JP2011076560A - Information processing apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a portable information processing apparatus for enabling a user to select a GUI displayed in an information display part while directly recognizing the GUI with eyes without disturbing the GUI with a finger during touching and selecting the GUI. <P>SOLUTION: The information processing apparatus 1 includes: a display device 3 for displaying information; and a touch input type sensor 4. The display device 3 is transparent, and on at least one face, a transparent touch input type sensor 4 is provided. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an information processing apparatus, and more particularly, to a portable information processing apparatus that is lightweight, small, and excellent in operability.

  In recent years, along with the miniaturization of electronic components and the development of data communication technology, development of compact and portable information devices has been active. In the development of these portable information devices, downsizing of the devices is particularly important. In a portable information device, when an information display unit and an information input unit such as a keyboard are arranged on the same plane, in order to reduce the size of the device, the display unit is reduced or the information input unit is reduced. There was a need to do. Therefore, for example, a touch input type display (touch panel) that displays a graphic user interface (GUI) instead of a keyboard on the information display unit, and selects information with a finger to input information is adopted.

  In such a touch input type information device, since the GUI of the display unit is touched with a finger, the operator's finger covers the GUI when inputting, and the GUI cannot be directly visually recognized when touching. For example, when displaying a plurality of GUIs with a keyboard layout on the display unit, the GUI corresponding to each key is small, and it is difficult to input an accurate key. Also, it is difficult to touch such a small GUI lightly and it is difficult to input information.

  As a countermeasure, a display has been devised that inputs from the back of the display and solves the problem of GUI shielding by the finger. For example, Non-Patent Document 1 proposes a display in which a touch sensor and a camera are provided on the back of an opaque liquid crystal display. This display captures a finger operation on the back of the display with a camera, displays the image superimposed on screen information by image processing, creates a situation in which the display is virtually transparent, and shields the GUI when a finger touches The problem is solved.

Daniel Widdor, Clifton Forests, Patrick Baudish 3, John Barnwell, Chia Shen: LucidTouch: A See-Through Mobile Device, 200

  By the way, in the display of nonpatent literature 1, the finger operation in the back of a display is photoed with the camera provided in the back. Therefore, there is a possibility that the apparatus rear camera may be damaged when carrying the information processing apparatus. In addition, a special image processing mechanism is necessary to display the finger operation on the back side superimposed on the display information.

  Therefore, in view of the above problems, the present invention does not require a special mechanism such as a camera or image processing, and directly touches the GUI without interrupting the GUI when the GUI displayed on the information display unit is touch-selected. An object of the present invention is to provide a portable information processing apparatus that can be selected.

  The configuration of the present invention made to achieve the above object is as follows.

  That is, the information processing apparatus according to the present invention includes a display device for displaying information and a touch input sensor, the display device is transparent, and a transparent touch input sensor is provided on at least one surface thereof. Is an information processing apparatus.

  According to the present invention, the touch input sensor is provided on one surface of the display device, and the display device and the touch input sensor are transparent. Therefore, when a touch input type sensor is provided on the back side of the display device, touch input from the back side of the device is possible, and the touch input can be selected and operated while directly viewing the GUI without the finger blocking the GUI. A portable information processing apparatus can be provided. The information processing apparatus of the present invention does not require a special mechanism such as a camera or image processing.

1 is a plan view schematically showing an embodiment of an information processing apparatus according to the present invention. It is sectional drawing which shows typically the A-A 'cross section of the information processing apparatus of FIG. It is a schematic sectional drawing at the time of using a transparent organic EL display as a display element with which the information processor concerning the present invention is provided. It is a schematic sectional drawing at the time of using a transparent organic EL display as a display element with which the information processor concerning the present invention is provided.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings, but the present invention is not limited to the embodiments.

  First, the configuration of an embodiment of an information processing apparatus according to the present invention will be described with reference to FIG. FIG. 1 is a plan view schematically showing an embodiment of an information processing apparatus according to the present invention. FIG. 2 is a cross-sectional view schematically showing an A-A ′ cross section of the information processing apparatus of FIG. 1. 1 and 2, 1 is an information processing device, 2 is a housing, 3 is a display device, 4 is a touch input sensor, and 5 is an operator of the information processing device 1.

  As shown in FIGS. 1 and 2, the information processing apparatus 1 according to the present embodiment includes a display device 3 that displays information and a touch input sensor 4, and touches at least one surface of the display device 3. An input type sensor 4 is provided.

