Capacitance touch screen and preparation method thereof

The technology of a capacitive touch screen and a manufacturing method, which are applied in electrical digital data processing, ion implantation plating, coating and other directions, can solve the problems of low light transmittance and large thickness, and achieve enhanced light transmittance and thin thickness. , the effect of thickness reduction

Inactive Publication Date: 2009-11-11
深圳市中显微电子有限公司
View PDF0 Cites 28 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a capacitive touch screen, which aims to solve the defects of th

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Capacitance touch screen and preparation method thereof
  • Capacitance touch screen and preparation method thereof
  • Capacitance touch screen and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] In the first embodiment of the present invention, the first layer of electrode layer ITO, that is, indium tin oxide (the same below), is sputtered on one side of the substrate 16, and the required ITO pattern 31 is etched out, such as image 3 As shown, then the upper insulating layer 14 is sputtered, and then the second layer of ITO is sputtered, and the required ITO pattern 32 is etched out, as Figure 4 As shown, a layer of transparent liquid insulating layer is prepared by known methods such as offset printing and screen printing, and after the liquid insulating layer is solidified, the transparent insulating layer 18 is formed to obtain the required touch screen. Such as Figure 5 shown.

[0041] The main component of the aforementioned material for preparing the transparent insulating layer 18 is SiO 2 Specifically, you can choose to choose the manufacturer as: Nissan Chemical Industries Co., Ltd. (English name: NISSAN chemical industries, Ltd.), the specific mo...

Embodiment 3

[0048] In the third embodiment of the present invention, the first layer of ITO is sputtered on one side of the substrate, and the required ITO pattern 31 is etched out, such as Figure 11 shown, or Figure 12 As shown, a layer of transparent liquid insulating layer is prepared by offset printing or screen printing, and after the liquid insulating layer is solidified, the transparent insulating layer 18 is formed to obtain the required touch screen. Such as Figure 13 shown.

Embodiment 4

[0050] In the fourth embodiment of the present invention, the first layer of ITO is sputtered on one side of the substrate, and the required ITO pattern 31 is etched out, such as image 3 As shown, then the upper insulating layer is sputtered, and then the second layer of ITO (indium tin oxide) is sputtered, and the required ITO pattern 32 is etched out, such as Figure 4 As shown, sputter a layer of metal electrodes (such as chromium or aluminum or molybdenum, etc.), and etch a metal wiring pattern 35 around it, such as Figure 14 As shown, a layer of transparent liquid insulating layer is prepared by offset printing or screen printing, and after the liquid insulating layer is solidified, the transparent insulating layer 18 is formed, so as to obtain the required touch screen, such as Figure 15 As shown, 35 is the metal wiring, 13 is the second ITO electrode layer, 15 is the first ITO electrode layer, 14 is the insulating layer between the two ITO layers, and 16 is the subst...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention provides a capacitance touch screen and preparation method thereof, wherein the capacitance touch screen comprises a transparent baseplate provided with an electrode layer; the upper surface of the electrode layer of the baseplate is also provided with a transparent insulating layer prepared by the mode of offset printing or screen painting; the thickness of the insulating layer is preferably to be 50-6000; the refractive index thereof is preferably controlled between 1.1 and 2.8; the preparation method thereof comprises the steps of: preparing the electrode layer of each grade on the transparent baseplate in the mode of sputtering, and realizing electric connection of the induction blocks in each electrode layer in sequence according to the use requirement, then preparing a transparent liquid insulating layer on the upper surface of the electrode layer through the mode of offset printing or screen painting and then solidifying to form the transparent insulating layer. The invention does not need to use adhesives or glue to stick the upper baseplate and the lower baseplate in the prior art, can not have the phenomena of air bladder remaining and glue spilling, improve the production efficiency, greatly reduce the thickness of the touch screen and enhance the light transmission rate.

Description

technical field [0001] The invention relates to a structural improvement of a touch screen, in particular to a capacitive touch screen, and also relates to a method for manufacturing the capacitive touch screen. Background technique [0002] The touch screen can be used as an interface tool for operating electronic devices through the display screen, allowing users to input information directly on the surface of the display device with a touch screen by touching or handwriting, which is more friendly and convenient than input devices such as mice and keyboards. Therefore, it is more and more widely used in various portable devices, such as mobile phones, PDAs and so on. For example, a user may input desired information on a display device that is displaying an image and is combined with a touch screen. [0003] According to the type of contact object used (such as fingers, pens, etc.) and the way of confirming the contact (the position where the contact object operates the ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G06F3/044C23C14/34
Inventor 姚伏恒李坤刘龙
Owner 深圳市中显微电子有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap