CN1103491A

CN1103491A - Display dial coated with phosphorescent ink

Info

Publication number: CN1103491A
Application number: CN 94108446
Authority: CN
Inventors: 岩间一浩; 田岛幸男
Original assignee: Seikosha KK
Current assignee: Seiko Precision Inc
Priority date: 1993-07-13
Filing date: 1994-07-13
Publication date: 1995-06-07
Anticipated expiration: 2014-07-13
Also published as: CN1047005C; JPH0777585A; GB2280049B; HK1004015A1; GB2280049A; GB9413934D0; JP2824732B2

Abstract

The display can be viewed in the dark by using a photophorescent ink to obtain a thin indication board by eliminating irregularities on the indicating plane. The phosphorescent ink is coated on the rear surface of a transparent plate 10 and are formed on the transparent plate with a shading ink having a color different from that of the phosphorescent ink. In a bright environment, the phosphorescent ink receives and stores light therein so that the dark-colored indices shows up on the white surface of the plate from the front side and the user can read time through the indices indicated by the hands. Further, in a dark environment, the phosphorescent ink emits light due to the energy stored therein whereby the indices shows up on the bright surface of the plate as they throw their shades on the plate surface.

Description

Display dial coated with phosphorescent ink

The present invention relates to a kind of display panel that scribbles phosphorescent paint, it can make a kind of display device, timer etc. for example, be presented at night or be easy in the dark and see clearly.

Usually, even also can recognize in the dark in order to make a kind of display, known have a kind of so-called interior lighting formula display panel, in its shell, be combined with one and show the card illuminating lamp, perhaps a kind of display panel, it has various marks, for example numeral, symbol or scale, if time meter also comprises for example be formed on its front surface and be coated with scale or numeral with the time that indicates of self luminous fluorescent or phosphorescent paint, the energy of being stored during this coating environment bright because of dial is in can be luminous.If the fluorescent or the phosphorescent paint that use, general each mark all forms as an opening letter, shown in Figure 21 and 22, the mark (b) that occurs with the opening alphabetical form by a fluorescent coating partly or phosphorescent paint partly (b1) and a coating part (b2) that surrounds aforementioned part on metal opaque plate (a) front surface are formed.Mark (b) can be seen clearly by two parts (b1) with (b2) in the environment of light and the environment in dark, it can by apply opening partly fluorescent or the phosphorescent paint on (b1) see clearly.

Yet the shortcoming of interior lighting formula display is that it is very complicated, and requiring has a large amount of parts, thereby causes the increase of cost.In addition, use a kind of display of self luminous coating also to have the problem that quantity that coating uses is subjected to legal restrictions, i.e. [relevant preventing] because the law of radioisotopic Radiation sickness, thereby comprehensively applying coatings is impossible, and also can not obtain in order to recognize the required brightness of filling part of display at night.

Also have, when using fluorescent or phosphorescent paint to form mark on the front surface of dish, the overlay of coating becomes thicker, thereby causes the front surface of dish very concavo-convex uneven and can not become an even curface.Therefore, if pointer moves so that point out each mark on the front surface of dish, pointer will take place touch the mark that forms excrescence and the danger that pointer is broken off an action.Particularly, as a kind of when slim in meter or the table, wherein the gap between dial surface and the protecgulum is too little concerning each pointer rotates, and just more shape is serious in then this danger.

Also have, the display panel that uses fluorescent or phosphorescent paint usually all is to carry out negative (being dark suprabasil bright demonstration) that shows without any exception.

It the object of the present invention is to provide a kind of display panel that is coated with phosphorescent paint, even can make the user also can easily see display panel clearly in the dark environment in lining.

Another object of the present invention provides a kind of display panel that is coated with phosphorescent paint, even it can make the user also can see clearly display panel in the environment of dark, and has a smooth smooth display panel surface thereby has reduced its thickness.

In order to achieve the above object, the display panel that the present invention scribbles phosphorescent paint comprises a transparent panel, and its rear surface scribbles phosphorescent paint, and disposes the mark that applies with the tone coating that is different from the phosphorescent paint color on its front surface, for example numeral or symbol.

Also have, on the rear surface of transparent panel, be formed with mark, have the tone coating that is different from the phosphorescent paint color on it, then, except mark, be coated with phosphorescent paint on the whole rear surface of plate.

