KR101946536B1 - Electronic device - Google Patents

Abstract

An electronic device with infrared temperature sensor is disclosed. The electronic device comprise a sensor glass covering the infrared temperature sensor. According to the present invention, an electronic device comprises: a housing having a front opening; a display device installed to face the inside of the housing; an infrared temperature sensor disposed inside the housing adjacent to the display device and facing the front side; a cover glass coupled to the housing and covering the display device and transparent to visible light band; and a sensor glass which is combined with the cover glass and covers the infrared temperature sensor and is transparent to an infrared wavelength band detected by the infrared temperature sensor, wherein the cover glass and sensor glass are watertightly coupled.

Description

Electronic device

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic device, and more particularly to an electronic device on which an infrared temperature sensor is mounted to measure a temperature of a measured object.

Recent smart electronic devices such as smart phones, tablet computers, and smart watches are evolving to perform complex functions. For example, in recent smart phones, in addition to the functions of a conventional mobile phone such as a call and text message transmission function, a multimedia function including a photograph and video shooting function using a camera, a video playback function, a financial transaction function, and an Internet browsing function Can be performed.

In particular, recently, a healthcare function for measuring and managing the user's health condition, exercise condition, lifestyle, and the like is newly proposed. Specifically, recent smart electronic devices are equipped with a PPG sensor capable of measuring a user's heart rate and oxygen saturation, and an acceleration sensor capable of measuring the number of steps and a user's motion state.

To further enhance this healthcare function, it has been proposed to mount a temperature sensor on the electronic device to measure the temperature of the object to be measured. In Korean Utility Model Registration No. 20-0232607 (registered on May 18, 2001) and Korean Registered Utility Model No. 20-0343789 (registered on Feb. 23, 2004), the contents of the mobile communication terminal equipped with such temperature sensor .

A temperature sensor mounted on an electronic device is mainly proposed as a temperature sensor for detecting temperature by detecting infrared rays. To this end, an infrared ray transmitting window must be provided in an electronic device. Accordingly, there is a demand for a mounting structure and a method of a temperature sensor that can be housed in a slimmed electronic device housing without deteriorating the appearance of the electronic device and capable of measuring an accurate temperature.

Korean Utility Model Registration No. 20-0232607 (registered on May 18, 2001) Korean Registered Utility Model No. 20-0343789 (registered on Feb. 23, 2004)

An object of the present invention is to provide an electronic device in which a sensor glass for precise temperature measurement of a temperature sensor is formed without impairing the appearance.

Another problem to be solved by the present invention is to provide an electronic device having a slim structure as a whole and ensuring the durability of the temperature sensor.

According to an aspect of the present invention, there is provided an electronic device including a housing having a front surface opened, a display device installed to face the inside of the housing, a display device disposed adjacent to the display device, A cover glass coupled to the housing and covering the display device and transparent to a visible light band and a sensor glass coupled to the cover glass and covering the infrared temperature sensor and being transparent to infrared wavelength band sensed by the infrared temperature sensor, And the cover glass and the sensor glass are watertightly coupled.

In one embodiment of the present invention, the cover glass includes an opening, and the sensor glass can be inserted and coupled to the opening.

In one embodiment of the present invention, the infrared temperature sensor has a field of view (FoV) determined by a viewing angle, and the sensor glass may cover a portion including the FoV region.

In one embodiment of the present invention, the cover glass may have a lower light transmission rate than the sensor glass with respect to the infrared wavelength band detected by the infrared temperature sensor.

In one embodiment of the present invention, the cover glass may have a light transmittance lower than the sensor glass by 20% or more with respect to the infrared wavelength band detected by the infrared temperature sensor.

In one embodiment of the present invention, the outer surface of the cover glass and the sensor glass may be continuously formed.

In one embodiment of the present invention, the cover glass and the sensor glass may be bonded by an adhesive resin material.

In one embodiment of the present invention, the infrared temperature sensor can measure temperature by detecting infrared rays having a wavelength band of 5 to 14 μm.

In one embodiment of the present invention, the cover glass may be thicker than the sensor glass.

According to an embodiment of the present invention, the cover glass and the outer surface of the sensor glass are continuously formed, and the cover glass and the groove formed by the inner surface of the sensor glass may be formed inside the housing.

In one embodiment of the present invention, at least a portion of the infrared temperature sensor may be received within the groove.

