| CPC H04M 1/0268 (2013.01) [H04M 1/0235 (2013.01); H04M 1/0264 (2013.01); G06F 1/1624 (2013.01); G06F 1/1652 (2013.01); G06F 1/1686 (2013.01)] | 18 Claims | 

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               1. A display device, comprising: 
            a middle frame, the middle frame comprising a first top portion, a first bottom portion opposite to the first top portion, and a side portion connected to the first top portion and the first bottom portion, the middle frame comprising a first accommodating space penetrating the first top portion; 
                a display panel slidably assembled in the first accommodating space; 
                a light sensor assembled in the first accommodating space and located under the display panel; 
                a sliding mechanism comprising a sliding key slidably assembled at the side portion of the middle frame, the sliding key passing through the side portion of the middle frame and connected to the display panel, the sliding key driving the display panel to slide relative to the middle frame to control the display panel to block or expose the light sensor; and 
                a positioning mechanism, the positioning mechanism comprising a positioning member, the positioning member comprising a positioning member movably assembled in the middle frame; 
                wherein the sliding mechanism further comprises a sliding push plate, the sliding push plate is connected to the display panel, the sliding push plate comprises an extending plate adjacent to the sliding key, a positioning hole is disposed in the extending plate, and the sliding key passes through the side portion of the middle frame and is connected to the extending plate, 
                wherein when the display panel exposes the light sensor, the positioning member extends into the positioning hole; and when the display panel blocks the light sensor, the positioning member is separated from the positioning hole. 
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