The numeral or the symbol that form each mark can occur with the form of opening letter.

Also might each mark all be arranged on the front or rear surface of transparent panel so that, be equivalent to opening part partly on the rear surface and be coated with phosphorescent paint by using a kind of coating that is different from used phosphorescent paint color to form an opening letter.

Beyond the transparent panel upper shed partly that partly is coated with the coating with a kind of color clear sometimes.

In addition, be coated with the coating that is different from used phosphorescent paint color with a kind of on the front or rear surface of transparent panel, that part of reserving each mark of formation is coated with phosphorescent paint and be equivalent to opening part partly on the rear surface of plate as an opening part.

By phosphorescent paint being coated on the rear surface of transparent panel, the thickness of paint coatings can be created on the rear surface of plate, thereby the front surface of plate is flat.Therefore, when plate is used as a display panel, even each pointer is run into the front surface of plate, the action of pointer can not hindered yet.

To be illustrated by the reference accompanying drawing embodiments of the invention below.In the accompanying drawing:

Fig. 1 be one use dial in the one embodiment of the invention the time meter front view.

Fig. 2 is the front view of dial as shown in fig. 1.

Fig. 3 is the amplification partial section of A-A line intercepting in Fig. 2.

Fig. 4 is the amplification partial section of the dial in the second embodiment of the invention.

Fig. 5 is the amplification partial front elevation view of the dial in the third embodiment of the invention.

Fig. 6 is the amplification partial section of the dial in the fourth embodiment of the invention.

Fig. 7 is the amplification partial section of the dial in the fifth embodiment of the invention.

Fig. 8 is the amplification partial section of the dial in the sixth embodiment of the invention.

Fig. 9 is the amplification partial section of the dial in the seventh embodiment of the invention.

The front view of meter when Figure 10 is to use of dial in the eighth embodiment of the invention.

Figure 11 is the front view of dial as shown in Figure 10.

Figure 12 is the amplification sectional view of B-B line intercepting in Figure 11.

Figure 13 is the amplification partial section of the dial in the ninth embodiment of the invention.

The front view of meter when Figure 14 is to use of dial in the tenth embodiment of the invention.

Figure 15 is the front view of dial as shown in Figure 14.

Figure 16 is the amplification sectional view of C-C line intercepting in Figure 15.

Figure 17 is the amplification partial section of the dial in the eleventh embodiment of the invention.

Figure 18 is the front view of the dial in the twelveth embodiment of the invention.

Figure 19 is the amplification partial section of the dial in the thriteenth embodiment of the invention.

Figure 20 is the amplification partial section of the dial in the fourteenth embodiment of the invention.

Figure 21 is the amplification partial section of a prior art dial.

Figure 22 is main sectional view partly among Figure 21.

Fig. 1 to 3 shows the display panel that scribbles one deck phosphorescent paint of a first embodiment of the invention, particularly the dial of meter when this display panel is used as.Just, the dial 1 that scribbles phosphorescent paint as an example of display panel be positioned in one the time meter the front surface of shell 15 on the time showing that forms partly on.Be arranged on the alarm clock button 16 of an energy vertical moving on the top of shell 15, and be provided with 17, one minute hands 18 of hour hands and alarm clock pin 19 so that they can freely be rotated along dial by the parts that are contained in the shell 15.

The structure of dial 1 is described now.Dial 1 comprises that is used a Mayler, propylene, and the transparent panel 10 that polyester, vinyl chloride etc. are made, its rear surface all is coated with a kind of phosphorescent paint 11.Phosphorescent paint 11 comprises zinc sulphide: (ZnS: Cu) (light green luminophor), it mixes with the ratio with respect to latter 0.5-5% with a kind of molding nature material copper mutually.Mixing ratio and manufacture method according to phosphorescent paint can obtain a sufficiently long twilight sunset persistent characteristic or the characteristics of luminescence.In addition, also might make coating luminous and send nattier blue light.On the surface of plate 10, be formed with a kind of tone coating that is different from the dead color (for example black) of phosphorescent paint 11 colors be drawn as such as numeral, the mark 12 of symbol or scale, form striking contrast with the front surface of plate 10, preferably a kind of symmetrical tone of this tone coating or approach its tone stamps with screen printing.Though the result is the mark 12 that is formed with on the front surface of plate 10 with the tone applying coating, because the thickness of mark 12 is very little, almost be flat, so the rotation of each pointer can not hindered.

