JP2005109903A - Portable electronic apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a portable electronic apparatus with a compact light-weight imaging unit which has a small number of components. <P>SOLUTION: A portable telephone 1 comprises an imaging unit having lenses 17, 21 and an imaging element 29 and a liquid crystal display 26 having liquid crystals filled in the gap between two glass substrates 24, 25. The display side glass substrate 24, one of the substrates, is located between the lenses 17, 21 and the imaging element 29, and an IR cut coating 33 for cutting IR rays is applied to a region of the substrate 24 opposed to the imaging element 29. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a portable electronic device, and more particularly to a portable electronic device including an imaging device and a display device.

  2. Description of the Related Art Recently, portable electronic devices such as mobile phones and PDAs (Personal Digital Assistance) that have an imaging device and an imaging function are widely known (see, for example, Patent Document 1).

Conventionally, as shown in FIG. 4, the imaging device 38 provided in such a portable electronic device includes lenses 40 a and 40 b supported by a support member 39, and is on the printed wiring board 41 and the lenses 40 a and 40 b. An image sensor 56 having a photoelectric conversion unit (not shown) is disposed at a position facing the. As the image sensor 56, for example, an image sensor constituted by a CCD or an image sensor constituted by a CMOS is applied. Between the lenses 40a and 40b and the image sensor 56, an infrared cut coating 42 for cutting infrared rays and a glass 44 with an AR (Anti-Reflective) coating 43 for preventing reflection of light are arranged. It is incorporated in the housing 37 as a unit independent of other components. The reason why the infrared cut coating 42 is applied to the subject side of the glass 44 is that the image sensor 56 such as a CCD sensor or a CMOS sensor reacts to the infrared region in addition to the visible light. This is because a correct color cannot be reproduced. Further, the AR coating 43 is applied to the image pickup device side of the glass 44 to prevent reflection of light, increase the amount of light incident on the image pickup device 56, improve the brightness, and display a clear image by the image pickup device 56. This is to form an image. Further, an opening 45 for exposing the lenses 40a and 40b is formed on one surface of the housing 37 and corresponding to the position where the imaging device 38 is incorporated. A cover member 46 for protecting 40b is fixed by a double-sided tape 47. Further, a liquid crystal display 48 as a display unit and an LCD (Liquid Crystal Display) unit 51 including a light guide plate 49 and a light collecting / diffusing sheet 50 for guiding light from a light source (not shown) to the liquid crystal display 48 are provided inside the housing 37. The LCD unit 51 is supported on a printed wiring board 53 by an LCD holder 52. An opening 54 for exposing the liquid crystal display 48 is provided on one surface of the housing 37 corresponding to the position where the liquid crystal display 48 is disposed. 54 and a portion extending therethrough are covered with a display panel 55 for protecting the liquid crystal display 48.
JP 2003-169116 A

  However, in the case where the imaging device 38 and the LCD unit 51 as a display device are separately provided in the casing 37 of the portable electronic device as described above, separate components are required, so the number of components is reduced. Increases the number of assembly steps. In addition, a gap for assembling each part is required and a partition wall for partitioning each part needs to be provided, and thus there is a problem that the apparatus cannot be reduced in size and weight.

  Therefore, the present invention is made to solve the problem, and reduces the number of parts in a portable electronic device equipped with an imaging device and a display device, thereby realizing a reduction in size and weight of the entire device. .

In order to solve such a problem, the invention described in claim 1 is a portable electronic device including an imaging device that includes a lens and an imaging device and performs imaging, and a display device that includes a flat transparent substrate. In the equipment
One end of the transparent substrate is provided so as to be positioned between the lens and the imaging device, and an infrared cut coating for cutting infrared rays is applied to a region of the transparent substrate facing the imaging device.

  According to the first aspect of the present invention, since the infrared cut coating is applied to the transparent substrate constituting the display device so as to face the image pickup device, the infrared ray is cut out of the light incident on the lens of the image pickup device. Therefore, it is not necessary to provide a separate member.

  According to the first aspect of the present invention, since the infrared cut coating is applied to the transparent substrate constituting the display device and disposed between the lens of the image pickup device and the image pickup device, the infrared cut is performed on the image pickup device of the image pickup device. There is no need to provide a separate member. As a result, the number of parts can be reduced, and the assembly man-hours can be reduced and the cost can be reduced.

