KR20160144694A - Bending Test Apparatus for Flexible Display Device - Google Patents

Bending Test Apparatus for Flexible Display Device Download PDF

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Publication number
KR20160144694A
KR20160144694A KR1020150081137A KR20150081137A KR20160144694A KR 20160144694 A KR20160144694 A KR 20160144694A KR 1020150081137 A KR1020150081137 A KR 1020150081137A KR 20150081137 A KR20150081137 A KR 20150081137A KR 20160144694 A KR20160144694 A KR 20160144694A
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South Korea
Prior art keywords
flexible display
display device
roller
fixing
back plate
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KR1020150081137A
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Korean (ko)
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KR101728014B1 (en
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이재현
박종열
김민희
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한밭대학교 산학협력단
한밭대학교 산학협력단
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Priority to KR1020150081137A priority Critical patent/KR101728014B1/en
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
    • G01M11/30—Testing of optical devices, constituted by fibre optics or optical waveguides
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J1/00—Photometry, e.g. photographic exposure meter
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
    • G01M11/08—Testing mechanical properties
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N19/00—Investigating materials by mechanical methods
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications

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  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Optics & Photonics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Electroluminescent Light Sources (AREA)

Abstract

The present invention discloses a flexible display device bending test apparatus. The flexible display device bending test apparatus of the present invention includes: a curvature adjusting unit for adjusting a bending angle of a flexible display device; Roller fixing means disposed on both sides of the curvature adjusting portion and fixing the flexible display device; A back plate for fixing the roller fixing means; And a photosensor disposed above the curvature control unit.
Therefore, the flexible display apparatus bending test apparatus of the present invention can acquire the light amount information corresponding to the number of bending or bending times of the flexible display apparatus, and has an effect of precisely evaluating the life characteristics and the durability of the flexible display apparatus .

Description

TECHNICAL FIELD [0001] The present invention relates to a bending test apparatus for a flexible display device,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a flexible display device banding tester, and more particularly to a flexible display device banding tester capable of precisely measuring the lifetime of a display device by measuring the amount of light while bending or bending the flexible display device repeatedly .

2. Description of the Related Art In general, a flat panel display device includes a liquid crystal display (LCD), a plasma display panel (PDP), an electrophoretic display device, and an organic light emitting display (OLED) . They are thinner and lighter than conventional cathode ray tube displays (CRTs) and can operate with low power and low driving voltage and are used in various electronic devices.

Particularly, the electrophoretic display and the organic light emitting diode display (OLED) are advantageous in that the layers formed on the substrate are organic layers having elasticity, have a high response speed, have a high luminous efficiency, a high luminance and a wide viewing angle, Technology is easy to apply.

In recent years, flexible display devices capable of flexing and bending by replacing the substrate used in the flat panel display with a flexible substrate have been actively developed. The flexible display device is provided with a bendable display device flexibly bent at a predetermined angle, a collapsible foldable display device, a rollable display device that can be rolled up like a paper, And a stretchable display device.

The flexible display device basically has a characteristic that the display device is bent or curved. When the flexible display device is bent or bent repeatedly, unlike the area where the display device is bent or bent, a problem of degradation of the screen product occurs.

Therefore, when the flexible display device is bent or bent repeatedly, it is necessary to quickly analyze the image quality difference occurring sequentially in the flexural region of the flexible display device, and to measure the lifetime of the flexible display device.

This is because the lifetime is shorter than when the flexible display device is bent or bent by repeatedly bending or bending the flexible display device for a long period of time, so it is necessary to analyze and grasp the durability that the flexible display device can withstand and the change in physical properties of the device configuration.

Based on the above analysis, it is possible to develop device structure material selection or manufacturing method change for enhancing the durability of the flexible display device, which can serve as a basis for extending the life of the flexible display device.

Further, based on the above analysis, it is possible not only to improve the physical durability of the flexible display device but also to reduce the image quality degradation due to warping by supplying the compensated pixel signal to the pixels corresponding to the bent or bent region.

