Portable electronic device and key structure thereof

Abstract

The invention provides a portable electronic device and a key structure thereof, wherein the key structure is applied to the electronic device. The key structure comprises at least one light source, a light guide plate and a key part, each light source has a light-emitting angle range; the light guide plate comprises an opening; the opening is used for accommodating the at least one light source;the key part is arranged above the light guide plate, and a space is reserved between the key part and the light guide plate; the key part comprises a reflecting layer and a transparent part; the reflecting layer is arranged at one side, facing the at least light source, of the key part; at least one part of the reflecting layer is positioned within the light-emitting angle range; the transparentpart is arranged corresponding to the light guide plate; light rays emitted by at least one light source are reflected to the light guide plate by virtue of the reflecting layer; the light rays emitted by the light guide plate penetrate through the transparent part to cause the key part to present a lighting effect; the key part provided by the invention can present a uniform lighting effect corresponding to a key pattern, thereby being convenient for a user to indentify and operate.

Description

technical field [0001] The invention relates to a portable electronic device and its key structure, in particular to a key structure applied to the portable electronic device to form a uniform luminous effect. Background technique [0002] Generally, electronic devices are provided with function keys for users to input operation commands to execute corresponding functions. In order to allow users to clearly identify the corresponding function of the function key or confirm its position, the design will improve the structure of the key itself, so that the appearance of the key or the part of the key icon has a luminous effect, so that the user can use it even in the dark The function keys can also be quickly found and operated in the environment. [0003] Taking the common touch-sensitive mobile phone or portable computer as an example, in order to illuminate the part where the button needs to emit light and reduce the overall thickness of the electronic device, most of the ...

AI Technical Summary

Problems solved by technology

However, with regard to the design of the known button structure, since the side-mounted LED 210 tends to scatter the light when it emits light, and the light irradiated to the light guide plate 220 due to the difference in distance, when the area occupied by the button pattern 230 is too large (For example, the ring pattern part around the button pattern 230) will lead to the problem of uneven brightness of the light guide plate 220, and the ring pattern around the button pattern 230 will show uneven brightness, which will affect the user's vision. look and feel

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