Therefore, in the bright light environments as daytime, because phosphorescent paint 11 presents a kind of light green that swoons that approaches white, dark-coloured mark 12 promptly is apparent on the front surface of dial, thereby mark 12 is recognized by the observer in the mode that erect image shows.

In addition, in dark surrounds as night, phosphorescent paint 11 is because the energy of storing in bright light environments sends light, thereby when mark 12 throws their shade onboard, and mark just is apparent on the bright dial front surface also the mode of erect image demonstration and is recognized by the observer.

In addition, dial is very bright, and hour hands 17, the position that makes each pointer also can be seen clearly in the environment of dark even minute hand 18 and alarm clock pin 19 emit a brilliant light.

Fig. 4 shows a dial 2 according to second embodiment of the invention.As shown in FIG., as first implementation column, be formed on the rear surface of plate 20 with a kind of tone coating 21 that is different from the color (as black) of phosphorescent paint 21 as the mark 22 of numeral and so on.Also have, cover mark 22 thereby be coated in as the phosphorescent paint that can send pale green light 21 same among first embodiment on the whole rear surface of dial.Therefore, the surface of plate 20 is very smooth, and the rotation of every root pointer is not interrupted.The displaying principle of this display panel and first embodiment's is identical.

Fig. 5 shows a dial 3 according to third embodiment of the invention, and the

mark

12 and 22 that wherein is presented in Fig. 3 and 4 respectively occurs with a kind of form with opening letter 32 partly.The position that letter 32 forms is positioned at the upper surface of transparent panel 30, but also can be positioned at the rear surface of plate 30.Because as previously mentioned, be coated with on the rear surface of plate 30 with a kind of phosphorescent paint 31, the center of letter 32 is partly occupied by phosphorescent paint 31.

Therefore, in bright light environments, be that the observer recognizes in the mode that erect image shows by having tone coating and approaching the mark that the opening letter 32 of the absinthe-green phosphorescent paint that swoons of white formed as daytime.

In dim environment as night, thereby phosphorescent paint 31 is owing to sending light opening letter 32 is apparent on the front surface of dial with the form of its shade when it is in the energy of storing in the bright light environments, thereby letter 32 is recognized in the mode that erect image shows.

Fig. 6 shows the dial 4 according to fourth embodiment of the invention.As shown in FIG., the opening letter 42 that serves as a mark is to be formed on the front surface of transparent panel 40 by the coating that screen printing uses a kind of its color to be different from phosphorescent paint 41 that will coating.In this example, it is light-proofness that coating might not require.The framework (not shown) that a dead color is arranged on the rear surface of plate 40, and the color relation of this framework is used as the color of dial 4.Because this dial 4 itself just becomes the background of a dead color, therefore opening letter 42 just forms with a kind of coating (white) that approaches phosphorescent paint 41 colors, and the rear surface of dial 40 is to be coated with at the position that is equivalent to alphabetical opening portion to coat 41.On the upper surface of plate 40, be formed with an opening letter 42, but because letter 42 is very thin and almost be flat flat, the rotation of each pointer can not hindered.

In the bright light environments as daytime, because phosphorescent paint 41 presents a kind of light green that approaches white, bright opening letter 42 is apparent in the mode that shows with negative-appearing image that serves as a mark on the dark-coloured front surface of dial and is recognized by the observer.

In dark surrounds as night, phosphorescent paint 41 sends light with its energy of storing in bright light environments, thereby phosphorescent paint 41 is apparent in dark-coloured dial and serves as a mark from the front, and this mark is shown as the observer as the negative-appearing image as in the daytime the time and recognizes.

In the present embodiment, the shell of plate 40 back is described to have a kind of dark dark color, but it also can have bright color.But under the sort of situation, dial 4 presents a light ground, and opening letter 42 is coated with the tone coating (for example black) that one deck is different from phosphorescent paint 41 colors.

In this case, in bright light environments as daytime, because phosphorescent paint 41 presents a kind of light green color that approaches white, the opening letter 42 of bright color just serves as a mark and is apparent on the front surface of dark-coloured plate, and this mark is recognized by the observer in the mode that erect image shows.

