JP2000356964A - Display member, display device, measuring instrument and timepiece - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a timepiece which is capable of surely making display even under the different environments, a under visible light or under the dark and under irradiation with UV rays and in which expressing and decorative characteristics are improved. SOLUTION: A display plate 2 having a light guide plate 6 is disposed at the timepiece 1 provided with a timepiece device 4 having the hour hand 14 and the minute hand 15. A light emitting diode 3 which irradiates the display plate with near UV rays having a light emitting peak at 350 to 420 nm is disposed on the rear surface side. The front surface of the light guide plate 6 is provided with one layer of a display layer 9. The display layer is formed of a light emitting layer 10 which displays a background and contains the light emitting members, a first mixed layer 11 which displays characters and scale and contains coloring pigments and photostimulable members and a mixed layer 12 which displayed patterns and contains the photostimulable members. The characters are displayed by the first mixed layer 11 under the visible light and the characters and patterns are displayed by the first mixed layer 11 and the second mixed layer 12 under the dark. The background, characters and patterns are displayed by the light emitting layer 10, the first mixed layer 11 and the second mixed layer 12 by the light emission of the light emitting diode 3. The display may be surely executed under the respective environments.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display member, a display device, a measuring device, and a timepiece for displaying a pattern such as a character or a figure under visible light, in the dark, and under ultraviolet irradiation.

[0002]

2. Description of the Related Art Conventionally, as a timepiece, a luminous paint containing a luminous member on the surface of a dial is applied to predetermined characters representing time and applied to a pointer indicating the character, so that the time can be displayed even in darkness. It has been known.

However, when a luminous member is applied to the dial, the luminescent color is limited, and since it is almost milky white under visible light, it has poor expressiveness and decorativeness.

Therefore, a configuration is known in which, for example, a fluorescent paint containing a fluorescent member is applied to a dial or a pointer, and a picture or the like is displayed by a plurality of light emission by irradiating ultraviolet rays from a black light.

However, the fluorescent member is almost milky white under visible light, emits light only in a specific place such as a playground where ultraviolet rays are irradiated, and has a limited expressiveness and decorativeness.

[0006] Timepieces equipped with an ultraviolet lamp for irradiating ultraviolet rays are also known. However, there is a limit to the miniaturization of devices for irradiating ultraviolet lamps. For example, they can be applied to portable watches such as watches and pocket watches. It is difficult to improve versatility.

On the other hand, a portable timepiece that illuminates a dial using an EL (Electroluminescence) element is known.
Since the EL element is limited to predetermined monochromatic light emission, it is difficult to diversify the display and the color tone, and it is difficult to express a detailed pattern such as a character or a symbol. Furthermore, since power consumption is large and life is short, it is difficult to use for a long time, and versatility cannot be improved.

[0008]

As described above, when a luminous member is applied to a dial, the luminescent color is limited, and since it is almost milky white under visible light, the expressiveness and decorativeness are improved. Poor. In the case of using a fluorescent paint containing a fluorescent member, the fluorescent member is substantially milky white under visible light, emits light only in a specific place such as a playground where ultraviolet rays are irradiated, and has expressiveness and decoration. There are restrictions on gender. Furthermore, in watches equipped with an ultraviolet lamp that emits ultraviolet light,
The size of an apparatus for irradiating an ultraviolet lamp is limited, and it is difficult to apply the apparatus to a portable timepiece such as a wristwatch or a pocket watch, and versatility cannot be improved. Further, in the case of using an EL element, since the EL element is limited to a predetermined monochromatic light emission, it is difficult to diversify the display and color tone, and it is difficult to express a detailed pattern such as a character or a symbol, and the expression and decoration. However, there is a problem that it is difficult to use for a long time because power consumption is large and the life is short, and versatility cannot be improved.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object to provide a display member, a display device, a measuring device, and a timepiece, which can surely display an image and improve expression or decoration.

[0010]

According to a first aspect of the present invention, there is provided a display member, comprising: a base having a display surface; a color pigment provided on the surface of the base and showing a color under visible light; A color-forming layer that contains and displays at least one of a member and a light-emitting member that emits light by irradiation with ultraviolet light, and the color-forming layer that contains at least one of the color pigment, the light-storing member, and the light-emitting member; And a display layer provided with another color-forming layer for displaying light and dark different from the light and dark to be displayed.

[0011] The display surface of the substrate contains at least one of a color pigment which shows a color under visible light, a light storage member having a light storage function, and a light emitting member which emits light by irradiation with ultraviolet light, and displays a color. In order to provide a display layer comprising a layer and a color pigment, another light-emitting layer containing at least one of a light-storing member and a light-emitting member and displaying the light and dark different from the light and dark displayed by the color-forming layer, the light-and-dark environment is different. The display can be made with either the color-forming layer or another color-forming layer even below, so that the display contents can be reliably recognized even in environments with different light and darkness.For example, by making the display by the color-forming layer different from the display by other color-forming layers , Expressiveness and decorativeness are improved.

According to a second aspect of the present invention, there is provided a display member comprising: a base having a display surface; a color pigment provided on the surface of the base and showing a color under visible light; a luminous member having a luminous function; A color-forming layer containing at least one of the light-emitting members that emit light and displaying, and the color pigment, another light-emitting member that contains at least one of the light-storing member and the light-emitting member and displays differently from the color-forming layer And a display layer having a coloring layer.

A color-forming layer for displaying on the display surface of the substrate, the color-forming layer containing at least one of a color pigment which shows a color under visible light, a light-storing member having a light-storing function, and a light-emitting member which emits light when irradiated with ultraviolet rays In order to provide a display layer including a coloring pigment, at least one of a light-storing member and a light-emitting member, and another color-forming layer that performs a different display from the color-forming layer, for example, a material containing the color-forming layer and another color-forming layer By making the material different from that contained, it is possible to display in either the color forming layer or another color forming layer even in environments with different light and darkness, and to be able to reliably recognize the display contents even in the environment with different light and dark, and to use the color forming layer. Since the display is different from the display by the other coloring layers, the expressiveness and the decorativeness are improved.

According to a third aspect of the present invention, there is provided a display member having a base having a display surface, a color pigment provided on the display surface of the base and showing a color under visible light, a light storage member having a light storage function, and irradiation of ultraviolet rays. Contains a light emitting member that emits light by
A display layer for displaying the color pigment, the light storage member and the light emitting member.

For example, a pattern is displayed with a paint containing a light-emitting member that emits light of a different color when irradiated with ultraviolet rays, and a color that shows a color under visible light is provided at a position where the pattern does not overlap with a different pattern. A pattern is displayed with a paint containing at least one of a pigment and a phosphorescent member having a phosphorescent constituent function, and at least one of the color pigment and the phosphorescent member is contained in the paint containing the light-emitting member at the overlapping position. By displaying the pattern, without laminating the layer of the light emitting member and at least one of the layers of the color pigment and the phosphorescent member, the same under different environments under different visible light or darkness and under irradiation of ultraviolet light. In addition to being able to display, different displays are also possible, so that reliable display is obtained and expressiveness or decorativeness is improved.

According to a fourth aspect of the present invention, there is provided the display member according to any one of the first to third aspects, wherein the display layer comprises a light-emitting layer containing a light-emitting member which emits light when irradiated with ultraviolet light, and a light-emitting layer which emits light under visible light. A colored layer containing a colored pigment, a luminous layer containing a luminous member having a luminous function, and at least a mixed layer containing at least two or more of the colored pigment, the luminous member and the luminescent member. And either one of them.

A light-emitting layer containing a light-emitting member that emits light when irradiated with ultraviolet light, a color layer containing a color pigment that shows a color under visible light, a night-light layer containing a light-storing member having a light-storing function, and At least one of the mixed layer containing at least any two or more of the color pigment, the light-storing member and the light-emitting member, and at least one of the color pigment and the light-storing member and the light-emitting member are used for display, so A configuration in which display is obtained and expressiveness or decorativeness is improved can be easily obtained.