  In addition, instead of providing the imaging device and the display device separately, instead of providing each component such as using the transparent substrate or display panel of the display device as an infrared cut member or a lens protection member of the imaging device, There are few gaps for assembling each part and no standing wall covering each part, and the entire apparatus can be reduced in size and weight.

  Hereinafter, embodiments of a portable electronic device according to the present invention will be described with reference to the accompanying drawings.

  FIGS. 1 to 3 show an embodiment of a portable electronic device according to the present invention. In this embodiment, a case where a mobile phone 1 is used as a portable electronic device will be described. First, as shown in FIGS. 1 (a) and 1 (b), the cellular phone 1 connects the first housing 2 and the second housing 3 via a hinge portion 4 so as to be rotatable, and is necessary. It is foldable so that it can be opened and closed accordingly.

  As shown in FIG. 1A, a first display panel 5 is disposed on one surface of the first housing 2 and on the inner surface when folded (hereinafter referred to as a front surface). In addition, an input unit 6 including various operation keys and the like is disposed on one surface of the second housing 3 and on the inner surface when folded.

  Further, as shown in FIG. 1B, a second display panel 7 is disposed on one surface of the first housing 2 which is an outer surface when folded (hereinafter referred to as a back surface).

  A battery box cover 8 is provided on one surface of the second housing 3 that is outside when folded, and power is supplied to each part of the mobile phone 1 to the battery box provided inside the cover. A battery (not shown) and the like are stored. Further, an antenna 9 is disposed at one upper end of the second housing 3.

  Next, the inside of the 1st housing | casing 2 is demonstrated using FIG.2 and FIG.3.

  As shown in FIG. 2, an opening 10 is provided in the front of the first housing 2 from the vicinity of the hinge portion 4 to the vicinity of the upper end of the first housing 2, and an acrylic resin is provided in the opening 10. A first display panel 5 made of a transparent material such as is fitted. A receiver 11 that converts an electrical signal into an audio signal is provided at one end inside the first housing 2 and above the opening 10 above the first housing 2.

  Inside the first housing 2, a main LCD (Liquid Crystal Display) unit 12 is provided such that its display surface faces the opening 10. The main LCD unit 12 includes a liquid crystal display (not shown) configured by injecting liquid crystal between two glass substrates, a light guide plate (not shown) for guiding light from a light source (not shown) to the liquid crystal display, and It is constituted by a light collecting / diffusing sheet (not shown) for more efficiently irradiating the liquid crystal display with light guided by the light guide plate. An image or the like displayed on the liquid crystal display is visible through the first display panel 5.

  On the non-display surface side of the main LCD unit 12, a printed wiring board 13 for controlling various electronic components housed in the first housing 2 is disposed.

  Next, a cover member 14 that covers the entire back surface is provided on the back surface of the first housing 2, and a first opening having a width dimension substantially equal to the width direction of the cover member 14 is provided at a substantially central portion of the cover member 14. A portion 15 is provided extending in the longitudinal direction of the cover member 14. A cylindrical second opening 16 is formed at one end of the cover member 14 at a position closer to the hinge 4 than the first opening 15. A first lens 17 is fitted inside the second opening 16, and the first lens 17 is bonded and fixed to the second opening 16 with an adhesive 18.

  From the position closer to the hinge portion 4 to the first opening portion 15 than the position where the second opening portion 16 is provided, it is cut out so as to be slightly lower than the other portions. A second display panel 7 formed so as to match the shape of the notch is fitted. The second display panel 7 is made of a transparent material such as an acrylic plate, and is fixed to the cover member 14 with a double-sided tape 19. In addition, an illustration or the like is designed by the printed layer 20 in a region overlapping the cover member 14 on the back surface of the second display panel 7 so that the illustration or the like can be visually recognized from the outside through the transparent second display panel 7. ing.

  The second display panel 7 is integrally formed with a second lens 21 at a position corresponding to the first lens 17 fitted in the cover member 14. The optical axis of the second lens 21 coincides with the optical axis of the first lens 17, and the first lens 17 and the second lens 21 constitute a lens of the imaging device.

  Inside the first housing 2 and between the cover member 14 and the printed wiring board 13, the sub LCD unit 23 held by the LCD holder 22 has its display surface on the back side of the first housing 2. It is provided to face.

