CN215865747U

CN215865747U - Device for detecting adhesive bonding performance of touch screen

Info

Publication number: CN215865747U
Application number: CN202122034287.8U
Authority: CN
Inventors: 袁西平; 魏少明; 李冬花
Original assignee: Zhangzhou Wanlida Technology Co ltd
Current assignee: Zhangzhou Wanlida Technology Co ltd
Priority date: 2021-08-26
Filing date: 2021-08-26
Publication date: 2022-02-18
Anticipated expiration: 2031-08-26

Abstract

The utility model relates to the field of touch screen detection devices, in particular to a device for detecting the adhesive bonding performance of a touch screen. The utility model discloses a device for detecting the adhesive bonding performance of a touch screen, which comprises a detection light source and a flat mirror, wherein the detection light source is a surface light source, the detection light source is arranged below a functional sheet of the touch screen to be detected, the mirror is arranged above a cover plate of the touch screen to be detected and is parallel to the cover plate, part of light emitted by the detection light source is reflected by the mirror after penetrating through the touch screen to be detected, and part of the light is emitted from the upper surface of the mirror after penetrating through the mirror. The device can quickly and effectively detect the optical adhesive wrinkle defect of the touch screen, and has the advantages of simple structure, easy realization and low cost.

Description

Device for detecting adhesive bonding performance of touch screen

Technical Field

The utility model belongs to the field of touch screen detection devices, and particularly relates to a device for detecting the adhesive bonding performance of a touch screen.

Background

The touch screen can be correspondingly operated only by contacting the touch area, so that the experience and the response sensitivity of a user are greatly improved, and therefore, in recent years, the touch screen market is rapidly developed along with the rise of smart phones and tablet computers.

Capacitive touch screen includes apron and function piece (sensor), and apron and function piece pass through transparent optical cement (like SCA optical cement) laminating together, and the in-process of laminating, optical cement probably because technological parameters such as laminating in-process temperature, pressure do not have the management and control good, can appear the condition of fold in the local area of touch-sensitive screen, and when especially adopting SCA optical cement laminating, the condition that appears the fold is more. Since the optical adhesive, the cover plate and the functional sheet are all transparent, in the detection process after the bonding, the defect is difficult to find because the existing detection mode adopts a mode that human eyes directly view the touch screen, but the defect can influence the display effect in the actual use process. Therefore, it is necessary to develop a detection device to quickly and effectively detect the optical adhesive wrinkle defect of the touch screen.

Disclosure of Invention

The utility model aims to provide a device for detecting the adhesive bonding performance of a touch screen, which is used for solving the technical problems.

In order to achieve the purpose, the utility model adopts the technical scheme that: the utility model provides a detect device of touch-sensitive screen gluing laminating performance, includes testing light source and flat mirror, and testing light source is the area source, and testing light source is used for setting up in the function piece below of waiting to detect the touch-sensitive screen, and the mirror is used for setting up in the apron top of waiting to detect the touch-sensitive screen and with apron parallel arrangement, and the light that testing light source sent sees through to detect partly by the mirror reflection behind the touch-sensitive screen, and partly sees through the mirror and jets out by the upper surface of mirror.

Further, the detection light source is realized by a display screen.

Furthermore, the display screen is a display screen for displaying a white picture.

Furthermore, the brightness of the display screen is more than or equal to 800cd/m²。

Furthermore, the gap between the detection light source and the touch screen to be detected is less than or equal to 1 mm.

Further, the light transmittance of the mirror is 30% -70%, and the reflectivity of the mirror is 70% -30%.

Further, the mirror has a light transmittance of 50%.

Furthermore, the gap between the mirror and the touch screen to be detected is less than or equal to 2 mm.

Further, the brightness of the light emitted from the upper surface of the mirror is more than or equal to 250cd/m²。

Furthermore, the device also comprises a first supporting frame and a second supporting frame, wherein the first supporting frame is used for being arranged between the detection light source and the touch screen to be detected, and the second supporting frame is used for being arranged between the mirror and the touch screen to be detected.

