TWI572857B - LCD screen color anomaly test fixture - Google Patents

Description

LCD screen color abnormality inspection fixture

The invention relates to a test fixture, in particular to a liquid crystal panel color display abnormality inspection fixture capable of bending a liquid crystal panel and facilitating detection of flaws.

According to the LCD panel manufacturing and delivery to the assembly equipment factory in the middle and lower reaches, LCD panel manufacturers will first test the yield, but in the process of handling and transportation, they will often be subjected to vibration and repeated disassembly and assembly. When the liquid crystal panel is delivered to the middle and downstream manufacturers, the actual product yield is degraded. Therefore, the middle and lower reaches still have to check whether the liquid crystal panel is flawed. At present, the production lines of related manufacturers are all manually detected, that is, using a reflective or transmissive light source to allow the operator's eyes to visually detect product defects and contaminants, but such manual detection methods are often caused by long-term repeatability of the inspectors. The detection causes fatigue, lack of energy, emotions and many other human factors, which affects the detection efficiency; in addition, the artificial inevitability is subjective in judgment, and also has its limits in measurement accuracy, which makes the detection quality affected.

In view of the above needs, the inventors have carefully studied and accumulated many years of experience in the business, and finally designed a brand-new LCD screen color abnormality inspection tool.

An object of the present invention is to provide a liquid crystal panel that can be bent to facilitate Detecting the LCD screen color abnormality inspection fixture.

In order to achieve the above object, the liquid crystal display color abnormality inspection fixture of the present invention comprises: a base having a plurality of positioning columns on a surface thereof; a spanning on the surface of the base and having a first window therein for the positioning pillars Passing through the carrier plate, the peripheral surface of the carrier plate is provided with a plurality of positioning blocks; a bottom portion is provided with a plurality of positioning sleeves and sleeved on the fixture plates of the positioning posts of the base; a spanning around the base The pressing fixture comprises a push rod, a pressure plate connected to the push rod, and a second window facing the first window.

Thereby, a preset liquid crystal panel is placed on the carrier, and the periphery of the liquid crystal panel is fixed by the positioning blocks, and the bottom of the liquid crystal panel is carried on the surface of the fixture board, and then the push rod action is driven. The pressure plate is pressed down on the carrier plate, and the inner edge of the first window of the carrier plate and the inner edge of the second window of the pressure plate simultaneously clamp the liquid crystal panel, and the action of pressing down is generated. The liquid crystal panel is bent in the first window and the bottom of the liquid crystal panel is loaded to generate a resistance, so that the liquid crystal panel is bent, and the liquid crystal panel in a curved state is more favorable for detecting the flaw.

In a preferred embodiment of the present invention, the second window is slightly larger than the first window, so that the inner edge of the second window is directly on the positioning block.

In a preferred embodiment of the present invention, the positioning sleeves of the fixture plate are elastic and may be rubber rings or springs.

In a preferred embodiment of the present invention, a plurality of elastic columns are disposed around the carrier plate, so that the pusher plate drives the pressure plate to press the carrier plate and pull back, the carrier plate returns to the original with the elastic columns. Height; and the elastic columns are springs or rubber columns.

In a preferred embodiment of the present invention, the surface of the base is provided with a plurality of fixed surfaces The fixing holes are arranged at the bottom of the positioning posts, and the positioning posts are inserted into the fixing holes by the fixing blocks.

In a preferred embodiment of the present invention, the push rod of the pressing tool is a motor, a pneumatic cylinder, a hydraulic cylinder or a manual linkage to generate a depression.

10‧‧‧ Pedestal

11‧‧‧Positioning column

111‧‧‧Fixed block

12‧‧‧Fixed holes

20‧‧‧ Carrier Board

21‧‧‧ first window

22‧‧‧ Positioning block

23‧‧‧Elastic column

30‧‧‧ fixture board

31‧‧‧ Positioning sleeve

40‧‧‧Under pressure fixture

41‧‧‧Put

42‧‧‧ pressure plate

43‧‧‧ second window

50‧‧‧LCD panel

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a perspective view of a preferred embodiment of the present invention.

Figure 2 is a perspective exploded view of a preferred embodiment of the present invention.

Figure 3 is a schematic view of the operation of the preferred embodiment of the present invention.

Figure 4 is a second schematic view of the operation of the preferred embodiment of the present invention.

Figure 5 is a third schematic view of the operation of the preferred embodiment of the present invention.

Figure 6 is a perspective exploded view of a base of another embodiment of the present invention.

In order for your review board to have a clear understanding of the contents of the present invention, please refer to the following description. Please refer to FIG. 1 to FIG. 2 , which are perspective views and exploded views of the present invention. The present invention includes: a base 10 , a carrier 20 , a fixture plate 30 and a lower pressing fixture 40 . among them:

A plurality of positioning posts 11 are disposed on the surface of the base 10.

