LCD (Liquid Crystal Display) silver paste dispensing and conduction detection device

Abstract

The utility model provides an LCD (Liquid Crystal Display) silver paste dispensing and conduction detection device, which is used for detecting an LCD display screen to be detected and comprises a control end, a fixed bracket, a dispensing assembly, a conduction detection assembly and a detection platform assembly, the fixing support comprises two supporting plates and two guide rails, the two supporting plates are connected through the two guide rails arranged in a spaced mode, the control end is arranged on one side of one supporting plate, the dispensing assembly and the conductive detection assembly are arranged on the fixing support, the dispensing assembly is arranged above the conductive detection assembly, and the detection platform assembly is fixedly connected with the lower ends of the two supporting plates. The detection platform assembly comprises a detection platform body and an operation position, the operation position is arranged on the detection platform body, the operation position is used for placing the LCD display screens to be detected, through the dispensing assembly and the conductive detection assembly, the whole process is easy to operate, the false detection rate is low, silver paste injection and conductive detection can be carried out on the two LCD display screens to be detected at the same time, and the detection efficiency is improved. Cross operation can be realized, so that the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of LCD display screens, in particular to an LCD silver paste dispensing and conduction detection device. Background Art

[0002] The IPS (In-Panel Switching)-LCD display screen is a display technology based on TFT (Thin Film Transistor). By changing the arrangement of liquid crystal molecules and adopting horizontal arrangement, the IPS screen performs excellently in terms of response speed, viewing angle, color authenticity, etc. Compared with traditional soft-screen liquid crystal displays, when the IPS hard screen encounters external pressure, its molecular structure is more solid and stable, and it will not cause image distortion or affect the image color, thus protecting the image effect to the greatest extent. In addition, the IPS screen also has advantages such as environmental protection and power saving, accurate color, and its size advantage also gives it a certain competitiveness in the market.

[0003] During the production process of the IPS (In-Panel Switching)-LCD display screen, due to the characteristics of IPS products, it is necessary to use silver paste to conduct electricity between the upper surface (CF surface) and the lower surface (TFT surface, connected to the ground through FPC pins) of the LCD to release the residual static electricity on the CF surface. When the silver paste conduction is poor, problems such as display color change and display abnormality will occur. Therefore, it is necessary to detect the silver paste conduction effect.

[0004] At present, the commonly used detection method is to measure manually with a multimeter, which has low detection efficiency and is prone to causing defects. Summary of the Utility Model

[0005] In view of the above situation, it is necessary to provide an LCD silver paste dispensing and conduction detection device for the problem of low conduction detection efficiency of LCD display screens in the prior art.

[0006] An LCD silver paste dispensing and conduction detection device is used to detect a to-be-tested LCD display screen. The LCD silver paste dispensing and conduction detection device includes a control end, a fixed bracket, a dispensing component, a conductive detection component, and a detection platform component;

[0007] The fixed bracket includes two support plates and two guide rails. The two support plates are connected by the two guide rails arranged at intervals, and the control end is arranged on one side of one of the support plates;

[0008] The dispensing assembly and the conductive detection assembly are arranged on the fixed bracket. The dispensing assembly is arranged above the conductive detection assembly. The dispensing assembly includes a first control unit, a first connecting rod, and a dispensing head. Two ends of the first connecting rod are respectively connected to the first control unit and the dispensing head. A detachably connected dispenser is arranged on the dispensing head. The dispenser is used to inject silver paste into the LCD display screen to be tested. The conductive detection assembly includes a second control unit, a pressing rod mechanism, and a detection link mechanism. The pressing rod mechanism includes a first pressing rod assembly and a second pressing rod assembly. The first pressing rod assembly and the second pressing rod assembly are respectively arranged on opposite sides of the second control unit. A detection link mechanism is arranged at one end of the first pressing rod assembly facing away from the second control unit. The detection link mechanism and the pressing rod mechanism are used to detect the LCD display screen to be tested. The first control unit and the second control unit are respectively slidably connected to the fixed bracket through the guide rails. The first control unit and the second control unit are respectively electrically connected to the control end;

[0009] The detection platform assembly is fixedly connected to the lower ends of the two support plates respectively. The detection platform assembly includes a detection platform body and an operation position. The operation position includes a first operation position and a second operation position. The operation position is arranged on the detection platform body. The operation position is used to place the LCD display screen to be tested.

