Backlight module and illuminated touch device thereof

Abstract

The invention provides a backlight module and an illuminated touch device thereof. The illuminated touch device includes a circuit board, a backlight module, and a cover plate. The backlight module includes a light guide plate, a light source assembly, and a light-shielding bar. The light guide plate includes a first plate body and a second plate body fitted with each other. The first plate body has a plurality of first microstructures, and the second plate body has a plurality of second microstructures. The light-shielding bar is at an outer periphery of the light guide plate and extends at an intersection between the first plate body and the second plate body, for blocking penetration of light between the first plate body and the second plate body. The cover plate includes first transparent regions and second transparent regions respectively corresponding to the first microstructures and the second microstructures.

Description

technical field [0001] The invention relates to a backlight module and a light-emitting touch device thereof, in particular to a backlight module suitable for partition display and a light-emitting touch device thereof. Background technique [0002] Traditional electronic products such as notebook computers usually have physical buttons and touch panels. With the development of thinner portable electronic products, the available space on the body is relatively reduced. Therefore, thin and light notebook computers may be on the touch panel. Displaying virtual keys and visual images saves physical key space and improves user convenience, that is, displays virtual keys and visual images on the touch panel through a backlight module for user operations. [0003] In a specific application scenario, the virtual buttons and visual images displayed by the light-emitting touch device may display, for example but not limited to, a computer function menu with segmented control, and dis...

AI Technical Summary

Problems solved by technology

[0004] However, the inventors have realized that a general light-emitting touch device only lights up all the light-emitting elements or extinguishes all the light-emitting elements, such as but not limited to: backlight lighting or side-lighting lighting, so as to light up the entire area of ​​the touch panel, However, it is still not possible to display virtual buttons and visual images in partitions

Even though each light-emitting element can be independently controlled to light up separately, there are still problems of adjacent light interference and afterimages, which cause afterimages to mislead users

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