Protruding length over-standard detection clamp for display module FPC (Flexible Printed Circuit) bending area

Abstract

The utility model discloses a protruding length over-standard detection clamp of a display module FPC bending area. The protruding length over-standard detection clamp comprises a base, a swing sheet, a first baffle plate and a second baffle plate. The base comprises a first side and a second side adjacent to the first side, the first baffle is arranged on the first side, the second baffle is arranged on the second side, the top of the second baffle extends in the length direction of the base to form a suspended plate, a display module testing area is arranged between the suspended plate and the base, and the display module testing area is arranged between the suspended plate and the base. A clamping groove is formed in the suspension plate, the swing piece is movably clamped in the clamping groove, when the swing piece is jacked up by a protruding position of FPC bending of the display module in a test, it is indicated that the protruding length of FPC bending of the display module exceeds the standard, the display module needs to be reworked, and the clamp can conduct line following test, is small in operation difficulty and high in detection efficiency and can guarantee the product quality.

Description

Technical Field

[0001] The utility model relates to the field of display screens, in particular to a fixture for detecting excessive protrusion length of a bending zone of an FPC of a display module. Background Art

[0002] Before assembling the display module and the middle frame, the main screen FPC needs to be bent and attached to the backlight iron frame. The entire machine casing needs to make an avoidance treatment for the FPC bending area so that the display module can be set in the middle frame. The avoidance position needs to have a certain width to assemble the middle frame. Therefore, it is required that the protruding position of the main screen FPC bending of the display module must not exceed the minimum width of the avoidance position, otherwise the assembly of the middle frame will squeeze the module FPC, causing damage to the FPC circuit and leading to functional problems.

[0003] At present, the production line aligns the FPC of the display module by printing the alignment lines on the backlight iron frame, and then using the alignment lines printed on the backlight to bend the FPC for alignment. However, manual alignment is prone to attachment deviations, and the material size also has tolerances, which can easily lead to products that exceed the specifications flowing out to the customer, causing quality risks. Therefore, it is necessary to control the protruding parts of the display module. Conventional measurement using secondary instrumentation is accurate, but the measurement efficiency is low, and it is impossible to conduct on-line testing, and it is impossible to achieve 100% detection of mass production. Utility Model Content

[0004] The utility model aims to overcome the shortcomings of the prior art and provide a fixture for detecting the over-standard protrusion length of a bending zone of an FPC of a display module.

[0005] The purpose of this utility model is achieved through the following technical solutions:

[0006] A fixture for detecting excessive protrusion length of an FPC bending zone, comprising: a base, a swinging piece, a first baffle and a second baffle; the base comprises a first side and a second side adjacent to the first side, the first baffle is arranged on the first side, the second baffle is arranged on the second side, a suspended plate is extended from the top of the second baffle along the length direction of the base, a display module test zone is provided between the suspended plate and the base, a slot is provided in the suspended plate, the swinging piece is movably engaged in the slot, and when the FPC bending zone on the display module to be tested lifts up the swinging piece, the protrusion length of the FPC bend of the display module exceeds the standard.

[0007] In one of the embodiments, the card slot includes a first card slot and a second card slot, the first card slot and the second card slot are respectively arranged on the same side of the suspended plate, and the swing piece is movably connected to the first card slot and the second card slot.

[0008] In one embodiment, the width of the first card slot is greater than the width of the second card slot.

[0009] In one embodiment, the first baffle is aligned with a corner of the first side.

[0010] In one embodiment, the base is provided with a flexible layer on one side of the display module test area.

[0011] In one embodiment, the swing plate is an aluminum plate.

[0012] In one embodiment, the base is provided with a notch on a side opposite to the second side, and the notch is used to take out the display module.

[0013] In one of the embodiments, the protrusion length exceeding standard detection fixture of the bending area of ​​the FPC of the display module further includes soft foam, and the soft foam is arranged on the side of the suspension plate facing the display module test area.

[0014] In one of the embodiments, the protrusion length exceeding standard detection fixture of the bending zone of the FPC of the display module also includes an alarm component, and the alarm component includes a pressure sensor and a pressure display component. The swing plate is provided with a pressure sensor on a side close to the display module to be tested, and the pressure display component is electrically connected to the pressure sensor.

[0015] In one embodiment, the alarm component further includes a warning light, which lights up when the pressure sensor detects pressure.

