Heater made from screen mesh thin film and manufacturing method thereof

Abstract

The invention discloses a heater made from a screen mesh thin film and a manufacturing method of the heater. The heater comprises an electrode strip, a conductive clad layer and a substrate material. The substrate material is coated with the conductive clad layer. The electrode strip is connected to the conductive clad layer. A plurality of openings are etched into the conductive clad layer so that the screen mesh thin film can be formed on the conductive clad layer, wherein the wire diameter of the screen mesh thin film ranges from 5 micrometers to 30 micrometers, and the aperture ratio of the screen mesh thin film is above 80%. The manufacturing method of the heater comprises the following steps that the substrate material is coated with the conductive clad layer, and then the multiple openings are formed in the conductive clad layer in an exposure etching mode so that the screen mesh thin film can be formed on the conductive clad layer. According to the heater made from the screen mesh thin film, the surface resistance distribution of a conductive surface of the heater is controlled through adjustment of the screen mesh thin film, so that the heating uniformity of a liquid crystal display screen at a low temperature is realized; on one hand, the usage of an auxiliary heating membrane is avoided; on the other end, the solution also can well solve the problem of temperature maldistribution for a liquid crystal display screen with a large area.

Description

technical field [0001] The invention relates to a heater for a liquid crystal display screen, in particular to a heater made of a silk screen film and a manufacturing method thereof. Background technique [0002] Liquid crystal materials have the characteristics of optical anisotropy and electrical anisotropy. Under the control of an applied voltage, the liquid crystal molecules will rotate, so that the refractive index or transmittance of the liquid crystal will also change accordingly. The liquid crystal display is to control the rotation of liquid crystal molecules by applying an external voltage, thereby controlling the light transmittance of the liquid crystal screen to realize the information display function. [0003] The liquid crystal material is an organic material, and its physical properties change with the temperature. The viscosity of the liquid crystal material increases at low temperature, the voltage threshold for driving the liquid crystal molecules to rota...

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Problems solved by technology

However, on the one hand, this solution will increase the process difficulty and cost of the entire display device. On the other hand, for the larger liquid crystal screen 3', this solution cannot well solve the problem of uneven temperature distribution.

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