A display member according to a fifth aspect is the display member according to any one of the first to fourth aspects, wherein the light storage member is:
M is at least one of alkaline earth metals of Sr, Ca and Ba, and MAl ₂ O ₄ : Eu, Dy, M ₄ A
_{l 14 O 25: Eu, Dy} , MAl 2 O 4: Eu, those containing at least one of the group of phosphorescent article represented by Nd.

M is at least one of Sr, Ca and Ba alkaline earth metals, and MAl
₂ O ₄ : Eu, Dy, M ₄ Al ₁₄ O ₂₅ : Eu, Dy, MA
l ₂ O ₄ : Since a luminous member containing at least one of a group of luminous bodies represented by Eu and Nd is used, 3
Excited by light containing ultraviolet light having an emission peak of 50 nm or more and 420 nm or less, energy is stored and afterglow luminance is increased. For example, a light emitting member is used in combination with a display layer,
When the light-emitting member emits light with light having ultraviolet light having an emission peak at 350 nm or more and 420 nm or less, even after the light-storing member stores energy and completes irradiation of light containing ultraviolet light, the light-storing member emits light, thereby displaying the image. Becomes possible.

The display member according to claim 6 is the display member according to any one of claims 1 to 5, wherein the light emitting member is
M is at least one of La, Gd, and Y, R is at least one of Sr, Ca, Ba, Mg, and Ce, and M ₂ O ₂ S: Eu, ZnS:
Mn, BaMg ₂ Al ₁₆ O ₂₇ : Eu, Mn, ZnS: C
u, SrAl ₂ O ₄ : Eu, ZnO: Zn, Sr ₄ Al ₁₄
O ₂₅ : Eu, 3 (Ba, Ca, Mg) ₃ (PO ₄ ) _2.
(Ba, Ca, Mg) Cl ₂ : Eu, Sr ₄ Al ₁₄ O ₂₅ :
Eu, Dy, R ₁₀ (PO ₄ ) ₆ Cl ₂ : Eu, BaMg ₂ A
l ₁₆ O ₂₇ : Eu, BaMgAl ₁₀ O ₁₇ : Eu, ZnS:
It contains at least one of a group of phosphors represented by Ag.

M is at least one of La, Gd and Y, and R is Sr, Ca, Ba, M
g and Ce and at least one of them, M ₂
O ₂ S: Eu, ZnS: Mn, BaMg ₂ Al ₁₆ O ₂₇ : E
u, Mn, ZnS: Cu, SrAl ₂ O ₄ : Eu, Zn
O: Zn, Sr ₄ Al ₁₄ O ₂₅ : Eu, 3 (Ba, Ca,
Mg) ₃ (PO ₄ ) _2. (Ba, Ca, Mg) Cl ₂ : E
u, Sr ₄ Al ₁₄ O ₂₅ : Eu, Dy, R ₁₀ (PO ₄ ) ₆ C
l ₂ : Eu, BaMg ₂ Al ₁₆ O ₂₇ : Eu, BaMgAl
_Since a light-emitting member containing at least one of a group of phosphors represented by ₁₀ O ₁₇ : Eu and ZnS: Ag is used, light can be emitted by light containing ultraviolet light having an emission peak at 350 nm or more and 420 nm or less. By using a light emitting diode, the size of the device can be reduced.
According to light including visible light of nm or more, both display by light emission of the light emitting member and display by the color pigment can be simultaneously displayed, and expressiveness or decorativeness is improved, and light emission with high luminance is obtained. By appropriately mixing, a complex color can be obtained, and the expressiveness or decorativeness is improved.

A display member according to a seventh aspect is the display member according to any one of the first to sixth aspects, wherein the base is a light guide plate.

Since the base is a light guide plate, substantially uniform light is applied to substantially the entire surface of the coloring layer and the display layer provided on the display surface of the base, and a substantially uniform display is possible.

An eighth aspect of the present invention provides a display device including the display member according to any one of the first to seventh aspects, and a light emitting diode for irradiating the display member with light including ultraviolet rays.

Since the display member according to any one of claims 1 to 7 is provided with a light-emitting diode for irradiating light containing ultraviolet rays, a reliable display is obtained and the expressiveness or decorativeness is improved.

According to a ninth aspect of the present invention, in the display device of the eighth aspect, the light emitting diode emits light containing ultraviolet light having an emission peak at 350 nm or more and 420 nm or less.

Since a light emitting diode which emits light containing ultraviolet light having an emission peak at 350 nm or more and 420 nm or less is used, the size of the device can be reduced, and
For example, according to the configuration of irradiating light including visible light of 400 nm or more, both display by light emission of the light emitting member and display by the color pigment can be simultaneously displayed, and a configuration in which expressiveness or decorativeness is improved can be easily achieved. can get.

According to a tenth aspect of the present invention, in the display device according to the eighth or ninth aspect, the light emitting diode is an A type.
A semiconductor light-emitting device containing l _x In _y Ga _1-xy N (0 ≦ x ≦ 1, 0 ≦ y ≦ 1) is provided.

Then, Al _x In _y Ga _{1 -xy} N (0 ≦ x
≦ 1, 0 ≦ y ≦ 1), a light-emitting diode having a semiconductor light-emitting element containing the light-emitting element can be easily miniaturized and irradiated with light including visible light of 400 nm or more. Both display by light emission and display by colored pigment can be simultaneously displayed, and a configuration in which expressiveness or decorativeness is improved can be easily obtained.

The display device according to claim 11 is the display device according to any one of claims 8 to 10, wherein
The display member according to any one of the first to seventh aspects is provided on a light guide plate.

Further, since the display member according to any one of claims 1 to 7 is provided on the light guide plate, substantially uniform display can be performed on substantially the entire surface of the display member.

According to a twelfth aspect of the present invention, there is provided a measuring device comprising: the display device according to any one of the eighth to eleventh aspects; and a pointer device having a pointing member for appropriately indicating a display on the display device and displaying a measurement result. Things.

In addition, since a pointer device provided with an indicating member for appropriately indicating the display by the display device according to any one of claims 8 to 11 and displaying the measurement result is provided, a reliable display of the measurement result is obtained and the expressiveness is obtained. Alternatively, the decorativeness is improved, and for example, a reliable display such as a speedometer of an automobile can be performed, and the present invention can be applied to a small-sized and low-voltage one.

According to a thirteenth aspect of the present invention, there is provided a timepiece comprising the display device according to any one of the eighth to eleventh aspects, and a timekeeping device having an instruction member for appropriately indicating a display on the display device and displaying a timekeeping result. It is.

In addition, since a timekeeping device provided with an indicating member for appropriately indicating the display on the display device according to any one of claims 8 to 11 and displaying the timekeeping result is provided, it is possible to obtain a reliable display of the timekeeping result and expressiveness. Alternatively, the decorativeness is improved, and for example, a portable type such as a wristwatch or a pocket watch can be applied.

[0036]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the measuring apparatus according to the present invention will be described below with reference to the drawings.

FIG. 1 is a sectional view showing a timepiece as a measuring device.
FIG. 2 is a plan view showing a display plate as a display member, and FIG.
FIG. 3 is a chromaticity diagram showing a light emission color of a light emitting member shown in FIG.

As shown in FIG. 1, reference numeral 1 denotes a timepiece, which is a measuring device. The timepiece 1 has a case body that opens a window in which a light-transmitting member such as a hard glass (not shown) is closed, and a display inside the case body. A display panel 2 as a display member having a front surface facing the window, and an emission spectrum of 350 nm or more and 420 nm or less as an ultraviolet lamp as an ultraviolet lamp for irradiating the back surface of the display panel 2 with light including ultraviolet rays. The display device includes a light emitting diode 3 for irradiating light in a near-ultraviolet region, which is a UV-A having a peak, and a clock device 4 serving as a timepiece as a pointer device disposed on the back side of the display panel 2.
The display device 5 is composed of the display panel 2 and the light emitting diodes 3.
Is configured.