However, in the prior art, the life of the flexible display device due to bending or bending (the degree of degradation of the screen quality, etc.) is primarily bent or flexed repeatedly on the flexible circuit display device, And the flexible display devices were individually inspected.

Therefore, when the flexible display device is bent or bent repeatedly, there is a disadvantage in that it can not be concretely understood whether the durability limit is exceeded at any stage and whether the element constitution material changes.

Therefore, there have been limitations in developing appropriate effective remedies for measuring the life span and extending the life span of the flexible display device.

An object of the present invention is to provide a flexible display device bending test apparatus capable of measuring the light amount of a flexible display device while bending or bending the flexible display device repeatedly.

It is another object of the present invention to provide a flexible display device bending test apparatus capable of collecting light quantity information corresponding to the number of times of bending or bending of a flexible display device and accurately evaluating the life characteristics and durability of the flexible display device There is a purpose.

According to an aspect of the present invention, there is provided a bending test apparatus for a flexible display device including: a curvature adjusting unit for adjusting a bending angle of a flexible display device; Roller fixing means disposed on both sides of the curvature adjusting portion and fixing the flexible display device; A back plate for fixing the roller fixing means; And a photosensor disposed above the curvature control unit.

The position sensor unit may further include a photosensor supporting unit that overlaps with the curvature adjusting unit and includes the optical sensor. The position sensor unit is disposed at one side of the back plate, and counts the number of times the back plate is repeated up and down. And a driving unit for supplying a power for repetitively moving the back plate in the vertical direction.

The roller fixing means includes a pair of first roller portions and a second roller portion, wherein the first roller portion or the second roller portion includes first and second rollers, respectively, and the first roller And the second roller portion are opposed to each other with the flexible display device therebetween.

The back plate may have a plurality of fixing holes to which the roller fixing means may be fixed, the plurality of fixing holes may be divided into first fixing holes and second fixing holes, And a flexible display unit fixed on the flexible display unit corresponding to the curvature adjusting unit, wherein the back plate comprises a horizontal wing portion and a body portion having a U shape from the wing portion, And a portion of the back plate is located between the wing portions of the back plate.

INDUSTRIAL APPLICABILITY The flexible display device bending test apparatus of the present invention has an effect that the light amount of the flexible display device can be measured while bending or bending the flexible display device repeatedly.

Further, the flexible display apparatus bending test apparatus of the present invention is capable of collecting light quantity information corresponding to the number of times of warping or bending of the flexible display apparatus, and thus has an effect of precisely evaluating the life characteristics and the durability of the flexible display apparatus .

1 is a perspective view showing a flexible display device bending test apparatus according to the present invention.
2 is a front view of a flexible display device bending test apparatus according to the present invention.
3A is a view showing a roller fixing means used in the flexible display apparatus bending test apparatus of the present invention.
3B is a view showing a state in which the flexible display device is fixed using the roller fixing means according to the present invention.
4A is a view showing a structure of a back plate of a flexible display device bending test apparatus according to the present invention.
4B is a view showing a state in which the roller fixing means is fastened to the back plate of the present invention.
5 is an exploded perspective view of an optical sensor support unit, a flexible display unit fixing unit, and a curvature control unit of the flexible display apparatus bending test apparatus of the present invention.
6A and 6B are views showing the fastening structure of the flexible display device fixing portion and the curvature adjusting portion of the flexible display device bending test apparatus of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention, and the manner of achieving them, will be apparent from and elucidated with reference to the embodiments described hereinafter in conjunction with the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. Is provided to fully convey the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims.

The shapes, sizes, ratios, angles, numbers, and the like disclosed in the drawings for describing the embodiments of the present invention are illustrative, and thus the present invention is not limited thereto. Like reference numerals refer to like elements throughout the specification. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail.

In the case where the word 'includes', 'having', 'done', etc. are used in this specification, other parts can be added unless '~ only' is used. Unless the context clearly dictates otherwise, including the plural unless the context clearly dictates otherwise.

