JP2009295190A - Pointing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electronic appliance which explicitly indicates an operation area of a pointing device, improves operability, and improves design of the appliance. <P>SOLUTION: The pointing device includes: a board 45; a detection sheet which is provided on one of surfaces of the board and has an input surface; a light source 56 mounted on the other surface of the board; and a light conductive plate 58 which is provided on the board and leads light from the light source to the input surface side of the detection sheet. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a pointing device having a flat input surface.

  As an electronic device, for example, a portable notebook personal computer (hereinafter referred to as a notebook PC) includes a casing that forms an outer wall and an input device provided in the casing. Examples of the input device include a pointing device that inputs information using a sheet that detects capacitance, and a touch panel that inputs information using a pressure-sensitive film that detects pressure.

  2. Description of the Related Art In recent years, electronic devices have been provided in which a pointing device is mounted on an inner surface of a housing and an operation region is provided at a position corresponding to the pointing device on the outer surface of the housing (for example, Patent Document 1). . According to such an electronic device, it is not necessary to provide a protective cover or the like for protecting the input surface of the pointing device by housing the pointing device in the housing, and the assembly of the device is facilitated. In addition, it is not necessary to provide an opening for exposing the pointing device in the housing, and the design of the device can be improved.

Japanese Patent Laid-Open No. 2004-227222

  When the pointing device is arranged inside the housing as in the electronic equipment configured as described above, it is necessary for the user to easily recognize the operation area of the pointing device from the outside of the housing. There is. Even in the above-described electronic device, contrivances such as making the operation region uneven and changing the color are taken, but it is desired to further improve operability and design.

  The present invention has been made based on such circumstances, and the purpose thereof is to easily recognize the operation area of the pointing device, improve operability, and improve the design of equipment. An object of the present invention is to provide an electronic device that can be made to operate.

  In order to achieve the above object, a pointing device according to an aspect of the present invention includes a substrate, a detection sheet provided on one surface of the substrate and having an input surface, and a light source mounted on the other surface of the substrate. And a light guide plate that is provided on the substrate and guides light from the light source to the input surface side of the detection sheet.

  According to the above configuration, an electronic device capable of clearly showing the operation area of the pointing device to the user by the display unit, improving the operability, and improving the design of the device. Equipment is obtained.

FIG. 1 is a perspective view showing a personal computer according to the first embodiment of the present invention. FIG. 2 is a sectional view of the personal computer taken along line AA in FIG. FIG. 3 is an exploded perspective view showing an operation area and a pointing device of the personal computer. FIG. 4 is a perspective view showing the other side of the pointing device. FIG. 5 is an exploded perspective view showing an operation button display unit and a touch pad of the personal computer. FIG. 6 is a cross-sectional view showing an operation button display unit and a touch pad of the personal computer. FIG. 7 is a perspective view showing a pointing device of a personal computer according to the second embodiment of the present invention. FIG. 8 is a plan view schematically showing an operation area and a display unit of a personal computer according to the third embodiment of the present invention. FIG. 9 is a plan view schematically showing an operation area and a display unit of a personal computer according to the fourth embodiment of the present invention. FIG. 10 is a plan view schematically showing an operation area and a display unit of a personal computer according to the tenth embodiment of the present invention.

Hereinafter, a first embodiment applied to a portable computer as an electronic apparatus of the present invention will be described in detail with reference to the drawings.
FIG. 1 shows a notebook portable computer, and FIG. 2 shows an operation area and a pointing device of the portable computer.

  As shown in FIG. 1, the portable computer 10 includes a device main body 12 and a display unit 13 supported by the device main body. The device body 12 has a housing 14. The housing 14 has a rectangular base 15 and a substantially rectangular cover 16 fitted thereto, and is formed in a flat box shape. The outer wall of the housing 14 has an outer surface 14a and an inner surface 14b exposed to the outside.

  The cover 16 constituting the housing 14 is formed of a light-transmitting resin such as acrylic, and the surface thereof is covered with a light-blocking surface layer (light-blocking film) 18. As will be described later, a part of the surface layer 18 is formed to be transparent so as to transmit light.

