Electromagnetic handwriting liquid crystal display device

Abstract

The invention provides an electromagnetic handwriting liquid crystal display device. An upper iron frame, a lower iron frame and a rubber frame in the backlight module of the liquid crystal display device are removed, and an upper cover and a matched bracket of the liquid crystal display device are used for fixing an electromagnetic antenna plate, a light panel, an optical diaphragm group and a liquid crystal panel. An electromagnetic control panel is arranged on the back surface of the electromagnetic antenna plate, or the antenna plate is arranged in the control panel to form an integral body together with the control panel. A magnetic shielding material is arranged behind the antenna plate. The electromagnetic handwriting liquid crystal display device omits the structures such as the upper iron frame, the lower iron frame and the rubber frame which are in need of close fit, thereby being convenient to install and reducing the weight of the liquid crystal display device; and the bracket is used for increasing the strength of the overall structure, thereby simplifying the manufacturing technique.

Description

technical field [0001] The invention belongs to the field of computer peripherals, and in particular relates to a liquid crystal display device. Background technique [0002] Liquid crystal displays have the characteristics of low electromagnetic radiation, low power consumption, low heat generation, and thinness. They have replaced CRT (cathode ray tube) displays and become the mainstream displays on the market. A conventional liquid crystal display consists of a housing, an LCM (LCD Module), an AD board, and various cables. LCM is an LCD display module, which consists of an upper iron frame, a liquid crystal display panel, a backlight module and a lower iron frame. [0003] Such as figure 1 Shown is a three-dimensional exploded view of the LCM in the prior art. Wherein 10 is an upper iron frame, and the middle is hollow, so that the liquid crystal panel 11 can display the picture to the user; 12 is an optical film group; 13 is a light guide plate, and the dot matrix of ...

AI Technical Summary

Problems solved by technology

The advantage of this structure is that the existing mold can be fully utilized, and the investment cost is low; the disadvantage is that the lower iron frame needs to be machined, and the structure of the antenna plate is easily restricted by the existing mold structure, resulting in poor corner effects for handwriting input.

In these two methods, the upper and lower iron frames and plastic frames of the backlight part are indispensable, but the plastic frame, upper and lower iron frames need to be precisely matched, the process is complicated, and the installation is inconvenient. Due to the existence of the upper iron frame and the lower iron frame , also increases the weight of the LCD

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