In interpreting the constituent elements, it is construed to include the error range even if there is no separate description.

In the case of a description of the positional relationship, for example, if the positional relationship between two parts is described as 'on', 'on top', 'under', and 'next to' Or " direct " is not used, one or more other portions may be located between the two portions.

In the case of a description of a temporal relationship, for example, if the temporal relationship is described by 'after', 'after', 'after', 'before', etc., May not be continuous unless they are not used.

The first, second, etc. are used to describe various components, but these components are not limited by these terms. These terms are used only to distinguish one component from another. Therefore, the first component mentioned below may be the second component within the technical spirit of the present invention.

It is to be understood that each of the features of the various embodiments of the present invention may be combined or combined with each other, partially or wholly, technically various interlocking and driving, and that the embodiments may be practiced independently of each other, It is possible.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the drawings, the size and thickness of the device may be exaggerated for convenience. Like reference numerals designate like elements throughout the specification.

FIG. 1 is a perspective view showing a flexible display apparatus bending test apparatus according to the present invention, and FIG. 2 is a front view of a flexible display apparatus bending test apparatus according to the present invention.

1 and 2, a flexible display device bending test apparatus 100 according to the present invention includes a curvature adjuster 130 (see FIG. 1) 130 arranged to overlap with a partial area of a flexible display device 200 to adjust an angle of bending or bending, An optical sensor supporting part 185 disposed on the curvature adjusting part 130 in a superimposed manner and having an optical sensor 180 disposed thereon and an optical sensor supporting part 185 disposed between the optical sensor supporting part 185 and the curvature adjusting part 130, A flexible display device fixing part 135 for preventing the flexible display device 200 from flowing when the flexible display device 200 is repetitively bent or bent, a roller fixing device 300 for fixing the flexible display device 200 which performs vertical / A back plate 161 for fixing the roller fixing means 300, a driving unit 120 for supplying power to the back plate 161 so that the back plate 161 can be moved repeatedly, The shaft (122) disposed between the driving portions A position sensor 155 disposed at one side of the back plate 161 to sense the position of the back plate 161 and a controller for controlling the position sensor 155 and the driving unit 120 And a base frame 101 for fixing the curvature adjusting unit 130, the back plate 161, and the driving unit 120.

The curvature adjuster 130 has a cylindrical structure and can control the degree of bending or bending of the flexible display device 200 by controlling the curvature 1 / R according to the radius R of the cross-section circle . The curvature adjuster 130 may have a cylindrical structure. However, the curvature adjuster 130 may be modified into various shapes depending on the circumstances, such as a cylindrical structure having a polygonal cross section and a conical structure.

For example, when the radius R of the curvature adjuster 130 is large, the curvature 1 / R has a small value, and when the radius R is small, the curvature has a large value. Therefore, when the radius R of the curvature adjuster 130 is small, the curvature of the curvature adjuster 130 increases, and the degree of bending or bending of the flexible display device 200 becomes large.

Conversely, when the radius R of the curvature adjusting unit 130 is large, the curvature of the curvature adjusting unit 130 is reduced, and the degree of bending or bending of the flexible display device 200 is reduced.

Therefore, in the flexible display device bending test apparatus 100 according to the present invention, the degree of curvature capable of flexing the flexible display device 200 is variously set according to the radius R of the curvature adjusting unit 130, The lifetime measurement test of the flexible display device 200 can be performed.

In addition, the optical sensor support part 185 is disposed in a structure in which one side of the optical sensor support part 185 is overlapped with the curvature control part 130 and the curvature control part 130 is surrounded. A sensor fixing part 170 integrally formed with the optical sensor supporting part 185 protrudes from one end of the optical sensor supporting part 185. The optical sensor 180 is disposed under the sensor fixing part 170 As shown in Fig. A sensor cable 181 connected to the optical sensor 180 and supplying power is passed through the sensor fixing portion 170 and is led out to the outside along the upper surface of the optical sensor supporting portion 185. The sensor cable 181 is connected to the control unit 150 through the base frame 101, although it is not clearly shown in the drawing.

