JP2003075806A - Electronic information display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily dispose a portable electronic information display device on a palm. SOLUTION: For example, a display panel having flexibility or a body formed by bendably connecting solid display panels adjacent to each other with each other by a hinge are used as a display part 2 and a holding belt 4 and the display part 2 are annularly connected so that a hand can be inserted therein. The display part 2 is disposed on the palm side to visually confirm a display screen. When the palm is bended, the display part 2 is easily curved or bent corresponding to the curvature of the palm.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic information display device for displaying electronic information.

[0002]

2. Description of the Related Art Generally, a cathode ray tube (CRT) is used as an electronic information display device for displaying various images such as characters and drawings to be processed by a computer and characters and graphics as a result of being processed by a computer. CR used
There are T displays and liquid crystal displays.

Among them, the CRT display is arranged on the fluorescent film by applying three beams emitted from an electron gun to the fluorescent film on the back side of the tube surface while adjusting the direction by an electromagnet called a polarization yoke. R (red), G (green),
This is a method of emitting fine dots of three colors of B (blue).

On the other hand, in a liquid crystal display, an electrode layer and a liquid crystal layer are laminated on a predetermined solid transparent substrate such as a glass substrate, and a voltage is applied to the liquid crystal layer to cause molecular alignment of the liquid crystal layer. Is displayed to change the image.

[0005]

Since the CRT display irradiates three beams on the back side of the tube surface, a certain space or more is required for beam irradiation, which is disadvantageous in that it is upsized.

On the other hand, a liquid crystal display is a CRT.
It has the advantages of being lighter, thinner, and less power consuming than a display.

However, since the conventional liquid crystal display uses a solid substrate as described above, it cannot be bent or bent. For this reason, there has been an inconvenient aspect as a portable electronic information display device. For example, it is very convenient in terms of portability to arrange it as a portable electronic information display device in the palm, but since the liquid crystal display is solid, it is inconvenient because the liquid crystal display cannot be bent when the palm is to be bent. Is.

Therefore, an object of the present invention is to provide an electronic information display device that is portable and can be easily placed in the palm of the hand.

[0009]

[Means for Solving the Problems] In order to solve the above problems,
The invention according to claim 1 is an electronic information display device for displaying electronic information, comprising: a display unit whose image display surface is bendable or bendable; and a holding belt which holds the display unit, The part and the holding belt are connected in an annular shape so that the hand can be inserted.

The invention according to claim 2 is the electronic information display device according to claim 1, wherein the display part is a display panel which utilizes selective reflection from a cholesteric phase and has flexibility. .

According to a third aspect of the present invention, in the electronic information display device according to the first aspect, the display unit is capable of bending a plurality of solid liquid crystal panels and the liquid crystal panels adjacent to each other. And a hinge to be connected.

An invention according to claim 4 is the electronic information display device according to any one of claims 1 to 3, wherein the electronic information display device is installed at both ends of the display part and can drive the display part. A flexible driving unit is further provided, and both ends of the holding belt are fixed to the driving unit to hold the display unit.

According to a fifth aspect of the invention, there is provided the electronic information display device according to the third aspect, wherein the liquid crystal panels of the display section are four or more solid-state liquid crystal panels arranged in a matrix in a matrix. Is.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION {Embodiment 1} FIG. 1 is a perspective view showing an electronic information display device 1 according to Embodiment 1 of the present invention, FIG. 2 is a perspective view showing a method of using the same, and FIG. It is sectional drawing which shows the flexible display panel 2.

As shown in FIGS. 1 and 2, the electronic information display device 1 includes a flexible display panel (display portion) 2, a pair of driving portions 3 connected to both ends of the display panel 2, and a pair of driving portions 3. A flexible holding belt 4 that holds both drive units 3 is provided.

The display panel 2 has a simple matrix drive type full-color liquid crystal display element 11a as shown in FIG. The liquid crystal display element 11a includes a pair of transparent substrates 1
A liquid crystal element having a liquid crystal display layer 112 sandwiched between 11a and 111b is formed by laminating three liquid crystal elements for blue display 11b, green display liquid crystal element 11g, and red display liquid crystal element 11r. Function as an image forming layer.

The liquid crystal display layer 112 contains a cholesteric liquid crystal material having a selective reflection wavelength in the visible region. The liquid crystal element 11b includes a liquid crystal material that selectively reflects blue light, the liquid crystal element 11g includes a liquid crystal material that selectively reflects green light, and the display element 11r includes a liquid crystal material that selectively reflects red light. . A light absorption layer 11k that absorbs light is provided below these liquid crystal elements.

