TWI649556B - Testing equipment - Google Patents

Abstract

The inspection equipment includes a working platform, a movable arm, a pressing member and an elastic element. The pressing member is connected to the movable arm and presses on the working platform. The elastic element connects the working platform with the movable arm to provide a pressing force for the movable arm.

Description

Testing equipment

The invention relates to an inspection device, and more particularly to an inspection device for an optical film.

The traditional way of inspecting optical diaphragms is that the inspector holds the optical diaphragm with his hand toward the light source, and simultaneously inspects the optical diaphragm with his eyes. However, the hand shake is large and the stability is not good, which makes it impossible for the eyes to clearly identify defects, especially small defects. Therefore, it is one of the efforts of those skilled in the art to propose a new technique for inspecting optical films.

Therefore, the present invention proposes an inspection device that can improve the aforementioned conventional problems.

According to an embodiment of the present invention, an inspection device is provided. The inspection equipment includes a working platform, a movable arm, a pressing member, and a first elastic element. The pressing member is connected to the movable arm and presses on the working platform. The first elastic element connects the working platform with the movable arm to provide a pressing force for the movable arm.

In order to have a better understanding of the above and other aspects of the present invention, the following specific examples are described in detail below in conjunction with the accompanying drawings:

Please refer to FIGS. 1A to 1B. FIG. 1A shows a schematic diagram of the inspection device 100 of the optical film 10 according to an embodiment of the present invention, and FIG. 1B shows the pressing mechanism 120 of the inspection device 100 of FIG. 1A. schematic diagram.

The inspection device 100 includes a work platform 110, a top 115, a pressing mechanism 120, a light emitting element 130, and at least one stop 140. The pressing mechanism 120 is disposed on the working surface 110 u of the working platform 110. The pressing mechanism 120 can press the optical film 10 on the work platform 110. For example, when the optical film 10 is to be inspected, the optical film 10 may be inserted between the pressing mechanism 120 and the working surface 110u of the working platform 110, so that the pressing mechanism 120 presses the optical film 10 against the working platform. The working surface 110u of 110 is convenient for an inspector to check the quality of the optical film 10. The optical film 10 is, for example, a polarizing film, a brightness enhancement film, a light expansion film, or other film structures having optical characteristics. The optical film 10 here is, for example, an optical film that can be used in a display device or a light-emitting device.

The light emitting element 130 is disposed above the pressing mechanism 120. For example, the light emitting element 130 is disposed on the top 115. The top 115 is connected to the work platform 110 and is located above the work platform 110. In this way, the light-emitting element 130 can illuminate the optical film 10 downward, so that defects (if any) of the optical film 10 are displayed by the light L1, so that the inspector can more easily determine whether the optical film 10 has the defect. Since the pressing mechanism 120 can firmly press the optical film 10 on the working surface 110u, the operator can focus on the optical film 10 without having to worry about whether the optical film 10 will be separated from the working platform 110. In another embodiment, the light emitting element 130 may also be disposed in the work platform 110, for example, under the work surface 110u.

In addition, the work platform 110 further has a bottom surface 110b. The inspection apparatus 100 is placed on a carrier C1 with a bottom surface 110b, and the carrier C1 is, for example, a floor or a floor. Since the pressing mechanism 120 can press the optical film 10 on the working surface 110u, even if the working surface 110u is inclined with respect to the bottom surface 110b, the optical film 10 will not easily fall from the working surface 110u. The inclined working surface 110 u can reduce the width W1 of the inspection apparatus 100.

There is an included angle A1 between the working surface 110u and the bottom surface 110b. In one embodiment, the working surface 110u and the bottom surface 110b may be perpendicular to each other, that is, the included angle A1 is substantially 90 degrees. Alternatively, the working surface 110u and the bottom surface 110b may be parallel to each other, that is, the included angle A1 is substantially 0 degrees. In other words, the angle A1 between the working surface 110u and the bottom surface 110b is, for example, between about 0 degrees and about 90 degrees, and preferably between about 30 degrees and about 50 degrees.