The display plate 2 includes a substantially disk-shaped light guide plate 6 as a base. Also, on the back surface of the light guide plate 6,
For example, there is provided a reflecting member 7 having high reflection characteristics, such as an aluminum foil or an aluminum layer on which aluminum is deposited, or a white layer coated with a white powder paint having extremely low blackness such as aluminum oxide. An opening 8 through which light can be introduced is formed in a part of the reflecting member 7. Further, a display layer 9 is provided on a surface of the light guide plate 6 which is to be a display surface.

As shown in FIGS. 1 and 2, the display layer 9 includes a light-emitting layer 10 as a color developing layer as a background, a first mixed layer 11 for displaying characters and scales for displaying time, and A second mixed layer 12 for displaying a pattern such as a logo, a figure, a landscape, etc., each light emitting layer 10, a first mixed layer 11, and a second mixed layer
12 are formed in one layer so that they do not substantially overlap.

The light-emitting layer 10 is made of a light-transmitting resin and one or more kinds of light-emitting members which are phosphors mixed with the resin, for example, La ₂ O ₂ S: E which emits red light.
u, and is formed by, for example, brush coating, spraying by masking, printing, or the like. The first mixed layer 11 is made of a light-transmitting resin, a coloring pigment mixed with the resin and showing a color, for example, blue under visible light, and a light-storing member having a light-storing function mixed with the resin, such as SrAl. ₂ O ₄ : A luminous body of N night light (trade name: Nemoto Special Chemical Co., Ltd.) mainly composed of Eu and Dy. Similarly, spraying by brushing and masking,
It is formed by printing or the like. Further, the second mixed layer 12 is formed of a light-transmitting resin and a light-storing member mixed with the resin and having a light-storing function, for example, SrAl ₂ O ₄ : Eu, D.
It is composed of a light accumulator of y, and is similarly applied by brush coating, spraying by masking, printing, or the like. Note that SrAl ₂ O ₄ : Eu, Dy also has a function as a phosphor.

The light emitting member has a thickness of not less than 350 nm
Ultraviolet rays in the near non-linear region having an emission peak below 0 nm
A member that emits light by light containing
_TwoO_TwoS: In addition to Eu, for example, as shown in Table 1 and FIG.
Where M is at least one of La, Gd, and Y
Element M_TwoO_TwoS: Gd that is Eu_TwoO_TwoS: Eu or Y_Two
O_TwoS: Eu, ZnS: Mn, BaMg_TwoAl₁₆O₂₇: E
u, Mn, ZnS: Cu, SrAl_TwoO_Four: Eu, Zn
O: Zn, Sr_FourAl₁₄O_{twenty five}: Eu, 3 (Ba, Ca,
Mg)_Three(PO_Four)_Two・ (Ba, Ca, Mg) Cl_Two: E
u, Sr_FourAl₁₄O_{twenty five}: Eu, Dy, R is Sr, Ca,
At least one element of Ba, Mg, and Ce
In R_Ten(PO_Four)₆Cl_Two: Eu (Sr, Ca, B
a, Ce)_Ten(PO_Four)₆Cl_Two: Eu, BaMg_TwoAl₁₆
O₂₇: Eu, BaMgAl_TenO₁₇: Eu, ZnS: Ag
At least one of the phosphor groups represented by
May be contained, particularly in the case of red color as shown in FIG.
La emitted by the excitation spectrum _TwoO_TwoS: Eu, me
As shown in FIG.
BaMg that emits light with a simple excitation spectrum_TwoAl
₁₆O₂₇: Eu, Mn, Sr in blue-green color_FourAl₁₄O_{twenty five}:
In the case of Eu and blue systems, the excitation spectrum shown in FIG.
(Sr, Ca, Ba, Ce)_Ten(PO_Four)₆C
l_Two: Eu is preferable since it has high luminance.

The above various phosphors often use boron as a flux component during firing, and although not described as a chemical formula, under specific firing conditions, boron may be included in the crystal structure.

Here, the luminance shown in Table 1 is the highest luminance in the same color system, that is, La ₂ O ₂ S: Eu of No. 1 shown in FIG. BaMg ₂ Al ₁₆ O ₂₇ : Eu, Mn;
Sr ₄ Al ₁₄ O ₂₅ : Eu of No. 6 and (Sr, Ca, Ba, Ce) ₁₀ (PO ₄ ) ₆ C of No. 19 shown in FIG.
l ₂ : relatively displayed with the luminance of Eu being 100%. FIG. 3 is a graph in which luminescent colors of a phosphor having a relative luminance of 50%, which can be used practically, are plotted on a chromaticity diagram as chromaticity coordinates.

[0045]

[Table 1] In addition, these phosphors show a substantially milky white color under visible light. Further, as can be seen from the chromaticity diagram, the color to be emitted by the irradiation of the ultraviolet ray is arbitrarily set by mixing the respective light emitting members at an appropriate ratio.

As the coloring pigment, those usually used for paints and the like are used.

Further, as the light storage member, SrAl
_TwoO_Four: 10 times higher than Eu, Dy and ZnS-based light-emitting materials
With the above brightness and long-term persistence, MAl_TwoO_Four: E
u, Dy, MAl_TwoO_Four: Eu, Nd and M_FourAl
₁₄O_{twenty five}: At least one of the phosphorescent members of the group of Eu and Dy
Contains one or more, and M is a small one of Ca, Sr, and Ba.
At least one alkaline earth metal such as Ca
Al_TwoO_Four: Eu, Nd and Sr_FourAl₁₄O_{twenty five}: E
long afterglow alkaline earth aluminate fire represented by u, Dy
For example, N night light (trade name: Nemoto)
Long afterglow function with special chemicals)
Are preferred. Note that, for example, (Sr _0.9C
a_0.1) Al_TwoO_Four: Alkaline earth metals such as Eu and Dy
Is not limited to one type. These phosphors are also visible
It shows almost milky white under light.

On the other hand, as the light emitting diode 3 for irradiating ultraviolet rays in the near ultraviolet region, for example, a chip type shown in FIG. 8 which emits ultraviolet light having an emission peak of about 387 nm in an emission spectrum as shown in FIG. 7 is used. This chip type light emitting diode 3 has a pair of electrodes 3b, 3b provided on both upper and lower surfaces on opposite side surfaces of an insulating substrate 3a having a vertical dimension of 3 mm and a horizontal dimension of 1.5 mm, for example.
Substantially in the center of the upper surface of the insulating substrate 3a for example Al _x In _y Ga
_An LED chip 3c, which is a semiconductor light emitting element containing _1-xy N (0 ≦ x ≦ 1, 0 ≦ y ≦ 1), is attached with an adhesive 3d. Further, in the light emitting diode 3, the pair of electrode portions 3e, 3e of the LED chip 3c are connected to the pair of electrodes 3b, 3b, for example, by wire bonding, respectively.
The LED chip 3c is covered with a light-transmissive resin 3f by, for example, potting or transfer molding. Then, the light emitting diode 3 emits light by operating a switch provided on a case body (not shown).

As the timepiece device 4, a shaft 13 having a plurality of shafts (not shown) coaxially extending substantially through the center of the display plate 2, and each shaft of the shaft 13 is attached to the surface side of the display plate 2. Hour hand 14 and minute hand 15 which are pointers as indicator members having different lengths and one ends of which are fixed.
The shaft attached to the back side of the display panel 2 is rotated appropriately, that is, the hour hand 14 makes one revolution every 12 hours and the minute hand 15
And a drive unit 16 that rotates so as to make one revolution per minute.

Next, the operation of the above embodiment will be described.

When confirming the time of the time measurement result, which is the time measurement result, in the case of a condition under visible light such as during the daytime or under irradiation of a fluorescent lamp or an incandescent bulb, the colorant does not contain a color pigment and emits almost milky white light. The layer 10 and the second mixed layer 12 are almost indistinguishable almost entirely over the display panel 2 with almost no distinction.
Only the portion of the first mixed layer 11 that displays characters and scales containing the color pigment is displayed in substantially blue, and the time can be confirmed by the display indicated by the hour hand 14 and the minute hand 15.