The utility model has the beneficial technical effects that:

the utility model can quickly and effectively detect the wrinkle defect of the optical cement (especially SCA optical cement) of the touch screen, and has the advantages of simple structure, easy realization and low cost.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a block diagram of an embodiment of the present invention;

FIG. 2 is a block diagram of another perspective of an embodiment of the present invention;

FIG. 3 is a block diagram of another perspective of an embodiment of the present invention;

FIG. 4 is a cross-sectional view of an embodiment of the present invention;

fig. 5 is an exploded view of an embodiment of the present invention.

Detailed Description

To further illustrate the various embodiments, the utility model provides the accompanying drawings. The accompanying drawings, which are incorporated in and constitute a part of this disclosure, illustrate embodiments of the utility model and, together with the description, serve to explain the principles of the embodiments. Those skilled in the art will appreciate still other possible embodiments and advantages of the present invention with reference to these figures. Elements in the figures are not drawn to scale and like reference numerals are generally used to indicate like elements.

The utility model will now be further described with reference to the accompanying drawings and detailed description.

As shown in fig. 1-5, an apparatus for detecting a touch screen adhesive bonding performance includes a detection light source 1 and a flat mirror 2, the detection light source 1 is a surface light source, the detection light source 1 is configured to be disposed below a functional sheet 31 of a touch screen 3 to be detected, the mirror 2 is configured to be disposed above a cover plate 32 of the touch screen 3 to be detected and parallel to the cover plate 32, a part of light emitted by the detection light source 1 is reflected by the mirror 2 after passing through the touch screen 3 to be detected, and a part of light is emitted from an upper surface of the mirror 2 after passing through the mirror 2.

The cover plate 32 and the functional sheet 31 of the touch screen 3 to be detected are attached by optical cement, in this specific embodiment, the cover plate 32 and the functional sheet 31 of the touch screen 3 to be detected are attached by SCA optical cement 33, of course, in some embodiments, the cover plate 32 and the functional sheet 31 of the touch screen 3 to be detected may also be attached by other optical cement, and specifically, reference may be made to the prior art, which is not described in detail herein.

Preferably, in this embodiment, the detection light source 1 and the touch screen 3 to be detected are arranged in parallel, so as to improve the uniformity of illumination in each area of the touch screen 3 to be detected, and further improve the effectiveness of detection.

In this embodiment, the detecting light source 1 is preferably implemented by using the display screen 11, which is easy to implement and low in cost, but not limited thereto, and in some embodiments, the detecting light source 1 may also be implemented by using other existing surface light sources, such as an LED surface light source.

Preferably, in this embodiment, the display screen 11 is implemented by using an LCD display, which is easy to implement, low in cost, and long in service life, but not limited thereto, and in some embodiments, the display screen 11 may also be implemented by using other displays, such as an OLED display.

Preferably, in this embodiment, the display screen 11 is a display screen displaying a white image, so as to further improve the detection accuracy, but the detection accuracy is not limited thereto, and in some embodiments, the display screen 11 may also be a display screen displaying other monochromatic images.

In this embodiment, the brightness of the display screen 11 is preferably greater than or equal to 800cd/m²And the detection accuracy is further improved.

Preferably, in this embodiment, a gap between the display screen 11 and the touch screen 3 to be detected is less than or equal to 1mm, so that the brightness requirement of the display screen 11 can be reduced. Therefore, the requirements on the performance of the display screen 11 are reduced, energy consumption and cost are saved, interference of external light can be reduced, and the inspection effect is ensured.

In this embodiment, the light transmittance of the mirror 2 is preferably 30% to 70%, and the reflectance is preferably 70% to 30%, so as to further ensure the detection effectiveness, and more preferably, the light transmittance of the mirror 2 is 50%.

Preferably, in this embodiment, the gap between the mirror 2 and the touch screen 3 to be detected is less than or equal to 2mm, so as to reduce the brightness requirement of the display screen 11. Therefore, the requirements on the performance of the display screen 11 are reduced, energy consumption and cost are saved, interference of external light can be reduced, and the inspection effect is ensured.