  As the display device 3, a transparent display that can visually recognize the state of the back surface of the information processing device 1 or an object on the back surface is used. The transparent display 3 is not particularly limited, and a widely used transparent display, see-through display, or the like can be applied.

  In particular, when a transparent organic EL display is applied as the display 3, it has better color reproducibility, visibility by viewing angle, and responsiveness to moving images, and can display high quality images compared to other types of transparent displays. Therefore, it is preferable. In addition, when an organic EL display is applied, it is possible to realize a display device that is thinner, lighter, and consumes less power than other types of transparent displays. Furthermore, since the organic EL display can be driven at a low voltage of about 3 to 5 V and has low power consumption, application to the portable information processing apparatus 1 is particularly preferable.

  In the present invention, “transparent” means having a transmittance of 10% or more with respect to visible light, and is a concept including not only colorless and transparent but also translucent and colored and transparent.

  The touch input type sensor 4 is not particularly limited, and a resistance film type (pressure-sensitive type) that detects a change in resistance value that is widely used and a capacitive type touch sensor can be used. . Moreover, as a base material of the touch input type sensor 4, various types of touch input type sensors, such as a glass plate, a plastic plate, and a resin film, are applicable.

  The operator 5 can visually recognize the finger 6 operated on the back side of the apparatus through the display 3 and the touch input type sensor 4, and can see which part of the display surface is touched from the front side. . It is more preferable to configure as a system in which some mark is superimposed and displayed at the position in addition to the original display information based on the position information touched with the finger 6.

  The combined transmittance of the transparent display 3 and the touch input sensor 4 is such that the operator 5 can visually recognize the operation of the finger 6 that is input from the back side, that is, can transmit the finger 6 like a shadow. It is sufficient that the rate is secured. Therefore, the transmittance | permeability which put both together should just be 10% or more. The upper limit of the transmittance is not particularly limited, and when the information displayed on the display screen is overlapped with an object on the back and the information becomes difficult to see, the transmittance is adjusted to about 50% or less. Since the contrast of display information is improved, it is preferable from the viewpoint of visibility.

  The adjustment of the transmittance may be performed by adjusting the transmittance of the display 3 or the touch input type sensor 4 itself, or the transparent display 3 and the touch input type sensor 4 are configured with a high transmittance, and the diffusion plate. Alternatively, the transmittance may be adjusted by arranging another member. The diffusion plate can be installed between the display 3 and the touch input type sensor 4 or outside the touch input type sensor 4 on the back side of the information processing apparatus 1. Alternatively, a mechanism that allows the diffusion plate to be attached to and detached from the touch input type sensor 4 on the back surface of the information processing apparatus 1 is provided, and the diffusion plate can be replaced so that a diffusion plate with various transmittances can be used. Good. In this case, the operator 5 can select an appropriate diffusion plate according to the environment at the time of use and adjust the transmittance of the display screen. For example, if the background is bright, use a diffuser with a low transmittance, and if the background is dark, use a diffuser with a high transmittance, or remove the diffuser, depending on the external environment. The ease of visual recognition of information can be adjusted.

  It is also possible to adjust the visibility of display information in accordance with the external environment by adjusting the display brightness of the display. Here, as a specific method of adjusting the display brightness of the display, there is a method of providing an arbitrary display brightness adjustment mechanism that can be operated by the user, or mounting a brightness sensor at an arbitrary location of the housing 1. There is a method of providing a mechanism that can automatically adjust the display brightness according to the environment.

  In addition, when an antireflection coating such as AR is applied to the surface of the display 3 or the touch input type sensor 4, for example, when the information processing apparatus 1 is used outdoors, external light is reflected on the screen or the sensor unit. Since it can prevent, it is preferable from a viewpoint of outdoor visibility.

  Moreover, you may provide a light absorptive black sheet instead of the diffuser plate mentioned above. When a light-absorbing black sheet is provided, external light transmitted through the display is absorbed and reflection of external light to the user side is suppressed, so that the contrast of display information is improved. For this reason, it is preferable from the viewpoint of outdoor visibility.

  Furthermore, in the present embodiment, the case where the touch input sensor 4 is arranged on at least one (rear side) of the display 3 is exemplified, but the touch input sensor 4 can be arranged on both surfaces of the display 3. In this case, in addition to touch input from the back surface of the information processing apparatus 1, touch input from the surface of the information display unit is also possible, so that variations in input methods can be increased.

  An information processing unit (not shown) is provided inside the housing 2, and this information processing unit is electrically connected to the display 3 and the touch input type sensor 4. The selected position information from the touch input type sensor 4 is sent to this information processing unit, and is compared with the position (address) information of the GUI on the display surface, and information corresponding to the corresponding GUI is input to the device.