The liquid crystal display layer 112 selectively responds to a voltage applied to the upper and lower transparent electrode layers 113 that sandwich the liquid crystal display layer, selectively transmitting visible light of a specific wavelength from a transparent state that transmits visible light. Selective reflection state to reflect, or vice versa,
The selective reflection state is switched to the transparent state. Therefore, the specific liquid crystal display layer 112 is brought into the selective reflection state, and
When white light such as natural light is applied to the liquid crystal display element 11a from above, the liquid crystal display layer 11a in the selective reflection state reflects visible light of a specific wavelength, which is observed as a display of each color. When the liquid crystal display layer 112 is in a transparent state, incident light passes through the liquid crystal display layer 112. Therefore, the liquid crystal element corresponding to the color to be displayed is brought into the selective reflection state,
By setting at least the liquid crystal element on the viewpoint side of the liquid crystal element in the transparent state, it is possible to display a desired color. Also, if all liquid crystal elements are made transparent,
Incident light is absorbed by the absorption layer to provide a black display.

As the cholesteric liquid crystal contained in each liquid crystal display layer 112, a liquid crystal material containing cholesteric liquid crystal which itself exhibits a cholesteric phase at room temperature, a liquid crystal material obtained by adding a chiral material to nematic liquid crystal, or the like can be used. For these cholesteric liquid crystals, the planar state is selected when a relatively high pulse voltage is applied,
The focal conic state is selected when a relatively low pulse is applied. When a voltage pulse in the middle is applied, a state in which the planar state and the focal conic state are mixed is selected. When the cholesteric liquid crystal is in the planar state, assuming that the helical pitch of the liquid crystal is P and the average refractive index of the liquid crystal is n, light having a wavelength λ = P · n is selectively reflected by the liquid crystal. When the cholesteric liquid crystal is in the focal conic state, visible light is scattered when the selective reflection wavelength of the liquid crystal is in the infrared region, and when the selective reflection wavelength is shorter than that, the scattering becomes weak and visible light is transmitted. It When the cholesteric liquid crystal is in a state where the planar state and the focal conic state are mixed, a halftone is displayed. Therefore, by setting the selective reflection wavelength to visible light and providing a light absorption layer on the side opposite to the viewing side of the device, display is possible with a specific color (planar state), black (focal conic state), and halftone thereof. You can switch.

Thereby, for example, a blue display liquid crystal element 1
1b and the green display liquid crystal element 11g are in a transparent state in which the cholesteric liquid crystal material is in the focal conic state, and the red display liquid crystal element 11r is in a selective reflection state in which the cholesteric liquid crystal is in a planar state.
Red display can be performed. In addition, the blue display liquid crystal element 11b is set to a transparent state in which the cholesteric liquid crystal material is in the focal conic state, and the green display liquid crystal element 11b.
By displaying g and the red display liquid crystal element 11r in the selective reflection state in which the cholesteric liquid crystal is in the planar state, yellow display can be performed. Similarly, red, green, blue, white, cyan, magenta, yellow, and black can be displayed by appropriately selecting the transparent state and the selective reflection state for each liquid crystal element. Further, by selecting an intermediate selective reflection state as the state of each color liquid crystal element, an intermediate color is displayed and full color display can be performed.

Since the selective reflection from the cholesteric phase is utilized as described above, a polarizing plate and a reflecting plate for reflecting the light by the liquid crystal itself are not required, and the reflection wavelength can be selected by adjusting the liquid crystal material, so that the color No filter is needed.
From this, the display panel 2 can be formed flexibly.

Further, in this display panel 2, the display image which is stable and once written in the two states of the selective reflection state and the transparent state is held semipermanently, so that it has a memory property and power saving is possible. . Another feature is that the display area can be easily partially rewritten.

Here, a specific structure of the liquid crystal display element 11a will be described. On the transparent substrates 111a and 111b, a plurality of strip-shaped transparent electrodes 113 arranged in parallel at fine intervals are formed, and the upper and lower transparent substrates 111a and 111b are formed on the surface on which the transparent electrodes 113 are formed. A bonded resin structure 114 having a columnar cross-section is arranged and supports both transparent substrates 111a and 111b. Transparent substrate 111
A spacer 115 is arranged between a and 111b to define a gap between the transparent substrates 111a and 111b. The liquid crystal display layer 112 includes a resin structure 114, spacers 115,
And a liquid crystal material 116 filled between them.

On both transparent substrates 111a and 111b, the transparent electrodes 113 are arranged so as to face each other at right angles to each other, and the regions where the transparent electrodes 113 overlap each other form pixels. Further, between the transparent substrates 111a and 111b,
A seal material 117 for containing a liquid crystal material is provided on the outer edge portions of the transparent substrates 111a and 111b.

