KR101259415B1 - A jig for property measurement of flexible display panel - Google Patents

Abstract

A jig apparatus for measuring flexible display characteristics is disclosed. Jig device according to an embodiment of the present invention, the base; A rotating stage rotatably mounted on the base via a rotation angle adjusting device; A movable block mounted on the rotation stage, the movable block being movable in two X- and Y-axis directions on the rotation stage; And a pair of parallel fixed shafts and movable shafts respectively installed at the center of the rotating stage and one side of the movable block, the holder having a holder for fixing the flexible display to be measured.

Description

Jig device for measuring the properties of flexible displays {A jig for property measurement of flexible display panel}

The present invention relates to a jig device for measuring the characteristics of a flexible display panel, and more particularly, to hold the flexible display to be measured in measuring electrical and optical characteristics expressed according to the bending degree of the flexible display. It relates to a jig device for applying physical deformation.

As the information and communication industry develops rapidly, the use of mobile phones, audio, monitors, digital cameras, large-area TVs, etc. is increasing, and accordingly, liquid crystal display (LCD), thin film transistor-liquid crystal display (TFT-LCD), Various kinds of display panels, such as organic light emitting diodes (OLEDs), have been developed and are being produced.

Among the display panels, organic light emitting diodes (OLEDs) have various advantages such as self-luminous, high efficiency, wide viewing angle, fast response speed, and low power consumption, but are not easy to reduce weight and large area. There is a disadvantage. Therefore, in order to solve this problem, a technique for manufacturing a light emitting device, a liquid crystal, and the like in the form of a flexible substrate is known.

This technology, called a flexible display, is a flat panel display using a substrate having bending characteristics such as plastic. It has been in the spotlight as a next-generation flat panel display that can be bent or rolled with excellent display characteristics, and can replace a conventional flat panel display due to the characteristics of a substrate that is thin, light, and flexible with impact resistance.

In order to find out various problems that occur during the development of the flexible display panel (hereinafter referred to as 'flexible display') and to improve various optical characteristics and lifetimes, the electrical and optical characteristics of the light emitting device according to the physical deformation of the flexible display It is very important to know the change. For this purpose, a measuring device for stressing a flexible display and measuring electrical and optical characteristics of the device generated at this time has been proposed.

Korean Patent Publication No. 2010-0026366 discloses a measuring device capable of measuring electrical and optical characteristics of a flexible display under the title 'OLED Specimen Testing Device'. The Republic of Korea Patent Publication No. 2010--26366 is characterized in that it is configured to apply a physical deformation such as bending to the flexible display to be measured, and to measure the electrical and optical characteristics of the flexible display according to the deformation.

The measuring device disclosed in the above patent provides a physical deformation such as stretching and banding repeatedly on a specimen by an actuator operation while holding both sides of the specimen to be measured by using a jig (described as the tester 20). It is configured to measure the electrical and optical characteristics of the flexible display expressed by the deformation due to the physical force provided by using an electric meter and an optical sensor.

As described above, the invention described in the prior art has an advantage in that it is advantageous to measure and grasp the characteristics of the flexible display compared to a simple two-dimensional planar measurement by applying a physical deformation to the flexible display and measuring the electrical and optical properties. However, there is a disadvantage in that the deformation rate of the specimen to be measured cannot be specifically identified in applying physical deformation to the specimen to be measured.

That is, although the prior art implements a mechanical mechanism for applying bending deformation to the specimen to be measured, when the physical force is applied to the deformation, the degree of bending (curvature and radius of curvature) of the specimen to be measured is specifically determined. In addition, the absence of a function that can measure or measure, there is a limit to more accurately measure and understand the electrical and optical characteristics of the flexible display according to the deformation of the specimen to be measured.

The technical problem to be solved by the present invention, in applying a physical force for measuring the electrical and optical characteristics of the flexible display, can measure and quantify the specific deformation degree of the flexible display, and thus the electrical Therefore, the present invention aims to provide an advantageous jig device for measuring optical characteristics more precisely.

As a means for solving the above problems, the present invention is a device for holding a measurement target flexible display in the measurement of the optical characteristics of the flexible display and to apply a physical deformation to the held flexible display, the base; A rotating stage rotatably mounted on the base via a rotation angle adjusting device; A movable block mounted on the rotation stage, the movable block being movable in two X- and Y-axis directions on the rotation stage; And a pair of parallel fixed shafts and movable shafts respectively installed at the center of the rotating stage and one side of the movable block, the holder having a holder for fixing the flexible display to be measured. It provides a jig device for.