The carrier 20 is disposed on the surface of the base 10 and has a first window 21 therein. A plurality of positioning blocks 22 are disposed on the peripheral surface of the carrier 2, and the positioning posts 11 on the surface of the base 10 The first window 21 of the carrier 2 is provided. In addition, a plurality of elastic columns 23 are respectively disposed around the periphery of the carrier 20, and the elastic columns 23 can be springs or rubber columns, and the carrier 23 is spanned. On the base 10 surface.

The bottom of the fixture plate 30 is provided with a plurality of positioning sleeves 31, and the positioning sleeves 31 are respectively sleeved on the positioning posts 11, so that the height of the bottom surface of the fixture plate 30 (the so-called bottom surface, that is, the fixture plate) 3) The surface provided with the positioning sleeves 31 is at least higher than or equal to the height of the top surface of the carrier 20 (the so-called top surface, that is, the surface of the carrier 2 on which the positioning blocks 22 are disposed); The positioning sleeves 31 are elastic, and may be rubber rings or springs. Therefore, the bottom surface of the fixture plate 30 does not directly contact the positioning posts 11 of the base 10, that is, the bottom surface of the fixture plate 30 and There is a spacing between the positioning posts 11.

The lower pressing fixture 40 is a straddle mechanism spanning the periphery of the base 1, such as a gantry structure. The lower pressing fixture 40 is provided with a push rod 41. A pressing plate 42 is connected below the pushing rod 41. In order to have a second window 43, the second window 43 is opposite to the first window 21 of the carrier 2, and the second window 43 is slightly larger than the first window 21, so that the second window 43 has an inner edge. For the positioning block 22 of the carrier 2; and the push rod 41 is a motor, a pneumatic cylinder, a hydraulic cylinder or a manual manner, the pressure plate 42 is driven to generate a reciprocating displacement and generate a pre-applied pressure.

When a predetermined liquid crystal panel 50 is to be tested, please refer to FIG. 3, which is a schematic diagram of the operation of the present invention. First, the liquid crystal panel 50 is placed on the surface of the carrier 2, and the liquid crystal is placed. The periphery of the panel 50 is defined between the positioning blocks 22, and at the same time, the fixture board 30 is the first window 21 that passes through the carrier board 2. Therefore, the bottom of the liquid crystal panel 50 will Covering the top surface of the jig 30 (relative to the bottom surface of the jig 30 described above, the other surface is the top surface); and then, as shown in FIG. 4, it is the action of the present invention. In the second embodiment, the action of the push rod 41 of the lower press fixture 40 causes the pressure plate 42 to move downward. It should be noted that the downward movement is performed by the base 1 . The surface of 11 is the reference point, then The push rod 41 drives the pressure plate 42 to move toward the surface of the base 10, and therefore, the pressure plate 42 moves downward relative to the surface of the base 1; when the pressure plate 42 continues to move and covers the carrier 2 a surface (as the surface of the carrier 2 as defined above), since the second window 43 of the platen 42 is slightly larger than the first window 21 of the carrier 20, and the inner edge of the second window 43 is The top surface of the liquid crystal panel 50 is attached to the bottom surface of the pressure plate 42. The bottom surface of the liquid crystal panel 50 is attached to the surface of the carrier 20, and the liquid crystal The side faces of the panel 50 (the so-called side faces, which are the faces of the liquid crystal panel 50 perpendicular to the bottom face and the bottom face, respectively) are defined between the positioning blocks 22 of the carrier 20 .

Please refer to FIG. 5 , which is a schematic diagram 3 of the operation of the present invention. Since the periphery of the carrier 20 is respectively provided with a plurality of elastic columns 23 , the push rod 41 of the lower pressing fixture 40 can be driven. The pressing plate 42 pushes the carrier plate 20 downward to attach the bottom surface of the carrier plate 20 to the surface of the base 10, or reduces the distance between the bottom surface of the carrier plate 20 and the surface of the base plate 1. At this time, the liquid crystal The periphery of the panel 50 (described above) is pressed by the pressing plate 42 and the bottom surface of the liquid crystal panel 50 is subjected to the resistance of the jig plate 3, so that the liquid crystal panel 50 is bent. It should be noted that the present invention is called The liquid crystal panel 50 is bent, which refers to the deformation generated when the liquid crystal panel 50 is subjected to the force, but the magnitude of the bending and the amount of the downward pressure of the pressing plate 42 are still within the safety value of the liquid crystal panel 50, that is, the liquid crystal panel 50. Depending on the characteristics of the material, such as tempered glass, tempered glass, acrylic, etc., and the layered structure at the time of production, there will be a certain bending deformation strength. For example, the safety force of the liquid crystal panel 50 when bending is 1 kg. , the pusher 4 of the pressing fixture 4 The force generated by the driving plate 42 downwardly must be less than 1 kg to ensure that the liquid crystal panel 50 is not broken due to excessive bending.

