZ), with a thickness of 44um, and the model of the polyimide is: Taihong, Damai Yellow PI: 0.5mil, AD: 15um (FHT0515), with a thickness of 27.5um, so the thickness of the touch FPC3 is only 99um, and the rebound stress in its bending hollow area is large.

[0031] like Figure 1 As shown, in one embodiment, the length of the front side of the display FPC 2 is greater than the length of the front side of the display screen 1 , and the width of the front side of the display FPC 2 is less than the width of the front side of the display screen 1 .

[0032] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A structure for reducing the rebound force of a touch FPC in an intelligent display module, characterized in that: include: Display screen (1), display FPC (2) and touch FPC (3); The center of the top of the display screen (1) is arranged together with the touch FPC (3), the center of the bottom of the display screen (1) is arranged with a COF driving chip (13), and the COF driving chip (13) is arranged together with the display FPC (2); A bent hollow area (31) is provided at the top of the connection between the touch FPC (3) and the display screen (1), and a TPIC (32) and a ZIF connector (33) are provided on the touch FPC (3).

2. The structure for reducing the rebound force of the touch FPC of the smart display module according to claim 1, characterized in that: The surface of the display screen (1) is provided with LTPS back panel glass (12), and the surface of the LTPS back panel glass (12) is provided with Encap packaging glass (11).

3. The structure for reducing the rebound force of the touch FPC of the smart display module according to claim 2, characterized in that: The center of the bottom front side of the LTPS back panel glass (12) is connected to the COF driver chip (13), and the gold finger at the bottom of the COF driver chip (13) is welded to the gold finger at the top right side of the display FPC (2).

4. The structure for reducing the rebound force of the touch FPC of the smart display module according to claim 1, characterized in that: A display screen FPC plug-in terminal (21) is arranged on the right side of the display FPC (2), and the display FPC (2) is a flexible circuit board.

5. The structure for reducing the rebound force of the touch FPC of the smart display module according to claim 3, characterized in that: The touch FPC (3) and the center of the top of the Encap packaging glass (11) are connected to each other through a metal PIN, and the length and width of the front of the touch FPC (3) are smaller than the length and width of the front of the display screen (1).

6. The structure for reducing the rebound force of the touch FPC of the smart display module according to claim 1, characterized in that: The TPIC (32) and the ZIF connector (33) are arranged on the right side of the front side of the touch control FPC (3).

7. The structure for reducing the rebound force of the touch FPC of the smart display module according to claim 1, characterized in that: The wiring in the bent hollow area (31) of the touch FPC (3) is concentrated at two ends of the touch FPC (3), so that wiring is avoided in the middle of the bent hollow area (31).

8. The structure for reducing the rebound force of the touch FPC of the smart display module according to claim 1, characterized in that: The touch FPC (3) is a double-layer board structure with a thickness of 99 um, a substrate with ED copper on both sides in the middle, and polyimide with glue on the top of the substrate.

9. The structure for reducing the rebound force of the touch FPC of the smart display module according to claim 1, characterized in that: The length of the front side of the display FPC (2) is greater than the length of the front side of the display screen (1), and the width of the front side of the display FPC (2) is less than the width of the front side of the display screen (1).

10. The structure for reducing the rebound force of the touch FPC of the smart display module according to claim 1, characterized in that: The ZIF connector (33) on the touch FPC (3) and the back of the TPIC (32) are provided with a reinforcing plate, which is a steel sheet.

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