  In the information processing apparatus 1 including the transparent display 3 and the touch input type sensor 4 as described above, the operator 5 can check the display information while visually recognizing the situation and objects on the back of the information display apparatus 1. Become. In particular, when the touch input type sensor 4 is arranged on the back side of the information display surface of the display 3 and information processing corresponding to the selection position information by the back touch and the display information is performed, through the GUI on the display screen, Touch input is possible while directly confirming the movement of the finger 6 on the back. As a result, the finger 6 obscures the GUI during touch selection, which is a problem in the conventional touch input type information processing apparatus, requires a special mechanism such as a camera or image processing, and is used for carrying the device. At this time, it is possible to solve the risk of damage to the camera or the like.

  Next, the structure of the full-color transparent organic EL display 3 applied to the information processing apparatus 1 of this embodiment will be described in more detail. 3 and 4 are schematic cross-sectional views when a transparent organic EL display is used as a display element included in the information processing apparatus according to the present invention. 3 and 4, 10 is a substrate, 11 is a TFT drive circuit, 12 is a wiring portion between the drive circuit and electrodes, 13 is a planarizing film, 14 is an electrode on the substrate side, and 15 is an element isolation film. 16 is a hole transport layer, 17 is a red light emitting layer, 18 is a green light emitting layer, 19 is a blue light emitting layer, 20 is an electron transport layer, 21 is an electron injection layer, and 22 is an electrode opposite to the substrate 10. , 23 is dry nitrogen, 24 is an element package, and 25 is a metal electrode.

  The display 3 is a display having a plurality of light emitting pixels made of organic light emitting elements, and includes a drive circuit that controls light emission of each of the light emitting pixels. The display 3 includes a plurality of pixel units arranged in a matrix. Each pixel unit includes a plurality of pixels having different emission colors, for example, a red light emitting pixel 17, a green light emitting pixel 18, and a blue light emitting pixel 19. Composed.

  By passing a current through the electrode 14 on the substrate side of the organic EL display 3 as an anode and the electrode 22 on the opposite side of the substrate as a cathode, holes injected from the electrode 14 and electrons injected from the electrode 22 are emitted from the light emitting layer. Recombination occurs at 17, 18, and 19 to produce light emission.

  In the organic EL display 3 shown in FIG. 3, a transparent substrate is used as the substrate 10, and the planarizing film 13 is formed of a transparent resin material. Further, the pair of electrodes 14 and 22 on the substrate 10 are transparent electrodes. Thereby, the light emitting pixel portion becomes transparent. A TFT driving circuit 11 and a driving wiring part 12 are provided in a part other than the light emitting pixel part, and these are made of a metal material such as aluminum having a thickness of about several hundred μm. is there. Therefore, in the layout of the drive circuit 11, it is possible to adjust the transmittance of the organic EL display 3 by adjusting the ratio of the opaque portion such as the wiring portion 12 and the transparent pixel portion. However, as the size ratio (aperture ratio) of the pixel portion with respect to the entire display size is larger, the light emission luminance can be lowered and the life of the organic light emitting element can be extended. Therefore, the aperture ratio is preferably at least 20% or more, more preferably 40% or more from the viewpoint of extending the life of the information processing apparatus.

  Moreover, in the organic EL display 3 shown in FIG. 4, transparency may be ensured in the region of the element isolation film 15 and the pixel openings may be opaque. Therefore, an opaque electrode such as the metal electrode 25 may be disposed under the electrode 14. As described above, since transparency is ensured in the region of the element isolation film 15, it is preferable that the TFT drive circuit 11 and the wiring have a layout that avoids even a little under the element isolation film 15.

  Moreover, the TFT drive circuit 11 and the wiring part 12 can be made of a transparent oxide semiconductor, and all the areas on the display can be made transparent.

  The substrate 10 is not particularly limited as long as it is transparent, and various materials such as a glass plate, a ceramic plate, a quartz plate, and a plastic plate can be used. Further, when a flexible sheet such as a resin sheet is used as the substrate 10 and the casing portion of the apparatus is similarly formed in a flexible structure, the flexible information processing apparatus 1 can be manufactured. Further, the transmittance of the display 3 can be adjusted by selecting the material of the substrate 10.