As shown in FIG. 1B, the pressing mechanism 120 includes a movable arm 121, a pressing member 122, a first elastic member 123, a second elastic member 124, a first holder 125, and a second holder 126. The first elastic element 123 is, for example, a torsion spring, which connects the movable arm 121 and the work platform 110 to provide a pressing force F of the movable arm 121 against the working platform 110 (the pressing force F is shown in FIG. 1A). Similarly, the second elastic element 124 is, for example, a torsion spring, which connects the movable arm 121 to the work platform 110, and can also provide a pressing force F of the movable arm 121 against the work platform 110. In addition, the first elastic element 123 and the second elastic element 124 can be held in the first holder 125 and the second holder 126, respectively, to stabilize the deformation condition of the elastic element. In one embodiment, the pressing force F can be adjusted according to the actual needs through the selection and matching of the first elastic element 123 and the second elastic element 124 to stably press the optical film 10 on the work platform 110. In addition, by appropriately designing the elastic coefficient of the first elastic element 123 and the elastic coefficient of the second elastic element 124, an appropriate or expected abutting force F can be obtained.

In one embodiment, the first elastic element 123 can connect the movable arm 121 and the first holder 125, and the second elastic element 124 can connect the movable arm 121 and the second holder 126. In this way, after the first holder 125 and the second holder 126 are moved away from the work platform 110, the entire pressing mechanism 120 can be separated from the work platform 110. In one embodiment, the first holder 125 can be temporarily fixed on the working surface 110u through at least one threaded element 127, and the second holder 126 can be temporarily fixed on the working surface 110u through at least one threaded element 128. Alternatively, the first holding member 125 and / or the second holding member 126 may be engaged on the working surface 110u. Under this design, the threaded elements 127 and / or 128 may be selectively omitted. In other embodiments, the first holder 125 and the second holder 126 may be temporarily fixed on the working surface 110u by magnetic force. In another embodiment, if there is no need, the pressing mechanism 120 may omit the first holder 125 and / or the second holder 126. With the above design, the pressing mechanism 120 can move the installation position and / or quantity as required.

The pressing member 122 is connected to the movable arm 121 and pressed against the working platform 110. In this way, when the optical film 10 enters between the pressing member 122 and the working surface 110u, the aforementioned pressing force F is transmitted to the pressing member 122, so that the pressing member 122 presses the optical film 10 on the working surface 110u, and further It is convenient for an operator to observe the optical film 10. In addition, since the first elastic element 123 and the second elastic element 124 continuously provide a pressing force F of the movable arm 121, the pressing member 122 continuously presses the optical film 10 on the working surface 110u. In one embodiment, when there is no optical film 10 between the pressing member 122 and the working surface 110u, the pressing member 122 still contacts the working surface 110u. In this way, there is no need to worry about the thickness of the optical film 10, even if the thin optical film 10 enters between the pressing member 122 and the working surface 110u, the pressing member 122 can press the working surface 110u. on.

As shown in FIG. 1B, the movable arm 121 has a U-shaped structure. For example, the movable arm 121 includes a first arm 1211, a second arm 1212, and a third arm 1213. The second arm 1212 connects the first arm 1211 and the third arm 1213, and the first arm 1211 is opposed to the third arm 1213, so that the movable arm 121 has a U-shaped structure.

In detail, the first arm 1211 includes a first end 1211a and a second end 1211b. The first end 1211a is connected to the first elastic element 123. The second arm 1212 includes a first end 1212a and a second end 1212b. The first end 1212a of the second arm 1212 is connected to the second end 1211b of the first arm 1211. The second arm 1212 extends along the central axis S1 of the pressing member 122. The third arm 1213 includes a first end 1213a and a second end 1213b. The first end 1213a is connected to the second elastic element 124. The second end 1212b of the second arm 1212 is connected to the second end 1213b of the third arm 1213.