  Similarly to the main LCD unit 12, the sub LCD unit 23 is configured by injecting liquid crystal between the display surface side glass substrate 24 and the display surface side glass substrate 25, and a light collecting plate 27. The diffusion sheet 28 is used.

  The display surface side glass substrate 24 is longer than the display surface side glass substrate 25 and extends from the vicinity of the upper end of the first housing 2 to the vicinity of the hinge portion 4. An image pickup device 29 constituting an image pickup device is disposed at a position on the non-display surface side of the long formed portion and facing the first lens 17 and the second lens 21. The image pickup device 29 is bonded to the display surface side glass substrate 24 with solder 30, and the image pickup device 29 is electrically connected to the display surface side glass substrate 24 through bonding with the solder 30. The image sensor 29 is, for example, an image sensor configured with a CCD or an image sensor configured with a CMOS, and includes a photoelectric conversion unit (not shown), and is imaged by the first lens 17 and the second lens 21. An image is converted into an electrical signal. Further, a driving driver for driving the liquid crystal of the liquid crystal display 26 on the non-display surface side of the display surface side glass substrate 24 and on the upper end portion side of the first housing 2 from the position where the imaging element 29 is disposed. 31 is disposed. A sealant 32 is applied around the image pickup element 29 and the drive driver 31 to prevent the image pickup element 29 and the drive driver 31 from being peeled off from the display surface side glass substrate 24.

  An infrared cut coating 33 for cutting infrared rays is applied to the display surface side of the display surface side glass substrate 24 and corresponding to the position where the image pickup device 29 is disposed. Further, an AR coating 34 for preventing reflection of light is applied to a position corresponding to the imaging element 29 on the other surface of the display surface side glass substrate 24.

  The display surface of the sub LCD unit 23 is visible through the second display panel 7, and a half mirror sheet 35 is attached to the surface of the second display panel 7 corresponding to the display surface of the sub LCD unit 23. Has been. By attaching the half mirror sheet 35, the display content of the liquid crystal display 26 of the sub LCD unit 23 can be visually recognized only when the light source is turned on, and the second display panel 7 is used as a mirror when the light source is turned off. be able to. In addition, since the amount of external light transmitted through the second display panel 7 is greatly reduced, it is possible to prevent the influence of external light on image shooting.

  A sponge frame 36 is provided between the cover member 14 and the sub LCD unit 23 to protect the surface of the liquid crystal display 26 of the sub LCD unit 23 so that the liquid crystal display 26 of the sub LCD unit 23 does not directly contact the cover member 14 and is not damaged. It is supposed to be.

  Next, the operation of this embodiment will be described.

  When the user operates the input unit 6 to input various information, the input information and the like are displayed on the liquid crystal display of the main LCD unit 12 or the liquid crystal display 26 of the sub LCD unit 23 and the light source is turned on. The light from the light source is guided along the light guide plate to illuminate the liquid crystal display, and the information displayed on the liquid crystal display through the half mirror sheet is visible to the user.

  When the user operates the input unit 6 to select imaging and enters an imaging operation, the light source of the sub LCD unit 23 is turned off to prevent light interference with the first lens 17 and the second lens 21. The half mirror sheet 35 reflects external light so that the external light does not affect imaging.

  The light is collected by the first lens 17 and the second lens 21, and is imaged on the image sensor 29 after the infrared ray is cut by the infrared cut coating 33 applied to the display surface side glass substrate 24. The image formed on the image sensor 29 is converted into an electrical signal by the photoelectric conversion unit of the image sensor 29 and displayed in real time on the liquid crystal display of the main LCD unit 12 or the liquid crystal display 26 of the sub LCD unit 23 which is a display unit. The In this state, when the user performs an imaging operation, the image at that time remains displayed on the liquid crystal display of the main LCD unit 12 or the liquid crystal display 26 of the sub LCD unit 23, and the image is displayed as image data. Stored in the storage unit.

  According to the present embodiment, since the display surface side glass substrate 24 constituting the liquid crystal display 26 of the sub LCD unit 23 can also serve as the infrared cut filter of the image pickup device 29, the number of components can be reduced and the components can be reduced. Since the gap between them can be reduced, the entire apparatus can be reduced in size and weight.