  As the electrodes 14 and 25 on the substrate side and the transparent electrode 22 on the opposite side of the substrate, an oxide conductive film, specifically, a compound film (ITO) of indium oxide and tin oxide, or a compound of indium oxide and zinc oxide A film (IZO) or the like can be used. Here, “transparent” means having a transmittance of 10% or more with respect to visible light, and as described above, is a concept including not only colorless and transparent but also translucent and colored and transparent. . Therefore, since the electrode is a thin film, the light transmittance is good, and a semi-transparent metal thin film may be used. However, in terms of enhancing transparency, the extinction coefficient κ is preferably 0.05 or less, and more preferably κ is 0.01 or less. These transparent electrodes 14 and 22 may be formed by any method, for example, by sputtering.

  The organic compound used for the hole transport layer 16, each color light emitting layer 17, 18, 19, and the electron transport layer 20 may be composed of a low molecular material, a polymer material, or both, and is not particularly limited. . A known material can be used as needed.

  For the electron injection layer 21, for example, a material capable of injecting electrons from a transparent electrode 22 such as ITO or IZO is selected. In general, the transparent electrode 22 such as ITO or IZO has a relatively high work function. In order to inject electrons more easily from the transparent electrode 22, an electron injection configured to contain 0.1 to several tens of percent of an alkali metal, an alkaline earth metal, or a compound thereof in an electron transporting organic compound material The layer 21 is preferable.

  In particular, the electron injection layer 21 which is an organic compound layer in which cesium carbonate is contained in an electron transporting organic compound can easily inject electrons from a transparent electrode 22 such as ITO or IZO having a high work function. Particularly preferred. In addition, the electron injection layer 21 containing cesium carbonate also has a feature that hardly affects the driving voltage even when the electron injection layer 21 is thickened to about ˜100 nm. For this reason, it is particularly preferable to form the electron injection layer as thick as possible because the film formation damage of the transparent electrode 21 that is formed thereafter can be reduced.

  Furthermore, cesium carbonate is easy to handle. Generally, alkali metals and alkaline earth metals are highly reactive and cannot be easily handled in air. Therefore, in order to contain such a metal in the electron injection layer 21, it has been necessary to use a special dispenser for vacuum deposition. If cesium carbonate is used, such a special preparation is not required, and since it is possible to easily inject electrons from a high work function electrode such as ITO, a transparent organic EL display indispensable for the information processing apparatus 1 of the present invention. 3 is particularly important.

  As described above, the electrode 22 is not necessarily a general transparent conductive film, and may be a thin metal film. Further, as long as the region of the element isolation film 15 is transparent, the electrode (here, the anode) for each pixel may be opaque.

  The layer made of these organic compounds is generally dissolved in a vacuum deposition method, ionization deposition method, sputtering, plasma, or an appropriate solvent, and a known coating method (for example, spin coating, dipping, casting method, ink jet method, etc. ) To form a thin film.

  Reference numeral 23 denotes dry nitrogen, which fills the space between the organic light emitting element and the element package 24. The element package 24 is provided for the purpose of protecting the element from oxygen and moisture in the external environment. The element package 24 is not particularly limited as long as it is a transparent material like the substrate 10, but a glass plate, a ceramic plate, a plastic plate, or the like can be applied. As in the case of the substrate 10, it is possible to adjust the transmittance of the display 3 by changing the transmittance of the element package 24. Further, if necessary, a desiccant such as calcium oxide is provided in a portion of the non-display area inside the element package 24. Oxygen and moisture entering the package 24 can be absorbed from the outside environment, which is preferable from the viewpoint of improving the reliability of the organic EL display 3.

  Further, there is no gas layer such as dry nitrogen 23, and the surface of the display may be directly covered with a resin or an inorganic film to block external oxygen and moisture.

  As described above, the touch input type sensor 3 disposed on the back side of the substrate 10 may be a transparent type in addition to the resistance type and the capacitance type.

  The preferred embodiment of the present invention has been described above. However, this is merely an example for explaining the present invention, and various embodiments different from the above-described embodiment may be implemented without departing from the gist of the present invention. Can do.

  For example, in the above embodiment, one pixel of each color is illustrated as an example, but the number of pixels of the display is not particularly limited, and a display with various numbers of pixels can be used as necessary. The larger the number of pixels, the higher the resolution, and the higher the quality of the information display, the more preferable.

  In the above embodiment, only the case where the touch input sensor of the information processing apparatus 1 is touch-operated with the finger 6 of the operator 5 has been described. However, an input method using a touch pen like a personal information terminal (PDA) is adopted. It doesn't matter.

  Hereinafter, although an example is given and a display module concerning the present invention is explained still in detail, the present invention is not limited to these examples.

