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Capacitive touch screen and gluing method thereof

A capacitive touch screen and bonding technology, applied in the direction of electrical digital data processing, instruments, data processing input/output process, etc., can solve the problem of high defects, achieve the effect of improving production yield, facilitating deformation, and improving bubble problems

Active Publication Date: 2017-11-10
CHANGSHA YUSHUN DISPLAY TECH +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, after improvement by the above methods, the defect rate is still relatively high.

Method used

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  • Capacitive touch screen and gluing method thereof
  • Capacitive touch screen and gluing method thereof
  • Capacitive touch screen and gluing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Embodiment 1 of the present invention describes a capacitive touch screen bonding method, the method comprising:

[0037] Step 1. Apply an OCA optical adhesive layer 21 on the surface of the film sensor 2 . The OCA optical adhesive layer 21 is pasted on the surface of the film material sensor 2 to facilitate bonding of the film material sensor 2 and the cover glass 1 in subsequent steps. And OCA optical glue has the characteristics of colorless and transparent, light transmittance over 90%, and good bonding strength. Therefore, using OCA optical glue can not only make the film material sensor 2 and the protective glass 1 bond firmly, but also will not affect the touch screen. performance without affecting its display.

[0038] Step 2. Open a hole 5 in the thickness direction of the film sensor 2 with the OCA optical adhesive layer 21 attached in step 1, so that one end of the through hole 5 is in the ink level difference area 3 . Bubbles will inevitably occur when the...

Embodiment 2

[0052] Embodiment 2 of the present invention describes a capacitive touch screen, which includes:

[0053] The lower surface of the OCA optical adhesive layer 21 is attached to the film sensor 2 , and the upper surface of the OCA optical adhesive layer 21 is attached to the lower surface of the ink layer 11 on the back of the protective glass. The film sensor 2 realizes the touch control of the touch display product, and the OCA optical adhesive layer 21 is used to bond the film sensor 2 and the ink layer 11 on the back of the protective glass, and the ink layer 11 on the back of the protective glass can be used to display the product. Various colors required.

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Abstract

The invention discloses a capacitive touch screen and a gluing method thereof. The method comprises the following steps: Step 1, gluing an OCA (optical clear adhesive) layer on the surface of a film material sensor; Step 2, punching a through hole in the thickness direction of the film material sensor glued with the OCA layer in Step 1, so that one end of the through hole is positioned in a segment gap area of printing ink; Step 3, cutting the film material sensor in Step 2 with a film cutter according to the specification; Step 4, gluing the cut film material sensor and protective glass; Step 5, defoaming the film material sensor and the protective glass that are glued with each other. The method has the beneficial effects that after the through hole is additionally formed in the film material sensor, on one hand, the segment gap of the printing ink of a film material becomes softer, so as to facilitate deformation, so that the segment gap is easily filled with an OCA; on the other hand, air can be discharged out of the through hole during gluing, so that the problem of bubbles at the position of the segment gap of the printing ink can be well solved. Therefore, the yield rate of products can be greatly improved.

Description

technical field [0001] The invention relates to the technical field of touch screen production, in particular to a capacitive touch screen and a bonding method thereof. Background technique [0002] In the entire capacitive touch screen manufacturing process, the main adverse phenomena in the back-end lamination process (the lamination of the protective glass and the sensing layer) are: air bubbles, dirt, foreign objects, offset, etc. Bubbles are difficult to solve due to ink level difference (10-60μm) on the four sides of the protective glass, especially now that the color of the protective glass is required to be diversified, such as white, gold, blue, pink, etc. The ink thickness of the protective glass is thicker, which makes it difficult to eliminate air bubbles. The general improvement methods for this poor air bubble mainly include: first, increase the vacuum degree of the bonding cavity (increase the efficiency of the vacuum pump, or improve the sealing of the cavit...

Claims

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Application Information

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IPC IPC(8): G06F3/044
CPCG06F3/044G06F2203/04103
Inventor 黄效牛左洪王彬周妮
Owner CHANGSHA YUSHUN DISPLAY TECH
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