In the present embodiment, the rotation angle adjusting mechanism includes a disk-shaped fixture and a disk-shaped rotor that rotates about the disk-shaped fixture, and the disk-rotator is dependent on the fine screw adjustment provided in the disk-shaped fixture. It may be a configuration having a rotation movement.

In addition, the movable block is a Y-axis movable block consisting of a Y-axis holder fixed to the rotating stage and Y-axis feeder reciprocating left and right along the Y-axis holder, and the Y-axis movable block of the Y-axis movable block X-axis movable block having an X-axis holder mounted and fixed in a direction crossing the Y-axis feeder and an X-axis feeder having a movement reciprocating in a direction perpendicular to the movement of the Y-axis feeder on the X-axis holder. It may be configured as.

Here, the scales for checking the movement distances of the transfer trays for the respective fixtures may be displayed on the sides of the holders and the transfer trays around the boundary line separating the Y-axis holders and the Y-axis holders and the X-axis holders and the X-axis holders. Can be.

In addition, in the present embodiment, the fixed shaft and the movable shaft may be an insulator having electrical insulation, and the holders provided on the fixed shaft and the movable shaft are detachably attached to each shaft to easily hold the flexible display to be measured. Can be.

According to the jig apparatus for measuring the electrical and optical characteristics of the flexible display according to an embodiment of the present invention, by measuring the position of the movable shaft quantitatively by using the rotating stage and the curvature measuring movable block, The degree of deformation of the flexible target to be measured on the rotating stage, that is, the curvature and the radius of curvature may be specifically measured and grasped.

That is, according to the jig device according to the embodiment of the present invention, the specific deformation degree of the flexible display can be quantified in applying a physical force to measure the electrical and optical characteristics of the flexible display, and thus the electrical and optical characteristics of the flexible display are identified. In this case, it is possible to implement a measuring device that can more accurately grasp the electrical and optical characteristics that change according to the degree of deformation of a specific flexible display.

1 is a perspective view of a jig device for measuring a flexible display characteristic according to an embodiment of the present invention.
Figure 2 is a side view of the jig device according to an embodiment of the present invention.
3 is a plan view of a jig device according to an embodiment of the present invention.
Figure 4 is a perspective view of the main part of the present invention showing a movable block mounted on a rotating stage in the jig device according to the present invention.
Figure 5 is a perspective view of another principal part of the present invention showing a fixed shaft and a movable shaft to which the flexible display to be measured in the jig device according to the present invention.
6 is an operational state diagram of the present invention for showing the curvature and curvature radius measurement process of the measurement target implemented by the jig device according to the present invention.
7 is a conceptual diagram for explaining the principle of curvature measurement at the time of curvature measurement by a jig device which is an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view of a jig device for measuring a flexible display characteristic according to an embodiment of the present invention, Figure 2 is a side view of a jig device according to an embodiment of the present invention. 3 shows a plan view of a jig device according to an embodiment of the present invention.

1 to 3, the jig device according to the present embodiment is largely divided into a base 1, a rotation stage 3, a movable block 4, and a pair of parallel fixed shafts 5 and a movable shaft ( 6), and by rotating and moving the rotating stage 3 and the movable block 4 in a state where both sides of the measurement target flexible display are fixed to the fixed shaft 5 and the movable shaft 6 ( Hereinafter, a physical deformation may be applied to the specimen (P).

The rotating stage 3 is rotatably mounted on the base 1 via the rotation angle adjusting device 2. Therefore, the rotation angle of the rotation stage 3 with respect to the base 1 can be adjusted by adjusting the rotation angle adjusting device 2. In this case, the rotation angle adjusting device 2 may be configured to include a disc-shaped fixture 22 and a disc-shaped rotor 24 rotating about the disc-shaped fixture 22.

The rotation of the disc-shaped rotor 24 relative to the disc-shaped fixture 22 can be realized by adjusting the fine screw 26 mounted on the disc-shaped fixture 22. In this case, in order to have a movement in which the disk-shaped rotating body 24 is rotated with respect to the disk-shaped fixture 22 in dependence on the fine screw 26 adjustment, it includes a worm and a worm wheel. It can be implemented via a transmission mechanism. However, the present invention is not limited thereto.

The movable block 4 is mounted on the rotary stage 3. The movable block 4 applies physical deformation to the specimen P while moving in the X-axis and Y-axis biaxial directions on the rotating stage 3. In order to realize biaxial movement on the rotating stage 3, the movable block 4 is arranged in a direction in which the X-axis movable block 4A and the Y-axis movable block 4B cross each other vertically on the rotary stage 3. A configuration with movement can be applied. Preferred embodiments of the movable block will now be described with reference to FIG. 4.