The flexible display device fixing part 135 is disposed between the optical sensor supporting part 185 and the curvature adjusting part 130 and the flexible display fixing part 135 is provided in a region corresponding to the optical sensor 180. [ (See the second open area B in Fig. 5)

Therefore, the optical sensor 180 disposed on the optical sensor support unit 185 repeatedly undergoes the bending or bending test repeatedly through the open area (the second open area in FIG. 5) of the flexible display device fixing unit 135 (Video brightness) of the flexible display device 200 that is being displayed.

In the present invention, the roller fixing device 200 includes a first roller part 310 and a second roller part 320 for fixing the flexible display device 200 while bending or bending the flexible display device 200 repeatedly. (300) are disposed.

The first roller portion 310 and the second roller portion 320 of the roller fixing means 300 are arranged to face each other on the lower side and the upper side of the flexible display device 200, The flexible display device 200 is fixed.

The roller fixing unit 300 may move the first roller unit 310 and the second roller unit 320 to the flexible display device 200 while the flexible display device 200 is being bent or bent, The flexible display device 200 can be prevented from flowing even during the life test.

Therefore, since the first roller 310 and the second roller 320 are fixed to the backplate 161, the backplate 161 moves up and down according to the vertical movement of the backplate 161, The flexible display device 200 can be constantly fixed.

The first roller portion 310 and the second roller portion 320 are connected to a plurality of fixing holes Holes H1 and H2 formed on the back plate 161 And the vertical reciprocating motion of the back plate 161 is performed by a shaft 122 connected to the driving unit 120. [

Since the back plate 161 is connected to the shaft 122, the rotation of the driving unit 120 converts the linear motion of the shaft 122 connected to the driving unit 120 into a vertical linear motion. .

The fixing holes formed in the back plate 161 are divided into a first fixing hole H1 and a second fixing hole H2. In the first fixing hole H1, The first roller portion 310 of the roller fixing means 300 is fastened to the second fixing hole H2.

A position sensor 155 is disposed at one side edge of the back plate 161. The position sensor 155 senses the position of the back plate 161 that is moving up and down, . The position sensor unit 155 is fixed to the sensor support unit 160.

Therefore, since the number of repetitions of the back plate 161 detected by the position sensor unit 155 corresponds to the number of bending or bending of the flexible display device 200, the number of bending times of the flexible display device 200, The lifetime of the flexible display device 200 can be predicted and measured according to a change in the amount of light of the display device 200. [

In the present invention, the flexural or bending test is performed on the flexible display device 200, and the durability of the flexible display device 200 or the change in physical properties of the device configuration with respect to the variation in the amount of light generated in the flexible display device 200 is analyzed The flexible display device 200 is connected to the power supply unit 200. The power supply unit 200 includes a connector 220a for electrical connection with the flexible display device 200 and a power cable 220b connected to the connector 220a.

Although not shown in the drawings, reference numeral 190 denotes a fixing screw, and reference numeral 121 denotes a guide plate 121 for guiding the vertical reciprocating motion of the shaft 122.

The concrete operation of the flexible display device bending test apparatus 100 of the present invention having the above structure is as follows.

First, the curvature control unit 130 having a predetermined curvature (1 / R) is selected for the bending test (life measurement) of the flexible display device 200 and placed in the flexible display device bending test apparatus 100 do. Then, a part of the flexible display device 200 is positioned on the curvature adjuster 130, and both side portions thereof are fixed to the roller fixing means 300 disposed on the back plate 161. At least two roller fixing means 300 may be disposed on the back plate 161 having a U-shaped structure so as to face each other.

That is, the roller fixing means 300 is fixed to both sides of the back plate 161 with the curvature adjusting unit 130 interposed therebetween.

The position of the roller fixing means 300 may be adjusted according to the degree of curvature of the curvature adjusting portion 130. The fixing position of the roller fixing means 300 may be determined by the first and second 2 fixed holes H1 and H2.