As shown in FIG. 1B, the first arm 1211 further includes a connecting portion 1211c, which connects the first end 1211a and the second end 1211b. The first end 1211a is at an angle A2 with the connecting portion 1211c, so that the first end 1211a can be connected to the first elastic element 123 at an appropriate angle. The angle A2 is, for example, 90 degrees. Similarly, the third arm 1213 further includes a connecting portion 1213c, which connects the first end 1213a and the second end 1213b. The first end 1213a is at an angle A3 with the connecting portion 1213c, so that the first end 1213a can be connected to the second elastic element 124 at an appropriate angle. The angle A3 is, for example, 90 degrees. In one embodiment, the first arm 1211 and / or the third arm 1213 are made of rods by a bending method. Alternatively, the movable arm 121 is a one-piece structure. For example, a rod can be formed into a first arm 1211, a second arm 1212, and a third arm 1213 by a bending method.

The pressing member 122 includes a pressing wheel 1221, a first connecting shaft 1222, and a second connecting shaft 1223. The pressure wheel 1221 is, for example, a cylindrical wheel or a ball wheel. The embodiment of the present invention is described by using a cylindrical wheel as an example. The pressing wheel 1221 has a first end surface 1221a and a second end surface 1221b opposite to each other. The first connecting shaft 1222 projects outward from the center of the first end surface 1221a of the pressure wheel 1221 and is connected to the connecting portion 1211c of the first arm 1211. In this embodiment, the first connecting shaft 1222 includes a first end 1222a and a second end 1222b. The first end 1222a is connected to the first end surface 1221a of the pressure roller 1221, and the second end 1222b can be connected to the movable arm 121. For example, the first end 1222a of the first connecting shaft 1222 may be fixed or pivotally connected to the first end surface 1221a of the pressing wheel 1221.

Similarly, the second connecting shaft 1223 projects outward from the center of the second end surface 1221 b of the pressure wheel 1221 and is connected to the third arm 1213. The second connecting shaft 1223 has a structure similar to or the same as that of the first connecting shaft 1222, and details are not described herein again. In an embodiment, the first connection shaft 1222 and the second connection shaft 1223 may be connected to each other. For example, the first connecting shaft 1222 and the second connecting shaft 1223 may form an integrated structure.

In an embodiment, the first connecting shaft 1222 and the second connecting shaft 1223 can be pivotally connected to the pressing wheel 1221, so that the pressing wheel 1221 can rotate relative to the first connecting shaft 1222 and the second connecting shaft 1223. In this way, when the optical film 10 enters the pressing wheel 1221 and the working surface 110u, the pressing wheel 1221 rotates to reduce the entry resistance (friction) of the optical film 10. In addition, the material of the pressing wheel 1221 includes rubber, plastic, or a soft material (such as wool or cloth), which can avoid compressing the optical film 10.

In addition, the second end 1222b of the first connecting shaft 1222 has an annular structure 1222c, and the first arm 1211 can pass through the annular structure 1222c. The ring structure 1222c is loosely fitted with the first arm 1211, and the two have a proper clearance. In this way, when the optical film 10 enters the pressure roller 1221 and the working surface 110u, when the optical film 10 pushes the pressure roller 1221, the pressure roller 1221 can appropriately adjust its position (for example, the amount of displacement through the gap), thereby reducing Entry resistance of the optical film 10.

In addition, the ring structure 1222c is a closed ring type, which can prevent the first arm 1211 from being separated from the ring structure 1222c. In this way, when the optical film 10 enters the pressing wheel 1221 and the working surface 110u, when the optical film 10 pushes the pressing wheel 1221, the ring structure 1222c is resisted by the first arm 1211, so that the pressing member 122 is not prevented by the optical film The sheet 10 is pushed too far. In this way, the position of the pressing member 122 can be stabilized.

