Backlight structure capable of detecting whether main screen FPC deviates
By using a combination of conductive fabric body, release film and semi-printing lines in the backlight structure to detect and fix the FPC position, the short circuit problem caused by FPC deviation during assembly is solved, and the accurate fixation and assembly stability of FPC is achieved.
Patent Information
- Application Number
- CN202421010027.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-10
- Publication Date
- 2025-01-14
- Estimated Expiration
- 2034-05-10
AI Technical Summary
During the assembly process of display screen and backlight module, the change in the position of the FPC after bent may cause the conductive cloth to short circuit with the components of the main screen FPC, especially when the assembly is offset, it is difficult for the prior art to effectively detect and fix the position of the FPC.
A backlight structure is designed in which the conductive cloth body of the conductive cloth is pre-attached to the backlight module, and through the cooperation of the release film and the semi-printing line, the tearing mechanism of the alignment part and the attachment part is detected and fixed. The position of the FPC ensures that the conductive cloth is properly attached to avoid short circuits.
This method can simply and effectively detect whether the FPC is biased, and ensure that the FPC is fixed to the back of the backlight module, prevent short circuits, and improve assembly accuracy and stability.
Smart Images
Figure CN222354169U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of display modules, in particular to a backlight structure capable of detecting whether a main screen FPC is offset. Background Art
[0002] Liquid crystal display devices are widely used in various information, communication and consumer electronic products. Liquid crystal display modules are mainly composed of liquid crystal display screens and backlight modules. The main screen FPC will be bound to the liquid crystal display screen, and the main screen FPC needs to be bent to the back of the backlight module. In conventional module structures, in order to solve EMC problems, conductive cloth / shielding paper is usually used to cover the main screen FPC.
[0003] After the display screen and the backlight module are assembled, the FPC is bent and fixed to the back of the backlight module, and then the main screen FPC is protected by conductive cloth. The conductive cloth is attached along the alignment line on the back of the backlight module to fix the main screen FPC and prevent static interference. When the display screen and the backlight module are assembled offset, the position of the main screen FPC after bending will also change. If the conductive cloth is still attached according to the original alignment line, the conductive part will contact the components on the main screen FPC and cause a short circuit. Utility Model Content
[0004] The purpose of the utility model is to overcome the shortcomings of the prior art and provide a backlight structure capable of detecting whether the main screen FPC is offset.
[0005] The purpose of this utility model is achieved through the following technical solutions:
[0006] A backlight structure capable of detecting whether a main screen FPC is misaligned comprises: a backlight module, a display screen is arranged on one side of the backlight module, an FPC is bound to the display screen, a conductive cloth is arranged on the back side of the backlight module, the upper part of the conductive cloth is pre-attached to the backlight module, and the lower part of the conductive cloth is attached to the FPC after the FPC is bent to the backlight module and aligned.
[0007] In one embodiment, the conductive cloth includes a conductive cloth body and a release film disposed on one side of the conductive cloth body, and the release film is used to protect the conductive cloth body that is not attached to the back side of the backlight module.
[0008] In one embodiment, the conductive fabric body is provided with adhesive on one side, and a conductive adhesive is provided on the side of the conductive fabric body facing the release film.
[0009] In one embodiment, the thickness of the conductive fabric body is 0.05 mm-1.0 mm.
[0010] In one embodiment, the release film includes an alignment portion and an attachment portion, the alignment portion and the attachment portion are integrally formed, the alignment portion is located near the upper edge of the release film, and the attachment portion is located below the alignment portion.
[0011] In one embodiment, a half-punched line for separation is provided between the alignment portion and the attachment portion, and the half-punched line is located at the connection between the alignment portion and the attachment portion.
[0012] In one embodiment, an alignment line for aligning the conductive cloth is disposed on the back side of the backlight module, and the alignment line is composed of a plurality of short lines, and the plurality of short lines are disposed along the upper outer edge of the conductive cloth.
[0013] In one embodiment, the upper edge of the alignment portion is arranged along the inner side line of the alignment line, and the alignment portion is torn off after being aligned with the alignment line, so as to attach the conductive cloth body corresponding to the alignment portion to the backlight module.
[0014] In one embodiment, the attaching portion is torn off after the FPC is bent to the backlight module and aligned, and the conductive cloth body corresponding to the attaching portion is attached to the FPC.
[0015] In one embodiment, a plug-in terminal for connecting to a client host is disposed at one end of the FPC away from the display screen, the plug-in terminal is located on the back side of the backlight module, and a clearance groove is provided on the conductive fabric body relative to the plug-in terminal.