[0010] For the above LCD silver paste dispensing and conduction detection device, place two LCD display screens to be tested on the two operation positions. Use the control end to set the movement parameters of the first control unit and the first connecting rod. The first control unit moves horizontally along the guide rail, and the first connecting rod moves vertically along the first control unit. After the first connecting rod moves to directly above the LCD display screen to be tested, it descends, and the dispenser injects silver paste outward. Then use the control end to set the movement parameters of the second control unit and the pressing rod mechanism. The second control unit moves horizontally along the guide rail, and the pressing rod mechanism moves vertically along the second control unit. After the pressing rod mechanism is located on both sides directly above the LCD display screen to be tested, it descends, and the LCD display screen to be tested is detected through the detection block link. The whole process is simple to operate and has a low misdetection rate. It can respectively inject silver paste and conduct conductive detection on the two LCD display screens to be tested at the same time, and can perform cross operations, thereby improving work efficiency.

[0011] Further, the first pressing rod assembly includes a first pressing rod and a first pressing block. One end of the first pressing rod is connected to the second control unit, and the other end of the first pressing rod extends away from the second control unit. The first pressing block is fixedly arranged on one side of the first pressing rod. The second pressing rod assembly includes a second pressing rod and a second pressing block. One end of the second pressing rod is connected to the second control unit, and the other end of the second pressing rod is fixedly provided with the second pressing block. Conductive sponges are arranged at the bottoms of the first pressing block and the second pressing block, and the conductive sponges are electrically connected to the LCD display screen to be tested.

[0012] Further, the detection link mechanism includes a detection rod and a detection block. One end of the detection rod is connected to the first pressing rod, and the detection block is arranged at the other end of the detection rod. A conductive rubber strip is arranged on the side of the detection block facing the first pressing rod, and the conductive rubber strip is electrically connected to the LCD display screen to be tested.

[0013] Further, the first operation position and the second operation position are arranged on both sides of the detection platform body. Heating blocks are respectively arranged on one side of the first operation position and the second operation position, and the heating blocks are used for heating and curing the silver paste on the LCD display screen to be tested.

[0014] Further, a first button, a first indicator light, a second button and a second indicator light are further arranged on the detection platform body. The first button and the first indicator light are adjacent to the first operation position, and the second button and the second indicator light are adjacent to the second operation position. After the first button is pressed, it indicates that the first operation position sends a start signal to the control end. After the second button is pressed, it indicates that the second operation position sends a start signal to the control end.

[0015] Further, a plurality of limiting blocks are respectively arranged on the peripheries of the first operation position and the second operation position. The limiting blocks are movably connected to the detection platform body, and the limiting blocks are used for fixing the LCD display screen to be tested. A plurality of adsorption holes and channels are arranged at the bottom of the operation position. The adsorption holes and the channels are communicated. A vacuum pump is arranged on one side of the detection platform body. The channel is communicated with one end of the vacuum pump through an air pipe. The vacuum pump is electrically connected to the control end, and the adsorption holes are used for adsorbing the LCD display screen to be tested.