  In the present embodiment, an infrared cut coating 33 is applied on the display surface side of the display surface side glass substrate 24 constituting the liquid crystal display 26 of the sub LCD unit 23 provided on the back side of the mobile phone 1, and infrared rays for the image sensor 29 are provided. Although the cut is to be performed, the place or member to which the infrared cut coating is applied is not limited to this.

  That is, for example, the infrared cut coating 33 may be applied to the back surface side (the mounting surface side of the image sensor 29) of the display surface side glass substrate 24 constituting the liquid crystal display 26 of the sub LCD unit 23. In this case, the AR coating 34 is applied to the display surface side of the glass substrate 24.

  Further, the infrared cut coating 33 may be applied to the non-display surface side glass substrate 25 constituting the liquid crystal display 26 of the sub LCD unit 23. In this case, instead of the display surface side glass substrate 24 constituting the liquid crystal display 26 of the sub LCD unit 23, the non-display surface side glass substrate 25 is formed long so that one end portion thereof overlaps the first lens 17 and is not displayed. An infrared cut coating may be applied to either the front side or the back side of the region of the surface side glass substrate 25 that overlaps the first lens 17, and AR coating may be applied to the other side. Note that the image pickup device 29 is mounted on the back side of the region overlapping the first lens 17 of the non-display surface side glass substrate 25.

  When the image pickup apparatus is provided on the front side of the mobile phone 1 together with the liquid crystal display of the main LCD unit 12, the lens and the image sensor that constitute the image pickup apparatus, and the two liquid crystal displays that constitute the liquid crystal display of the main LCD unit 12. The glass substrate constituting the liquid crystal display of the main LCD unit 12 may be subjected to infrared cut coating in the same manner as the positional relationship with one of the glass substrates as shown in FIG. Reference numeral 57 shown in FIG. 1A denotes a second lens formed on the first display panel 5 when configured in this way.

  In the present embodiment, the first lens 17 provided on the cover member 14 and the second lens 21 formed on the second display panel 7 constitute the lens of the imaging device. The lens of the imaging apparatus may be configured by incorporating a plurality of lenses into the cover member 14 without forming a lens on the panel 7.

  In the present embodiment, the drive driver 31 for driving the liquid crystal display 26 as well as the imaging device 29 is mounted on the display surface side glass substrate 24 of the liquid crystal display 26. It is also possible to provide only the image sensor 29 on the display surface side glass substrate 24 provided at a location.

  In the present embodiment, a liquid crystal display is used as the display device. However, the display device may be provided with a flat transparent member capable of applying an infrared cut coating as a constituent member, and is limited to the liquid crystal display. Not. As such a display device, there are an electroluminescence display and an electrochromic display, and there is also a display device using electronic ink which has recently attracted attention as electronic paper. Electronic ink is composed of microcapsules enclosing charged colored particles and a liquid of a color different from the particles, or microcapsules enclosing two kinds of colored particles and a transparent liquid that are oppositely charged. In such a display device using electronic ink, for example, the microcapsule is placed between a glass substrate having a driving electrode formed on the surface and a plastic film sheet having a transparent full-surface electrode formed on the surface. An infrared cut coating can be applied to a glass substrate that is sandwiched and formed with a drive electrode.

  In the present embodiment, the portable electronic device of the present invention has been described as the mobile phone 1, but the portable electronic device of the present invention is not limited to this, and is a portable electronic device having an imaging device and a display device. What is necessary is just PHS, PDA, etc.

FIG. 1A is a diagram showing an external configuration of a mobile phone according to an embodiment of the present invention. FIG. 1B is a rear view of the mobile phone shown in FIG. 1 is an exploded perspective view schematically showing a mobile phone according to an embodiment of the present invention. It is sectional drawing which showed the principal part of the 1st housing | casing of the mobile telephone which concerns on embodiment of this invention. It is sectional drawing which showed the principal part of the conventional mobile telephone.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Mobile phone 2 1st housing | casing 5 1st display panel 7 2nd display panel 12 Main LCD unit 23 Sub LCD unit 24 Display side glass substrate 29 Image pick-up element 33 Infrared cut coating

Claims (1)

In a portable electronic device that includes an imaging device that includes a lens and an imaging element and performs imaging, and a display device that has a flat transparent substrate,
One end of the transparent substrate is provided so as to be positioned between the lens and the imaging device, and an infrared cut coating for cutting infrared rays is applied to a region of the transparent substrate facing the imaging device. Type electronic equipment.

Images