KR102047379B1 - Apparatus and method for evaluating properties of panel - Google Patents

Apparatus and method for evaluating properties of panel Download PDF

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Publication number
KR102047379B1
KR102047379B1 KR1020130015462A KR20130015462A KR102047379B1 KR 102047379 B1 KR102047379 B1 KR 102047379B1 KR 1020130015462 A KR1020130015462 A KR 1020130015462A KR 20130015462 A KR20130015462 A KR 20130015462A KR 102047379 B1 KR102047379 B1 KR 102047379B1
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KR
South Korea
Prior art keywords
panel
fluid
stage
jig
blocking film
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Application number
KR1020130015462A
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Korean (ko)
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KR20140102048A (en
Inventor
전은영
박순룡
정철우
정우석
김태은
Original Assignee
삼성디스플레이 주식회사
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Priority to KR1020130015462A priority Critical patent/KR102047379B1/en
Publication of KR20140102048A publication Critical patent/KR20140102048A/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
    • G01M7/00—Vibration-testing of structures; Shock-testing of structures
    • G01M7/02—Vibration-testing by means of a shake table
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/006—Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays

Abstract

A panel characteristic evaluation apparatus and a panel characteristic evaluation method are provided. An apparatus for evaluating panel characteristics provided by the present invention is a stage in which a fluid is stored, a barrier film disposed on a fluid, a barrier film covering an upper surface of the fluid, and a jig for holding a panel. A jig for contacting or spaced apart from the blocking film, and a vibration generating member disposed under the stage to vibrate the fluid.

Description

Apparatus and method for evaluating properties of panel}

The present invention relates to a panel characteristic evaluation apparatus and a panel characteristic evaluation method, and more particularly, to a device for applying vibration to a part or all of the panel and a panel characteristic evaluation method using the same.

In accordance with the development of the information society, various flat panel display devices are receiving attention instead of the conventional CRT (Cathode Ray Tube) for displaying visual information. Such flat panel display devices include Plasma Display Panel (PDP) and FED ( Field emission display devices (LCDs), liquid crystal display devices (LCDs), organic light emitting diodes (OLEDs), and the like.

Such flat panel displays generally include a flat panel display panel having a plurality of pixels in which two glass substrates made of glass are bonded to each other and arranged in a matrix form. However, a flat panel display device using a glass substrate made of glass that is heavy, fragile and difficult to deform is limited in implementing a ubiquitous display that is required to output desired image information anytime and anywhere. As a result, development of a flexible display device using a substrate made of a light and flexible material, such as a plastic substrate, has been actively developed.

In addition, in response to this, various apparatuses for evaluating the optical properties and mechanical reliability of flexible panels are required.

Korean Laid-Open Patent Publication No. 10-2007-0051424

The problem to be solved of the present invention is to provide a panel characteristic evaluation apparatus for generating a vibration, and transmitting the generated vibration to the panel through a fluid.

Another object of the present invention is to provide a method for evaluating panel characteristics that generates vibrations and transmits the generated vibrations to the panel through a fluid.

The objects of the present invention are not limited to the above-mentioned technical problem, and other technical problems not mentioned will be clearly understood by those skilled in the art from the following description.

The apparatus for evaluating panel characteristics according to an embodiment of the present invention for solving the above problems is a stage in which a fluid is stored, a barrier film disposed on the fluid and covering the top surface of the fluid, and a jig for holding the panel. The jig is arranged to move and hold the panel in contact with or spaced apart from the blocking film, and a vibration generating member disposed under the stage to vibrate the fluid.

According to another aspect of the present invention, there is provided a method for evaluating panel characteristics, comprising: preparing a stage for storing a certain amount of fluid and a barrier film covering a top surface of the fluid; Generating vibration with the disposed vibration generating member.

 Specific details of other embodiments are included in the detailed description and drawings.

According to embodiments of the present invention has at least the following effects.

That is, the change in the characteristics of the panel can be measured by applying vibration to the panel.

It is also possible to apply vibration locally to specific areas of the panel.

In addition, efficient experiments can be conducted by controlling the strength or direction of vibration.

It is also applicable to panels that are bent or curved.

1 is a cross-sectional view of a panel characteristic evaluation apparatus according to an embodiment of the present invention.
2 is a cross-sectional view of a panel characteristic evaluation apparatus according to an embodiment of the present invention.
3 is a front view showing the state of the lower stage.
4 is a cross-sectional view of a panel characteristic evaluation apparatus according to an embodiment of the present invention.
5 is a cross-sectional view of a jig according to another embodiment of the present invention.
6 is a cross-sectional view of a panel characteristic evaluation apparatus according to another embodiment of the present invention.
7 is a cross-sectional view of a panel characteristic evaluation apparatus according to another embodiment of the present invention.
8 is a cross-sectional view showing a vertical positional relationship between components according to an embodiment of the present invention.