In the case of darkness, etc., the light-emitting layer 10 containing no light-storing member does not emit light, and the light-storing member, ie, Sr
Al ₂ O ₄ : A first mixed layer 11 for displaying characters and scales and a second mixed layer 12 for displaying a pattern containing a phosphor of Eu, Dy (sold by Nemoto Special Chemical Co., Ltd., trade name: N night light).
Emits green light due to afterglow, the time can be confirmed, and the pattern emerges.

Then, in the dark, a switch (not shown) is operated to cause the light emitting diode 3 to emit light. Since the light emission of the light emitting diode 3 causes the light emitting diode 3 to also emit visible light, the first mixed layer 11 containing the coloring pigment is provided.
Is substantially blue, indicating time, and the light-emitting layer 10, the first mixed layer 11, and the second mixed layer containing the light-emitting member.
12 emit light in different colors. That is, La ₂ O ₂
The light-emitting layer 10 serving as a background containing a phosphor of S: Eu emits red light, and the first mixed layer 11 containing a phosphorescent material having a function as a phosphor and displaying characters and scales is colored blue with a color pigment. Besides, the light emitting member also emits green light and displays the time,
The second mixed layer 12 that emits green light of a different color from the light-emitting layer 10 serving as the background causes a light-emitting display in a state in which the pattern emerges in the light-emitting background.

When the operation of the switch is released and the light emission of the light emitting diode 3 is stopped, the light storing member which is excited by the light of the light emitting diode 3 and stores the energy emits light, that is, the light storing member is turned on similarly to the case of darkness. The portions of the first mixed layer 11 and the second mixed layer 12 contained therein emit light, the time can be confirmed, and the pattern emerges.

As described above, by appropriately mixing and combining the members that emit color under visible light, ultraviolet light, or darkness, that is, a coloring pigment, a light emitting member, or a light storage member, characters or characters for indicating time can be displayed. The parts that need to be colored and recognizable under any conditions such as graduations are mixed with members that develop color under each condition, and the members that develop color under appropriate conditions are provided as separate patterns. Irrespective of the display condition, different patterns can be displayed under each condition, and expressiveness and decorativeness can be improved.

Even when a completely different pattern is expressed under each condition, similarly, a color pigment, a light-emitting member and a light-storing member appropriately mixed are used for each different pattern, and a portion where the patterns overlap is colored on both sides. What is necessary is just to mix members, and a completely different complicated pattern can be expressed under each condition.

In order to express a different pattern under each of these conditions, a mixture of a color pigment, a light-emitting member and a light-storing member is provided at a predetermined position corresponding to the pattern, so that the display layer 9 is formed. Can be formed in a single layer instead of a laminated structure. For this reason, since the lower layer where light is blocked is not formed at the part to be laminated, it is possible to reliably receive light or develop color, and to display clearly and clearly without dulling or blurring of the outline, and to reduce the thickness dimension, The size of the device can be reduced. Furthermore, it is not necessary to reduce the content of the coloring pigment or the light emitting member in the upper layer of the portion to be laminated in order to prevent light from being blocked to the lower layer, and it is possible to improve the light emission luminance by the light emitting member and the light storing member,
It is possible to prevent the coloring state of the coloring pigment from becoming thin, and to display clearly.

The emission spectrum is 350 nm
Since the light emitting diode 3 for irradiating near-ultraviolet light, which is UV-A having an emission peak at not less than 420 nm, is used, it can be used in portable measuring instruments such as wristwatches and pocket watches, and small measuring devices such as speedometers of automobiles. In addition to the above, the size can be further reduced by using the chip type light emitting diode 3. It should be noted that the speed meter of the automobile is required to have a small supply voltage and to reliably display a clear display. According to the above-described embodiment, a small and reliable display can be clearly obtained, and the size can be reduced. Since it has excellent decorativeness, it can respond well.

The ultraviolet light generated by the light emitting diode 3
Emitted by irradiation of_TwoO_TwoS: Eu or Gd_TwoO_TwoS:
Eu, Y_TwoO_TwoS: M such as Eu is La, Gd, or Y
M which is at least one element_TwoO_TwoS: Eu,
ZnS: Mn, BaMg_TwoAl₁₆O₂₇: Eu, Mn, Z
nS: Cu, SrAl_TwoO_Four: Eu, ZnO: Zn, Sr
_FourAl₁₄O_{twenty five}: Eu, 3 (Ba, Ca, Mg)_Three(P
O_Four)_Two・ (Ba, Ca, Mg) Cl_Two: Eu, Sr_FourAl
₁₄O_{twenty five}: Eu, Dy, (Sr, Ca, Ba, Ce)
_Ten(PO_Four)₆Cl_Two: Eu and (Sr, Ca, Ba)
_Ten(PO_Four)₆Cl_Two: R such as Eu is Sr, Ca, B
a, Mg, Ce at least one of the elements
Some R_Ten(PO_Four)₆Cl_Two: Eu, BaMg_TwoAl
₁₆O₂₇: Eu, BaMgAl_TenO ₁₇: Eu, ZnS: A
g, Sr_Five(PO_Four)_ThreeA group of phosphors represented by Cl: Eu
Using a light emitting member containing at least one of
High brightness without using a black light
Light emission, clear display, and
The light emitting diode 3 has a wide irradiation range,
A reliable display can be made.

Further, although the light emitting diode 3 generally has directivity with a narrow irradiation range, since the display layer 9 is provided on the light guide plate 6, the ultraviolet light generated by the light emitting diode 3 is substantially uniform over the entire display layer 9. , And a substantially uniform light-emitting display can be performed.

In the above embodiment, the display layer 9 is provided on the display panel 2 of the timepiece, but the present invention is applicable to any measuring device such as an instrument such as an automobile speed meter or pressure gauge. The display layer 9 may be provided on a toy or a safety belt.

Further, the display layer 9 composed of the light emitting layer 10, the first mixed layer 11 and the second mixed layer 12 is provided only on the display panel 2, but the display is provided on the hour hand 14 and the minute hand 15 for the hour hand 14 and the minute hand 15. Alternatively, light-emitting display may be performed under predetermined conditions.

On the other hand, the display layer 9 is composed of the light emitting layer 10 and the first mixed layer.
Although the description has been made with the configuration including the 11 and the second mixed layer 12, the display is confirmed by emitting light from the light emitting diode 3 in the case of darkness without using the light storage member, and no coloring pigment is used. The display may be different under ultraviolet irradiation and in darkness by appropriately using a light emitting member and a light storage member.

Further, the display layer 9 has been described as being composed of one layer. However, as shown in FIG.

That is, for example, a light-emitting color of La ₂ O _{2, which} is red, is formed on the surface of the substrate 21 which is a base formed of a lightweight and highly rigid metal plate such as an aluminum alloy on a substantially circular plate.
S: Eu and BaMg ₂ Al, which is a green light-emitting body
₁₆ O ₂₇ : light-emitting layer containing Eu and Mn and emitting yellow light
10 is applied and formed almost entirely. Also, this light emitting layer
A phosphorescent layer 22 containing SrAl ₂ O ₄ : Eu, Dy, which is a phosphor that also functions as a phosphor that emits green light, for example, displays characters and scales indicating time, on the surface of 10. SrAl ₂ O _4, which is a luminous body that is coated and formed and displays a pattern such as a logo, a figure, and a landscape, for example, also has a function as a phosphor that emits green light.
Eu and Dy are luminous bodies that emit blue light (Sr, C
a, Ba, Ce) ₁₀ (PO ₄ ) ₆ Cl ₂ : mixed layer 23 containing Eu. Further, a coloring layer 24 is formed by coating on the surface of the light emitting layer 10 around the luminous layer 22. The display layer 25 is configured in a stacked state.

In this configuration, it is preferable that the light emitted from the light emitting diode 3 is irradiated from the surface of the display surface. That is, in the configuration of irradiating through the light guide plate 6, a certain degree of translucency is imparted so that the lower light emitting layer 10 on the light guide plate 6 side does not block light to the upper light storage layer 22 and the mixed layer 23. It is necessary to do, the content of the light-emitting member and the coloring pigment, the light-storing member, that is, if the lower layer is the light-emitting layer 10, the light-emitting member can not be contained to some extent or more, it is difficult to emit light with higher brightness. It is because it becomes.

