KR20100019879A - Portable terminal having a display module - Google Patents

Abstract

A portable terminal with a built-in display module is provided. A portable terminal having a built-in display module, the portable terminal comprising: an image output unit configured to output an image from the display module and to be formed in the portable terminal; And a protection unit formed along an outer circumference of the image output unit in a shape protruding to the outside of the mobile terminal by a predetermined length, thereby ensuring user safety of the mobile terminal having the display module embedded therein. can do.

Description

Portable terminal having a display module

The present invention relates to a portable terminal with a built-in display module, and more particularly, to a portable terminal with a built-in display module, including a device for user safety.

Recently, as the use of portable terminals such as mobile communication terminals, personal portable communication terminals, personal data communication terminals, smart phones, and the like is generalized, user demands for performance and function improvement of portable terminal devices are gradually increasing. In particular, as the number of users of the Internet increases and the demand for mobility of the Internet increases, the wireless Internet business of mobile communication providers is being activated. As described above, although the use of the wireless Internet is rapidly increasing, it is difficult to display various graphic information provided by the World Wide Web due to the limitation on the display window size of existing miniaturized portable terminals.

Efforts have been made to increase the size of the display window of the portable terminal, that is, increase the size of the liquid crystal display device, but this has been a limitation in miniaturization of the portable terminal.

Accordingly, in order to overcome the limitation of the size of the display window of the portable terminal without limiting the miniaturization of the portable terminal, a projection display module is built in the portable terminal to display image information output from the portable terminal on a large screen. The technology to say is coming up.

However, in the case of a portable terminal having a built-in display module as described above, it is a problem to secure safety of a laser used as a light source in the display module. This is because when the laser light source is directly incident on the user's eye due to careless use of the user, the user's eye may be greatly damaged. Therefore, in the portable terminal in which the display module is embedded, securing the stability of the user has been raised as an important issue.

It is an object of the present invention to provide a portable terminal with a built-in display module that includes a device for the safety of the user.

According to an aspect of the present invention, a portable terminal having a built-in display module, the image is output from the display module, the image output unit formed on the portable terminal; And a protection unit formed along an outer circumference of the image output unit in a shape protruding to the outside of the portable terminal by a predetermined length.

Here, the protection unit may be combined with the display module to emit heat generated from the display module, and may be made of any one of copper and aluminum.

In addition, the protection unit may be inserted into the portable terminal during the idle period during which the projection display module does not operate.

Here, the display module, the light source; An optical modulator device for modulating the light incident from the light source through diffraction or reflection to emit modulated light; And a scanner for projecting the modulated light to a predetermined position on the screen.

The apparatus may further include a detector configured to detect whether the body is in contact with the protection unit. When the body is detected by the detection unit, the light source may be turned off, and the protection unit may be operated. The light source may be turned off when the scanner is not operated.

The length of the protective part may be 35 mm or more.

According to a preferred embodiment of the present invention, it is possible to ensure the user safety of a portable terminal with a built-in display module.

As the invention allows for various changes and numerous embodiments, particular embodiments will be illustrated in the drawings and described in detail in the written description. However, this is not intended to limit the present invention to specific embodiments, it should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention. In the following description of the present invention, if it is determined that the detailed description of the related known technology may obscure the gist of the present invention, the detailed description thereof will be omitted.

Terms such as first and second may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as the second component, and similarly, the second component may also be referred to as the first component. The term and / or includes a combination of a plurality of related items or any item of a plurality of related items.

When referred to herein as being "input" or "delivered" from one component to another component, it may be directly input to or passed directly to the other component, but may be input through another component in the middle Or may be communicated. On the other hand, when it is referred to as being "directly input" or "directly transmitted" from one component to another, it should be understood that it does not go through other components in between.

The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting of the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this application, the terms "comprise" or "have" are intended to indicate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, and one or more other features. It is to be understood that the present invention does not exclude the possibility of the presence or the addition of numbers, steps, operations, components, components, or a combination thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art. Terms such as those defined in the commonly used dictionaries should be construed as having meanings consistent with the meanings in the context of the related art, and are not construed in ideal or excessively formal meanings unless expressly defined in this application. Do not.