The electronic device according to an embodiment of the present invention can form a sensor glass for accurate temperature measurement of the temperature sensor without damaging the appearance.

Also, the electronic device according to an embodiment of the present invention may have a slim structure as a whole and durability of the temperature sensor can be assured.

1 is a front view of an electronic device according to an embodiment of the present invention.
2 is a cross-sectional view of the electronic device cut along AA 'in FIG.
4 is a graph of light transmittance according to wavelength of a sensor glass of an electronic device according to an embodiment of the present invention.
3 is a graph of light transmittance according to the wavelength of a cover glass of an electronic device according to an embodiment of the present invention.
Fig. 5 is an enlarged cross-sectional view of a part of Fig. 2. Fig.
6 is an enlarged cross-sectional view of a portion of an electronic device according to another embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In describing the present invention, if it is judged that it is possible to make the gist of the present invention obscure by adding a detailed description of a technique or configuration already known in the field, it is omitted from the detailed description. In addition, terms used in the present specification are terms used to appropriately express the embodiments of the present invention, which may vary depending on the person or custom in the relevant field. Therefore, the definitions of these terms should be based on the contents throughout this specification.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. The singular forms as used herein include plural forms as long as the phrases do not expressly express the opposite meaning thereto. As used herein, the meaning of "comprising" embodies certain features, areas, integers, steps, operations, elements and / or components, And the like.

Hereinafter, an electronic device according to an embodiment of the present invention will be described with reference to FIGS. 1 to 3 attached hereto.

1 is a front view of an electronic device according to an embodiment of the present invention. 2 is a cross-sectional view of the electronic device cut along AA 'in FIG. 3 is an enlarged cross-sectional view of a portion of FIG.

First, in the present invention, an electronic device is a bar-shaped device having a front surface and a rear surface, and a display device is installed to define a portion that the user normally looks at and uses. And the opposite surface opposed to the front surface is defined as a rear surface. According to this definition, the portion shown in Fig. 1 corresponds to the front surface, and the surface located on the left side of the drawing of the front side in Fig. 2 and the rear side corresponds to the side located on the right side of the drawing.

The electronic device in the present invention may be, for example, a smart phone, a tablet computer, a multimedia playback device, a navigation device, a PDA device, or a wearable electronic device. In the accompanying drawings, the electronic device is shown in the form of a smart phone, a tablet computer, or a multimedia player, but the present invention is not limited thereto.

Referring to FIG. 1, various components may be exposed on the front surface of the electronic device. Specifically, a front surface of the electronic device is provided with a display device 200, a front camera 251, a muscle strength sensor 252, an iris camera 253, an iris illumination LED 254, a hydrating speaker 255, A sensor 300 or the like may be installed.

Here, the display device 200 is installed in the central portion of the front surface, and occupies an area occupying more than half of the front surface. The front surface camera 251, the degree of mynority sensor 252, the iris camera 253, the iris illumination LED 254, and the front surface camera 253 are provided on the remaining part of the front surface of the electronic device, A speaker 255 and an infrared temperature sensor 300 are installed. Components other than the display device 200 are typically located on the upper and lower sides of the display of the electronic device.

2, the electronic device of the present invention includes a housing 100, a display device 200, an infrared temperature sensor 300, a cover glass 400, and a sensor glass 500.

The housing 100 constitutes the outermost portion of the electronic device and forms a housing space in which the components are housed. The housing 100 is formed with an open front face. Therefore, the housing 100 may be configured as a side surface and a rear surface connecting the front surface and the rear surface. The side surface and the rear surface may be formed integrally or in a combination of different configurations.

The housing space formed by the housing 100 may be covered with a cover glass 400 to be described later and be confined in a closed space. The display device 200, the front camera 251, the muscle strength sensor 252, the iris camera 253, the iris illumination LED 254, the hydration speaker 255, and the infrared temperature sensor 300 ) Can be accommodated. In addition, the circuit board 261, the battery 262, and various electronic components 263 can be accommodated in the accommodation space.

The display device 200 is installed so as to face the inside of the housing 100. The display device 200 may be a display device 200 such as an LED or an OLED. The display device 200 is positioned on the outermost side of the front surface of the housing 100. [

The infrared temperature sensor 300 is also installed in the housing 100 so as to face the front. The infrared temperature sensor 300 is located adjacent to the display device 200. Although the infrared ray temperature sensor 300 is shown as being located on the upper side of the display device 200 in the accompanying drawings, the infrared ray temperature sensor 300 is not limited thereto. Also, the infrared ray temperature sensor 300 is located at the outermost side of the front surface of the housing 100.

