A distance sensor component and mobile communication device

Abstract

The invention discloses a distance sensor assembly and a mobile communication device. The distance sensor assembly includes a light-transmitting element, a distance sensor and a light-shielding element. The distance sensor is arranged on one side of the light-transmitting element and is spaced apart from the light-transmitting element, and includes a light emitting element and a light sensing element. The first part of light emitted by the light-emitting element is transmitted through the light-transmitting element, and after being reflected by an object on the other side of the light-transmitting element, is transmitted through the light-transmitting element again and irradiates on the photosensitive element. The light shielding element is at least partially disposed between the light emitting element and the photosensitive element. The light-shielding element is provided with a cutout to allow the second part of light emitted by the light-emitting element to be reflected by the outer surface of the light-transmitting element and irradiate on the photosensitive element, and to excite the photosensitive element together with the first part of light. Through the above method, the distance sensor component of the present invention can effectively excite the photosensitive element, thereby solving the problem of black hair and avoiding the distance limitation between the light-transmitting element and the distance sensor.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a distance sensor component and a mobile communication device. Background technique [0002] With the development of technology and the advent of the smart phone era, capacitive touch screens are more and more commonly used in smart phones, so the distance sensor has gradually become the standard configuration of smart phones, which controls the capacitive touch screen by judging the distance between the face and the capacitive touch screen The opening and closing of the capacitive touch screen can avoid the user's misoperation on the capacitive touch screen when answering the phone. [0003] In the distance sensor in the prior art, part of the detection light emitted by the light-emitting element is transmitted through the capacitive touch screen, and after being reflected by the object, it is transmitted through the capacitive touch screen again and irradiated on the phot...

AI Technical Summary

Problems solved by technology

[0004] For women with long hair, when they answer the phone, it is often the hair that touches the capacitive touch screen instead of the face, which can easily lead to black hair problems

Specifically, the detection light transmitted through the capacitive touch screen is often blocked by the hair. Since the hair is a cylinder with a small reflection area, the detection light often diverges in different directions after being reflected by the hair, which easily makes the detection light inaccurate. Irradiated on the photosensitive element, resulting in insufficient detection light energy to excite the photosensitive element

In particular, black hair is less likely to reflect detection light, making the distance sensor more likely to fail

[0005] In one solution, the detection light multiple times reflected by the inner surfaces on both sides of the capacitive touch screen and the detection light transmitted by the capacitive touch screen are used to jointly excite the photosensitive element, but this solution needs to separate the distance sensor from the capacitive touch screen. The distance is set very close, generally less than 0.5mm, while the distance between the capacitive touch screen and the main circuit board is relatively far, generally around 2mm, so it is necessary to increase the distance sensor by adding flexible circuit boards and connectors, so that not only Increased assembly difficulty and cost while reducing system reliability

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