Advantages and features of the present invention and methods for achieving them will be apparent with reference to the embodiments described below in detail with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in various forms, and only the present embodiments are intended to complete the disclosure of the present invention, and the general knowledge in the art to which the present invention pertains. It is provided to fully convey the scope of the invention to those skilled in the art, and the present invention is defined only by the scope of the claims.

In addition, the expression "on" or "on" in this specification may be used to facilitate the description of the positional relationship between the invention configuration, and "under" or "below" according to the arrangement or viewing angle of each configuration Can be interpreted as

The fact that a component is "on top" of another component means that it is in contact with and is spaced on and above other components and intervened with another layer or other component in the middle. Include all cases.

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

Hereinafter, a panel tilt apparatus according to embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view of a panel characteristic evaluation apparatus according to an embodiment of the present invention. Referring to FIG. 1, a panel characteristic evaluation apparatus 100 according to an exemplary embodiment of the present invention is disposed on a stage 10 and a fluid 60 in which a fluid 60 is stored and covers an upper surface of the fluid 60. As the jig 30 to hold the blocking film 20 and the panel p, the panel p is disposed to move up and down on the blocking film 20 so that the held panel p is in contact with or spaced apart from the blocking film 20. The jig 30 includes a vibration generating member disposed under the stage 10 to vibrate the fluid 60.

Stage 10 provides a space for storing fluid 60. The stage 10 may include a bottom surface and sidewalls protruding from the bottom surface toward the top of the stage 10 to secure a space for storing the fluid 60.

The fluid 60 serves as a medium through which vibration is transmitted, regardless of its state or type. That is, not only liquid but also gas may be used, and a gel having a high viscosity may also be used.

The blocking film 20 covering the upper surface of the fluid 60 is disposed on the fluid 60. The blocking film 20 may be connected to the sidewall of the stage 10 to cover the top surface of the fluid 60. The blocking film 20 prevents the fluid 60 below the blocking film 20 from flowing out of the blocking film 20, and blocks the panel p from directly contacting the fluid 60.

The blocking film 20 may include an elastic material. For example, the blocking film 20 may include a material such as rubber, silicone, urethane, etc., but is not limited thereto, and the blocking film 20 may be used as a material of the blocking film 20 as long as the material can give elasticity to the blocking film 20. Do. The blocking film 20 including the elastic material may be deformed under a certain pressure. This will be described in detail later.

The jig 30 holding the panel p is disposed on the blocking film 20.

Panel p includes a display panel. In detail, the panel p may include a liquid crystal display (LCD) panel, organic light emitting diodes (OLED) panel, and other display panels. In addition, a flat panel as well as a panel having a curved surface (flexible) can be included (flexible) capable of bending, folding (folding) or rolling (rolling).

The jig 30 holds the panel p so that the panel p faces the blocking film 20. In an exemplary embodiment, the jig 30 may adsorb the panel p using a vacuum or secure the panel using a clamp.

The jig 30 can move up and down while holding the panel p. That is, the panel p may be in contact with the blocking film 20, or the panel p may be spaced apart from the blocking film 20 by a predetermined interval.

2 is a cross-sectional view of a panel characteristic evaluation apparatus according to an embodiment of the present invention. Referring to FIG. 2, the panel characteristic evaluation apparatus 100 according to the exemplary embodiment may include a fixing member for fixing the jig 30.

The jig 30 may be further lowered while the panel p and the blocking film 20 are in contact with each other. In this case, due to the pressure applied by the jig 30 to the blocking film 20, some areas including the area overlapping the jig 30 of the blocking film 20 may be recessed toward the fluid 60. The vertical positional relationship between the components will be described later in detail.

The blocking member 20 may further include a fixing member configured to fix the jig 30 thereon in a state where the blocking film 20 is recessed down. In an exemplary embodiment, the fixing member may be the clamp 40 but is not limited thereto. In addition, the fixing member may not only fix the jig 30, but also may press the jig 30 on the jig 30 to apply pressure to the blocking film 20.

3 is a front view showing the state of the lower stage. Referring to FIG. 3, a plurality of vibration generating members 50 may be disposed below the stage 10.

The vibration generating member 50 capable of vibrating the fluid 60 is disposed below the stage 10. The vibration generating member 50 generates a vibration and the vibration generated by the vibration generating member 50 may be transmitted to the panel p through the fluid 60.

At least one vibration generating member 50 may be disposed. If there are a plurality of vibration generating members 50 may further include a control means for individually controlling each vibration generating member (50).