First, referring to FIG. 1, the structure of a portable terminal having a display module according to an embodiment of the present invention will be described. FIG. 1 is a diagram schematically illustrating a structure of a portable terminal having a display module according to an embodiment of the present invention.

Referring to FIG. 1, the mobile terminal 100 having the display module according to the present embodiment includes an image output unit 110, a cup 120, a display unit 130, and an input unit 140. It may include.

Unlike the general portable terminal, the portable terminal 100 having the built-in display module according to the present embodiment has a built-in display module capable of displaying an image. The display module according to the present embodiment may be a projection type display module, but in addition, various types of display modules may be included in the present invention within the scope of the present invention. The display module according to the present embodiment will be described in more detail with reference to FIG. 2 below. As such, the light emitted from the portable terminal 100 including the projection display module forms an image on the screen. That is, according to the present invention, the display module is included in the portable terminal 100, so that a function of displaying an image can be performed in addition to the mobile communication function which is a basic function of the portable terminal.

The image output unit 110 is a place where an image formed by the display module embedded in the portable terminal is output to the outside of the portable terminal, and may be formed in a predetermined shape on a part of the outer case of the portable terminal. As the image is output to the outside of the portable terminal through the image output unit 110, the image is displayed on the screen located outside the portable terminal.

As shown in FIG. 1, the image output unit 110 according to the present embodiment may be formed in a square shape on a part of the outer case of the portable terminal, but in addition to the square shape, the image output unit 110 may have various shapes within the object range of the present invention. It will be apparent to those skilled in the art that they can be formed.

The protection unit 120 is formed along the outer periphery of the image output unit 110 in a shape protruding to the outside of the portable terminal 100 by a predetermined length. In this case, the protection unit 120 may be formed in a cup shape, as shown in FIG. 1, and in addition, if the shape extends outside the image output unit 110 by a predetermined length, the image output unit may have any shape. It may be formed along the outer periphery of the (110).

The protection unit 120 is to prevent the light emitted directly through the image output unit 110, that is, the light directly enters the user's eyes, the user's eyes the protection unit 120 outside the portable terminal 100 It does not approach the light emitted from the image output unit 110 as protruding length. The light emitted through the image output unit 100 is light that forms an image on the screen, and is generally formed by a laser light source, so that when such light is incident on the user's eyes, the user's safety may be impaired. Because. The predetermined length at which the protection unit 120 protrudes out of the portable terminal 100 may be a length for satisfying class 1 in the International Regulations related to Laser Safety, and may be defined as necessary to enhance safety according to products. The length of the protection unit 120 may be adjusted to secure the above distance. According to the 2007 version of the International Laser Safety Regulation, the length of the protective part 120 may be 35 mm or more.

As described above, in addition to the safety function, the protection unit 120 may be combined with a display module embedded in the mobile terminal 100 to emit heat to the outside generated by the display module. At this time, the protection unit 120 is formed of a material having a very good thermal conductivity, it may be any one of copper or aluminum.

The protection unit 120 may also be automatically or manually inserted into the inside of the portable terminal for the appearance and convenience of use of the portable terminal 100 in a rest period during which the user does not use the display module. That is, when the user uses the function of the display module built in the mobile terminal 100, the user automatically protrudes to the outside of the mobile terminal 100, and when the user does not use the function of the display module, the mobile terminal 100 is used. Can go inside. That is, in order to secure the safety of the use of the display module embedded in the mobile terminal 100, the above-described protection unit 120 may automatically protrude to the outside when the user uses the display module. However, the protection unit 120 may protrude out of the portable terminal 100 manually by a user and be inserted into the portable terminal 100.

The portable terminal 100 according to the present exemplary embodiment may further include a detector (not shown) that detects whether the user's body is in contact with the protection unit 120. In this case, the detector (not shown) When a body contact is detected at, the light source included in the display module embedded in the mobile terminal 100 is turned off. Through the operation of such a sensing unit (not shown), even when the user is close to the eye of the protection unit, the light source can be turned off to ensure the safety of the user more reliably.

