Touch panel and touch display module

Abstract

The invention relates to a touch panel. The touch panel comprises a first substrate and a first silver nanowire electrode layer, wherein the first silver nanowire electrode layer is formed on a surface of the first substrate and comprises a plurality of first electrode pads and a plurality of first connecting wires conductively connected with the electrode pads; each first electrode pad is a conductive grid pattern; two first non conductive regions are formed on two sides of a connection direction of the two adjacent first electrode pads; and a plurality of wire segments insulated from the first electrode pads are arranged in the first non conductive regions. The invention furthermore provides a touch display module. The touch display module comprises the touch panel and a display unit, wherein the display unit comprises a display substrate, a liquid crystal layer and a polarizer; and the first silver nanowire electrode layer is arranged on any one of the upper surface of the display substrate, the lower surface of the display substrate, the upper surface of the polarizer and the lower surface of the polarizer.

Description

【Technical field】 [0001] The invention relates to a touch panel, in particular to a touch panel and a touch display module equipped with a low-impedance nano-silver wire grid conductive film and having good visual effects. 【Background technique】 [0002] Touch devices are gradually favored by the electronic communication industry due to their advantages of easy operation, good imaging effect, and diversified functions, and are widely used in smart phones, information system equipment, home appliances, communication equipment, personal portable devices and other products. [0003] Taking traditional smart phones as an example, the material used for touch electrodes in conventional capacitive touch panels is usually indium tin oxide (ITO for short). However, with the further development of touch technology, users have put forward higher requirements for touch panels. As a traditional touch material, ITO has shown the following shortcomings: [0004] 1. The size of the touch p...

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Problems solved by technology

[0004] 1. The size of the touch panel is gradually enlarged (such as a touch screen with a size above 42 or 55), especially when it is applied to a panel above 15 inches, the defects of ITO are becoming more and more prominent, and the most obvious defect is ITO The surface resistance is too large, which seriously affects the touch sensitivity of the touch panel;

[0005] 2. In terms of manufacturing methods, in order to produce a touch electrode pattern that meets the specifications, ITO needs to use a high-level yellow light process. The equipment cost of the high-level yellow light process is high and the manufacturing process is complicated, which makes the manufacturing cost of the touch panel ineffective. This is contrary to the development trend of the continuous low price of electronic products, and naturally cannot be applied to the development trend of continuous low price of electronic products; further, the general ITO process requires a vacuum chamber, a higher deposition temperature and / or High annealing temperature to obtain high conductivity, which makes the overall production cost of ITO very expensive;

[0006] 3. The ITO film is very fragile, and it is very easy to be damaged even when it is bent under a small physical stress. Therefore, under the wave of emerging product markets where wearable devices are gradually rising, ITO materials as conductive materials can no longer meet market demand. gradually eliminated

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