WO2020087899A1

WO2020087899A1 - Support jig and drop ball test method

Info

Publication number: WO2020087899A1
Application number: PCT/CN2019/085589
Authority: WO
Inventors: 王永青
Original assignee: 武汉华星光电技术有限公司
Priority date: 2018-10-29
Filing date: 2019-05-05
Publication date: 2020-05-07
Also published as: CN109556976A

Abstract

A support jig and a drop ball test method. The support jig is used for drop ball tests, and comprises a platform (10) and a protruding portion (20) provided on the platform (10). The protruding portion (20) is used for placing a glass cover plate. The edge of the glass cover plate overlaps the edge of the protruding portion (20). The glass cover plate can be placed on the support jig stably when a drop ball test is performed on the glass cover plate. When a ball is dropped from a fixed height to impact the position of the glass cover plate where the strength needs to be tested, because the glass cover plate is placed on the support jig stably, the reliability of the drop ball test for the glass cover plate can be improved, and the strength test result of the glass cover plate is deterministic.

Description

Support jig and ball drop test method

Technical field

The invention relates to the field of display technology testing, in particular to a supporting jig and a ball drop testing method.

Background technique

Thin film transistor (TFT) is the current liquid crystal display (Liquid Crystal Display, LCD) and active matrix driven organic electroluminescence display device (Active Matrix Organic Light-Emitting The main driving element in Diode, AMOLED) is directly related to the display performance of the flat panel display device.

Most of the liquid crystal displays on the existing market are backlight type liquid crystal displays, which include a liquid crystal display panel and a backlight module. The working principle of the liquid crystal display panel is based on the thin film transistor array substrate (Thin Film Transistor Array Substrate, TFT Array Substrate) and the color filter (Color Filter, CF) liquid crystal molecules are poured in between the substrates, and pixel voltage and common voltage are applied to the two substrates respectively. The electric field formed between the pixel voltage and the common voltage controls the rotation direction of the liquid crystal molecules to change the backlight module ’s The light is transmitted out to produce the picture.

With the development of science and technology, flexible display devices show more and more extensive application prospects. The main advantage lies in its foldability, which can realize the diversification of products and achieve excellent display effect and appearance effect. For example, the currently popular three-dimensional (3D) curved display device, represented by Samsung, is more and more accepted and imitated by the public. 3D curved display devices are used in 3D glass covers. The strength of the 3D glass cover is a very important technical indicator. In the product evaluation and production process, the strength needs to be tested, usually through the ball drop test.

The commonly used falling ball experiment adopts a falling ball tester. The sample to be tested is placed on the instrument platform. A steel ball of a specific size is selected to fall from a fixed height. The impact is on the specified position of the 3D glass cover to be tested. Observe the 3D glass cover Whether there will be damage to determine the strength of the 3D glass cover. Due to its non-flat shape, the 3D glass cover cannot be like the 2D glass cover (that is, the overall flat glass cover) or the 2.5D glass cover (that is, the edges are curved, and the other areas are flat glass covers) ) Placed directly on the test platform, it is necessary to design a special fixture for the 3D glass cover to support, otherwise the ball drop experiment of the 3D glass cover is unreliable and the test results are uncertain.

technical problem

The purpose of the present invention is to provide a supporting jig, which can improve the reliability of the falling ball experiment of the glass cover plate and make the strength test result of the glass cover plate certain.

The object of the present invention is also to provide a ball drop test method, which can improve the reliability of the ball drop test of the glass cover plate and make the strength test result of the glass cover plate deterministic.

Technical solution

In order to achieve the above object, the present invention provides a supporting jig for ball drop test, including: a platform and a raised portion provided on the platform;

A glass cover plate is placed on the convex portion, and the edge of the glass cover plate coincides with the edge of the convex portion.

The shape of the raised portion is a rectangle with four corners that are arc-shaped and chamfered; the raised portion encloses a groove on the platform.

The glass cover plate is a 3D glass cover plate.

The width of the protrusion is 1-3 mm.

The supporting jig further includes a plurality of limit stoppers disposed around the protrusion; the height of the limit stop is greater than the height of the protrusion for resisting the glass cover.