  A substantially rectangular opening 19 is formed over the center and rear half of the cover 16, and a keyboard 20 is exposed in the opening. A substantially first half portion of the cover 16 forms a palm rest 22. As will be described later, an operation area 50 and a click switch 42 for operating a pointing device are provided at the center of the palm rest 22.

  A pair of speakers 24 is provided at the rear end portion of the cover 16, and a plurality of operation button display portions 26 are provided between these speakers. A pair of leg portions 28 are provided at the rear end portion of the cover 16 so as to be separated from each other in the width direction of the housing 14.

  The display unit 13 includes a display housing 30 and a liquid crystal panel 32 accommodated in the display housing 30. A display window 31 is formed on the front wall of the display housing 30. The window 31 has a size covering most of the front wall, and the display screen of the liquid crystal panel 32 is exposed to the outside of the display housing 30 through the window 31.

  The display housing 30 has a pair of connecting recesses 33 at one end thereof. These connecting recesses 33 are spaced apart from each other in the width direction of the display housing 30 and engage with the leg portions 28 of the housing 14. The display housing 30 is supported so as to be rotatable with respect to the housing 14 by hinges (not shown) provided in the coupling recess 33 and the leg portion 28.

  As a result, the display unit 13 is closed so that the top surface of the housing 14 including the palm rest 22 and the keyboard 20 is covered from above, and the open position where the top surface of the housing and the liquid crystal panel 32 are exposed. It can be turned over. FIG. 1 shows the portable computer 1 in a state where the display unit 13 is rotated to the open position.

  As shown in FIGS. 1 and 2, a hard disk drive (HDD), an optical disk drive, etc. (not shown) are disposed in the housing 14, a printed wiring board 34, a pointing device 40 as an input device, and the like. Is housed. The printed wiring board 34 and the HDD are screwed to the bottom wall of the base 15 of the housing 14.

  As shown in FIGS. 2, 3, and 4, the pointing device 40 includes an input sheet 44 and a printed circuit board 45 constituting a driving device. The input sheet 44 is, for example, a detection sheet that senses capacitance, and one surface is a flat input surface 44a. The input sheet 44 has, for example, a rectangular shape, is affixed on one surface of a rectangular printed board 45, and is electrically connected to the printed board. On the other surface of the printed circuit board 45, a drive IC 47, a connector 49, and the like are mounted.

  The pointing device 40 is accommodated in the casing 14 by overlapping the input surface 44 a on the inner surface 14 b of the casing 14 and, in this case, overlapping and pasting on the center of the inner surface of the palm rest 22 of the cover 16. At this time, the pointing device 40 is attached to the inner surface of the housing 14 by, for example, a double-sided tape. A recess 46 and a positioning rib (not shown) are formed at the center of the inner surface of the palm rest 22, and the pointing device 40 is attached to the bottom surface of the recess 46 while being positioned by the positioning rib.

  In the portable computer 10, the cover is formed of resin, and the outer surface is covered with a surface layer 18 having a light shielding property. The pointing device 40 is accommodated in the housing 14. Therefore, the position of the input surface 44a cannot be visually recognized from the outside of the housing 14. Therefore, in the portable computer 10, an operation area 50 for input operation is provided in a position corresponding to at least a part of the pointing device 40, for example, substantially the entire input surface 44 a, on the outer surface 14 a of the housing 14. That is, in the portable computer 10, since the input sheet 44 is overlapped with the central portion of the inner surface of the cover 16, the operation region 50 is provided in the central portion of the palm rest 22 that is the outer surface 14 a of the cover 16.

  The operation area 50 may be discriminated from the surroundings by visual or tactile sense. For example, the operation region 50 is defined by a rectangular recess 52 formed in the palm rest 22 so that the bottom surface has substantially the same area as the input surface 18a. That is, the bottom surface of the recess 52 becomes the operation region 50. The recess 52 is located between the keyboard 20 and the click switch 42, and one side thereof is arranged in parallel with the lower edge of the keyboard 20.