As shown in FIG. 1A, the stopper 140 is disposed on and protrudes from the working surface 110 u of the work platform 110 and is adjacent to the pressing member 122 to stop the optical film 10. In this way, when the optical diaphragm 10 enters between the pressing member 122 and the working surface 110u, the inspector does not need to worry about the depth of the optical diaphragm 10, as long as the optical diaphragm 10 is stopped by the stopper 140, it can start Check it out. In addition, as shown in the figure, the stopper 140 is located between the pressure wheel 1221 and the first end 1211a of the first arm 1211, so that the optical film 10 passes through the pressure wheel 1221 and is stopped by the stopper 140. In addition, the stopper 140 may be located in a projection area range R1 perpendicularly projected from the central axis S1 of the pressure wheel 1221 and the peripheral surface 1221s to the working surface 110u. In this way, compared with the stopper 140 located outside the projection area range R1, when the stopper 140 is located within the projection area range R1, the optical film 10 can expose a larger observable area, where the observable area refers to the The area covered by the pressing mechanism 120 (that is, the optical film 10 is located in the area to the left of the pressing wheel 1221 in FIG. 1A). In another embodiment, the stopper 140 is located between the pressing wheel 1221 and the first end 1211a of the first arm 1211, but may be located outside the projection area range R1. In addition, the plurality of stopping portions 140 may be arranged along a straight line, where the straight line is, for example, substantially parallel to the central axis S1 (shown in FIG. 1B). However, depending on the requirements, the straight line can be at an acute angle, a right angle, or an obtuse angle with the central axis S1. Alternatively, the stopping portions 140 may be arranged along a curve.

As shown in FIG. 1B, the inspection device 100 further includes at least one stopper 150, which can stop the pressing member 121, such as the first connecting shaft 1222 of the pressing member 121, to prevent the pressing member 121 from moving away from the first One end 1211a slides in the direction.

As shown in FIG. 1B, the stopper 150 includes an adjustment portion 151 and a second fixing portion 152. The adjusting portion 151 is disposed on the movable arm 121 and has a first fixing portion 151 a and a through hole 151 h. The first fixing portion 151 a extends from an outer side surface of the adjusting portion 151 to the through hole 151 h. The second fixing portion 152 fixes the stopper 150 on the movable arm 121 through the first fixing portion 151a. In this embodiment, the first fixing portion 151a is, for example, a screw hole, and the second fixing portion 152 is, for example, a threaded element, such as a bolt. The bolt can pass through the screw hole and press against the movable arm 121 to fix the relative position of the adjusting portion 151 and the movable arm 121. In this way, the fixed adjustment portion 151 can block the pressing member 121 and prevent the pressing member 121 from sliding in a direction away from the first end 1211a.

The position of the adjusting portion 151 on the movable arm 121 is adjustable. In detail, the movable arm 121 can pass through the through hole 151h, and the adjusting portion 151 can slide relative to the movable arm 121. In this way, the position of the adjusting portion 151 on the movable arm 121 can be adjusted.

Since the position of the stopper 150 on the movable arm 121 is adjustable, the pressing force F provided by the pressing member 121 to the optical film 10 can also be adjusted. When the position of the pressing member 121 relative to the first end 1211a is closer, the pressing member 121 provides a larger pressing force F to the optical film 10; otherwise, it is smaller.

In this embodiment, one stopper 150 is disposed on the first arm 1211 of the movable arm 121. In another embodiment, two stoppers 150 may be respectively disposed on the first arm 1211 and the third arm 1213 of the movable arm 121 to stop the first connecting shaft 1222 and the second connecting shaft of the pressing member 121 respectively. 1223. In other embodiments, the inspection device 100 may also omit the stopper 150.

In addition, in other embodiments, the inspection apparatus 200 or 400 may further include at least one stopper 150 configured on a movable arm of the inspection apparatus. The relative configuration relationship between the stopper 150 and the movable arm in this other embodiment is similar to or the same as the relative configuration relationship between the stopper 150 and the movable arm 121 described above, and details are not described herein again.