An insulating film 118 and an insulating film 118 are formed on the surfaces of the transparent substrates 111a and 111b on which the transparent electrode 113 is formed.
An alignment control film 119 is provided on the above. As the insulating film 118, an inorganic film such as silicon oxide or an organic film such as polyimide resin or epoxy resin is provided to prevent short circuit between the upper and lower substrates and improve reliability of the liquid crystal element. Further, as the orientation control film 119, a film represented by polyimide is used.

As the transparent substrates 111a and 111b, besides glass substrates, flexible substrates such as polycarbonate, polyether sulfone (PES), polyethylene terephthalate, etc. can be used. By using this flexible substrate, it becomes easy to give the display panel 2 flexibility.

ITO (Indiu) is formed on the transparent electrode 113.
m Tim Oxide), a transparent conductive film, a metal electrode such as aluminum and silicon, amorphous silicon, BSO (Bismuth Silicon).
A photoconductive film such as n oxide) can be used.

The drive unit 3 includes the transparent electrode 11 of the display panel 2.
3 is a drive circuit that selects 3 and applies a voltage to drive the display panel 2 in a matrix. The drive unit 3
Is connected to a portable computer (not shown) held by the wearer on the waist or the like through a predetermined cable adopting a standard communication system such as USB, and responds to an image signal from the portable computer. The display panel 2 is driven so that the displayed image is displayed. The drive unit 3 is configured as a flexible circuit, and has the same flexibility as the display panel 2 and the holding belt 4.

The holding belt 4 is made of flexible leather or the like, and when the display panel 2 is held on the palm side as shown in FIG. The display panel 2 and the drive unit 3 are held by. And
By connecting the display panel 2, the drive unit 3, and the holding belt 4, the electronic information display device 1 is configured as a flexible annular body.

In the electronic information display device 1 having the above structure, the display panel 2, the holding belt 4, and the drive unit 3 form an annular body, and therefore a hand is inserted into the annular body. At this time, the display panel 2 is positioned on the palm side and the holding belt 4 is positioned on the back side of the hand.

Then, for example, a portable computer installed on the waist or the like is activated to visually recognize the image displayed on the display panel 2.

Here, in the electronic information display device 1, not only the holding belt 4 but also the display panel 2 and the driving section 3 are provided.
Also has flexibility, so when you bend your palm,
The display panel 2 and the drive unit 3 are easily curved according to the curvature. Therefore, it is possible to provide the electronic information display device 1 that easily fits in the palm of the hand.

Further, since the display panel 2 is located on the palm, the palm can be easily moved to a position where it is easily visible, and the state of good visibility can always be maintained.

Second Embodiment FIG. 4 is a diagram showing an electronic information display device 31 according to a second embodiment of the present invention. In FIG. 4, elements having the same functions as those in the first embodiment are designated by the same reference numerals.

Electronic information display device 31 of this embodiment
As shown in FIG. 4, a pair of solid-state liquid crystal panels (liquid crystal display: display unit) 32a, 3 using glass substrates or the like are used.
2b is connected by a hinge 33 so as to be foldable (flexible), and an image of one frame is displayed on a pair of left and right liquid crystal panels 32.
a and 32b are displayed separately. This allows
When the liquid crystal panels 32a and 32b are placed on the palm of the hand, both the liquid crystal panels 32a and 32b are folded according to the bending of the palm.

The drive unit 3 and the holding belt 4 for matrix-driving the liquid crystal panels 32a and 32b are the same as in the first embodiment.
The same as is used.

In the electronic information display device 31 having such a configuration, since the pair of left and right liquid crystal panels 32a and 32b are foldable, when the palm is bent, both liquid crystal panels 32a and 32b are bent according to the curvature. Is easy to fold. Therefore, it is possible to provide the electronic information display device 31 that easily fits in the palm.

Further, the liquid crystal panels 32a, 32 are provided on the palm.
Since b is located, the palm can be easily moved to a position where it is easy to visually recognize, and a state with good visibility can always be maintained.

{Third Embodiment} FIG. 5 is a diagram showing an electronic information display device 41 according to a third embodiment of the present invention. In FIG. 5, elements having the same functions as those in the first and second embodiments are designated by the same reference numerals.

Electronic information display device 41 of this embodiment
Connects four liquid crystal panels (liquid crystal displays: display units) 42a to 42d arranged in a matrix in the vertical and horizontal directions with a hinge 43 to connect the liquid crystal panels 42a to 42d in the horizontal direction. It is possible to fold (bend) both vertically and vertically.