The infrared temperature sensor (300) senses the light corresponding to the infrared wavelength band and measures the temperature of the object to be measured. Specifically, the infrared temperature sensor 300 may be one that detects infrared rays in a wavelength band of 5 mu m to 14 mu m.

The cover glass 400 is coupled with the housing 100 to define a receiving space. Specifically, the cover glass 400 is coupled to the front opening of the housing 100 so as to seal the front surface of the housing 100.

The display device 200 is covered by the cover glass 400. The cover glass 400 may be high tempered glass with high strength and impact to the outside.

The optical characteristics of the cover glass 400 will be described with reference to FIGS. 2 and 3. FIG. 3 is a graph of light transmittance according to the wavelength of a cover glass of an electronic device according to an embodiment of the present invention.

The cover glass 400 is transparent to the visible light band. Specifically, the cover glass 400 has a light transmittance of 80% or more, preferably 90% or more, with respect to the entire band (390 nm to 700 nm) of the visible light ray. Accordingly, the screen image output by the display device 200 is displayed through the cover glass 400 and is externally displayed.

The cover glass 400 may have a high light transmittance for the visible light band but a relatively low light transmittance for the infrared light band. In particular, the cover glass 400 may have a relatively low light transmittance in a wavelength band of 5 to 14 [micro] m, which is the light sensed by the infrared ray temperature sensor 300. [ Specifically, the cover glass 400 may have a light transmittance of 70% or less with respect to a wavelength band of 5 mu m to 14 mu m.

As described above, since the cover glass 400 has low light transmittance in the infrared band, if the cover glass 400 is covered with the infrared ray temperature sensor 300, the light for the accurate temperature measurement can be smoothly It may not be received. Therefore, the cover glass 400 is formed so as not to cover the infrared ray temperature sensor 300, and the infrared ray temperature sensor 300 is covered by the sensor glass 500 which is separated from the cover glass 400.

For this purpose, an opening is formed in a portion corresponding to the upper portion of the infrared ray temperature sensor 300 of the cover glass 400. A sensor glass 500 to be described later is inserted and coupled to the opening.

The sensor glass 500 is combined with the cover glass 400 and is positioned to cover the infrared temperature sensor 300.

The optical characteristics of the sensor glass 500 will be described with reference to FIGS. 2 and 4. FIG. 4 is a graph of light transmittance according to wavelength of a sensor glass of an electronic device according to an embodiment of the present invention.

The sensor glass 500 is transparent to the infrared wavelength band. Specifically, the sensor glass 500 has a light transmittance of 50% or more, preferably 60% or more, with respect to an infrared wavelength band (5 탆 to 14 탆) detected by the infrared temperature sensor 300.

The sensor glass 500 has a higher light transmittance with respect to the infrared wavelength band (5 탆 to 14 탆) detected by the infrared ray temperature sensor 300 than the cover glass 400. Specifically, the light transmittance of the sensor glass 500 may be 20% or more higher than that of the cover glass 400 with respect to the infrared wavelength band (5 탆 to 14 탆) detected by the infrared temperature sensor 300.

The sensor glass 500 may be, for example, a glass formed of a material containing zinc sulfide. It is preferable that the sensor glass 500 has the same color as the cover glass 400, but it is also possible that the sensor glass 500 has different colors.

Hereinafter, the cover glass 400, the sensor glass 500 and the like will be described in more detail with reference to FIG.

Referring to FIG. 5, the sensor glass 500 is coupled to the cover glass 400. Specifically, the sensor glass 500 is inserted and coupled to the opening of the cover glass 400.

The cover glass 400 and the sensor glass 500 may be combined by an adhesive resin material. Specifically, the inner circumferential surface of the opening of the cover glass 400 and the outer circumferential surface of the sensor glass 500 can be joined by the adhesive resin material 510. As the adhesive resin material 510, for example, epoxy or the like may be used.

The cover glass 400 and the sensor glass 500 may be watertightly coupled. Therefore, the display device 200 and the infrared temperature sensor 300 located under the cover glass 400 and the sensor glass 500 can be safely protected from infiltration of moisture or the like.