[0016] Compared with the prior art, the utility model has at least the following advantages:

[0017] The utility model discloses a fixture for detecting excessive protrusion length of a bending zone of an FPC of a display module by setting a base, a swing plate, a first baffle plate and a second baffle plate. When the protrusion of the bending zone of the FPC of the display module under test lifts up the swing plate, it indicates that the protrusion length of the bending zone of the FPC of the display module exceeds the standard, and the display module needs to be reworked. The fixture can be used for on-line testing, has low operating difficulty and high detection efficiency, and can ensure product quality. 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 It is a front structural schematic diagram of a display module mounted with a fixture for detecting excessive protrusion length of a bending zone of an FPC of a display module in one embodiment of the utility model;

[0020] Figure 2It is a three-dimensional structural schematic diagram of a fixture for detecting excessive protrusion length of a bending zone of an FPC of a display module in one embodiment of the utility model.

[0021] Reference numerals:

[0022] A protrusion length exceeding standard detection fixture 100 of the bending area of ​​the FPC of the display module, a base 10, a first baffle 20, a second baffle 30, a suspended plate 40, a swing piece 50, a soft foam 60, a notch 70, a warning light 80, a display module 200, a cover plate 210, and an FPC 220. 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] The present application proposes a jig 100 for detecting the protrusion length exceeding the standard of the FPC bending area of ​​the display module, comprising: a base 10, a swing plate 50, a first baffle 20 and a second baffle 30. The base 10 supports the display module 200, and the first baffle 20 and the second baffle 30 limit the display module 200, so that the display module 200 is detected within a limited area. The swing plate 50 is used to detect whether the protrusion length of the FPC bending of the display module 200 exceeds the standard.

[0025] Specifically, see Figure 1 and Figure 2 The base 10 includes a first side and a second side adjacent to the first side, the first baffle 20 is arranged on the first side, and the second baffle 30 is arranged on the second side. A suspended plate 40 is extended from the top of the second baffle 30 along the length direction of the base 10, and a display module 200 test area is provided between the suspended plate 40 and the base 10. The display module 200 test area is used to place the display module 200, and the display module 200 is tested in the display module 200 test area. A card slot is provided in the suspended plate 40, and the swinging piece 50 is movably connected to the card slot, so that the swinging piece 50 can swing freely. Preferably, the swinging piece 50 is an aluminum sheet, and the aluminum sheet can form a dense aluminum oxide film on its surface, which has strong corrosion resistance, so as to avoid the swinging piece 50 from malfunctioning due to chemical changes, resulting in misdetection.

[0026] It should be noted that the material of the fixture includes but is not limited to acrylic plate, bakelite and stainless steel. In addition, under normal circumstances, the length direction of the swing plate 50 is perpendicular to the length direction of the suspended plate 40. During the test, the tester can hold the cover plate 210 and the display module 200 against the first baffle plate 20 and the second baffle plate 30.

[0027] When the bending area of ​​FPC220 on the display module 200 to be tested lifts up the swing piece 50, the swing piece 50 appears to be tilted, which means that the protruding length of the bending FPC220 of the display module 200 exceeds the standard, and the display module 200 needs to be reworked. The fixture can be used for on-line testing, with low operating difficulty and high detection efficiency, which can ensure product quality.

[0028] It should be noted that the display module 200 includes a cover plate 210 and a middle frame. The middle frame is used to set the display screen, FPC220, etc., and the cover plate 210 covers the middle frame. The length of the cover plate 210 is greater than the length of the display screen. When the display module 200 is placed in the display module 200 test area, the cover plate 210 faces the base 10, and the adjacent two sides of the cover plate 210 are supported on the first baffle plate 20 and the second baffle plate 30. The width between the swing plate 50 and the second baffle plate 30 is the clearance width of the middle frame. Half of the difference between the length of the cover plate 210 and the protruding length of the bending area of ​​the FPC220 of the display module 200 is the clearance position. The minimum value of the clearance position is equal to the clearance width of the middle frame, which is used to assemble the middle frame.

[0029] In one embodiment, see Figure 2 The card slot includes a first card slot and a second card slot. The first card slot is used to test whether the protruding length of the main screen FPC 220 meets the standard, and the second card slot is used to test whether the protruding length of the backlight FPC 220 meets the standard. The first card slot and the second card slot are respectively arranged on the same side of the suspension plate 40, and the first card slot and the second card slot are respectively movably connected with a swing piece 50. When testing the main screen FPC or the backlight FPC, the other swing piece 50 that is not needed needs to be disassembled to improve the accuracy of the test.

[0030] Furthermore, the width of the main screen FPC is greater than that of the backlight FPC. To match the swing piece 50 therewith, the width of the first card slot is greater than that of the second card slot, and the width of the swing piece 50 of the first card slot is greater than that of the second card slot.