When the flexible display device 200 is fixed to the roller fixing means 300, the flexible display device fixing portion 135 disposed on the curvature adjusting portion 130 is adjusted to adjust the curvature adjusting portion 130 of the flexible display device 200 is adjusted.

The degree of fixation of the flexible display device 200 is adjusted by a fixing screw 190 disposed on the flexible display device fixing part 135.

Power is supplied to the flexible display device 200 according to the control signal of the controller 150 shown in FIG. 1 and the optical sensor 180 and the sensor support 160 The power is supplied to the position sensor unit 155 disposed in the sensing unit 155, and the sensing operation proceeds.

At this time, the control unit 150 operates the driving unit 120, and the back plate 161 reciprocates in a vertical direction according to the operation of the driving unit 120. [

As described above, the back plate 161 moves up and down by a shaft 122 connected to the driving unit 120. The roller fixing unit 300 fixed to the back plate 161 rotates the flexible display And supports the apparatus 200, so that the flexible display device 200 also moves up and down.

When the back plate 161 reciprocates in the vertical direction, the flexible display device 200 is bent to have a predetermined curvature by the curvature adjusting unit 130 disposed at the lower portion.

As described above, when the flexible display device 200 is repeatedly bent, the light sensor 180 disposed at a position corresponding to the curvature adjuster 130 can detect the amount of light (brightness of the image) of the flexible display device 200, Lt; / RTI > Accordingly, the amount of light that is changed in the area of the flexible display device 200 corresponding to the curvature adjuster 130 can be continuously collected.

Although not shown in the drawing, the optical sensor 180 may be connected to a storage unit, which may be a computer or a storage device having a microprocessor.

In addition, the position sensor unit 155 fixedly arranged on the sensor support unit 160 may continuously count the number of times the back plate 161 repeats up and down, and may store the counting information in the storage unit.

Therefore, the flexible display device bending test apparatus 100 of the present invention is configured such that the light amount information of the flexible display device 200 collected by the optical sensor 180 and the number of bending or bending repetitions obtained by the position sensor unit 155 There is an effect that the life of the flexible display device 200 can be predicted and measured based on the information.

That is, in the present invention, since the amount of light corresponding to the number of times of flexing or bending the flexible display device 200 can be measured, the durability of the flexible display device 200 or the physical properties The change can be measured precisely.

As described above, the flexible display device bending test apparatus 100 of the present invention can confirm the display quality of the flexible display device 200 at the same time while performing the bending or bending test on the flexible display device 200, Life can be measured.

FIG. 3A is a view showing a roller fixing means used in the flexible display device bending test apparatus of the present invention, FIG. 3B is a view showing a state in which the flexible display device is fixed using the roller fixing means according to the present invention, FIG. 4A is a view showing a structure of a back plate of a flexible display device bending test apparatus according to the present invention, and FIG. 4B is a view showing a state in which a roller fixing means is fastened to a back plate of the present invention.

Referring to FIGS. 3A to 4B, the roller fixing unit 300 of the present invention includes a first roller unit 310 and a second roller unit 320, and the first roller unit 310 And the second roller portion 320 have the same components corresponding to each other.

However, in the present invention, the sizes of the first and second roller parts 310 and 320 are different from each other, so that the flexible display device 200 having various sizes and shapes can be fixed and supported.

The width of the rollers of the first roller portion 310 contacting the lower surface of the flexible display device 200 is formed larger than the width of the rollers of the second roller portion 320 contacting the upper surface, can do.

The roller fixing means 300 may be constituted by a pair of first and second roller portions 310 and 320 and the roller fixing means 300 may be disposed on the back plate 161 in a pair . Therefore, the flexible display device 200 is fixed at both sides by a pair of roller fixing means 300. [

The first roller portion 310 includes a support portion 315, a fixing portion 311 disposed at one side edge of the support portion 315 and fastened to the fixing holes H1 and H2 of the back plate 161, A distance adjusting unit 312 for adjusting the distance between the first and second rollers 313 and 316 disposed on the support unit 315 and the first and second rollers 313 and 316, And first and second guides 313 and 317 respectively disposed on the first and second guide plates 313 and 316, respectively.