Please refer to FIG. 2, which illustrates a schematic diagram of an inspection device 200 according to another embodiment of the present invention. The inspection equipment 200 includes a working platform 110, a top 115 (not shown), a plurality of pressing mechanisms 120, a light emitting element 130 (not shown), and at least one stop 140 (not shown). Compared with the inspection device 100, the number of the pressing mechanisms 120 of the inspection device 200 is multiple, and they can be pressed against the large-sized optical film 10 at the same time. The number of the pressing mechanisms 120 can be determined according to the optical film 10, which is not limited in the embodiment of the present invention. As mentioned above, the pressing mechanism 120 can be detachably mounted on the work platform 110. Depending on the size of the optical film 10, an appropriate number of the pressing mechanisms 120 are installed on the work platform 110.

Please refer to FIG. 3, which illustrates a schematic diagram of an inspection device 300 according to another embodiment of the present invention. The inspection equipment 300 includes a working platform 110, a top 115 (not shown), at least one pressing mechanism 320, a light emitting element 130 (not shown), and at least one stop 140 (not shown). The pressing mechanism 320 includes a movable arm 121, a pressing member 322, a first elastic element 123, a second elastic element 124, a first holder 125, and a second holder 126. Compared with the aforementioned pressing member 122, the pressing member 322 in this embodiment may omit the first connecting shaft 1222 and the second connecting shaft 1223, but retain the pressing wheel 1221. The pressing wheel 1221 has a through hole 1221h to allow the second arm 1212 of the movable arm 121 to pass through. In addition, the second arm 1212 and the through hole 1221h can be tightly fitted or loosely fitted.

Please refer to FIG. 4, which illustrates a schematic diagram of an inspection device 400 according to another embodiment of the present invention. The inspection equipment 400 includes a working platform 110, a top 115 (not shown), at least one pressing mechanism 420, a light emitting element 130 (not shown), and at least one stop 140 (not shown). The pressing mechanism 420 includes a movable arm 421, a pressing member 422, a first elastic element 123, and a first holding member 125. Compared with the aforementioned pressing member 122, the pressing member 422 in this embodiment may omit the second connecting shaft 1223, but retain the pressing wheel 1221 and the first connecting shaft 1222. Compared to the aforementioned movable arm 121, the movable arm 421 of this embodiment omits the third arm 1213, but retains the first arm 1211 and the second arm 1212. The second arm 1212 may extend to overlap the peripheral surface 1221s of the pressure roller 1221 to prevent the pressure roller 1221 from detaching from the movable arm 421.

In another embodiment, the pressing member 422 may omit the first connecting shaft 1222, and the first arm 1211 of the movable arm 421 penetrates into the through hole 1221 h. Under this design, the first arm 1211 fits closely with the through hole 1221h to prevent the movable arm 421 from being separated from the pressure wheel 1221.

In summary, although the present invention has been disclosed as above with the embodiments, it is not intended to limit the present invention. Those with ordinary knowledge in the technical field to which the present invention pertains can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be determined by the scope of the attached patent application.