[0016] Further, the control end includes a control end body, a display panel and a power switch. The display panel is arranged at one end of the control end body, and the power switch is arranged adjacent to the display panel. The display panel is used for setting the corresponding parameters of the dispensing assembly, the conductive detection assembly and the heating block, and the power switch is used for controlling the on-off of the power supply of the control end. Description of the Drawings

[0017] Figure 1 Structural schematic diagram of the first embodiment of the present utility model;

[0018] Figure 2 of the present utility model Figure 1 Enlarged view of part A in

[0019] Reference numerals: 1, control end; 11, control end body; 12, display panel; 13, power switch; 2, fixing bracket; 21, support plate; 22, guide rail; 3, dispensing assembly; 31, first control unit; 32, first connecting rod; 33, dispensing head; 34, dispenser; 341, syringe; 342, group push rod; 343, injection port; 35, first motor; 36, rack; 37, fixing block; 4, conductive detection assembly; 41, second control unit; 42, pressing rod mechanism; 421, first pressing rod assembly; 4211, first pressing rod; 4212, first pressing block; 422, second pressing rod assembly; 4221, second pressing rod; 4222, second pressing block; 43, detection link mechanism; 431, detection rod; 432, detection block; 44, third connecting rod; 5, detection platform assembly; 51, detection platform body; 511, channel; 52, first operation position; 521, first button; 522, first indicator light; 523, adsorption hole; 53, second operation position; 531, second button; 532, second indicator light; 54, heating block; 55, limiting block; 56, vacuum pump; 57, air pipe. Detailed implementation manners

[0020] To facilitate the understanding of the present utility model, the present utility model will be described more comprehensively below with reference to the relevant drawings. Embodiments of the present utility model are shown in the drawings. However, the present utility model 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 utility model more thorough and comprehensive.

[0021] It should be noted that when an element is referred to as being "fixed on" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for the purpose of illustration.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this utility model belongs. The terms used in the specification of this utility model herein are only for the purpose of describing specific embodiments and are not intended to limit this utility model. The term "and / or" as used herein includes any and all combinations of one or more of the related listed items. Moreover, the various embodiments of this utility model, the features between the embodiments, and the features of the embodiments and embodiments can be freely combined on the premise of no obvious conflict and contradiction.

[0023] An LCD silver paste dispensing and conduction detection device is used to detect a to-be-detected LCD display screen, as Figure 1 shown, the LCD silver paste dispensing and conduction detection device includes a control end 1, a fixed bracket 2, a dispensing assembly 3, a conductive detection assembly 4, and a detection platform assembly 5.

[0024] Specifically, the fixed bracket 2 includes two support plates 21 and two guide rails 22. The two support plates 21 are connected by the two guide rails 22 arranged at intervals, and the control end 1 is arranged on one side of one of the support plates 21.

[0025] Specifically, the dispensing assembly 3 and the conductive detection assembly 4 are arranged on the fixed bracket 2, and the dispensing assembly 3 is arranged above the conductive detection assembly 4. The dispensing assembly 3 includes a first control unit 31, a first connecting rod 32, and a dispensing head 33. The two ends of the first connecting rod 32 are respectively connected to the first control unit 31 and the dispensing head 33. A detachable dispenser 34 is arranged on the dispensing head 33. The dispenser 34 is used to inject silver paste into the to-be-detected LCD display screen. The conductive detection assembly 4 includes a second control unit 41, a pressing rod mechanism 42, and a detection link mechanism 43. The detection link mechanism 43 and the pressing rod mechanism 42 are used to detect the to-be-detected LCD display screen. The first control unit 31 and the second control unit 41 are respectively slidably connected to the fixed bracket 2 through the guide rails 22, and the first control unit 31 and the second control unit 41 are respectively electrically connected to the control end 1.

[0026] Specifically, as Figure 1 and 2 shown, the dispenser 34 includes a cylinder body 341 and a boosting rod 342. The boosting rod 342 is arranged in the cylinder body 341 and is slidably connected to the cylinder body 341. An injection port 343 is arranged at the lower end of the cylinder body 341. The injection port 343 extends towards the detection platform body 51. A first motor 35 and a rack 36 are respectively arranged on one side of the dispenser 34. The first motor 35 is engaged with the rack 36. The upper end of the rack 36 is connected to the boosting rod 342 through a fixing block 37.

[0027] It should be noted that a second motor (not shown) is provided in the first control unit 31. The guide rail 22 passes through the first control unit 31 and is in meshing connection with the guide rail 22 through the second motor. The second motor drives the first control unit 31 to slide along the guide rail 22. A third motor (not shown) is further provided on one side of the first control unit 31. The output shaft of the third motor is connected to the first connecting rod 32, and the third motor drives the first connecting rod 32 to move in the vertical direction.