The second roller portion 320 also has the same configuration as the first roller portion 310. Accordingly, the second roller portion 320 includes the support portion 325, the fixing portion 321, the first and second rollers 323 and 326, the distance adjusting portion 322, the first and second guides 323 and 323, 327).

The roller fixing means 300 having the above-described configurations is arranged to face the back plate 161 of the flexible display device bending test apparatus 100 of the present invention with the curvature adjusting unit 130 therebetween.

3B, the flexible display device 200 is inserted and fixed between the first roller portion 310 and the second roller portion 320 of the roller fixing means 300. As shown in FIG.

The roller fixing means 300 is provided at one side of the supporting portion 315 of the roller fixing means 300 in the first fixing hole H1 and the second fixing hole H2 formed in the back plate 161, And fastened to the fixing portions 311 and 321 formed at the edges.

The roller fixing means 300 fixed to the back plate 130 reciprocates in a vertical direction and includes a first roller portion 310 and a second roller portion 300 contacting the upper surface of the lower surface of the flexible display device 200, (320) rotates while contacting the upper surface and the lower surface of the flexible display device (200).

Therefore, the flexible display device 200 fixed by the roller fixing means 300 has the effect of being fixedly supported and fixed without damaging the flexible display device 200 that performs up-and-down reciprocating motion.

4A and 4B, the back plate 161 of the present invention includes an upper horizontal wing 161a and a body portion 161b extending from the wing portion 161a and having a U-shaped structure ).

The wing portion 161a is formed at both ends of the body portion 161b and the body portion 161b is formed in a streamlined shape (U shape) .

A plurality of first and second fixing holes H1 and H2 are formed at a boundary between the wing portion 161a and the body portion 161b of the back plate 161. The first and second fixing holes H1 and H2 are positioned parallel to each other. Since the first roller portion 310 and the second roller portion 320 of the roller fixing means 300 are respectively fixed to the first and second fixing holes H1 and H2, The second roller portions 320 are positioned parallel to each other and perpendicular to each other.

The position of the roller fixing means 300 can be variously selected depending on the degree of bending or bending of the flexible display device 200. The plurality of first and second fixing holes The position of the roller fixing means 300 can be adjusted by selecting the rollers H1 and H2.

Since the body portion 161b of the back plate 161 has a U-shaped structure, the body portion 161b has a first open region A which is open at one side from the center. In the first open area A, the curvature adjusting unit 130 of the flexible display device bending test apparatus 100 of the present invention is positioned.

As shown in the figure, the wing portions 161a of the back plate 161 face each other with the first open region A therebetween.

FIG. 5 is an exploded perspective view of an optical sensor support, a flexible display fixture, and a curvature control unit of the flexible display apparatus bending test apparatus of the present invention. FIGS. 6A and 6B are views showing a flexible display apparatus And the curvature control portion.

5 to 6B, the flexible display device bending test apparatus 100 according to the present invention is characterized in that the flexible display device 200 is mounted on the roller fixing means 300 on the curvature adjusting unit 130 The flexible display device fixing part 135 is disposed above the flexible display device 200 and the optical sensor supporting part 185 is disposed above the flexible display device fixing part 135. [

A second open area B is formed at the center of the flexible display device fixing part 135 so that the flexible display device 200 can be exposed. And a third open region C is also formed in the second openings 185.

Therefore, the flexible display device fixing part 135 is formed in a frame structure with the second open area B as a center.

A sensor fixing part 170 is formed at one end of the optical sensor supporting part 185. A hole 182 partially opened in the sensor fixing part 170 is formed, The sensor cable 181 connected to the optical sensor 180 is pulled out through the hole 182 of the sensor fixing portion 170 after being fixed to the sensor fixing portion 170.

The sensor cable 181 drawn out to the outside can be connected to the controller 150 through the base frame 101 as shown in FIG.