4 is a cross-sectional view of a panel characteristic evaluation apparatus according to an embodiment of the present invention. Referring to FIG. 4, only a part of the plurality of vibration generating members 50 may be operated to locally vibrate a specific region of the panel p.

The vibration generating member 50 may vibrate the panel p as a whole, and may locally vibrate a specific region of the panel p in some cases.

The vibration generating member 50 may include a vibrator for generating vibration. In addition, the present invention is not limited thereto, and may include an injection nozzle for injecting the fluid 60.

Hereinafter, other embodiments of the present invention will be described. The same components as the components already described in the following embodiments will be referred to by the same reference numerals, and redundant descriptions will be omitted or simplified.

5 is a cross-sectional view of a jig according to another embodiment of the present invention. Referring to FIG. 5, the panel p according to the present embodiment is different from the embodiment of FIG. 1 in that the panel p is a flexible panel p.

As described above, the panel p may include not only flat panels but also curved panels or flexible panels that can be bent. When the jig holds the flexible panel p, the panel p may include an angled bent portion and a flat flat portion.

6 is a cross-sectional view of a panel characteristic evaluation apparatus according to another embodiment of the present invention. 6, the panel characteristic evaluation apparatus 100 according to another embodiment of the present invention is different from the embodiment of FIG. 1 in that the bending portion of the flexible panel p is locally vibrated.

Vibration generated by the vibration generating member 50 may vibrate the panel p as a whole, and in some cases, may locally vibrate a specific region of the panel p. When the panel is a flexible panel, the bending part may be locally vibrated to evaluate durability, reliability, and the like of the bending part.

7 is a cross-sectional view of a panel characteristic evaluation apparatus according to another embodiment of the present invention. Referring to FIG. 7, the vibration generating member includes the injection nozzle 51, which is different from the embodiment of FIG. 1.

The vibration generating member may include a vibrator for generating vibration. In addition, the present invention is not limited thereto, and may include an injection nozzle 51 for injecting a fluid. When the vibration generating member is the injection nozzle 51, the specific region of the panel p may be vibrated more strongly.

Although not shown in the drawings, when the vibration generating member is the injection nozzle 51, the control means may include a valve for controlling opening and closing of each of the injection nozzles 51.

Although not shown in the drawings, the panel characteristic evaluation apparatus 100 according to an embodiment of the present invention may further include a temperature control device for controlling the temperature of the fluid 60. In the case of further comprising a temperature control device, not only the durability evaluation of the panel p due to vibration, but also the characteristics according to the change of the ambient temperature can be evaluated.

Hereinafter, a vertical positional relationship of components according to an embodiment of the present invention will be described with reference to the drawings.

8 is a cross-sectional view showing the vertical positional relationship between the components according to an embodiment of the present invention. Referring to Figure 8, it can be seen the vertical positional relationship between the components. Specifically, the maximum value of the first distance d1 from the bottom surface of the stage 10 to the surface of the fluid 60 is the second distance from the bottom surface of the stage 10 to the panel p. It may be greater than the maximum value of d2).

As such, when the maximum value of the first distance is greater than the maximum value of the second distance, vibrations transmitted through the fluid 60 may reach the entire area of the panel p evenly. Although illustrated in the drawing as a flexible panel p, the same is true for the flat panel p.

Hereinafter, a panel characteristic evaluation method according to an embodiment of the present invention will be described.

According to an exemplary embodiment of the present invention, a method for evaluating panel characteristics may include preparing a stage 10 for storing a certain amount of fluid 60 and a blocking film 20 covering an upper surface of the fluid 60, and a panel (on the blocking film 20). arranging p) and generating vibration with the vibration generating member 50 disposed below the stage 10.

Stage 10 provides a space for storing fluid 60. The stage 10 may include a bottom surface and sidewalls protruding from the bottom surface toward the top of the stage 10 to secure a space for storing the fluid 60.

The blocking film 20 covering the upper surface of the fluid 60 is disposed on the fluid 60. The blocking film 20 may be connected to the sidewall of the stage 10 to cover the top surface of the fluid 60. The blocking film 20 prevents the fluid 60 below the blocking film 20 from flowing out of the blocking film 20, and blocks the panel p from making direct contact with the fluid.

When the stage 10 and the barrier film 20 are prepared, the panel p is disposed thereon. The arrangement of the panel p may be performed by the jig 30 holding the panel p as described above. When the panel p is disposed, the vibration generating member 50 disposed below the stage 10 may generate vibration, and the generated vibration may be transmitted to the panel p through the fluid 60. The vibration generating member 50 may be at least one as described above.