In the structure shown in FIG. 9, the colored layer 24 mixed with a coloring pigment so as to be identifiable under visible light is made the uppermost layer, and the light emitting layer 10 as the background is made the lowermost layer. It is applied and formed on a substrate 21 on a substantially disk serving as a base. In the case where the first mixed layer 11 in which the color pigment is mixed as in the embodiment shown in FIGS. 1 to 8 is used, the uppermost layer is similarly formed.

In this configuration, under visible light conditions,
The substantially milky white light-emitting layer 10, the luminous layer 22, and the mixed layer 23 are not distinguished, and the colored layer 24, which is the uppermost layer containing the substantially black colored pigment, which is opposite to the window of the timepiece 1, is distinguished. The time indicated by the minute hand 15 can be confirmed. When the first mixed layer 11 in which the color pigment is mixed as in the embodiment shown in FIGS. 1 to 8 is used, the uppermost layer is similarly formed, so that the time can be confirmed under visible light.

In the dark, the luminous layer 22 for displaying characters and scales containing the luminous member and the mixed layer 23 for displaying the pattern emit green light afterglow, so that the time can be confirmed and the pattern can be seen. Go up.

Further, when the light-emitting diode 3 emits light in the dark, the light-emitting layer 10 serving as the background containing the light-emitting member emits yellow light, and the mixed layer 23 that emits light of a different color for displaying a pattern is blue-green. , The light-storing layer 22 emits green light, and a pattern that emits blue-green light and characters that emit green light appear in a background in a background that emits yellow light. In this case, the colored layer located on the upper layer side
Since 24 does not emit light, characters and scales can be displayed as if the background light emitting layer 10 was punched out at the position of the colored layer 24, that is, the time can be displayed so that the light-storing layer 22 that emits green light is darkened.

As described above, even if the display layer 25 is formed by lamination,
The time can be displayed in any environment by stacking by setting the order of application such as the pattern forming method.

The luminous layer 22 and the colored layer located on the upper layer side
24, when the mixed layer 23 has a certain degree of translucency, the layered portion of the light emitting layer 10 located on the lower layer side also emits light, and the emitted color passes through the light storage layer 22, the colored layer 24, and the mixed layer 23. In this case, the light is transmitted and displayed, and the display is performed in a state where colors are mixed in the light storage layer 22 and the mixed layer 23. The colored layer 24 looks bright due to the slightly transmitted light emission. In other words, when the overlapping layer has a light-transmitting property, it is possible to display a pattern by each light emission and display in a color in which both colors are mixed, and to express a more complicated pattern,
Expressiveness and decorativeness can be improved.

Here, when the positions of the light emitting layer 10 and the mixed layer 23 are reversed, in the dark, the light is emitted in a state where the mixed layer 23 is punched out by the light emitting layer 10 which does not emit light, and under the ultraviolet irradiation, respectively. Will emit light in different colors, and in any case, can be displayed in different patterns. In this case, when a certain degree of translucency is imparted to the light emitting layer 10, the display becomes slightly thinner at the position of the light emitting layer 10 and the display with light and dark which emits bright light at the position where they do not overlap is also possible.

Further, although light is emitted in different colors, by emitting light in the same color, the same display can be obtained even under different conditions, or a complicated display with light and dark can be obtained.

The second mixed layer 12 in the embodiment shown in FIGS. 1 to 8 and the mixed layer 23 in the embodiment shown in FIG. 9 have been described by giving a pattern. Accordingly, different displays can be performed, and the expression can be improved, that is, the amount of information transmission can be increased.

Further, the number of the light emitting diodes 3 is not limited to one, and a plurality of light emitting diodes 3 may be provided depending on the size of the display surface.

The light emitting diode 3 is not limited to a chip type, but may be of any configuration such as a hermetic seal type as shown in FIG. 10 and a tube type as shown in FIG.

That is, the light emitting diode 31 of the hermetic seal type shown in FIG. 10 is provided with an insulating member 33 such as glass filled inside a metal stem 32 having a substantially bottomed cylindrical shape.
One ends of the leads 34, 34, which are a pair of electrodes, are fixed, and, for example, Al _x In _y Ga _1-xy N
An LED chip 35 which is a semiconductor light emitting element containing (0 ≦ x ≦ 1, 0 ≦ y ≦ 1) is attached with an adhesive 36. The pair of electrode portions 37 of the LED chip 35 are connected to the pair of leads 34 by wire bonding, for example. A substantially cylindrical metal cap 39 having a glass lens 38 fitted and fixed to one end is fitted to the metal stem 32 so as to cover the LED chip 35. The light emitting diode 31 shown in FIG. 10 has ultraviolet resistance and can be used stably for a long period of time.

The tube type light emitting diode 41 shown in FIG. 11 has an electrode 43 serving as a cathode having a mounting portion 42 at one end, and a substantially rod-shaped electrode 44 serving as an anode.
For example, Al _x In _y G is applied on the mounting portion 42 of the electrode 43 with an adhesive 45.
An LED chip 46 which is a semiconductor light emitting element containing a _1-xy N (0 ≦ x ≦ 1, 0 ≦ y ≦ 1) is attached. The pair of electrode portions 47 of the LED chip 46 are
The pair of electrodes 43 and 44 are respectively connected to ends. In addition, a resin 48 having a light-transmitting property is integrally provided at one end of the pair of electrodes 43 and 44 so as to cover the LED chip 46.

Next, still another embodiment of the present invention will be described with reference to FIGS.

The embodiment shown in FIGS. 12 and 13 improves the display uniformity in the timepiece of the embodiment shown in FIGS.

That is, the timepiece 51 includes a case body that opens a window in which a light-transmitting member such as a hard glass (not shown) is closed, and a display member in which the surface serving as a display surface faces the window. And a light emission spectrum of, for example, 390 nm as an ultraviolet lamp which is disposed in a pair in the radial direction of the display plate 52 and irradiates light including ultraviolet light.
Al _x In _y Ga _1-xy irradiating light in the near ultraviolet region of UV-A having a half width of ± 10 nm
N-type (0 ≦ x ≦ 1, 0 ≦ y ≦ 1) chip-type light emitting diodes 3 and 3 using LED chips, which are semiconductor light emitting elements, and a pointing member disposed on the back side of the display panel 52 And a clock device 4 as a clock device. The display device 53 is formed by the display plate 52 and the light emitting diodes 3 and 3.
Is configured.

The display plate 52 has a substantially disc-shaped light guide plate 55 as a base. Then, on the back surface and the peripheral surface of the light guide plate 55, white powder with extremely low blackness such as aluminum oxide, fine glass beads, silica gel, or the like is used so that the brightness of the light guide plate 55 is uniform by irregularly reflecting light. A diffusion layer 56 formed by coating is provided, and the surface of the diffusion layer 56 reflects light leaking from the diffusion layer 56.For example, aluminum foil or an aluminum layer on which aluminum is deposited, blackness of aluminum oxide, etc. There is provided a reflection member 7 having high reflection characteristics, such as a white layer formed by applying a very small white powder paint. Openings 8, 8 through which light can be introduced are located at positions where the light emitting diodes face each other in the radial direction of the diffusion layer 56 and the reflecting member 7.
Are formed.

Then, a display layer 9 similar to that of the embodiment shown in FIGS.
Is provided. That is, the display layer 9 includes a light emitting layer 10 serving as a background, a first mixed layer 11 displaying characters and scales indicating time, and a second mixed layer displaying patterns such as logos, figures, and landscapes. 12, each light emitting layer 10, the first mixed layer
11 and the second mixed layer 12 are formed in one layer so as not to substantially overlap.