Each of the liquid crystal panels 42a to 42d has a solid structure using a glass substrate or the like. Of these liquid crystal panels 42a to 42d, the two liquid crystal panels 42a, 42b arranged on the upper side are driven by the upper drive unit 3a directly connected to them, and the two liquid crystal panels arranged on the lower side. The liquid crystal panels 42c and 42d are driven by the lower drive unit 3b directly connected to them.

Since the other structure is the same as that of the second embodiment, the description thereof will be omitted.

Also with this electronic information display device 41, when the user bends the palm of the hand, both liquid crystal panels 42a to 42d are easily folded according to the curvature, so that the electronic information display device 41 that is easily fit in the palm of the hand is provided. can do.

In the second and third embodiments,
Although it has a solid structure using a glass substrate,
Instead of this, a flexible display panel as in Embodiment 1 may be used.

In the third embodiment, more than four liquid crystal panels may be arranged in a matrix.

Further, in each of the above embodiments, the electronic information display device has been described as a device for displaying image information.
As long as it displays electronic information that has been electronically processed or stored in a predetermined storage device, it can be applied to any display such as displaying only characters.

[0047]

According to the invention described in claims 1 to 5, since the display portion and the holding belt are connected in an annular shape so that the hand can be inserted, the display portion is arranged in the palm. By doing so, a state with good visibility can be secured simply by moving the palm to a position where it is easily visible. In addition, since the image display surface of the display unit is bendable (Claim 2) or bendable (Claims 3 and 5), when the palm is bent, the display unit can be easily moved according to the curvature. Can be curved to Therefore, it is possible to provide an electronic information display device that easily fits in the palm of the hand.

According to the fourth aspect of the present invention, since the drive unit for driving the display unit also has flexibility, when the palm is bent, not only the display unit but also the display unit is changed according to the curvature. It is possible to provide an electronic information display device in which the drive section can be easily bent and which easily fits in the palm of the hand.

[Brief description of drawings]

FIG. 1 is a perspective view showing an electronic information display device according to a first embodiment of the present invention.

FIG. 2 is a perspective view showing a usage state of the electronic information display device according to the first embodiment of the present invention.

FIG. 3 is a sectional view showing a display portion of the electronic information display device according to the first embodiment of the present invention.

FIG. 4 is a perspective view showing a display section of an electronic information display device according to a second embodiment of the present invention.

FIG. 5 is a perspective view showing a display section of an electronic information display device according to a third embodiment of the present invention.

[Explanation of symbols]

1,31,41 Electronic information display device 2 Display panel 3 drive 4 holding belt 32a, 32b, 42a to 42d liquid crystal panel 33,43 hinge 3a drive unit 3b drive

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) G09F 9/35 G09F 9/35 9/40 301 9/40 301 302 302 302 H04N 5/64 511 H04N 5/64 511B (72) Inventor Naoki Nishida 2-3-13 Azuchi-cho, Chuo-ku, Osaka-shi, Osaka Prefecture Osaka International Building Minolta Co., Ltd. (72) Hideki Nagata 2-3-3 Azuchi-cho, Chuo-ku, Osaka-shi, Osaka F term in Osaka International Building Minolta Co., Ltd. (reference) 2H088 EA22 GA03 HA01 2H089 HA33 HA40 TA01 UA09 2H090 JB03 5C094 AA15 BA03 BA43 CA19 DA01 DA04 DA05 DA06 EA04 EA07 HA08 5G435 AA18 BB12 EE10 EE16 EE17 EE50 EE12

Claims (5)

[Claims] 1. An electronic information display device for displaying electronic information, comprising: a display unit whose image display surface is bendable or bendable; and a holding belt which holds the display unit, wherein the display unit and the holding belt. An electronic information display device, characterized in that the device is connected in a ring shape so that a hand can be inserted. 2. The electronic information display device according to claim 1, wherein the display section is a flexible display panel utilizing selective reflection from a cholesteric phase. Display device. 3. The electronic information display device according to claim 1, wherein the display unit includes a plurality of solid-state liquid crystal panels and a hinge that bendably connects the liquid crystal panels adjacent to each other. Information display device. 4. The electronic information display device according to claim 1, further comprising flexible drive units installed at both ends of the display unit to drive the display unit. An electronic information display device, comprising: the display unit, wherein both ends of the holding belt are fixed to the drive unit. 5. The electronic information display device according to claim 3, wherein the liquid crystal panel of the display unit is four or more solid liquid crystal panels arranged in a matrix in a matrix. Electronic information display device.