The method for evaluating panel characteristics according to an embodiment of the present invention may further include locally oscillating a specific region of the panel p. Vibration generated by the vibration generating member 50 may vibrate the panel p as a whole, and in some cases, may locally vibrate a specific region of the panel p. When the panel p is a flexible panel, the bending part may be locally vibrated to evaluate durability, reliability, and the like of the bending part.

The vibration generating member 50 may include a vibrator or a spray nozzle. When the vibration generating member is the injection nozzle 51, the specific region of the panel p may be vibrated more strongly.

In the method for evaluating panel characteristics according to the exemplary embodiment of the present invention, the jig 30 is further lowered in a state where the panel p and the blocking film 20 are in contact with each other to include a region overlapping the jig 30 of the blocking film 20. The method may further comprise recessing the region.

However, even in this case, the maximum value of the first distance d1 from the bottom surface of the stage 10 to the surface of the fluid 60 is the second distance d2 from the bottom surface of the stage 10 to the panel p. ) May be greater than the maximum value.

As such, when the maximum value of the first distance is greater than the maximum value of the second distance, vibrations transmitted through the fluid 60 may reach the entire area of the panel p evenly. Although illustrated in the drawing as a flexible panel p, the same is true even in the case of a flat panel. (See Figure 8)

Although the embodiments of the present invention have been described above with reference to the accompanying drawings, those skilled in the art to which the present invention pertains may be embodied in other specific forms without changing the technical spirit or essential features of the present invention. I can understand that. Therefore, it should be understood that the embodiments described above are exemplary in all respects and not restrictive.

10: stage
20: barrier
30: jig
p: panel
40: clamp
60: fluid
50: vibration generating member
51; Spray nozzle

Claims (14)

A stage in which the fluid is stored;
A blocking film disposed on the fluid and covering an upper surface of the fluid;
A jig for holding a panel, the jig being disposed up and down on the blocking film so that the held panel is in contact with or spaced apart from the blocking film; And
A vibration generating member disposed below the stage and disposed inside the fluid to vibrate the fluid;
And the barrier layer includes an elastic material, and when the jig is lowered while the panel is in contact with the barrier layer, a portion of the barrier layer including the overlapped portion of the panel is recessed toward the fluid. delete According to claim 1,
And a fixing member configured to fix the jig while the jig is lowered and the blocking film is recessed. According to claim 1,
The panel includes a bending portion that is bent in accordance with the shape of the jig in contact with the panel, panel vibration evaluation device vibration caused by the vibration generating member vibrating the bending portion. According to claim 1,
And the panel comprises a flexible panel. According to claim 1,
The vibration generating member includes a plurality of spray nozzles capable of adjusting the spray direction. The method of claim 6,
And a control means for controlling opening and closing of each of the spray nozzles. According to claim 1,
And a temperature regulating device for adjusting the temperature of the fluid. Preparing a stage for storing a certain amount of fluid and a barrier film disposed on the stage;
Disposing a panel on the barrier layer; And
Generating vibration with a vibration generating member disposed below the stage and disposed inside the fluid,
Pressing the panel in contact with the barrier layer and recessing a portion of the barrier layer including a portion overlapping with the panel to a predetermined depth and fixing the panel. delete The method of claim 9,
And the maximum value of the distance from the stage bottom surface to the fluid surface is greater than the maximum value of the distance from the stage bottom surface to the panel. The method of claim 9,
And the vibration generating member includes at least one spray nozzle. The method of claim 12,
Vibrating a specific area of the panel using the spray nozzle. The method of claim 12,
The panel includes a flexible panel having a bending portion, wherein the injection nozzle vibrates the bending portion of the flexible panel.
KR1020130015462A 2013-02-13 2013-02-13 Apparatus and method for evaluating properties of panel KR102047379B1 (en)

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KR102272450B1 (en) * 2014-08-26 2021-07-02 엘지디스플레이 주식회사 Method for evaluating liquid crystal disaplay panel and apparatus using the same

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007315929A (en) * 2006-05-26 2007-12-06 Hitachi High-Tech Engineering Service Corp Lighting inspecting apparatus and lighting inspecting method of liquid crystal panel
US20130002583A1 (en) * 2011-06-30 2013-01-03 Jin Dong-Un Flexible display panel and display apparatus including the flexible display panel

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60339A (en) * 1983-06-03 1985-01-05 Japan Radio Co Ltd Device for impressing and detecting underwater vibration
KR20070051424A (en) 2005-11-15 2007-05-18 삼성전자주식회사 Inspection apparatus of liquid crystal display panel

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007315929A (en) * 2006-05-26 2007-12-06 Hitachi High-Tech Engineering Service Corp Lighting inspecting apparatus and lighting inspecting method of liquid crystal panel
US20130002583A1 (en) * 2011-06-30 2013-01-03 Jin Dong-Un Flexible display panel and display apparatus including the flexible display panel

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