The light emitting layer 10 is made of a light-transmitting resin and one or more kinds of light-emitting members which are phosphors mixed with the resin, for example, La ₂ O ₂ S: Eu which emits red light.
Phosphor and BaMg ₂ Al ₁₆ O emitting green light
₂₇ : composed of a mixture of Eu and Mn phosphors, and formed by, for example, brush coating, spraying by masking, printing, or the like. The first mixed layer 11 is made of a light-transmitting resin, a coloring pigment mixed with the resin and showing a color, for example, blue under visible light, and a light-storing member having a light-storing function mixed with the resin, such as SrAl. ₂ O ₄ : N night light (trade name: Nemoto Special Chemical Co., Ltd.) luminous body containing Eu and Dy as main components and La ₂ O emitting red light
₂ S: Eu luminous body, similarly brush-coated,
It is applied and formed by spraying or printing by masking. The mixed color of green SrAl ₂ O ₄ : Eu, Dy and red La ₂ O ₂ S: Eu is orange. Further, the second mixed layer 12 includes a light-transmitting resin and a light-storing member having a light-storing function mixed with the resin, for example, SrAl ₂ O ₄ :
Eu and Dy phosphors emit blue light (Sr, Ca,
Ba, Ce) ₁₀ (PO ₄ ) ₆ Cl ₂ : composed of a phosphor of Eu.
It is formed by printing or the like. The green SrA
l ₂ O ₄ : Eu, Dy and blue (Sr, Ca, Ba, C
e) The color mixture with ₁₀ (PO ₄ ) ₆ Cl ₂ : Eu is bluish green. And SrAl ₂ O ₄ : Eu, Dy also has a function as a phosphor.

Further, on the surface of the display layer 9, a diffusion plate 59 provided with a diffusion surface such as embossing on a highly translucent synthetic resin film is provided in order to uniform the light emission and suppress the light emission unevenness. Have been.

Under visible light, such as during the daytime or under irradiation of a fluorescent lamp or an incandescent bulb, the light-emitting layer 10 and the second mixed layer 12 which do not contain a coloring pigment and are almost milky white are almost indistinguishable. Almost the entirety becomes substantially milky white, and only the portion of the first mixed layer 11 that displays characters and scales containing the colored pigment is displayed in substantially blue, and the hour hand 14 and the minute hand
The time is displayed by the instruction of 15.

In the case of darkness or the like, the light-emitting layer 10 containing no light-storing member does not emit light, and the light-storing member, ie, Sr
Al ₂ O ₄ : The first mixed layer 11 that contains a phosphor of Eu and Dy and displays characters and scales and the second mixed layer 12 that displays a pattern emits green light due to afterglow and displays time. At the same time, the pattern emerges.

Further, when the light emitting diodes 3 and 3 are made to emit light in the dark by operating a switch (not shown), the light incident from the radially symmetric position through the openings 8 and 8 is diffused by the diffusion layer 56 and the reflecting member. At 7, the light is diffused into the light guide plate 55 to guide the light substantially uniformly. Then, since the light emitting diode 3 also emits visible light, the first mixed layer containing the coloring pigment
11 becomes almost blue and the time is displayed. Also, the red La
₂ O ₂ S: Eu and green BaMg ₂ Al ₁₆ O ₂₇ : E
The light emitting layer 10 containing the u and Mn phosphors and serving as the background emits a mixed color yellow. Furthermore, the first mixed layer 11 which contains a phosphorescent material which also functions as a phosphor and displays characters and scales
In addition to the blue color of the coloring pigment, the light emitting member 10 emits light in orange, which is a different color from the light emitting layer 10 as a background that emits yellow light in addition to displaying the time, and the second mixed layer 12 displaying the pattern is yellow. The light-emitting layer 10 emits light in blue-green, which is a mixed color of a color different from that of the light-emitting layer 10 serving as the background, and emits light in a state in which the pattern emerges in the background that emits light.

The light emitting layer 10 and the first mixed layer 11
The second mixed layer 12 emits light from the pair of light emitting diodes 3 and 3 disposed at symmetrical positions in the radial direction substantially uniformly. Further, the light emission is further uniformed by the diffusion plate 59 located on the front surface side, and the display can be performed evenly.

When the operation of the switch is released and the light emission of the light emitting diode 3 is stopped, the light storing member which has been excited by the light of the light emitting diode 3 and has stored the energy emits light, that is, the light storing member is discharged in the same manner as in the case of darkness. The portions of the first mixed layer 11 and the second mixed layer 12 contained therein emit light, indicating the time and the pattern emerges.

Although the embodiment shown in FIGS. 12 and 13 has been described by providing the diffusion plate 59, for example, an ultraviolet curing resin and a polyethylene terephthalate (PET) film are laminated to collect light in a predetermined range. A light collecting plate that emits light may be used.

The display layer 9 is formed on the light guide plate 55 and the diffusion plate 59 is provided on the display layer 9.
The display panel 9 may be provided on the diffusion plate 59.

Next, still another embodiment of the present invention will be described with reference to FIGS.

The embodiment shown in FIGS. 14 and 15 is the same as the light guide plate 55 of the embodiment shown in FIGS.
In addition, a notch 61 for accommodating the light emitting diodes 3 is provided.

That is, the display plate 62 as a display member is
It has a substantially disk-shaped light guide plate 63 as a base, and substantially U-shaped cutouts 61, 61 capable of accommodating the light emitting diodes 3, 3 are provided at radially opposed positions of the light guide plate 63, respectively. ing. The diffusion layer 56 and the reflection member 7 are provided on the back surface of the light guide plate 63 and on the peripheral surface where the notches 61 and 61 are not provided, similarly to the embodiment shown in FIGS. The display layer 9 is provided on the surface of the light guide plate 63 that is to be the display surface. Further, a diffusion plate 59 is provided on the surface of the display layer 9.
Are provided, and the display plate 62 is configured.

According to the embodiment shown in FIGS. 14 and 15, the notches 61, 61 for accommodating the light emitting diodes 3, 3 are provided in the light guide plate 63, so that the space provided in the case body can be reduced. The size can be easily reduced, and the surface of the light guide plate 63 that receives light from the light emitting diodes 3 and 3 increases, so that the amount of light increases and the luminance can be increased, and a clearer display can be obtained.

In the embodiment shown in FIGS. 14 and 15, notch 61 for housing light emitting diode 3 is provided.
May be formed in a substantially box shape, for example, as shown in FIG. According to this configuration, the light guide plate 63 is
Since the surface receiving light from 3 further increases, the amount of light can be increased and the emission luminance can be further increased, and a clearer display can be obtained.

Next, still another embodiment will be described with reference to FIGS.

A clock 71 is a measuring device.
As in the embodiments shown in FIGS. 1 to 8, the embodiments shown in FIGS. 12 and 13, and the embodiments shown in FIGS. 14 and 15, a light-transmitting member such as hard glass (not shown) is closed. A case body that opens a window to be opened, a display plate 72 as a display member having a surface serving as a display surface facing the window inside the case body, and a display plate 72 provided at a position radially opposed to the display plate 72. And a clock device 4 disposed on the back side of the display panel 72. The display device 73 is configured by the display plate 72 and the light emitting diodes 3 and 3.

The display panel 72 is a semi-specular body serving as a base.
75, that is, for example, a half mirror, which reflects a part of the light from one side and transmits a part of the light but does not transmit the light from the other side, and the mirror 76 has a predetermined gap. Surfaces that reflect through are opposed to each other. Further, on one surface of the semi-specular body 75 of the display panel 72, a first color-forming layer 77 for displaying a pattern such as a logo, a figure, and a landscape is provided, and on the other surface of the semi-specular body 75, A second coloring layer 78 for displaying characters and scales indicating time is provided.

The first color forming layer 77 is made of a light-transmitting resin made of one or more kinds of light-emitting members which are phosphors, for example, BaMg ₂ Al ₁₆ O ₂₇ : Eu, Mn which emits green light.
A mixture of the above phosphors is applied by brushing, spraying by masking, printing, or the like. Further, the second color-forming layer 78 is composed of a color pigment exhibiting a color, for example, blue under visible light, and a light-storing member having a light-storing function, for example, SrAl ₂ O ₄ : Eu, Dy. Is mixed with a translucent resin, and is applied and formed by brush coating, spraying by masking, printing, or the like. A display layer 79 is constituted by the first color forming layer 77 and the second color forming layer 78 provided on both surfaces of the semi-mirror 75.