In addition, the protection unit 120 according to the present embodiment, in addition to the safety function and heat dissipation function, detects whether the scanner included in the display module included in the portable terminal 100 operates, and immediately if the scanner does not operate, The light source can be turned off. Through this, unnecessary operation of the light source may be stopped when the display module built in the mobile terminal 100 is malfunctioned, thereby preventing waste of power.

The display unit 130 may be generally formed of an LCD, and receives and displays display data on key input data input from the input unit 140 to the controller (not shown) of the mobile terminal 100 from the controller (not shown). In addition, the operation state of the terminal and a plurality of information are displayed as icons, texts, and images.

The input unit 140 may include various keys (eg, one or more of numeric keys, character keys, function keys, etc.) to provide key input data input by a user to a controller (not shown), and a touch method. It may also be a touch pad operated by. According to an exemplary embodiment of the present invention, a command for controlling the operation of the protection unit 120 may be input to the controller (not shown) of the portable terminal 100 through the input unit 120.

2 illustrates the configuration of a display module embedded in a display module-embedded portable terminal according to an exemplary embodiment. 2 is a diagram schematically illustrating a configuration of a display module embedded in a display module-embedded portable terminal according to an exemplary embodiment.

Referring to FIG. 2, the display module includes a light source 210, an illumination optical system 220, an optical modulator 230, a driver IC 235, a projection optical system 240, a scanner 250, and an image control circuit 280. It may include. Here, the driver IC 235 and the image control circuit 280 are components necessary for controlling the driving of the optical modulator 230.

When the display module implements a full color image, the light source 210 generally includes a red light source 212, a green light source 214, and a blue light source 216, respectively, as shown in FIG. 4. The three primary colors of light, red light, green light and blue light, are sequentially or simultaneously irradiated. Of course, a white light source (not shown), which is a single light source, may be used as the light source 210. In this case, by placing a color separator (not shown) such as a color wheel in front of the white light source, red light, green light, and blue light are sequentially It can also be investigated. As the light source, a light emitting diode (LED), a laser diode (LD), or the like may be used.

The illumination optical system 220 is disposed between the light source 210 and the light modulator 230, so that the predetermined color light output from the light source 210 can be concentrated on the light modulator 230. Accordingly, the illumination optical system 220 may include an optical component (for example, a reflection mirror, etc.) for changing an optical path so that the color light output from the light source 210 may be incident on the optical modulator 230. In addition, when the one-dimensional optical modulator is used as the optical modulator 230, the linear light converter (not shown) converts the light output from the light source 210 into a linear beam and transmits the linear light to the optical modulator 230. May be included in the illumination optical system 220. Such a linear light conversion unit may be implemented by a collimation lens, a condenser, a cylindrical lens, or the like, or through various configurations known in the art.

The optical modulator 230 modulates the color light incident through the illumination optical system 220 in correspondence with the driving voltage provided by the driver IC 235. That is, the light modulator 230 modulates the light incident from the light source through diffraction or reflection and emits the modulated light. Here, the optical modulator 230 may be a one-dimensional optical modulator that is in charge of the one-dimensional linear image corresponding to the vertical scanning line or the horizontal scanning line in the two-dimensional image of one frame by arranging a plurality of micromirrors in a line.

The driver IC 235 receives the optical modulator control signal from the image control circuit 280, and converts the transmitted optical modulator control signal into a corresponding driving voltage value to provide the optical modulator 230 to the optical modulator 230. do. Here, the optical modulator control signal means a driving control signal transmitted to the driver IC 235 to control the driving of the optical modulator 230.

The projection optical system 240 includes at least one projection lens (not shown), so that the modulated light output from the optical modulator 230 can be projected onto the screen 270 via the scanner 250. do. In this case, in addition to the projection lens, the projection optical system 240 separates only modulated light having a specific order among modulated light output from the optical modulator 230 (for example, transmits only the 0 th diffraction light and the 1 st diffraction light is reflected or Absorbing or vice versa) may be included to allow slits (not shown) to be projected onto the screen 270. In FIG. 2, the projection optics 240 are shown before the scanner 250, but the projection optics 240 may be located between the scanner 250 and the screen 270, or the scanner 250. Of course, it may be positioned separately before and after each.

