LCD (liquid crystal display) integral touch device with an external copper process

Abstract

The invention relates to an integrated touch device with an external copper process for an LCD liquid crystal display. It includes an upper glass substrate and a sensing pattern layer; the surface of the upper glass substrate is copper plated with a first metal grid conductive layer, the first metal grid conductive layer is coated with an OC insulating layer, and the copper on the OC insulating layer is plated with a second metal grid conductive layer; the first metal grid conductive layer directly forms the first metal grid circuit, and forms the electroplating driving electrode pattern through the driving electrode unit; the second metal grid conductive layer directly forms the second metal grid circuit, and forms the second metal grid circuit directly through the driving electrode unit The sensing electrode unit forms an electroplating sensing electrode pattern; the electroplating driving electrode pattern and the electroplating sensing electrode pattern constitute the distribution of the sensing pattern layer. The present invention can reduce channel impedance, reduce power consumption, and improve transmittance without reducing pitch; in the case of a flexible integrated touch device, it can reduce the change of impedance when bending or stretching.

Description

technical field [0001] The invention relates to an integrated touch device, in particular to an integrated touch device with an external copper process for an LCD liquid crystal display. Background technique [0002] With the development of ultra-thin and large-screen mobile phones, and the demand for touch screens in tablets and ultrabooks, touch screen technology is undergoing rapid evolution, and new technologies are becoming mature. New TOL, mutual-capacity single-layer multi-touch, Oncell / Technologies such as Incell and flexible display will become the trend in the future, and major manufacturers are also investing in the development of reliable Oncecell touch screens. In addition, with the application of TSP technology to flexible display devices, the touch screen panel on the front surface of the display device of the organic light emitting display or liquid crystal display is also increasingly becoming a research direction for display touch. [0003] The existing i...

AI Technical Summary

Problems solved by technology

[0003] The existing integrated touch device requires an ITO-coated metal conductive layer, and the sensing pattern layer is made of an ITO conductive layer to form a mutual capacitance. Due to the high impedance ratio of ITO, the requirements for the driving capability of the IC are also relatively high, and 2-3 driving ICs are used. In order to meet the touch signal processing, the problem is prominent in solving medium and large size touch drives. For example, in the case of flexible integrated touch devices, the impedance of ITO will become larger; increasing the pattern pitch and reducing the channel impedance will cause transmittance decrease, the power consumption will also increase

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