[0031] In one embodiment, the first baffle 20 is aligned with the corner of the first side, and the first baffle 20 is long enough so that there is enough fixing position between the first baffle 20 and the first side of the base 10, so that the first baffle 20 can be firmly fixed on the first side of the base 10, thereby improving the stability of the clamp.

[0032] Furthermore, the base 10 is provided with a flexible layer on one side of the test area of ​​the display module 200, which can prevent the cover plate 210 from being scratched and improve the product quality.

[0033] Furthermore, a notch 70 is provided on the opposite side of the second side of the base 10 to facilitate loading and unloading of the display module 200 .

[0034] Please refer to 1. The protrusion length exceeding standard detection fixture 100 of the bending area of ​​the display module FPC also includes soft foam 60. The soft foam 60 is arranged on the side of the suspension plate 40 facing the test area of ​​the display module 200. The soft foam 60 has a certain softness and elasticity to prevent the display module 200 from being scratched by the suspension plate 40 during the loading and unloading process.

[0035] In addition, the display module FPC bending zone protrusion length exceeding the standard detection fixture 100 also includes an alarm component, which includes a pressure sensor and a display component. The swing plate 50 is provided with a pressure sensor on the side close to the display module 200 to be tested. The pressure display component is electrically connected to the pressure sensor. When the pressure sensor senses that the test module exerts pressure on the swing plate 50, the pressure display component can display the pressure value displayed by the pressure sensor, so that the tester can intuitively see that the protrusion of the FPC 220 exceeds the standard and needs to be reworked. For further information, please refer to Figure 1 and Figure 2 The alarm component also includes a warning light 80. When the pressure sensor detects pressure, the warning light 80 lights up synchronously, making the test result more intuitive. The tester can judge whether the protruding length of FPC220 exceeds the standard by observing the on and off of the warning light 80. Alternatively, if the warning light 80 lights up red, it means that the protruding length of the module FPC220 meets the standard, and if the warning light 80 lights up green, it means that the protruding position of the module FPC220 is greater than the design value and does not meet the specification.

[0036] 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 fixture for detecting excessive protrusion length of the bending area of ​​FPC of a display module, characterized in that: include: A base, a swing plate, a first baffle and a second baffle; The base includes a first side and a second side adjacent to the first side, the first baffle is arranged on the first side, the second baffle is arranged on the second side, a suspended plate is extended from the top of the second baffle along the length direction of the base, a display module test area is provided between the suspended plate and the base, a slot is provided in the suspended plate, the swing piece is movably connected to the slot, and when the FPC bending area on the display module to be tested lifts up the swing piece, the protruding length of the FPC bending of the display module exceeds the standard.

2. The jig for detecting excessive protrusion length of the bending area of ​​the FPC of the display module according to claim 1, characterized in that: The card slot includes a first card slot and a second card slot, the first card slot and the second card slot are respectively arranged on the same side of the suspended plate, and the swing piece is movably connected to the first card slot and the second card slot.

3. The jig for detecting excessive protrusion length of the bending area of ​​the FPC of the display module according to claim 2, characterized in that: The width of the first card slot is greater than the width of the second card slot.

4. The jig for detecting excessive protrusion length of the bending area of ​​the FPC of the display module according to claim 1, characterized in that: The first baffle is aligned with the corner of the first side.

5. The jig for detecting excessive protrusion length of the bending area of ​​the FPC of the display module according to claim 1, characterized in that: The base is provided with a flexible layer on one side of the display module test area.

6. The jig for detecting excessive protrusion length of a bending zone of a display module FPC according to claim 1, characterized in that: The swing sheet is an aluminum sheet.

7. The jig for detecting excessive protrusion length of the bending area of ​​the FPC of the display module according to claim 1, characterized in that: The base is provided with a notch on the side opposite to the second side, and the notch is used for taking out the display module.

8. The jig for detecting excessive protrusion length of a bending zone of a display module FPC according to claim 1, characterized in that: It also includes soft foam, and the soft foam is arranged on the side of the suspended board facing the display module test area.

9. The jig for detecting excessive protrusion length of the bending area of ​​the FPC of the display module according to claim 1, characterized in that: It also includes an alarm component, which includes a pressure sensor and a pressure display component. The swing piece is provided with a pressure sensor on one side close to the display module to be tested, and the pressure display component is electrically connected to the pressure sensor.

10. The jig for detecting excessive protrusion length of the bending area of ​​the FPC of the display module according to claim 9, characterized in that: The alarm assembly further comprises a warning light, which lights up when the pressure sensor detects pressure.

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