In the visible light, such as during the daytime or under irradiation of a fluorescent lamp or an incandescent bulb, the light is reflected by the semi-specular body, so that the light does not reach the first color forming layer 77 and the surface of the semi-specular body 75 Only the second coloring layer 78 that displays characters and scales containing colored pigments can be displayed in substantially blue, and the time is indicated by the hour hand 14 and the minute hand 15.

In the case of darkness or the like, the second color forming layer 78 containing a phosphorescent member, that is, a phosphor of SrAl ₂ O ₄ : Eu, Dy and displaying characters and scales emits green light by afterglow, Display the time. Note that the first color forming layer 77 containing no light storage member does not emit light, and only the display by the second color forming layer 78 can be recognized.

Further, when a light switch (not shown) is operated in the dark to cause the light emitting diodes 3 and 3 to emit light, a part of the ultraviolet light including visible light from the light emitting diodes 3 and 3 is The light is transmitted from the surface facing a certain mirror body 76 to the front surface, which is the other surface. The transmitted light causes the second color forming layer 78, which contains a light accumulator that also functions as a phosphor and displays characters and scales, to emit light in substantially green to display the time.

The light emission of the light emitting diodes 3 and 3 causes the first color forming layer 77 which contains a green BaMg ₂ Al ₁₆ O ₂₇ : Eu, Mn phosphor to be a background and emits light. As shown in FIG. 18, the light emitted from the first color forming layer 77 is partially transmitted to the surface side of the semi-mirror 75 and the pattern emerges, and the emitted light is reflected by the mirror 76 to form a semi-mirror surface. body
A part of the pattern further emerges on the front side of the 75 and the pattern emerges. By repeating this reflection and transmission, the patterns are displayed in a multiplexed manner so as to overlap with a depth.

As described above, by providing the display layer 79 with the mirror body 76 and the semi-mirror body 75 facing each other, an overlapped display is obtained, and a high taste is obtained.

[0108]

According to the display member of the first aspect, a coloring layer containing at least one of a color pigment, a light storage member and a light emitting member is provided on the display surface of the base,
In order to provide a display layer containing at least one of a light storage member and a light-emitting member and another color-forming layer for displaying with a different brightness from the brightness displayed by the color-forming layer, the color-forming layer or the other even under an environment with different brightness. One of the coloring layers of
The display contents can be reliably recognized even in an environment with different light and darkness, and expressiveness and decorativeness can be improved by, for example, differentiating the display by the coloring layer from the display by the other coloring layers.

According to the display member of the second aspect, the color-forming layer containing at least one of a color pigment, a light-storing member and a light-emitting member and at least one of the color pigment, the light-storing member and the light-emitting member are provided on the display surface of the base. In order to provide a display layer including any one of them and another color-forming layer for performing a display different from that of the color-forming layer, for example, by making the material contained in the color-forming layer different from the material contained in the second, the light-and-darkness differs. Either the coloring layer or the other coloring layer displays even under the environment, and the display contents can be reliably recognized even in the environment where the brightness is different, and the display by the coloring layer and the display by the other coloring layer are different, so the expression and The decorativeness can be improved.

According to the display member of the third aspect, since the display layer for displaying the color pigment, the light storage member and the light emitting member is provided on the display surface of the base, for example, light emission which emits light of different colors by irradiation with ultraviolet rays. Along with displaying the pattern with the paint containing each member, at a position that does not overlap with a different pattern from the pattern, the pattern is displayed with the paint containing at least one of the color pigment and the phosphorescent member,
At the overlapping position, at least one of the color pigment and the phosphorescent member is contained in the paint containing the light-emitting member and displayed, so that the layer of the light-emitting member and at least one of the layers of the color pigment and the phosphorescent member are laminated. The same display can be performed depending on the pattern formation status even in different environments under visible light or darkness and under ultraviolet irradiation without different display, and different displays can be performed, and it can be displayed reliably regardless of the environment and expressiveness Alternatively, the decorativeness can be improved.

According to the display member of the fourth aspect, in addition to the effects of the display member of any one of the first to third aspects, a light-emitting layer containing a light-emitting member, a colored layer containing a color pigment, and a light-storing member are provided. At least one of the mixed layer containing at least any two or more of the color pigment, the light storage member and the light emitting member, and at least one of the color pigment and the light storage member, and the light emitting member Therefore, a configuration that can surely be displayed irrespective of the environment and improve expressiveness or decorativeness can be easily obtained.

According to the display member of the fifth aspect, in addition to the effect of the display member of any one of the first to fourth aspects, M
Is at least one of alkaline earth metals of Sr, Ca and Ba, and MAl ₂ O ₄ : Eu, Dy, M ₄ Al
_Since a phosphorescent member containing at least one of phosphorescent groups represented by ₁₄ O ₂₅ : Eu, Dy and MAl ₂ O ₄ : Eu, Nd is used, ultraviolet light having an emission peak at 350 nm or more and 420 nm or less is used. Is excited by light containing, the energy is stored, and the afterglow luminance can be increased.
When the light-emitting member emits light using light having ultraviolet light having an emission peak below, even after the light-storing member stores energy and ends irradiation of light containing ultraviolet light, display can be performed by the light-storing member emitting light.

[0113] According to the display member of the sixth aspect, the claim is provided.
In addition to the effects of the display member according to any one of 1 to 5,
Is at least one element of La, Gd, and Y
And R is at least one of Sr, Ca, Ba, Mg, and Ce.
Is one of the elements. _TwoO_TwoS: Eu, ZnS: M
n, BaMg_TwoAl₁₆O₂₇: Eu, Mn, ZnS: C
u, SrAl_TwoO_Four: Eu, ZnO: Zn, Sr_FourAl₁₄
O_{twenty five}: Eu, 3 (Ba, Ca, Mg)_Three(PO_Four)_Two・
(Ba, Ca, Mg) Cl_Two: Eu, Sr_FourAl₁₄O_{Two Five}:
Eu, Dy, R_Ten(PO_Four)₆Cl_Two: Eu, BaMg_TwoA
l₁₆O₂₇: Eu, BaMgAl_TenO₁₇: Eu, ZnS:
At least one of a group of phosphors represented by Ag
350 nm or more 4
Due to light containing ultraviolet light having an emission peak at 20 nm or less.
Light emission, and the use of light-emitting diodes
Light containing visible light of 400 nm or more, for example, can be downsized.
By using an object that irradiates
Display and color pigment display at the same time.
It can improve expression and decoration as well as
In addition, light emission with high luminance is obtained, and
Can obtain complex colors and improve expressiveness and decorativeness.
Wear.

According to the display member of the seventh aspect, in addition to the effect of the display member of any one of the first to sixth aspects, since the base is a light guide plate, substantially the entire surface of the display member can be irradiated with ultraviolet rays, Uniform display is possible.

According to the display device of the eighth aspect, the display member of any one of the first to seventh aspects is provided with a light-emitting diode for irradiating light containing ultraviolet rays, so that a reliable display can be obtained and expressibility or expression can be obtained. The decorativeness can be improved.

According to the display device of the ninth aspect, in addition to the effect of the display device of the eighth aspect, in addition to the effect of not less than 350 nm
In order to use a light emitting diode that emits light containing ultraviolet light having an emission peak at or below nm, it is possible to reduce the size of the device. For example, according to the configuration that emits light containing visible light of 400 nm or more, the light emitting member emits light. A configuration capable of simultaneously displaying both the display and the display using the color pigment and improving the expressiveness or decorativeness can be easily obtained.

According to the display device of the tenth aspect, in addition to the effect of the display device of the eighth or ninth aspect, Al _x In _y
Since a light emitting diode including a semiconductor light emitting element containing Ga _1-xy N (0 ≦ x ≦ 1, 0 ≦ y ≦ 1) is used, the device can be easily miniaturized, and includes visible light of 400 nm or more. Since the light is irradiated, both the display by the light emission of the light emitting member and the display by the color pigment can be simultaneously displayed, and a configuration in which the expressiveness or the decorativeness is improved can be easily obtained.