The invention also provides a ball drop test method, which includes the following steps:

Step S1, providing a supporting jig; the supporting jig includes a platform and a raised portion provided on the platform;

Step S2: Place the glass cover on the convex portion, the edge of the glass cover coincides with the edge of the convex portion;

Step S3: The ball is dropped from a fixed height and impacted on the glass cover to be tested for strength.

The glass cover plate is a 3D glass cover plate.

The width of the protrusion is 1-3 mm.

Beneficial effect

Beneficial effect of the present invention: The supporting jig of the present invention is used for ball drop testing, and includes a platform and a raised portion provided on the platform; the raised portion is used to place a glass cover plate, and the glass cover plate The edge coincides with the edge of the convex part. When the glass cover plate is tested for falling balls, the glass cover plate can be placed on the support jig very smoothly. When the ball starts to fall from a fixed height, the strength needs to be tested when it hits the glass cover plate. The position of the glass cover plate is placed on the supporting fixture very smoothly, which can improve the reliability of the ball drop test of the glass cover plate and make the strength test results of the glass cover plate deterministic. The ball drop test method of the invention can improve the reliability of the ball drop test of the glass cover plate, and make the strength test result of the glass cover plate deterministic.

BRIEF DESCRIPTION

In order to further understand the features and technical content of the present invention, please refer to the following detailed description and drawings of the present invention. However, the drawings are provided for reference and explanation only, and are not intended to limit the present invention.

In the drawings,

1 is a schematic structural view of the supporting jig of the present invention;

FIG. 2 is a flowchart of the ball drop test method of the present invention.

Embodiments of the invention

In order to further elaborate on the technical means adopted by the present invention and its effects, the following will be described in detail with reference to the preferred embodiments of the present invention and the accompanying drawings.

Referring to FIG. 1, the present invention provides a supporting jig for ball drop testing, which includes: a platform 10 and a raised portion 20 provided on the platform 10;

A glass cover plate is placed on the raised portion 20, and the edge of the glass cover plate coincides with the edge of the raised portion 20.

It should be noted that when the glass cover plate is subjected to a ball drop test, the glass cover plate is placed on the convex portion 20 of the supporting jig, and the edge of the glass cover plate coincides with the edge of the convex portion 20, that is, the glass cover plate It can be placed on the support jig very smoothly. When the ball starts to fall from a fixed height and hits the position where the strength needs to be tested on the glass cover, the glass cover is placed on the support jig very smoothly, which can improve the glass cover The reliability of the ball drop test of the board makes the strength test results of the glass cover plate deterministic.

Specifically, the shape of the convex portion 20 is a rectangle with four corners that are arc-shaped and chamfered.

Further, the protrusion 20 forms a groove 30 on the platform 10.

Specifically, the glass cover plate is a 3D glass cover plate, that is, the entire surface of the glass substrate is a curved surface. In addition, the supporting jig of the present invention can also be used to place a 3D display module (that is, the assembly of a 3D glass cover plate and a flexible display module).

Specifically, the materials of the platform 10 and the raised portion 20 are acrylic or phenolic plastic, instead of using high-hardness materials such as metals or alloys, so as to reduce the impact of the ball drop test on the supporting fixture and extend the service life.

Specifically, the width of the convex portion 20 is 1-3 mm (that is, the width of the contact surface between the convex portion 20 and the platform 10 is 1-3 mm). As the width of the convex portion 20 is narrower, the support jig can bear The greater the impact energy, the width of the protrusion 20 is preferably 1 mm, the maximum stress when the supporting jig is impacted is relatively small, and the service life is extended.

Specifically, the height of the convex portion 20 (that is, the depth of the groove 30) should be smaller than the deformation caused by the ball impact of the glass cover plate, so that the glass cover plate will not contact with the inside of the groove 30 when deformed, and improve Reliability of the falling ball experiment of the glass cover.