  The surface layer 18 is formed so as to also cover the recess 52. In the surface layer 18, a region overlapping the operation region 50 is formed with a surface roughness different from the surrounding area. For example, in the surface layer 18, a region that overlaps the operation region 50 is formed with wrinkles or the like to have a rough surface, and the surrounding region is smoothly formed. The operation area 50 may be roughened without roughening the operation area 50. Further, the operation region 50 may be flush with the surrounding region without providing the recess 52.

  The cover 16 is formed with a display unit 54 that illuminates at least a part of the contour of the operation area 50 and displays the position of the operation area. The display unit 54 is formed in an elongated strip shape extending along one side of the operation area 50. That is, the display unit 54 extends along one side of the recess 52 on the keyboard 20 side, and is formed between the operation area 50 and the keyboard. A portion of the surface layer 18 corresponding to the display unit 54 is formed to be transparent so that light can be transmitted.

  The display unit 54 may be colorless and transparent or colored and transparent. Moreover, the display part 54 is not restricted to the continuous strip | belt shape, may be divided in the middle, or may be intermittently formed in dotted line form.

  Corresponding to the display unit 54, the pointing device 40 has a light source that illuminates the display unit. As shown in FIGS. 2 and 4, a plurality of, for example, four LEDs 56 are mounted as light sources on the printed circuit board 45 of the pointing device 40. These LEDs 56 are provided in parallel with one side of the printed circuit board 45 and at a predetermined interval.

  A light guide plate 58 that guides light from the LEDs 56 to the display unit 54 is mounted on the printed circuit board 45. The light guide plate 58 extends substantially perpendicular to the printed circuit board 45 and extends along one side edge of the printed circuit board 45 while facing the LED 56 and is positioned flush with the input sheet 44. And an elongated strip-shaped exit surface 58b. The light exit surface 58 b of the light guide plate 58 is provided so as to overlap the inner surface of the cover 16 in the recess 46 and faces the display unit 54. The light emitted from the LED 56 is guided by the light guide plate 58, irradiated from the emission surface 58 b toward the display unit 54, and further emitted through the display unit 54 to the outside of the housing 14. Thereby, the upper side of the operation area 50 is illuminated by the display unit 54, and the position of the operation area 50 is displayed.

  The user can visually recognize the operation region 50 by the display unit 54 illuminated by the light source. In addition, since the operation area 50 is formed with a rougher surface than the surrounding area, the operation area 50 can also be recognized by touch. Then, by moving the finger on the operation area 50, the movement of the finger is detected by the input sheet 44 of the pointing device 40, and a desired input operation is performed.

  The display unit 54 is illuminated by turning on the LED 56 when the input operation by the pointing device 40 is valid, and the LED 56 is turned off when the input operation by the pointing device 40 is invalid. As described above, the display unit 54 can display the position of the operation area 50 and can display the status of the pointing device 40.

  As shown in FIGS. 1, 5, and 6, a plurality of operation button display portions 26 are formed side by side on the outer surface 14 a of the housing 14, for example, the rear end portion of the cover 16. The operation button display unit 26 includes, for example, a fast-forward button 26a, a rewind button 26b, a stop button 26c, a pause button 26d, an application launch button 26e, and a mute button 26f that are used during video display. Each of these buttons has a mark having a corresponding shape, and each mark is formed by making a part of the surface layer 18 covering the outer surface of the cover 16 transparent and transmitting light. Each button may be colorless and transparent or colored and transparent.

  Opposing to the plurality of operation button display units 26, a touch pad 60 is provided to overlap the inner surface of the cover 16 and detect an input operation of the operation button display unit. The touch pad 60 includes an elongated rectangular input sheet 60a corresponding to the entire size of the operation button display unit 26, and a printed circuit board 60b constituting a driving unit. The printed circuit board 60b is formed in an elongated rectangular shape having a size corresponding to the input sheet 60a. The input sheet 60a is a detection sheet that senses capacitance, for example, and is affixed to one surface of the printed circuit board 60b. The touch pad 60 is affixed to the inner surface of the cover with the input sheet 60 a overlapping the inner surface of the cover 16.