10‧‧‧ Optical diaphragm

100, 200, 300, 400‧‧‧ Inspection equipment

115‧‧‧Top

110‧‧‧Working Platform

110u‧‧‧Working surface

110b‧‧‧ underside

120, 320, 420‧‧‧Pressure mechanism

121, 421‧‧‧ movable arm

1211‧‧‧First Arm

1211a, 1212a, 1213a, 1222a‧‧‧ first end

1211b, 1212b, 1213b, 1222b‧‧‧ Second end

1211c, 1213c‧‧‧ Connection

1212‧‧‧ Second Arm

1213‧‧‧ Third Arm

122, 322, 422

1221‧‧‧Press roller

1221a‧‧‧first end face

1221b‧‧‧Second end face

1221h‧‧‧through hole

1221s‧‧‧ weekly

1222‧‧‧First connecting shaft

1222c‧‧‧Ring Structure

1223‧‧‧Second connecting shaft

123‧‧‧first elastic element

124‧‧‧Second elastic element

125‧‧‧First holder

126‧‧‧Second retainer

127, 128‧‧‧ threaded elements

130‧‧‧Light-emitting element

140‧‧‧stop

150‧‧‧stop

151‧‧‧Adjustment Department

151a‧‧‧First fixed part

151h‧‧‧Through Hole

152‧‧‧Second Fixing Section

A1, A2, A3 ‧‧‧ angle

F‧‧‧Absolute pressure

L1‧‧‧light

S1‧‧‧Center axis

R1‧‧‧ projection area range

W1‧‧‧Width

FIG. 1A is a schematic diagram of an inspection device for an optical film according to an embodiment of the present invention. FIG. 1B is a schematic diagram of a pressing mechanism of the inspection device of FIG. 1A. FIG. 2 is a schematic diagram of an inspection device according to another embodiment of the present invention. FIG. 3 is a schematic diagram of an inspection device according to another embodiment of the present invention. FIG. 4 is a schematic diagram of an inspection device according to another embodiment of the present invention.

Claims (15)

An inspection device for an optical diaphragm includes: a working platform; a movable arm; a pressing member connected to the movable arm and pressed against the working platform; and a first elastic element connecting the working platform and the A movable arm is provided to provide an abutting pressure for the movable arm; a stopper is arranged on the movable arm to stop the abutting element. The inspection device according to item 1 of the patent application scope, wherein the movable arm includes: a first arm connected to the first elastic element; and a second arm connected to the first arm and along the pressing member Extending in the direction of the rotating shaft; wherein the pressing member is connected to the first arm. The inspection device according to item 1 of the scope of patent application, wherein the pressing member includes: a pressing wheel having a first end surface; a first connecting shaft protruding outward relative to the center of the first end surface of the pressing wheel and Connected to the movable arm. The inspection device according to item 3 of the scope of patent application, wherein the first connecting shaft is rotatably pivotally connected to the pressure roller. The inspection device according to item 3 of the scope of patent application, wherein the first connecting shaft is fixed relative to the pressure train. The inspection device according to item 3 of the scope of patent application, wherein the first connecting shaft has a first end and a second end, the first end is connected to the first end surface, and the second end has a ring structure The movable arm passes through the ring structure. The inspection device according to item 2 of the scope of patent application, wherein the movable arm further includes: a second elastic element; and a third arm connecting the second elastic element and the second arm. The inspection equipment according to item 1 of the scope of patent application, wherein the pressing member is a rubber wheel. The inspection equipment according to item 1 of the scope of patent application, further includes: a stopper portion disposed on the working platform and adjacent to the pressing member. The inspection equipment according to item 8 of the scope of patent application, wherein the pressing wheel has a central axial direction and a peripheral surface, and the stopper is located on the working surface of the working platform perpendicularly projected from the central axial direction to the peripheral surface. Within the projection area. The inspection device according to item 1 of the scope of patent application, wherein the pressing member, the movable arm and the first elastic element constitute a pressing mechanism, and the testing device includes a plurality of the pressing mechanisms. The inspection equipment according to item 1 of the scope of patent application, wherein the pressing member is continuously pressed on the working platform. The inspection equipment according to item 1 of the scope of patent application, further includes: a holder configured on the working platform; wherein the first elastic element connects the movable arm with the holder. The inspection device according to item 13 of the scope of patent application, wherein the holder is detachably arranged on the work platform. The inspection device according to item 1 of the scope of patent application, wherein the stopper includes: an adjustment portion disposed on the movable arm and having a first fixing portion; and a second fixing portion through the first fixing The fixing part is fixed on the movable arm.