[0028] It should be noted that a fourth motor (not shown) is provided in the second control unit 41. The guide rail 22 passes through the second control unit 41 and is in meshing connection with the guide rail 22 through the fourth motor. The fourth motor drives the second control unit 41 to slide along the guide rail 22. A fifth motor (not shown) is further provided on one side of the second control unit 41. The output shaft of the fifth motor is respectively connected to the first pressing rod 4211 and the second pressing rod 4221 through the third connecting rod 44. The fifth motor drives the third connecting rod 44 to drive the first pressing rod 4211 and the second pressing rod 4221 to move in the vertical direction.

[0029] Specifically, the pressing rod mechanism 42 includes a first pressing rod assembly 421 and a second pressing rod assembly 422. The first pressing rod assembly 421 and the second pressing rod assembly 422 are respectively arranged on opposite sides of the second control unit 41. The first pressing rod assembly 421 includes a first pressing rod 4211 and a first pressing block 4212. One end of the first pressing rod 4211 is connected to the second control unit 41, and the other end of the first pressing rod 4211 extends away from the second control unit 41. The first pressing block 4212 is fixedly arranged on one side of the first pressing rod 4211. The second pressing rod assembly 422 includes a second pressing rod 4221 and a second pressing block 4222. One end of the second pressing rod 4221 is connected to the second control unit 41, and the other end of the second pressing rod 4221 is fixedly provided with the second pressing block 4222. Conductive sponges (not shown) are provided at the bottoms of the first pressing block 4212 and the second pressing block 4222, and the conductive sponges are electrically connected to the LCD display screen to be measured.

[0030] Specifically, the detection link mechanism 43 includes a detection rod 431 and a detection block 432. The detection rod 431 is L-shaped. One end of the detection rod 431 is connected to the first pressing rod 4211, and the other end of the detection rod 431 is provided with the detection block 432. A conductive rubber strip (not shown) is provided on the side of the detection block 432 facing the first pressing rod 4211, and the conductive rubber strip is electrically connected to the LCD display screen to be measured.

[0031] Specifically, the detection platform component 5 is fixedly connected to the lower ends of the two support plates 21 respectively. The detection platform component 5 includes a detection platform body 51 and operation positions. The operation positions include a first operation position 52 and a second operation position 53. The first operation position 52 and the second operation position 53 are arranged on both sides of the detection platform body 51. The operation positions are used for placing the LCD display screen to be tested.

[0032] Specifically, the first operation position 52 and the second operation position 53 are arranged on both sides of the detection platform body 51. A heating block 54 is arranged on one side of the first operation position 52. The heating block 54 is used for heating and curing the silver paste on the LCD display screen to be tested.

[0033] Specifically, a first button 521, a first indicator light 522, a second button 531 and a second indicator light 532 are further arranged on the detection platform body. The first button 521 and the first indicator light 522 are adjacent to the first operation position 52. The second button 531 and the second indicator light 532 are adjacent to the second operation position 53. After the first button 521 is pressed, it indicates that the first operation position 52 sends a start signal to the control end 1. After the second button 531 is pressed, it indicates that the second operation position 53 sends a start signal to the control end 1.

[0034] Specifically, a plurality of limiting blocks 55 are arranged on the peripheries of the first operation position 52 and the second operation position 53. The limiting blocks 55 are movably connected to the detection platform body 51. The limiting blocks 55 are used for fixing the LCD display screen to be tested. A plurality of adsorption holes 523 and channels 511 are arranged at the bottoms of the first operation position 52 and the second operation position 53. The adsorption holes 523 and the channels 511 are communicated. A vacuum pump 56 is arranged on one side of the detection platform body 51. The channel 511 is communicated with one end of the vacuum pump 56 through an air pipe 57. The other end of the vacuum pump 56 is empty and communicated with the atmosphere. The vacuum pump 56 is electrically connected to the control end 1. The adsorption holes 523 are used for adsorbing the LCD display screen to be tested.

