On-cell touch panel and AHVA (Advanced Hyper Viewing Angle) display thereof

Abstract

The invention provides an on-cell touch panel and an AHVA (Advanced Hyper Viewing Angle) display thereof. The on-cell touch panel comprises a touch panel and a flexible printing circuit, wherein the touch panel comprises multiple first electrodes extending horizontally and multiple second electrodes extending vertically; the flexible printing circuit comprises a fan-out area which is provided with a first electrode, an insulating layer located above the first electrode, and a second electrode located above the insulating layer. A through hole is formed through laser welding, and the first electrode and the second electrode are electrically coupled by the through hole. Compared with the prior art, the on-cell touch panel is provide with a stacked structure of the first electrode, the insulating layer and the second electrode in the fan-out area, the first electrode and the second electrode are electrically coupled by the through hole formed by laser welding, when an ITO (Indium Tin Oxide) sensor has an open-circuit fault and conductive adhesive is adopted for coating, the conductive adhesive cannot be directly fitted on the first electrode of the fan-out area, the warping phenomenon of the coated surface cannot occur and a condition that a display picture has the green phenomenon is avoided.

Description

technical field [0001] The invention relates to liquid crystal display technology and touch technology, in particular to an add-on touch panel and an AHVA (Advanced Hyper View Angle, ultra-large viewing angle and high-definition) display. Background technique [0002] In the prior art, the research on the integration of the functions of the touch panel and the liquid crystal panel is becoming more and more popular. Generally speaking, the current touch panels in the market can be mainly divided into two types: on-cell and in-cell. For the plug-in touch panel, the touch screen is embedded between the color filter substrate and the upper polarizer of the liquid crystal panel, that is, the touch sensor is arranged on the liquid crystal panel. For the in-cell touch panel, it embeds the touch panel function into the liquid crystal pixels, that is, embeds the touch sensing function inside the liquid crystal panel, which can make the panel screen lighter and thinner. [0003] On ...

AI Technical Summary

Problems solved by technology

However, when the ITO sensor on the touch panel fails (for example, the sensing line is disconnected), if it is to be shipped normally, the ITO traces at the disconnected position must be connected together with conductive adhesive

Although the conductive adhesive can repair the open circuit of the sensing line, it is also prone to warping of the adhesive surface, making some ITO sensors in a floating state

The suspension of this ITO sensor will cause the display screen to turn green, which will not only affect the shipment of the product, but also reduce the performance of the product

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