Specifically, the support jig further includes a plurality of limit stops 40 disposed around the protrusion 20, and the height of the limit stop 40 is greater than the height of the protrusion 20 to resist the glass cover, The position of the glass cover plate is fixed, and the surface of the protrusion 20 is in good contact, and the glass cover plate is not moved by the force of the impact of the ball.

Further, the number of the limit stops 40 is four, and the four limit stops 40 are respectively located on the four sides of the protrusion 20.

Referring to FIG. 2, based on the above-mentioned support jig, the present invention also provides a ball drop test method, which includes the following steps:

Step S1, providing a supporting jig; the supporting jig includes a platform 10 and a protrusion 20 provided on the platform 10;

Step S2: Place the glass cover on the protrusion 20, and the edge of the glass cover coincides with the edge of the protrusion 20;

It should be noted that when the glass cover plate is subjected to a ball drop test, the glass cover plate is placed on the convex portion 20 of the supporting jig, and the edge of the glass cover plate coincides with the edge of the convex portion 20, that is, the glass cover plate It can be placed on the support jig very smoothly. When the ball starts to fall from a fixed height and hits the position where the strength needs to be tested on the glass cover, the glass cover is placed on the support jig very smoothly, which can improve the glass cover. The reliability of the ball drop test of the board makes the strength test results of the glass cover plate deterministic.

Further, the protrusion 20 forms a groove 30 on the platform 10.

Specifically, the glass cover plate is a 3D glass cover plate, that is, the entire surface of the glass substrate is a curved surface. In addition, the supporting jig of the present invention can also be used to place a 3D display module (that is, the assembly of a 3D glass cover plate and a flexible display module), that is, the falling ball test method of the present invention can also be used to test the falling ball of a 3D display module .

In summary, the supporting jig of the present invention is used for ball drop testing, and includes a platform and a convex portion provided on the platform; the convex portion is used for placing a glass cover plate, and an edge of the glass cover plate It coincides with the edge of the convex part. When the ball drop test is performed on the glass cover plate, the glass cover plate can be placed on the support jig very smoothly. When the ball starts to fall from a fixed height, impact on the glass cover plate needs to be tested for strength Position, because the glass cover is placed on the support jig very steadily, it can improve the reliability of the ball drop test of the glass cover and make the strength test results of the glass cover certain. The ball drop test method of the invention can improve the reliability of the ball drop test of the glass cover plate, and make the strength test result of the glass cover plate deterministic.

As mentioned above, those of ordinary skill in the art can make various other corresponding changes and modifications according to the technical solutions and technical concepts of the present invention, and all such changes and modifications should fall within the protection scope of the claims of the present invention. .

Claims

A supporting jig for ball drop test, comprising: a platform and a raised portion provided on the platform;

A glass cover plate is placed on the convex portion, and the edge of the glass cover plate coincides with the edge of the convex portion.
The supporting jig according to claim 1, wherein the shape of the convex portion is a rectangular shape with four corners being chamfered with arcs; the convex portion encloses a groove on the platform.
The supporting jig according to claim 1, wherein the glass cover plate is a 3D glass cover plate.
The supporting jig according to claim 1, wherein the width of the protrusion is 1-3 mm.
The supporting jig according to claim 1, further comprising a plurality of limit stoppers provided around the protrusion; the height of the limit stop is greater than the height of the protrusion for resisting the glass cover.
A ball drop test method includes the following steps:

Step S1, providing a supporting jig; the supporting jig includes a platform and a raised portion provided on the platform;

Step S2: Place the glass cover on the convex portion, the edge of the glass cover coincides with the edge of the convex portion;

Step S3: The ball is dropped from a fixed height and impacted on the glass cover to be tested for strength.
The ball falling test method according to claim 6, wherein the shape of the convex portion is a rectangle with four corners being arc-shaped and chamfered; the convex portion encloses a groove on the platform.
The ball drop test method according to claim 6, wherein the glass cover plate is a 3D glass cover plate.
The ball falling test method according to claim 6, wherein the width of the protrusion is 1-3 mm.
The ball falling test method according to claim 6, wherein the support jig further includes a plurality of limit stoppers disposed around the protrusion; the height of the limit stop is greater than the height of the protrusion To resist the glass cover.