[0035] Specifically, the control end 1 includes a display panel 11 and a power switch 12. The display panel 11 is used for controlling the corresponding parameters of the dispensing component 3, the conductive detection component 4 and the heating block 54. The power switch 12 is used for controlling the power on and off of the control end.

[0036] The implementation process of the present utility model is as follows: Turn on the power switch 12 on the control terminal 1, and place the two LCD displays to be tested on the first operation position 52 and the second operation position 53 respectively. For the LCD displays to be tested with different sizes, polarizers are pasted on the middle parts of the LCD displays to be tested, and they can be fixed by changing the position of the limit block 55. The vacuum pump 56 is started, and the adsorption holes 523 generate adsorption force to relatively fix the LCD display to be tested and the detection platform body 51. Use the display panel 11 on the control terminal 1 to set the movement parameters of the first control unit 31 and the first connecting rod 32, as well as the movement parameters of the second control unit 41 and the pressing rod mechanism 42. Start the first button 521, and the dispensing assembly 3 starts to work. The first control unit 31 moves horizontally along the guide rail 22, and the first connecting rod 32 moves vertically. After the first connecting rod 32 moves to directly above the LCD display to be tested, the first connecting rod 32 descends, and the dispenser 34 starts to work. The first motor 35 drives the fixed block 37 to drive the boosting rod 342 to move, and injects silver paste into the LCD display to be tested through the injection port 343. Then the dispensing assembly 3 resets, and the heating block continuously heats to make the silver paste heat-cured. Then the conductive detection assembly 4 starts to work. The second control unit 41 moves horizontally along the guide rail 22, and the first pressing rod 4211 and the second pressing rod 4221 move vertically. After the first pressing rod 4211 and the second pressing rod 4221 are located on both sides directly above the LCD display to be tested, they descend, and the first pressing block 4212 and the second pressing block 4222 are pressed against the LCD display to be tested. Conductive sponges are provided at the bottoms of the first pressing block 4212 and the second pressing block 4222, and conductive rubber strips are provided on the detection block 432. By applying a driving voltage to the conductive sponges, it is detected whether the area where the conductive rubber strip is not pasted with the polarizer on the LCD display to be tested is conductive. When the first indicator light 522 shows a green light, the LCD display to be tested at the first operation position 52 is qualified; otherwise, the first indicator light 522 shows a red light, and the LCD display to be tested at the first operation position 52 is unqualified. After the silver paste is injected and reset at the first operation position 52, the second button 531 can be started, and the second operation position 53 performs injection of silver paste and conductive detection according to the steps of the first operation position 52 above. When the second indicator light 532 shows a green light, the LCD display to be tested at the second operation position 53 is qualified; otherwise, the second indicator light 532 shows a red light, and the LCD display to be tested at the second operation position 53 is unqualified. The whole process is simple to operate and has a low misdetection rate. The injection of silver paste and conductive detection can be carried out on the two LCD displays to be tested respectively at the same time, and cross-operation can be performed, thereby improving work efficiency.

[0037] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0038] The above-described embodiments only express the implementation manners of the present utility model, and their descriptions are relatively specific and detailed, but should not be construed as limiting the scope of the patent of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several modifications and improvements can still be made, and these all belong to the protection scope of the present utility model. Therefore, the protection scope of the patent of the present utility model should be subject to the appended claims.