Furthermore, as described above, the bottom surface of the jig plate 30 and the positioning posts 11 have The spacing, therefore, in the above process, the positioning sleeves 31 on the bottom surface of the fixture plate 30 can buffer the pressure of the liquid crystal panel 50 from the pressure plate 42 while dispersing the pressure to further prevent the liquid crystal panel 50 from being broken. When the push rod 41 of the lower pressing fixture 40 drives the pressing plate 42 to move upward (compared to the downward movement, that is, the reverse direction), when the pressing plate 42 is separated from the carrier 20, the carrier 20 is The elastic columns 23 are released from the periphery to release the bottom surface of the carrier 20 from the state of being attached to the surface of the substrate 10 to a separated state, or the spacing between the bottom surface of the carrier 20 and the surface of the substrate 10 is restored to an untested state. State (the state of the so-called bit test, that is, the state in which the bottom surface of the platen 42 has not been attached or pressed against the carrier 20), and at the same time, the positioning sleeves 31 at the bottom of the fixture plate 30 are elasticated and capable of The liquid crystal panel 50 is quickly restored to a state that has not been bent.

Please refer to FIG. 6 , which is a perspective exploded view of the base of another embodiment. The difference between the first and fifth figures is that the surface of the base 10 is provided with a plurality of fixing holes 12 . And the positioning block 11 is respectively provided with a fixing block 111 at the bottom, and the positioning column 11 can be replaced with different positions according to the actual use requirements, and the liquid crystal panel 50 can be made according to actual needs according to different positions. , change the position of the bend, the magnitude of the bend, and so on.

The above description is only the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention; any changes and modifications made by those skilled in the art without departing from the spirit and scope of the invention All should be covered by the patent of the present invention.

In summary, the liquid crystal screen color abnormality inspection jig of the present invention has the novelty and progress of the patent, and the use value of the industry; the applicant filed an invention patent with the shackle according to the provisions of the patent law. Application.

10‧‧‧ Pedestal

11‧‧‧Positioning column

20‧‧‧ Carrier Board

21‧‧‧ first window

22‧‧‧ Positioning block

23‧‧‧Elastic column

30‧‧‧ fixture board

31‧‧‧ Positioning sleeve

40‧‧‧Under pressure fixture

41‧‧‧Put

42‧‧‧ pressure plate

43‧‧‧ second window

Claims (7)

A liquid crystal screen chromogenic anomaly inspection jig includes: a pedestal having a plurality of positioning posts on a surface thereof; a carrier plate spanning the surface of the pedestal, having a first window therein for the positioning The column passes through and has a plurality of positioning blocks on the peripheral surface; a fixture plate has a plurality of positioning sleeves at the bottom thereof, and the positioning sleeves are respectively sleeved on the positioning posts; Arranging on the periphery of the base, the utility model is provided with a push rod, and a press plate is connected under the push rod, and the press plate has a second window facing the first window; thereby, a preset liquid crystal panel is placed And being fixed on the carrier plate and being carried on the surface of the fixture plate, the push rod drives the pressure plate to be pressed down, so that the periphery of the preset liquid crystal panel is pressed by the carrier plate and The jig plate is held upward to cause the preset liquid crystal panel to bend. The liquid crystal screen color abnormality inspection jig according to claim 1, wherein the second window is slightly larger than the first window, so that the inner edge of the second window is positive for the positioning blocks. The liquid crystal screen color abnormality inspection jig according to claim 1, wherein the positioning sleeve of the jig plate is elastic, and may be a rubber ring or a spring. The liquid crystal display color abnormality inspection jig according to claim 1, wherein a plurality of elastic columns are arranged around the carrier plate, so that the push bar drives the pressure plate to press the carrier plate and pull back, the load The plates are returned to their original height with the elastic columns. For example, the liquid crystal screen color abnormality inspection tool described in claim 4, wherein the elastic columns are springs or rubber columns. The liquid crystal screen color abnormality inspection tool according to claim 1, wherein the surface of the base is provided with a plurality of fixing holes, and the bottom of the positioning columns is provided with a fixing block, and the positioning columns are fixed by the fixing. The blocks are inserted into the fixing holes. The liquid crystal screen color abnormality inspection jig according to claim 1, wherein the push rod of the pressing tool is a motor, a pneumatic cylinder, a hydraulic cylinder or a manual linkage to generate a depression.