In above-mentioned example, in bright light environments as daytime, because phosphorescent paint 41 presents a kind of pale green color near white, the opening letter 42 of bright color serves as a mark and is apparent on the dial from the front, thereby this mark is recognized by the observer in the mode that erect image shows.

In contrast, in the dark surrounds as night, phosphorescent paint 41 sends light with its energy of storing in the daytime, thereby phosphorescent paint 41 is apparent on the dark-coloured dial from the front, and coating 42 is recognized by the observer in the mode that negative-appearing image shows, and is just in time opposite with the situation in daytime.

Fig. 7 shows a mark dish 5 according to fifth embodiment of the invention.Dial 5 comprises a transparent panel 50, is provided with opening letter 52 on the rear surface of plate.The same among the formation of opening letter 52 and the 4th embodiment, if the color of shell at plate 50 back sides is dark, opening letter 52 is described with the coating (for example white) of the color that approaches phosphorescent paint, if and the color of shell becomes clear, opening letter 52 is just described with a kind of coating (for example black) that is different from the color of phosphorescent paint.In addition, 51 of phosphorescent paints are coated in and are equivalent on plate 50 rear surfaces on the opening position partly.Therefore, the front surface of plate 50 is very smooth, thereby the motion of each pointer can not hindered, and identical among the demonstration of display panel and the 4th embodiment.

Fig. 8 shows a dial 6 according to sixth embodiment of the invention.Dial 6 comprises a transparent panel 60, on its front surface, dispose opening letter 62, this letter is described with the tone coating of a kind of dark color (for example black), and letter (numeral or symbol) zone in addition is coated with the bright color coating 60a that is different from phosphorescent paint 61 colors with a kind of.The rear surface of transparent panel 60 is coated with phosphorescent paint 61.Therefore, the front surface of plate 60 is very smooth, and the rotation of every root pointer can not hindered.

In the bright light environments as daytime, because phosphorescent paint 61 presents a kind of light green color that approaches white, the dark opening letter 62 that its color is different from phosphorescent paint 61 serves as a mark and is apparent on the surface of dial from the front.Thereby phosphorescent paint 61 is recognized in the mode that negative-appearing image shows.

Fig. 9 shows a dial 7 according to seventh embodiment of the invention.This dial comprises a transparent panel 70, dispose opening letter 72 on its rear surface, this letter is described with the dark coating that is different from phosphorescent paint 71 colors, opening letter 72(numeral or symbol) in addition zone is then with a kind of coating 70a coating of bright color.Therefore, the rotation of the very smooth and every root pointer of front surface of plate 70 can not hindered.Identical among the procedure for displaying of this display screen and the 6th embodiment.

Figure 10 to 12 shows the dial 8 according to eighth embodiment of the invention.Dial 8 comprises a transparent panel 80, and its rear surface applies with a kind of dark coating that is different from used phosphorescent paint color 81, reserve as opening partly the part of 81a make it become mark as numeral and so on.The rear surface of plate 80 is coated with last layer phosphorescent paint 82 corresponding to opening part 81a.In 87, one minute hands 88 of hour hands and alarm clock pin 89 of rotating on the dial 8, be coated with one deck phosphorescent paint on the top end surface of hour hands 87 and minute hand 88, thereby form

luminous component

87a and 88a respectively.The shell of time meter and alarm clock button basically with Fig. 1 in identical, so they are marked by identical label.

In bright light environments as daytime, because phosphorescent paint 82 presents a kind of light green color near white, phosphorescent paint 82 is apparent on the dark dial 8 mark as bright color from the front, thereby this mark can be used as negative-appearing image and is shown as the observer and recognizes.

In the dark surrounds as night, phosphorescent paint 82 sends light with its energy of storing in bright light environments, thereby phosphorescent paint 82 is apparent in and serves as a mark on the dark dial and coating 82 is shown as the observer as negative-appearing image and recognizes.In this case, because dial is dark, the time is differentiated by the luminous part 87a of hour hands and minute hand and the position of 88a respectively.