  In the input sheet 60a and the printed circuit board 60b, circular through holes 62 are formed at positions facing the operation buttons 26a to 26f, respectively. Each through-hole 62 is formed in a diameter smaller than the user's fingertip, for example. LEDs 64 functioning as light sources are respectively disposed in these through holes 62 and are electrically connected to the printed circuit board 60b. The LED 64 is provided to face the plurality of operation buttons 26a to 26f, and illuminates the operation button with light from the inner surface side of the cover 16. When the user touches the operation buttons 26a to 26f from the outside of the cover 16, this touch is detected by the input sheet 60a, and an input operation corresponding to the operation button is performed.

  According to the personal computer 10 configured as described above, since the pointing device 40 is disposed in the housing 14 with the input surface 44a overlapped with the inner surface 14b of the housing 14, the input surface 44a A protective cover or the like for protection is not necessary. Therefore, the assembling property when the pointing device 40 is accommodated in the housing 14 can be improved. Further, the protective cover can be omitted, and the portable computer 10 can be reduced in weight.

  In addition, an operation area 50 for input operation is provided at a position corresponding to the pointing device 17 in the outer surface of the housing 14, and a display unit 54 that optically displays the position of the operation area is provided, thereby providing a pointing device. Even if 40 is accommodated in the housing 14, the position of the input surface 44 a can be easily recognized from the outside of the housing 14. Thereby, operability is improved. In addition, it is not necessary to provide an opening for exposing the pointing device on the outer surface of the housing 14, so that the degree of freedom in designing the housing is increased, and the design of the personal computer 10 can be improved.

  Making the housing 14 made of resin does not affect the operation of the pointing device 40 even if the input surface 44a of the input sheet 44 that senses electrostatic capacitance is stacked so as to contact the housing 14. A palm rest 22 is provided on the outer surface 14 a of the housing 14, and an operation area 50 is provided on the palm rest 22. Therefore, the operability of the pointing device 40 is good.

  As described above, an electronic device can be obtained in which the operation region of the pointing device can be clearly shown, the operability can be improved, and the design of the device can be improved.

  In the first embodiment described above, the roughness of the surface layer of the casing 14 is formed to be different between the operation region 50 and the surrounding region. However, the color or pattern of the surface layer is different from that of the operation region 50 and the surrounding region. Different regions may be formed.

  Next explained is a personal computer according to the second embodiment of the invention. As shown in FIG. 7, according to the present embodiment, the pointing device 40 includes two LEDs 56 as light sources, and these LEDs are mounted on both ends of one side of the printed circuit board 45. The light guide plate 58 is formed in an elongated rectangular plate shape, and is fixed to the one side portion of the printed circuit board 45 in an overlapping manner. The light guide plate 58 is disposed at both ends in the longitudinal direction and extends along one side edge of the printed circuit board 45 and a pair of incident surfaces 58a facing the LEDs 56, and is a long and narrow strip-shaped output that is flush with the input sheet 44. Surface 58b.

  Similar to the first embodiment described above, the pointing device 40 is provided so as to overlap the inner surface of the cover 16 in the recess 46, and the emission surface 58 b of the light guide plate 58 faces the display unit 54. The light emitted from the LED 56 is guided by the light guide plate 58, irradiated from the emission surface 58 b toward the display unit 54, and further emitted through the display unit 54 to the outside of the housing 14. Thereby, the upper side of the operation area 50 is illuminated by the display unit 54, and the position of the operation area 50 is displayed.

  In the second embodiment, other configurations of the personal computer are the same as those of the first embodiment. Even when the pointing device 40 configured in this way is used, the same operational effects as those of the first embodiment can be obtained. In addition, according to the second embodiment, the number of LEDs can be reduced, and the light guide plate 58 can be downsized.