4 is a perspective view of the essential parts of the present invention, showing a preferred embodiment of the movable block 4 mounted on a rotating stage 3.

Referring to FIG. 4, the X-axis movable block 4A and the Y-axis movable block 4B are respectively moved by the X-axis holder 42 and the X-axis holder 42. , The Y-axis holder 46 and the Y-axis carriage 48 reciprocating left and right on the Y-axis holder 46, and the feeder 44 of the corresponding axis on the holders 42 and 46 of the corresponding axis. 48 may be configured to be reciprocated in a left and right sliding manner.

Preferably, the Y-axis holder 46 may be mounted and fixed to one side of the upper surface of the rotary stage 3, the X-axis holder 42 is the Y-axis holder 48 on the Y-axis holder 48 Mounting can be fixed in the direction orthogonal. When the X-axis holder 42 is mounted in the orthogonal direction above the Y-axis carriage 48, the Y-axis carriage 48 and the X-axis carriage 44 are linear to each other on the rotation stage 3. You have movement.

The movement of the X-axis carriage 44 and the Y-axis carriage 48 relative to the X-axis holder 42 and the Y-axis holder 46 is caused when the knobs Knob 40 mounted on the respective holders are rotated. Rotational movement of the knob 40 can be implemented through a mechanism that can be converted to a linear movement of each feed. For example, such a movement can be implemented as a horizontal moving device based on a rack & pinion transmission mechanism.

In order to grasp the quantitative movement of the X-axis carriage 44 and the Y-axis carriage 48 relative to the X-axis holder 42 and the Y-axis holder 46, the X-axis movable block 4A and Y-axis Each of the movable blocks 4B may be marked with a scale 49 for checking the movement distance. At this time, the scale 49, the Y-axis holder 46 and the Y-axis feeder 48, and each stand 42 around the boundary line separating the X-axis holder 42 and the X-axis holder 44 ( 46 and the side surfaces of the carriages 44 and 48, that is, the surfaces exposed to the outside.

5 is a perspective view of another principal part of the present invention showing a fixed shaft and a movable shaft to which the flexible target to be measured is measured in the jig device according to the present invention.

Referring to FIG. 5, the fixed shaft 5 and the movable shaft 6 applied in the present embodiment are respectively installed at the center of the rotary stage 3 and the movable block 4. The fixed shaft 5 penetrates the center of the rotating stage 3 so that the fixed shaft 5 does not rotate even when the rotating stage 3 is rotated, and the movable shaft 6 constitutes the movable block 4. (44) By being installed upright so as to be parallel to the fixed shaft 5 at a side with a variable distance, its position is changed on the plane by the rotation of the rotation stage 3.

The fixed shaft 5 and the movable shaft 6 may be an insulator having electrical insulation. Both sides of the specimen (P) are held at the front end of the fixed shaft (5) and the movable shaft (6), and holders (50) (60) at the ends of each of the shafts (4) and (6) for holding the specimen (P). ) May be provided. In this case, the holders 50 and 60 may be configured to be detachably mounted to each shaft so that the flexible display to be measured, that is, the specimen P can be easily held.

Next will be described in connection with the operation of the present invention the measurement process of the curvature and curvature radius of the specimen when the specimen deformation and specimen deformation performed by the jig device according to the embodiment of the present invention having the above configuration.

Figure 6 shows the operating state of the present invention for showing the curvature and curvature radius measurement process of the measurement target implemented by the jig device according to the present invention.

Referring to FIG. 6, one side and the other side of the flexible display to be measured, that is, the specimen P, are held on the fixed shaft 5 and the movable shaft 6, respectively. In this state, when a separate electrode body (not shown) is connected to both sides of the specimen fixed to each axis and power is input through the electrode body, the specimen P emits light by the input power. By using the electrical and optical characteristic measurement system (not shown) interlocked with the jig device according to the present embodiment, the electro-optical characteristics of the specimen P are measured.

In measuring the electrical and optical characteristics of the specimen P, the position of the movable shaft 6 relative to the fixed shaft 5 can be quantitatively changed by adjusting the position of the rotary stage 3 and the movable block 4. In the end, the degree of deformation of the measurement target specimen P held between the fixed shaft 5 and the movable shaft 6 may be changed. That is, the physical deformation of the specimen P can be quantitatively varied by adjusting the position of the rotary stage 3 and the movable block 4.