In the present embodiment, be coated with the dark coating 81 that is different from the phosphorescent paint color in numeral or symbol part in addition as plate lip-deep opening part 81a after 80s, it also can be coated with to be different from the bright color coating of phosphorescent paint color, in this case, dial 8 just becomes a bright substrate.

In the bright light environments as daytime, phosphorescent paint 82 presents a kind of pale green color that approaches white, and coating 82 is apparent in bright color from the front dial 8 serves as a mark, thereby mark is shown as the observer as erect image and recognizes.

On the other hand, in the dark surrounds as night, phosphorescent paint sends light with its energy of storing in bright light environments, thereby phosphorescent paint 82 is apparent on the dark dial from the front, and phosphorescent paint 82 is just recognized for the observer shows as negative-appearing image.

Figure 13 shows ninth embodiment of the invention.A dial 9 comprises a transparent panel 90, and its front surface is coated with the coating 91 that is different from used phosphorescent paint color with a kind of, reserves an opening part 91a so that form a mark as numeral and so on.The part that is equivalent to opening part 91a on the plate surface after 90s is coated with phosphorescent paint 92.The coating that is different from the coating 91 of phosphorescent paint color is thin and almost flat flat, and the rotation of each pointer can not hindered.Just the same among the procedure for displaying of dial and the 8th embodiment.

Figure 14 to 16 shows tenth embodiment of the invention.Dial 1F comprises a transparent panel 10F, disposes the mark 12F as numeral or scale and so on that forms by screen printing with the dark tone coating that is different from the phosphorescent paint color on its front surface.In addition, has the phosphorescent paint coating 11F that is equivalent to various mark 12F respectively on the rear surface of plate 10F.In the present embodiment, phosphorescent paint coating 11F is not all but partly forms so that a circular rings to be provided.Therefore, though mark 12F is to use tone coating to be formed on the front surface of plate 10F since mark be approach and almost be flat flat, so the rotation of each pointer can not hindered.At a hour hands 17F, among minute hand 18F and the alarm clock pin 19F, the top of hour hands 17F and minute hand 18F all is coated with phosphorescent paint by printing, thereby forms luminous part 17Fa and 18Fa respectively.The shell of time meter and alarm clock button basically with Fig. 1 in identical, thereby they are marked by identical label.

In the bright light environments as daytime, phosphorescent paint 11F presents a kind of pale green color that approaches white, thereby each dark mark 12F is apparent on the surface of dial from the front, recognizes thereby be shown as the observer as erect image.

On the other hand, in dark surrounds as night, phosphorescent paint 11F sends light with its energy of storing in bright light environments, thereby the annular of mark 12F by its shadow falls being apparent in onboard invention light on the dial partly on, mark 12F also can be used as erect image and is shown as the observer and recognizes like this.In addition, because annular partly is luminous, and hour hands 17F, minute hand 18F and alarm clock pin 19F are also luminous brightly, so the position of pointer just can be recognized.

Figure 17 shows a dial 1G according to eleventh embodiment of the invention.Dial 1G comprises a transparent panel 10G, and surface configuration is just like the mark 12G of numeral and so on thereafter, and this mark is as describing with dark tone coating among the tenth embodiment.In addition, the rear surface of plate 10G have the annular phosphorescent paint coating 11G mark 12G is covered, this with the tenth embodiment in the same.Therefore, the surface of plate 10G is very smooth, thereby the rotation of pointer can not hindered.Just the same among the display mode of display panel and the tenth embodiment.

Though phosphorescent paint 11F and 11G are according to the tenth and the 11 embodiment, but the present invention might not be only limited to this, self-evident, paint coatings can be coated with as circular or square and so on Any shape, as long as they lay respectively at the position that is equivalent to mark 12F and 12G like this.

In the tenth and the 11 embodiment, partly with interior and do not apply anything in addition, so the color relation of shell 15 is its original colors in each annular of plate 10F and 10G.In contrast, when the color at above-mentioned position is planned colouring discrimination with shell when coming, a kind of tone coating different with color of shell can be respectively be applied on the preceding and rear surface of

plate

10F and 10G on interior and in addition position in the annular part.In this case, recognize in as the bright light environments in daytime or even if scribble the mark of tone coating as being shown as the observer as erect image in the dark surrounds at night.

