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A bonding process for touch screen

A touch screen and process technology, applied in the input/output process of data processing, lamination devices, instruments, etc., can solve the problems of affecting the display effect of the display screen, uneven force on the OCA adhesive layer, and local refractive index changes. To achieve the effect of avoiding changes in the refractive index or generating bubbles, improving the display effect, and improving the pass rate

Active Publication Date: 2016-02-10
湖北仁齐科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, OCA glue is used for laminating production between the transparent cover, the sensing substrate and the display screen. In many enterprises, manual lamination is used for assembly, which will cause uneven stress on the OCA glue layer and local changes in the refractive index. Or produce bubbles, affect the display effect of the display screen, high product scrap rate, low production efficiency

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] The lamination process of the touch screen in this embodiment includes the following process steps under the condition that matching OCA optical glue, transparent surface cover, sensing substrate and display screen are prepared:

[0017] a. Use OCA optical adhesive on both sides to attach the transparent surface cover to the sensing substrate without pressure. When using OCA optical adhesive, tear off the release film on one side, and tear off the side of the release film for initial lamination and transparency without pressure. Surface cover or sensing substrate, and then tear off the release film on the other side of the OCA optical adhesive, and preliminarily attach the unconnected sensing substrate or transparent surface cover without pressure (the following steps are similar to the use of OCA optical adhesive in the following examples), In the present invention, the pressure-free preliminary bonding is not absolute pressure-free contact, but the two are naturally co...

Embodiment 2

[0023] The lamination process of the touch screen in this embodiment includes the following process steps under the condition that matching OCA optical glue, transparent surface cover, sensing substrate and display screen are prepared:

[0024] a. Preliminary lamination of the sensing substrate and the display screen without pressure through OCA optical glue on both sides;

[0025] b. On the side of the sensing substrate, use another OCA optical adhesive to preliminarily attach the transparent cover without pressure to form an initial lamination screen;

[0026] c. Neatly stack 5 pieces of initial bonding screens together, and place them on the support pallet of the bonding room of the bonding machine;

[0027] d. Vacuumize the laminating chamber of the laminating machine, start the upper pressing plate to press the initial laminating screen on the support plate, under the pressure of vacuum and upper pressing plate, the induction substrate and the transparent cover of each in...

Embodiment 3

[0029] a. Preliminary lamination of the transparent surface cover and the sensing substrate without pressure through OCA optical glue on both sides,

[0030] b. On the side of the sensing substrate, use another OCA optical adhesive to preliminarily attach the display screen without pressure to form an initial lamination screen;

[0031] c. Neatly stack the 3 pieces of initial bonding screens together, and place them on the supporting pallet of the bonding room of the bonding machine;

[0032] d. Vacuumize the laminating chamber of the laminating machine, start the upper pressing plate to press the initial laminating screen on the support plate, under the pressure of vacuum and upper pressing plate, the induction substrate and the transparent cover of each initial laminating screen The bonding is tight, and the bonding process of the display screen of the present invention is completed.

[0033] The bonding process of the touch screen of the present invention, the transparent ...

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Abstract

The invention relates to the technical field of production technology of electronic products, particularly relates to a laminating technology of a touch screen. The technology is characterized by laminating a transparent surface cover, a sensitive base panel and a display screen together by an OCA optical cement to form an initial joint surface, overlapping more than two initial joint surfaces, putting in a laminating chamber of a laminating machine to conduct vacuum pumping, and activating a top board to press the overlapped initial joint surfaces, wherein under the pressure of vacuum and the top board, the transparent surface cover, sensitive base panel and display screen of each overlapped initial joint surface are laminated tightly. According to the invention, under the dual effects of vacuum and the top board, the stress is uniform, and the laminating is tight, the local refractive index change or air bubble generation caused by nonuniform stress of manual laminating and assembling are effectively prevented, the display effect of the display screen is improved; in addition, by overlapping more than two initial joint surfaces in the laminating machine, the laminating of a plurality of products can be realized at a time, thus the production efficiency is raised.

Description

Technical field: [0001] The invention relates to the technical field of electronic product production technology, in particular to a bonding process of a touch screen. Background technique: [0002] With the rapid development of electronic technology, touch screens are used more and more widely, especially in mobile phones. As a kind of the most friendly man-machine interface, the application on the mobile phone will also become more and more popular. In addition to mobile phones, the application of touch screens in the field of automotive electronics is also becoming more and more extensive. With the rapid development of the automobile industry, people have higher and higher requirements for car entertainment information systems, and car navigation systems and in-car audio-visual entertainment systems have begun to be popularized. The touchscreen market for portable navigation devices and other electronic devices will reach $600 million in 2012. The retail industry is al...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B37/10G06F3/041
Inventor 周智强谢小恒
Owner 湖北仁齐科技有限公司