The scanner 250 reflects the modulated light output from the optical modulator 230 at a predetermined angle and projects the scanned light at a predetermined position on the screen 270. In this case, the predetermined angle is determined by the scanner control signal transmitted from the image control circuit 280. As the scanner 250, a galvanometer mirror, a rotating bar, a polygon mirror, or the like may be used according to a known hole.

The image control circuit 280 receives an image signal corresponding to a two-dimensional image of one frame, and outputs an optical modulator control signal, a scanner control signal, and a light source control signal according to the image signal, respectively, the driver IC 235 and the scanner 250. ), The light source 210 serves to control the operation of each component. That is, the image control circuit 280 provides the driver IC 235 with an optical modulator control signal corresponding to brightness information (that is, color-specific luminance value) to be displayed for each pixel constituting the frame, and the optical modulator control signal. Correspondingly, the scanner 250 provides a scanner control signal for adjusting the rotational angle or rotational speed of the scanner 250 so that a vertical scan line (or a horizontal scan line) is projected at a corresponding position on the screen 270, and sequentially modulates color light. The light source control signal for turning on the red light source 212, the green light source 214, and the blue light source 216 one by one is provided to the light source 210.

For example, assuming that a two-dimensional image of one frame to be implemented on the screen 270 has a resolution of 640 x 480 composed of 640 horizontal pixels and 480 vertical pixels, as shown in FIG. A total of 640 vertical scan lines (one vertical scan line consists of 480 pixels) or 480 horizontal scan lines (one horizontal scan line consists of 640 pixels) exist in the dimensional image.

At this time, assuming that the optical modulator 230 has a total of 480 pixels, so that the optical modulator 230 is responsible for the one-dimensional linear image corresponding to any one of the vertical scanning line of one frame of the two-dimensional image, the scanner 250 is the optical modulator 230 The 1D linear image output from the vertical direction is input and scanned in the horizontal direction as shown in FIG. 7A so that the 2D image of one frame is displayed on the screen 270.

In this case, the full color image of one frame is implemented by a combination of red, green, and blue subframe images. Of course, it can be realized by the combination of other colors. For example, as shown in FIG. 4, when a full-color image of one frame is implemented using only one optical modulator of one panel without separately providing an optical modulator for each color light, a method of sequentially modulating each color light should be used. That is, after performing light modulation on red light to scan a subframe image of red on the screen, light modulation on green light is performed to scan a subframe image of green on the screen, and then blue light thereafter. This is a method of scanning a subframe image of blue on a screen by performing light modulation on the screen.

Although the above has been described with reference to a preferred embodiment of the present invention, those skilled in the art to which the present invention pertains without departing from the spirit and scope of the present invention as set forth in the claims below It will be appreciated that modifications and variations can be made.

1 is a view schematically showing the structure of a portable terminal with a display module according to an embodiment of the present invention.

2 is a view schematically showing the configuration of a display module embedded in a display module-embedded portable terminal according to the present embodiment.

<Description of the symbols for the main parts of the drawings>

110: video output unit

120: protection

Claims (8)

In the portable terminal with a built-in display module, An image output unit configured to output an image from the display module and to be formed in the portable terminal; And And a protection unit formed along an outer circumference of the image output unit in a shape protruding to the outside of the portable terminal by a predetermined length. The method of claim 1, The protection unit is coupled to the display module, a portable terminal with a built-in display module, characterized in that for dissipating heat generated from the display module. The method of claim 1, The protection unit is a portable terminal with a built-in display module, characterized in that made of any one of copper, aluminum. The method of claim 1, The protection unit is a portable terminal with a built-in display module, characterized in that inserted into the inside of the portable terminal during the idle period of the projection display module does not operate. The method of claim 1, The display module, Light source; An optical modulator device for modulating the light incident from the light source through diffraction or reflection to emit modulated light; And And a scanner for projecting the modulated light to a predetermined position on a screen. The method of claim 5, Further comprising a detector for detecting whether the body in contact with the protection unit, When the touch of the body is detected by the sensing unit, the light source is off (off) The portable terminal with a built-in display module, characterized in that. The method of claim 5, The protection unit detects whether the scanner is in operation, and the light source is turned off when the scanner is not operating. The method of claim 1, The length of the protection unit is a portable terminal with a built-in display module, characterized in that more than 35mm.

Images