The outer surface of the cover glass 400 and the sensor glass 500 may be continuously formed. That is, the outer surfaces of the cover glass 400 and the sensor glass 500 can be located on the same plane. Accordingly, the user may not be able to distinguish the boundary portion between the cover glass 400 and the sensor glass 500 due to the tactile sense. This can improve the aesthetics of the electronic device as a whole, and has an effect of improving the touch of the user.

The infrared ray temperature sensor 300 may be configured to receive the light receiving unit 310 in the case 320 in which the infrared ray passing filter 330 is installed. Here, the light receiving unit 310 has a constant viewing angle. The FoV (Filed of View) region of the infrared ray temperature sensor 300 is determined by the viewing angle of the light receiving unit 310. The FoV region refers to a region where the light sensed by the light receiving unit 310 travels.

The sensor glass 500 may be formed to cover an area larger than the upper portion of the infrared temperature sensor 300. Specifically, the sensor glass 500 is formed so as to cover a portion including the FoV region of the infrared temperature sensor 300. Therefore, all the light irradiated to the infrared temperature sensor 300 passes through the sensor glass 500.

Hereinafter, an electronic device according to another embodiment of the present invention will be described with reference to FIG. The present embodiment described with reference to FIG. 6 will be described with reference to the points different from the above-described embodiment with reference to FIG. 1 to FIG.

6 is an enlarged cross-sectional view of a portion of an electronic device according to another embodiment of the present invention.

The cover glass 400 may be formed thicker than the sensor glass 500. The outer surface of the cover glass 400 and the sensor glass 500 may be continuously formed. Accordingly, the cover glass 400 and the groove formed on the inner surface of the sensor glass 500 can be formed inside the housing 100. At least a portion of the infrared temperature sensor 300 may be received within the groove.

In some cases, the infrared temperature sensor 300 may be higher in height than other components. In this case, the overall thickness of the electronic device can be increased due to the height of the infrared temperature sensor 300. [ As described above, the upper portion of the infrared temperature sensor 300 may be accommodated within the groove formed by the cover glass 400 and the inner surface of the sensor glass 500, thereby contributing to minimizing the overall thickness of the electronic device.

The embodiments of the electronic device of the present invention have been described above. The present invention is not limited to the above-described embodiments and the accompanying drawings, and various modifications and changes may be made by those skilled in the art to which the present invention pertains. Accordingly, the scope of the present invention should be determined not only by the claims of the present specification, but also by equivalents to the claims.

100: Housing
200: display device
300: Infrared temperature sensor
400: cover glass
500: Sensor glass

Claims (11)

A housing having a front surface opened;
A display device installed to face the inside of the housing from the front;
An infrared temperature sensor disposed inside the housing adjacent to the display device and facing the front;
A cover glass coupled to the housing and covering the display device and transparent to a visible light band; And
And a sensor glass coupled to the cover glass and covering the infrared temperature sensor and being transparent to an infrared wavelength band sensed by the infrared temperature sensor,
The cover glass and the sensor glass are watertightly coupled,
Wherein the cover glass and the outer surface of the sensor glass are formed continuously.
The method according to claim 1,
Wherein the cover glass comprises an opening,
Wherein the sensor glass is inserted and coupled to the opening.
The method according to claim 1,
The infrared temperature sensor has a field of view (FoV) determined by a viewing angle,
Wherein the sensor glass covers a portion including the FoV region.
The method according to claim 1,
Wherein the cover glass has a lower light transmission rate with respect to an infrared wavelength band detected by the infrared temperature sensor than the sensor glass.
5. The method of claim 4,
Wherein the cover glass has a light transmittance lower than that of the sensor glass by 20% or more with respect to an infrared wavelength band detected by the infrared temperature sensor.
delete The method according to claim 1,
Wherein the cover glass and the sensor glass are bonded by an adhesive resin material.
The method according to claim 1,
Wherein the infrared temperature sensor senses infrared rays in a wavelength band of 5 to 14 占 퐉 to measure the temperature.
The method according to claim 1,
Wherein the cover glass is thicker than the sensor glass.
10. The method of claim 9,
Wherein the cover glass and the groove formed by the inner surface of the sensor glass are formed inside the housing.
11. The method of claim 10,
Wherein at least a portion of the infrared temperature sensor is received within the groove.

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