Furthermore, in this embodiment, the brightness of the light emitted from the upper surface of the mirror 2 is not less than 250cd/m²To improve the detection effect.

In this embodiment, the mirror 2 may be formed by using a transparent glass plate as a substrate and plating a semi-reflective and semi-transparent film on a lower surface of the transparent glass plate, but the utility model is not limited thereto, and in some embodiments, the mirror 2 may also be implemented by using other existing semi-reflective and semi-transparent mirrors.

Further, in this specific embodiment, the mirror further includes a first support frame 4 and a second support frame 5, the first support frame 4 is used to be disposed between the display screen 11 and the touch screen 3 to be detected, so as to dispose the touch screen 3 to be detected on the display screen 11, the second support frame 5 is used to be disposed between the mirror 2 and the touch screen 3 to be detected, so as to dispose the mirror 2 on the touch screen 3 to be detected, and the mirror is simple in structure, easy to implement, simple and convenient to use, and low in cost. While not limited thereto, in some embodiments, the display screen 11, the touch screen 3 to be detected, and the mirror 2 may also be fixed by other fixing mechanisms, such as a supporting block, a fixing frame, and the like.

In this embodiment, the display screen 11, the touch screen 3 to be detected, and the mirror 2 are all in a square structure, and correspondingly, the first support frame 4 and the second support frame 5 are also in a square structure, and the frame edges of the first support frame 4 and the second support frame 5 are both located in the edge area of the touch screen 3 to be detected.

During the inspection, the touch screen 3 to be detected is arranged on the display screen 11 through the first supporting frame 4, the mirror 2 is arranged on the touch screen 3 to be detected through the second supporting frame 5, then the display screen 11 is opened, and the human eyes are inclined (the visual angle of the human eyes and the included angle of the plane of the mirror 2 are within 45 degrees) to observe the picture of the display screen 11 through the mirror 2. If the display picture is not pure white, but appears a wavy or cloudy image, the SCA optical cement at the position is abnormal, and a wrinkle phenomenon exists.

While the utility model has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the utility model as defined by the appended claims.

Claims

1. The utility model provides a detect device of touch-sensitive screen glue laminating performance which characterized in that: the detection light source is a surface light source and is arranged below a functional sheet of the touch screen to be detected, the mirror is arranged above a cover plate of the touch screen to be detected and is parallel to the cover plate, part of light emitted by the detection light source is reflected by the mirror after penetrating through the touch screen to be detected, and part of light penetrates through the mirror and is emitted out of the upper surface of the mirror.

2. The apparatus for detecting the adhesive bonding performance of the touch screen according to claim 1, wherein: the detection light source is realized by adopting a display screen.

3. The apparatus for detecting the adhesive bonding performance of the touch screen according to claim 2, wherein: the display screen is used for displaying a white picture.

4. The apparatus for detecting the adhesive bonding performance of the touch screen according to claim 2, wherein: the brightness of the display screen is more than or equal to 800cd/m²。

5. The apparatus for detecting the adhesive bonding performance of the touch screen according to claim 1, wherein: the gap between the detection light source and the touch screen to be detected is less than or equal to 1 mm.

6. The apparatus for detecting the adhesive bonding performance of the touch screen according to claim 1, wherein: the light transmittance of the mirror is 30% -70%, and the reflectivity of the mirror is 70% -30%.

7. The apparatus for detecting the adhesive bonding performance of the touch screen according to claim 6, wherein: the light transmittance of the mirror was 50%.

8. The apparatus for detecting the adhesive bonding performance of the touch screen according to claim 6, wherein: the gap between the mirror and the touch screen to be detected is less than or equal to 2 mm.

9. The apparatus for detecting the adhesive bonding performance of the touch screen according to claim 6, wherein: the brightness of the light emitted from the upper surface of the mirror is not less than 250cd/m²。

10. The apparatus for detecting the adhesive bonding performance of the touch screen according to claim 1, wherein: the mirror is characterized by further comprising a first supporting frame and a second supporting frame, wherein the first supporting frame is used for being arranged between the detection light source and the touch screen to be detected, and the second supporting frame is used for being arranged between the mirror and the touch screen to be detected.