According to the display device of the present invention, in addition to the effects of the display device of the present invention, the display member of the present invention is provided on the light guide plate. In addition, almost the entire surface of the display member can be irradiated with ultraviolet rays, and a substantially uniform display can be performed.

According to the measuring device of the twelfth aspect, since the pointer device provided with the indicating member for appropriately indicating the display by the display device of the eighth aspect and displaying the measurement result is provided, a reliable measurement can be performed. The result can be displayed and the expressiveness or decorativeness can be improved.

According to the timepiece of the thirteenth aspect, the eighth aspect is provided.
The display device according to any one of (11) to (11) is provided with a timing device provided with an indicating member for appropriately indicating the display of the timing result and displaying the timing result. Portable devices such as watches and pocket watches can also be applied.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a timepiece according to an embodiment of a measuring device of the present invention.

FIG. 2 is a plan view showing the display panel.

FIG. 3 is a graph of chromaticity coordinates showing colors of light emitted from various light emitting members.

FIG. 4 La ₂ O ₂ S: Eu which is a red light emitting member
5 is a graph showing the relationship between the excitation and emission wavelengths and the intensities.

FIG. 5: BaMg ₂ Al _{16 as} a green light-emitting member
4 is a graph showing the relationship between the wavelength and the intensity of excitation and emission of O ₂₇ : Eu, Mn.

FIG. 6 is a blue light-emitting member (Sr, Ca, B);
a, Ce) ₁₀ (PO ₄ ) ₆ Cl ₂ : A graph showing the relationship between the excitation and emission wavelength and intensity of Eu.

FIG. 7 is a graph showing an emission spectrum of the light emitting diode.

FIG. 8 is a cross-sectional view showing the light emitting diode according to the first embodiment.

FIG. 9 is a sectional view showing another embodiment of the measuring device of the present invention.

FIG. 10 is a cross-sectional view showing a light emitting diode of still another embodiment of the measuring device of the present invention.

FIG. 11 is a cross-sectional view showing a light emitting diode of still another embodiment of the measuring device of the present invention.

FIG. 12 is a sectional view showing a timepiece according to still another embodiment of the present invention.

FIG. 13 is a plan view showing the display panel.

FIG. 14 is a sectional view showing a timepiece according to still another embodiment of the present invention.

FIG. 15 is a plan view showing the same display panel.

FIG. 16 is a partially cutaway sectional view showing a timepiece according to still another embodiment of the present invention.

FIG. 17 is a sectional view showing a timepiece according to still another embodiment of the present invention.

FIG. 18 is a cross-sectional view in which a part of the same is cut away.

[Explanation of symbols]

 1,51,71 Clock as a measuring device 2,52,62,72 Display plate as a display member 3,31,41 Light emitting diode 3e, 35,46 LED device as a semiconductor light emitting device 4 As a timing device as a pointer device Clock device 5, 53, 73 Display device 6, 55, 63 Light guide plate 9, 25, 79 Display layer 10 Light emitting layer 11 serving as a coloring layer 11 First mixed layer serving as a coloring layer 12 Second layer serving as a coloring layer 2 Mixed layer 14 Hour hand as indicating member 15 Minute hand as indicating member 21 Substrate as substrate 22 Luminescent layer as color forming layer 23 Mixed layer as color forming layer 24 Coloring layer as color forming layer 77 First color forming layer Color-forming layer 78 Second color-forming layer which is a color-forming layer

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme court ゛ (Reference) G09F 13/42 G09F 13/42 (72) Inventor Mitsuo Oyama 1-1-15 Kamiogi, Suginami-ku, Tokyo Maruzan Building Nemoto Special Chemical Co., Ltd. (72) Inventor Kiyoshi Suzuki 1-1-15, Kamiogi, Suginami-ku, Tokyo, Marusan Building Nemoto Special Chemical Co., Ltd. (72) Inventor Kari Marusan Building, 1-15-1 Kamiogi, Suginami, Tokyo Nemoto Special Chemical Co., Ltd.

Claims (13)

[Claims] 1. A substrate having a display surface, at least one of a color pigment provided on the surface of the substrate and showing a color under visible light, a luminous member having a luminous function, and a luminous member emitting light by irradiation with ultraviolet rays. A color-forming layer containing and displaying at least one of the color pigments, the light-storing member and the light-emitting member, and another color-forming layer that displays light and dark different from light and dark that displays the color-forming layer. And a display layer comprising: 2. A substrate having a display surface, at least one of a color pigment provided on the surface of the substrate and showing a color under visible light, a phosphorescent member having a phosphorescent function, and a light emitting member emitting light by irradiation with ultraviolet rays. And a display layer including at least one of the color pigment, the light storage member and the light emitting member, and another color formation layer that displays differently from the color formation layer. And a display member comprising: 3. A base material having a display surface, a color pigment provided on the display surface of the base material and showing a color under visible light, a light storage member having a light storage function, and a light emitting member emitting light by irradiation with ultraviolet rays. And a display layer for displaying the color pigment, the light storage member, and the light emitting member. 4. The display layer includes a light-emitting layer containing a light-emitting member that emits light when irradiated with ultraviolet light, a color layer containing a color pigment that shows a color under visible light, and a night light containing a light-storing member having a light-storing function. 4. The image forming apparatus according to claim 1, further comprising a layer, and at least one of a mixed layer containing at least two of the color pigment, the light storage member, and the light emitting member. 5. Display member. 5. The phosphorescent member, wherein M is at least one of Sr, Ca, and Ba alkaline earth metals,
l ₂ O ₄ : Eu, Dy, M ₄ Al ₁₄ O ₂₅ : Eu, Dy, M
Al ₂ O _4: Eu, claims 1 to 4 indicating member of any one described, characterized in that it contains at least one of the group of phosphorescent article represented by Nd. 6. The light emitting member, wherein M is at least one element of La, Gd, and Y, and R is Sr, Ca, B
a, Mg, at least any one element of _{Ce, M 2 O 2 S:} Eu, ZnS: Mn, BaMg 2 Al 16
O ₂₇ : Eu, Mn, ZnS: Cu, SrAl ₂ O ₄ : E
u, ZnO: Zn, Sr ₄ Al ₁₄ O ₂₅ : Eu, 3 (B
a, Ca, Mg) ₃ (PO ₄ ) _2. (Ba, Ca, Mg)
Cl ₂ : Eu, Sr ₄ Al ₁₄ O ₂₅ : Eu, Dy, R ₁₀ (P
O ₄ ) ₆ Cl ₂ : Eu, BaMg ₂ Al ₁₆ O ₂₇ : Eu, Ba
The display member according to any one of claims 1 to 5, wherein the display member contains at least one of a group of phosphors represented by MgAl ₁₀ O ₁₇ : Eu and ZnS: Ag. 7. The display member according to claim 1, wherein the base is a light guide plate. 8. A display device, comprising: the display member according to claim 1; and a light-emitting diode that irradiates the display member with light including ultraviolet rays. 9. A light emitting diode having a wavelength of 350 nm or more
9. The display device according to claim 8, wherein light containing ultraviolet light having an emission peak at 0 nm or less is irradiated. 10. A light-emitting diode comprising Al _x In _y Ga
The display device according to claim 8, further comprising a semiconductor light emitting element containing _1-xy N (0 ≦ x ≦ 1, 0 ≦ y ≦ 1). 11. The display device according to claim 8, wherein the display member according to any one of claims 1 to 7 is provided on a light guide plate. 12. A measuring device comprising: the display device according to claim 8; and a pointer device provided with an indicating member for appropriately indicating a display on the display device and displaying a measurement result. . 13. A timepiece comprising: the display device according to any one of claims 8 to 11; and a timekeeping device including an instruction member for appropriately indicating a display on the display device and displaying a timekeeping result.