[0016] Compared with the prior art, the utility model has at least the following advantages:
[0017] The utility model discloses a backlight structure capable of detecting whether the FPC of the main screen is misaligned. A release film is arranged on one side of the conductive cloth body. When the alignment portion of the release film is aligned with the alignment line, the alignment portion is torn off along the half-printed line so that the conductive cloth body position corresponding to the alignment portion is attached to the backlight module along the alignment line, thereby preliminarily fixing the conductive cloth body. When the FPC is bent to the back of the backlight module, the conductive cloth body corresponding to the attachment portion is preliminarily covered on the FPC to detect whether the position of the FPC is misaligned. When the position of the FPC is aligned, the attachment portion is torn off to attach the conductive cloth body position corresponding to the attachment portion to the FPC, and the FPC is fixed to the back of the backlight module. The method for detecting whether the FPC is misaligned is simple and can fix the FPC on the backlight module. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for use in the embodiments are briefly introduced below.
[0019] Figure 1 A schematic diagram of a backlight structure provided by the utility model that can detect whether the main screen FPC is offset;
[0020] Figure 2 A schematic diagram of the front structure of a conductive cloth in a backlight structure capable of detecting whether the main screen FPC is offset provided by the utility model;
[0021] Figure 3 The utility model provides a schematic diagram of the side structure of a conductive cloth in a backlight structure capable of detecting whether the main screen FPC is offset.
[0022] Description of the drawings: 10, backlight module; 11, alignment line; 20, FPC; 21, plug-in terminal; 30, conductive fabric; 31, conductive fabric body; 32, release film; 321, alignment part; 322, attachment part; 40, half-printing line; 50, clearance groove. DETAILED DESCRIPTION
[0023] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings.
[0024] A backlight structure that can detect whether the main screen FPC is offset, referring to Figure 1 , including a backlight module 10, a display screen is arranged on one side of the backlight module 10, an FPC 20 is bound to the display screen, one end of the FPC 20 is bound to the display screen, and the other end of the FPC 20 is bent to the back side of the backlight module 10.
[0025] Reference Figure 1 A conductive cloth 30 is provided on the back of the backlight module 10. The conductive cloth 30 is used to cover the FPC 20 to conduct the generated static electricity to the outside to prevent the static electricity from damaging the components on the FPC 20. The upper part of the conductive cloth 30 is pre-attached to the backlight module 10. When the FPC 20 is bent and aligned, the lower part of the conductive cloth 30 is attached to the FPC 20.
[0026] Reference Figure 2 and Figure 3 The conductive fabric 30 includes a conductive fabric body 31 and a release film 32 disposed on one side of the conductive fabric body 31. The release film 32 is used to protect the conductive fabric body 31 that is not attached to the back of the backlight module 10. The conductive fabric body 31 is provided with adhesive on one side. The conductive fabric body 31 is provided with adhesive on one side facing the release film 32, so that the conductive fabric body 31 can be attached to the FPC 20 and the FPC 20 can be fixed to the back of the backlight module 10.
[0027] Further, refer to Figure 2 and Figure 3The thickness of the conductive fabric body 31 is 0.05 mm to 1.0 mm. A conductive adhesive is provided on the side of the conductive fabric body 31 facing the release film 32, so that the conductive fabric body 31 is provided with adhesive on one side.
[0028] Reference Figure 3 The release film 32 includes an alignment portion 321 and an attachment portion 322. The alignment portion 321 and the attachment portion 322 are integrally formed. The alignment portion 321 is located near the upper edge of the release film 32, and the alignment portion 321 plays a role in alignment. The attachment portion 322 is located below the alignment portion 321, and the attachment portion 322 occupies most of the area of the release film 32. The attachment portion 322 is used to fix the FPC 20.
[0029] Reference Figure 3 A half-printed line 40 for separation is provided between the alignment portion 321 and the attachment portion 322. The half-printed line 40 is located at the connection between the alignment portion 321 and the attachment portion 322. The half-printed line 40 connects the alignment portion 321 and the attachment portion 322, and plays a role in separation when the alignment portion 321 or the attachment portion 322 needs to be torn off.
[0030] Reference Figure 1 The back of the backlight module 10 is provided with an alignment line 11, which is used for aligning the conductive cloth 30 so that the conductive cloth 30 is accurately attached. The alignment line 11 is composed of a plurality of short lines, which are arranged along the upper outer edge of the conductive cloth 30 so that the upper part of the conductive cloth 30 is fixed within the range of the plurality of short lines.