Claims

1. An LCD silver paste dispensing and conduction detection device for detecting a to-be-tested LCD display screen, characterized in that: The LCD silver paste dispensing and conduction detection device includes a control end, a fixed bracket, a dispensing assembly, a conductive detection assembly, and a detection platform assembly; The fixed bracket includes two support plates and two guide rails. The two support plates are connected by the two guide rails arranged at intervals. The control end is arranged on one side of one of the support plates; The dispensing assembly and the conductive detection assembly are arranged on the fixed bracket. The dispensing assembly is arranged above the conductive detection assembly. The dispensing assembly includes a first control unit, a first connecting rod, and a dispensing head. The two ends of the first connecting rod are respectively connected to the first control unit and the dispensing head. A detachably connected dispenser is arranged on the dispensing head. The dispenser is used to inject silver paste into the LCD display screen to be tested. The conductive detection assembly includes a second control unit, a pressing rod mechanism, and a detection link mechanism. The pressing rod mechanism includes a first pressing rod assembly and a second pressing rod assembly. The first pressing rod assembly and the second pressing rod assembly are respectively arranged on opposite sides of the second control unit. The detection link mechanism is arranged at one end of the first pressing rod assembly facing away from the second control unit. The detection link mechanism and the pressing rod mechanism are used to detect the LCD display screen to be tested. The first control unit and the second control unit are respectively slidably connected to the fixed bracket through the guide rails. The first control unit and the second control unit are respectively electrically connected to the control end; The detection platform assembly is fixedly connected to the lower ends of the two support plates respectively. The detection platform assembly includes a detection platform body and an operation position. The operation position includes a first operation position and a second operation position. The operation position is arranged on the detection platform body. The operation position is used to place the LCD display screen to be tested.

2. The LCD silver paste dispensing and conduction detection device according to claim 1, characterized in that: The first pressing rod assembly includes a first pressing rod and a first pressing block. One end of the first pressing rod is connected to the second control unit. The other end of the first pressing rod extends in a direction away from the second control unit. The first pressing block is fixedly arranged on one side of the first pressing rod. The second pressing rod assembly includes a second pressing rod and a second pressing block. One end of the second pressing rod is connected to the second control unit. The other end of the second pressing rod is fixedly provided with the second pressing block. Conductive sponges are arranged at the bottoms of the first pressing block and the second pressing block. The conductive sponges are electrically connected to the LCD display screen to be tested.

3. The LCD silver paste dispensing and conduction detection device according to claim 2, wherein: The detection link mechanism includes a detection rod and a detection block. One end of the detection rod is connected to the first pressing rod. The other end of the detection rod is provided with the detection block. A conductive rubber strip is arranged on one side of the detection block facing the first pressing rod. The conductive rubber strip is electrically connected to the LCD display screen to be tested.

4. The LCD silver paste dispensing and conduction detection device according to claim 1, wherein: The first operation position and the second operation position are arranged on both sides of the detection platform body. Heating blocks are respectively arranged on one side of the first operation position and the second operation position. The heating blocks are used to heat and cure the silver paste on the LCD display screen to be tested.

5. The LCD silver paste dispensing and conduction detection device according to claim 4, characterized in that: On the detection platform body, there are also a first button, a first indicator light, a second button and a second indicator light. The first button and the first indicator light are adjacent to the first operation position, and the second button and the second indicator light are adjacent to the second operation position. After the first button is pressed, it means that the first operation position sends a start signal to the control end. After the second button is pressed, it means that the second operation position sends a start signal to the control end.

6. The LCD silver paste dispensing and conduction detection device according to claim 5, characterized in that: There are several limiting blocks respectively arranged on the peripheries of the first operation position and the second operation position. The limiting blocks are movably connected to the detection platform body and are used to fix the LCD display screen to be tested. There are several adsorption holes and channels arranged at the bottom of the operation position. The adsorption holes and the channels are communicated. A vacuum pump is arranged on one side of the detection platform body. The channel is communicated with one end of the vacuum pump through an air pipe. The vacuum pump is electrically connected to the control end. The adsorption holes are used to adsorb the LCD display screen to be tested.

7. The LCD silver paste dispensing and conduction detection device according to claim 4, wherein: The control end includes a control end body, a display panel and a power switch. The display panel is arranged at one end of the control end body. The power switch is arranged adjacent to the display panel. The display panel is used to set the corresponding parameters of the dispensing component, the conductive detection component and the heating block. The power switch is used to control the on / off of the power supply of the control end.

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