[Example 1]
In Example 1, the information processing apparatus 1 including the transparent organic EL display of FIG. 3 was produced by the method described below.

  As shown in FIG. 3, a TFT driving circuit 11 made of low-temperature polysilicon was formed on a glass substrate 10, and a planarizing film 13 made of acrylic resin was formed thereon to form a substrate. On top of this, as a transparent electrode 14 on the substrate side, ITO was formed by sputtering to a thickness of 38 nm. Subsequently, the transparent conductive film was patterned for each pixel to form an anode.

  Further, an element isolation film 15 was formed with an acrylic resin to prepare a substrate. This was ultrasonically cleaned with isopropyl alcohol (IPA), then boiled and dried. Then, after UV / ozone cleaning, an organic compound was deposited by vacuum deposition.

First, as the hole transport layer 16, α-NPD was formed in a thickness of 87 nm on all pixels. The degree of vacuum at this time is 1 × 10 ⁻⁴ Pa and the deposition rate is 0.2 nm / sec.

  Next, the red light emitting layer 17, the green light emitting layer 18, and the blue light emitting layer 19 were formed with thicknesses of 30 nm, 40 nm, and 25 nm, respectively, using a shadow mask.

Subsequently, bathophenanthroline (Bphen) was formed to a thickness of 10 nm by vacuum deposition as an electron transport layer 20 common to all pixels. The degree of vacuum during vapor deposition was 1 × 10 ⁻⁴ Pa, and the film formation rate was 0.2 nm / sec.

Thereafter, Bphen and Cs ₂ CO ₃ were co-deposited (weight ratio 90:10) as a common electron injection layer 20 to a thickness of 40 nm. The degree of vacuum during vapor deposition was 3 × 10 ⁻⁴ Pa, and the film formation rate was 0.2 nm / sec.

  Next, the substrate on which the electron injection layer 20 was formed was moved to a sputtering apparatus while maintaining a vacuum state, and ITO was formed as a transparent electrode 22 with a thickness of 30 nm.

  Further, the substrate on which the film was formed up to the transparent electrode 22 was moved to a glove box filled with dry nitrogen, and the organic light emitting element portion on the substrate was covered with an element package 24 made of glass to obtain a transparent organic EL display.

  Subsequently, a capacitive touch sensor 3 of the electrostatic capacity type was attached to one surface of the transparent organic display.

  Next, the organic EL display 3 with the touch input sensor 4 attached thereto was incorporated into the housing 2 and connected to an information processing unit provided inside the housing 2 to obtain the information processing apparatus 1.

  According to the information processing apparatus 1 of the first embodiment, when selecting a GUI by touching from the back of the apparatus, an operator can directly visually confirm which GUI is selected without covering the GUI with a finger. Is possible. Thereby, even in the case of a fine GUI, it is possible to select them accurately and speedily and to input information to the device.

[Example 2]
In Example 2, it was produced with the same configuration as the information processing apparatus 1 of Example 1 except that a diffuser plate with a transmittance of 30% was provided outside the touch input sensor on the back side.

  Since the information processing apparatus according to the second embodiment includes a diffusion plate on the back surface, when displaying information on the display, it is possible to reduce the visibility of an object on the back surface overlapping the display information. It was possible to visually recognize.

  1: Information processing device, 2: Housing, 3: Display, 4: Touch input sensor, 5: Operator, 6: Finger, 10: Substrate, 11: TFT drive circuit, 12: Wiring unit, 13: Planarization film , 14: transparent electrode on substrate side, 15: element separation film, 16: hole transport layer, 17: red light emitting layer, 18: green light emitting layer, 19: blue light emitting layer, 20: electron transport layer, 21: electron injection layer 22: Electrode opposite to the substrate, 23: Dry nitrogen, 24: Device package, 25: Metal electrode

Claims (6)

A display device for displaying information;
A touch input sensor,
An information processing apparatus, wherein the display device is transparent, and a transparent touch input sensor is provided on at least one surface thereof.   The information processing apparatus according to claim 1, wherein the touch input sensor is provided on at least a back side of the display device.   The information processing apparatus according to claim 1, wherein the display device is an organic EL display including an organic light emitting element. The information processing apparatus according to claim 3, wherein at least one organic light-emitting element constituting the organic EL display includes an organic compound layer containing cesium carbonate.   5. The information processing apparatus according to claim 1, wherein the display device includes a diffusion plate that adjusts a light transmittance of the display device on a back side thereof.   The information processing apparatus according to claim 5, wherein the diffusing plate is replaceably disposed on a back side of the display device.

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