[0031] Reference Figure 1 and Figure 2 , the upper edge of the alignment portion 321 is arranged along the inner side line of the alignment line 11. When the alignment portion 321 is aligned with the alignment line 11, the alignment portion 321 is torn off along the half-printing line 40, so that the position of the conductive cloth body 31 corresponding to the alignment portion 321 is attached to the backlight module 10 along the alignment line 11. The position of the conductive cloth body 31 corresponding to the alignment portion 321 is attached to the backlight module 10 to play a role in preliminarily fixing the conductive cloth body 31.
[0032] Reference Figure 1 and Figure 2 When the FPC 20 is bent to the back of the backlight module 10, the conductive cloth body 31 corresponding to the attachment portion 322 is pre-covered on the FPC 20 to detect whether the position of the FPC 20 is offset. When the position of the FPC 20 is aligned, the attachment portion 322 is torn off to attach the conductive cloth body 31 corresponding to the attachment portion 322 to the FPC 20, and the FPC 20 is fixed to the back of the backlight module 10. The method for detecting whether the FPC 20 is offset is simple.
[0033] Reference Figure 1 and Figure 2 The end of the FPC 20 away from the display screen is provided with a plug-in terminal 21, which is used to connect to the client host. When the FPC 20 is bent to the back of the backlight module 10, the plug-in terminal 21 is located at the back of the backlight module 10. The conductive fabric body 31 is provided with a clearance groove 50 relative to the plug-in terminal 21 to prevent the conductive fabric body 31 from being attached to the plug-in terminal 21 and affecting the connection between the plug-in terminal 21 and the client host.
[0034] 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 backlight structure capable of detecting whether the main screen FPC is offset, characterized in that: include: A backlight module (10), wherein a display screen is arranged on one side of the backlight module (10), an FPC (20) is bound to the display screen, a conductive cloth (30) is arranged on the back side of the backlight module (10), an upper portion of the conductive cloth (30) is pre-attached to the backlight module (10), and a lower portion of the conductive cloth (30) is attached to the FPC (20) after being bent to the backlight module (10) and aligned.
2. A backlight structure capable of detecting whether the main screen FPC is offset according to claim 1, characterized in that: The conductive cloth (30) comprises a conductive cloth body (31) and a release film (32) arranged on one side of the conductive cloth body (31), wherein the release film (32) is used to protect the conductive cloth body (31) that is not attached to the back side of the backlight module (10).
3. A backlight structure capable of detecting whether the main screen FPC is offset according to claim 2, characterized in that: The conductive cloth body (31) is provided with adhesive on one side, and a conductive adhesive is provided on the side of the conductive cloth body (31) facing the release film (32).
4. A backlight structure capable of detecting whether the main screen FPC is offset according to claim 3, characterized in that: The thickness of the conductive cloth body (31) is 0.05 mm-1.0 mm.
5. A backlight structure capable of detecting whether the main screen FPC is offset according to claim 4, characterized in that: The release film (32) comprises an alignment portion (321) and an attachment portion (322), wherein the alignment portion (321) and the attachment portion (322) are integrally formed, the alignment portion (321) is located near the upper edge of the release film (32), and the attachment portion (322) is located below the alignment portion (321).
6. A backlight structure capable of detecting whether the main screen FPC is offset according to claim 5, characterized in that: A semi-punched line (40) for separation is provided between the alignment portion (321) and the attachment portion (322), and the semi-punched line (40) is located at the connection between the alignment portion (321) and the attachment portion (322).
7. A backlight structure capable of detecting whether the main screen FPC is offset according to claim 6, characterized in that: An alignment line (11) for aligning the conductive cloth (30) is arranged on the back side of the backlight module (10), and the alignment line (11) is composed of a plurality of short lines, and the plurality of short lines are arranged along the upper outer edge of the conductive cloth (30).
8. A backlight structure capable of detecting whether the main screen FPC is offset according to claim 7, characterized in that: The upper edge of the alignment portion (321) is arranged along the inner side line of the alignment line (11), and the alignment portion (321) is torn off after being aligned with the alignment line (11), so that the conductive cloth body (31) corresponding to the alignment portion (321) is attached to the backlight module (10).
9. A backlight structure capable of detecting whether the main screen FPC is offset according to claim 8, characterized in that: The attachment portion (322) is torn off after the FPC (20) is bent to the backlight module (10) and aligned, and the conductive cloth body (31) corresponding to the attachment portion (322) is attached to the FPC (20).
10. A backlight structure capable of detecting whether the main screen FPC is offset according to claim 9, characterized in that: A plug-in terminal (21) for connecting to a client host is provided at one end of the FPC (20) away from the display screen, the plug-in terminal (21) is located on the back side of the backlight module (10), and a clearance groove (50) is provided on the conductive fabric body (31) relative to the plug-in terminal (21).