In the present embodiment, the degree of deformation of the specimen P according to the change of the position of the movable shaft 6 with respect to the fixed shaft 5, specifically, the curvature of the deformed specimen P and its radius of curvature can be calculated. . That is, the specific radius of curvature of the measurement target specimen may be calculated using the conceptual diagram illustrating the principle of measuring the radius of curvature of FIG. 7 and the following equation derived based on the geometric figure.

...(2)

...(2)

...(3)

... (3)

Where R is the length of the arc of the bending deformed specimen, r is the radius of curvature of the bending deformed specimen, and l is the linear distance between the axes, and θ represents the angle between the fixed axis and the movable axis relative to the center of curvature. In the above equation, the linear distance l between axes can be calculated from the rotation angle of the rotating stage and the moving distance of the X and Y sides of the movable block, and R is a constant.

If the above three equations ((1), (2), and (3)) are solved using the cubic system of equations, the movable shaft (6) can be positioned at a certain point using the fixed shaft (5) as the pivot axis. In this case, the radius of curvature r and θ of the test piece P, which is bent and deformed between the fixed shaft 5 and the movable shaft 6 according to the position of the movable shaft 6, can be calculated with specific values. When the degree of deformation of the specimen P to be bent and deformed can be grasped, it is possible to more accurately grasp the electrical and optical changes according to the degree of deformation of the specimen P.

As described above, the jig device for measuring the electrical and optical characteristics of the flexible display according to the embodiment of the present invention uses the rotation stage and the curvature measurement movable block to measure the electrical and optical characteristics of the specimen to be measured. The degree of deformation of the specimen, that is, the curvature and the radius of curvature, varies depending on the change.

That is, the degree of deformation of the flexible display can be calculated by applying a physical force to measure the electrical and optical characteristics of the flexible display. Accordingly, in determining the electrical and optical properties of the flexible display, Accordingly, it is possible to implement a measuring device that can more accurately grasp the changing electrical and optical characteristics.

In the foregoing detailed description of the present invention, only specific embodiments thereof have been described. It is to be understood, however, that the present invention is not limited to the specific forms referred to in the description, but rather includes all modifications, equivalents, and substitutions within the spirit and scope of the invention as defined by the appended claims. Should be.

1 Base 2 Rotation Angle Adjuster
3: rotating stage 4: movable block
4a: X-axis movable block 4b: Y-axis movable block
5: fixed shaft 6: movable shaft
26: Fine thread 40: Knob
42: X axis holder 44: X axis feeder
46: Y-axis holder 48: Y-axis feeder
49: scale 50,60: holder
P: Specimen (Flexible Display to Measure)

Claims (6)

In measuring the optical characteristics of a flexible display, a device for holding a flexible display to be measured and applying physical deformation to the held flexible display,
Base;
A rotating stage rotatably mounted on the base via a rotation angle adjusting device;
A movable block mounted on the rotation stage and configured to move in two X- and Y-axis directions on the rotation stage; And
And a pair of parallel fixed shafts and movable shafts respectively installed at the center of the rotating stage and at one side of the movable block and having a holder for fixing the flexible display to be measured.
The movable block,
A Y-axis movable block consisting of a Y-axis holder fixed to a rotating stage and a Y-axis feeder which reciprocates left and right along the Y-axis holder,
An X-axis holder mounted on the Y-axis carrier of the Y-axis movable block in a direction intersecting the Y-axis carrier and moving in a direction perpendicular to the movement of the Y-axis carrier on the X-axis holder. Jig device for measuring the characteristic of the flexible display, characterized in that consisting of the X-axis movable block made of an X-axis feeder having a.
The method of claim 1,
The rotation angle adjusting device,
A disk-shaped fixed body and a disk-shaped rotating body rotating about the disk-shaped fixed body, the disk-shaped rotating body having a rotational motion dependent on the fine-tuning screw adjustment provided in the disk-shaped fixed body. Jig device for measuring display characteristics.
delete The method of claim 1,
The scales for checking the movement distances of the transfer trays for the respective guides are marked on the side of each of the guides and the transfer zones around the boundary line separating the Y-axis holders and the Y-axis holders and the X-axis holders and the X-axis holders. Jig device for measuring the characteristics of the flexible display.
The method of claim 4, wherein
The fixed shaft and the movable shaft is a jig device for measuring the flexible display characteristics, characterized in that the insulator having electrical insulation.
The method of claim 5, wherein
The holder provided on the fixed shaft and the movable shaft, the jig device for measuring the flexible display characteristics, characterized in that the detachable device is installed on each axis.

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