  FIG. 8 shows an operation area 50 of a personal computer according to the third embodiment of the present invention. According to the present embodiment, the display unit 54 that displays the operation region 50 extends along one side of the operation region 50, that is, one side of the recess 52, along the one side of the front end side of the housing 14. It is formed between the switch 42. A portion of the surface layer 18 corresponding to the display unit 54 is formed to be transparent so that light can be transmitted.

  FIG. 9 shows an operation area 50 of a personal computer according to the fourth embodiment of the present invention. According to this embodiment, the two display parts 54 which display the operation area 50 are provided. These display sections 54 extend along two sides extending in the depth direction of the housing 14 on two sides of the operation area 50, that is, two sides of the recess 52. Of the surface layer 18, a portion corresponding to each display portion 54 is formed to be transparent and transmit light.

  FIG. 10 shows an operation area 50 of a personal computer according to the fifth embodiment of the present invention. According to the present embodiment, four display units 54 that display the operation area 50 are provided. These display portions 54 are formed in the form of dots at the four corners of the operation area 50, respectively. Of the surface layer 18, a portion corresponding to each display portion 54 is formed to be transparent and transmit light.

In the third, fourth, and fifth embodiments described above, other configurations of the personal computer are the same as those of the first embodiment described above, including the portions not shown, and the same portions are denoted by the same reference numerals. Detailed description thereof will be omitted. In the third, fourth, and fifth embodiments, the same effects as those in the first embodiment can be obtained.
In the fifth embodiment, since the display unit 54 is formed in a dot shape, a light guide plate may be omitted, and a light source such as an LED may be provided directly at a position facing the display unit 54.

  The present invention is not limited to the above-described embodiment as it is, and can be embodied by modifying the constituent elements without departing from the scope of the invention in the implementation stage. Various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the embodiments. For example, some components may be deleted from all the components shown in the embodiment. Furthermore, constituent elements over different embodiments may be appropriately combined.

  The input surface of the pointing device is not limited to the palm rest but may be placed anywhere on the inner surface of the housing, and the operation area 50 may be provided at a position corresponding to at least a part of the pointing device. The electronic device according to the present invention is not limited to a portable computer and can be widely applied to various electronic devices such as an electronic notebook and a PDA. The light source of the pointing device is not limited to the LED, and other light sources such as a lamp may be used.

10 ... Personal computer, 12 ... Device body, 13 ... Display unit,
14 ... casing, 14a ... outer surface, 14b ... inner surface, 15 ... base, 16 ... cover,
18 ... surface layer, 20 ... keyboard, 22 ... palm rest, 26 ... operation button display,
40 ... pointing device, 44 ... input sheet, 45 ... printed circuit board,
54 ... display unit, 56 ... LED, 58 ... light guide plate, 58a ... entrance surface, 58b ... exit surface

Claims (7)

A substrate,
A detection sheet provided on one surface of the substrate and having an input surface;
A light source mounted on the other surface of the substrate;
A light guide plate that is provided on the substrate and guides light from the light source to the input surface side of the detection sheet;
Pointing device equipped with.   2. The pointing device according to claim 1, wherein the light guide plate has an incident surface facing the light source and an emission surface positioned alongside the input surface of the detection sheet.   The pointing device according to claim 2, wherein the emission surface is formed in an elongated strip shape, extends along one side edge of the incident surface of the detection sheet, and is located on the same plane as the input surface.   The pointing device according to claim 2, wherein the light source includes a plurality of light emitting elements mounted side by side on the other surface of the substrate, and an incident surface of the light guide plate faces the light emitting elements. .   The pointing device according to claim 4, wherein the plurality of light emitting elements are arranged in parallel to and spaced apart from one side of the substrate.   The light source includes a plurality of light emitting elements provided at both longitudinal ends of one side of the substrate, and the light guide plate has a pair of incident surfaces that face the light emitting elements, respectively. The pointing device described in.   The pointing device according to claim 6, wherein the emission surface is formed in an elongated strip shape, extends along one side edge of the incident surface of the detection sheet, and is located on the same plane as the input surface.

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