公开(公告)号：US20220163188A1

公开(公告)日：2022-05-26

申请号：US17159477

申请日：2021-01-27

Applicant: Primax Electronics Ltd.

Inventor： Wei-Chiang Huang ,  Ming-Hui Yeh ,  Wei-Ping Chan

IPC: F21V11/14 ,  F21V8/00 ,  F21V29/50 ,  G06F3/02

Abstract: A keyboard device and a backlight module of the keyboard device are provided. The keyboard device includes a casing, the backlight module, a keyboard module and an expansion module. The backlight module includes a main body region and an extension region. The main body region and the extension region are connected with each other. A first light beam is outputted from the main body region to plural keys of the keyboard device. A second light beam is outputted from the extension region to the expansion module.

公开(公告)号：US20200004130A1

公开(公告)日：2020-01-02

申请号：US16143444

申请日：2018-09-26

Applicant: Primax Electronics Ltd.

Inventor： Wei-Chiang Huang ,  Chung-Yuan Chen ,  Chuan-Tai Hsiao ,  Ming-Hui Yeh

IPC: G03B29/00 ,  G06F1/16 ,  G03B21/14

Abstract: A computing device and an input device are provided. Each of the computing device and the input device includes a control unit, a light source, a projection plate and a casing. The control unit, the light source and the projection plate are accommodated within the casing. The light source emits light beams. The projection plate includes a pattern. After the light beams pass through the projection plate, the light beams are projected outside the casing and an image corresponding to the pattern of the projection plate is formed on a projection surface that is located outside the casing. Since the projection plate is cheap and small, the fabricating cost of the computing device or the input device is reduced and the purpose of developing the computing device or the input device toward light weightiness, slimness and small size is achievable.