Referring to FIGS. 6A and 6B together with FIG. 1, the flexible display device fixing unit 135 is disposed on the curvature adjusting unit 130 of the flexible display device bending test apparatus 100 of the present invention. The flexible display device fixing part 135 is located in a region where the flexible display device 200 is bent or bent when the flexible display device 200 undergoes the bending test.

1, a flexible display device 200 is disposed between the flexible display device fixing part 135 and the curvature adjusting part 130. The flexible display device 200 includes the flexible display device fixing part 200, Are fixed by the fixing screws 190 disposed on both sides of the fixing screw 135.

The second open area B formed at the center of the flexible display device fixing part 135 is overlapped with the curvature adjusting part 130 and overlapped with the second open area B, The light amount of the flexible display device 200 corresponding to the curvature adjusting unit 130 can be measured.

The fixing screw 190 disposed on the flexible display fixing part 135 may include first and second fixing screws 190a and 190b and may be fixed to the flexible display device The distance D between the portion 135 and the curvature adjusting portion 130 can be adjusted.

Therefore, even if the thickness of the flexible display device to be subjected to the lifetime measurement is different, the flexible display device 200 of the present invention can securely fix the flexible display device 200 in the curvature control part 130 area.

As described above, the flexible display device bending test apparatus of the present invention has an effect that the light amount of the flexible display device can be measured while bending or bending the flexible display device repeatedly.

Further, the flexible display apparatus bending test apparatus of the present invention is capable of collecting light quantity information corresponding to the number of times of warping or bending of the flexible display apparatus, and thus has an effect of precisely evaluating the life characteristics and the durability of the flexible display apparatus .

100: Flexible display device Banding test apparatus
101: Base frame
120:
130: Curvature control unit
150:
135: Flexible display device fixing part
180: Light sensor
185: optical sensor support
300: Roller fixing means

Claims (12)

A curvature adjuster for adjusting a curvature angle of the flexible display device;
Roller fixing means disposed on both sides of the curvature adjusting portion and fixing the flexible display device;
A back plate for fixing the roller fixing means; And
A flexible display device bending test apparatus including an optical sensor disposed on the upper portion of the curvature adjusting unit
The method according to claim 1,
Further comprising a photosensor support portion superimposed on the curvature adjusting portion and having the optical sensor disposed therein.
The method according to claim 1,
Further comprising a position sensor unit disposed at one side of the back plate and counting the number of times the back plate is repeated up and down.
The method according to claim 1,
And a driving unit for supplying power for repeatedly moving the back plate in the vertical direction.
The method according to claim 1,
Wherein the roller fixing means comprises a pair of first roller portions and a second roller portion.
6. The method of claim 5,
Wherein the first roller portion or the second roller portion includes a first roller and a second roller, respectively.
6. The method of claim 5,
Wherein the first roller portion and the second roller portion of the roller fixing means face each other with the flexible display device interposed therebetween.
The method according to claim 1,
Wherein the back plate is formed with a plurality of fixing holes through which the roller fixing means can be fixed.
8. The method of claim 7,
Wherein the plurality of fixing holes are divided into first fixing holes and second fixing holes, and the first fixing holes and the second fixing holes are parallel to each other. The method according to claim 1,
And a flexible display device fixing portion disposed on the flexible display device corresponding to the curvature adjusting portion.
The method according to claim 1,
Wherein the back plate comprises a horizontal wing portion and a body portion having a U-shape from the wing portion.
12. The method of claim 11,
Wherein the curvature adjusting unit is positioned between the wing portions of the back plate.
KR1020150081137A 2015-06-09 2015-06-09 Bending Test Apparatus for Flexible Display Device KR101728014B1 (en)

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US10557781B2 (en) * 2017-08-28 2020-02-11 Wuhan China Star Optoelectronics Semiconductor Display Technoloy Co., Ltd. Bending test device and system for flexible display device
CN107860561A (en) * 2017-11-09 2018-03-30 黎建军 A kind of flexible display screen flexural property measurement apparatus
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