Figure 18 shows a dial 1H according to twelveth embodiment of the invention.Dial 1H comprises a transparent panel 10H, disposes the mark 12H as numeral and so on that depicts with dark tone coating as among the tenth embodiment on it.The position that forms mark 12H can be described as be on the front surface of transparent panel 10H, but also can be described as be on its rear surface.In addition, phosphorescent paint 11H same among a kind of and the tenth embodiment is coated on the rear surface of plate 10H, thereby forms the phosphorescent paint coating 11H of a plurality of circles that are equivalent to mark 12G respectively.

In the bright light environments as daytime, phosphorescent paint 11 presents a kind of pale green color that approaches white, thereby dark mark 12H is apparent in and is shown as the observer as erect image on the surface of dial and recognizes.

In addition, in dark surrounds as night, phosphorescent paint is stored in energy with it and sends light in bright light environments, thereby mark 12 is incident upon by the shade with them on the surface of dial and is apparent on this surface, and mark 12H is shown as the observer as erect image and recognizes.

In the 12 embodiment, because the part beyond plate 10H is equivalent to mark 12G and circular phosphorescent paint coating 11H separated from each other is not coated any coating, so the color relation of shell 15 is its original colors, in this case, even if the mark that forms by tone coating in as the bright light environments in daytime or as also being shown as the observer in the dark surrounds at night, recognized as erect image.

Figure 19 shows a dial 11 according to thriteenth embodiment of the invention, and wherein the mark 12G of the mark 12F of Figure 16 or Figure 17 occurs with opening letter 321 forms.Though opening letter 321 is formed on the front surface of transparent panel 301, it also can be formed on its rear surface.As stating, because circular phosphorescent paint coating 311 is arranged on the position that is equivalent to opening letter 321 on the rear surface of plate 301, the central part of opening letter 321 is just occupied by phosphorescent paint coating 311.

In bright light environments, by with a kind of tone coating with approach mark that the opening letter 321 described of light green phosphorescent paint 311 of white constitutes and be shown as the observer with erect image and recognized as daytime.In dark surrounds as night, phosphorescent paint coating 311 is sent light with its energy of storing in bright light environments, thereby opening letter 321 manifests thereon by its shade is incident upon on the bright annular surface, and opening letter 321 still is shown as the observer as erect image and recognizes.

In the 13 embodiment, be formed within the annular phosphorescent paint coating 311 that is equivalent to each opening letter 321 on the plate 301 and partly be not coated with in addition by opening with any coating, the color relation of shell 15 is its original colors.On the other hand, if partly want a kind of color that is different from shell within above-mentioned and in addition, then the forward and backward surface of plate 301 can be coated with the tone coating of last layer and shell different colours.In the sort of situation, no matter the mark of tone coating is recognized in as the bright light environments in daytime or as being shown as the observer with erect image in the dark surrounds at night.

Figure 20 shows a dial 1J according to fourteenth embodiment of the invention, and mark 12H wherein as shown in Figure 18, is to be represented by the opening letter 32J that describes with the dark tone coating among the tenth embodiment.Though opening letter 321 is formed on the front surface of transparent panel 30J, it also can be formed on its rear surface.As described, because the rear surface of plate 30J has a plurality of circular phosphorescent coating 31J that are separated from each other to be equivalent to opening letter 32J respectively, so the central part of each opening letter 32 is occupied by each phosphorescent paint coating 31J.The procedure for displaying of this dial is entirely identical to the 13 embodiment.

In the 14 embodiment, do not coat any coating owing to be equivalent to be formed on the annular phosphorescent paint coating 31J position in addition of each the opening letter 32J on the plate 30J, shell 15 just manifests with its original color.In contrast, if above-mentioned position in addition wants to have the color different with shell, then the position of the front or rear surface of plate 30J beyond each phosphorescent paint coating 31J can be coated with one deck tone coating different with color of shell.In this case, though the mark of describing with tone coating in as the bright light environments in daytime or as being shown as the observer as erect image in the dark surrounds at night, recognize.

Therefore, the display panel that scribbles phosphorescent paint according to the present invention comprises a transparent panel, scribble a thick-layer phosphorescent paint coating on its rear surface, do not have uneven part on the front surface of transparent panel, even if thereby show and to be seen clearly also very easily in dark surrounds.In addition, because the front surface of transparent panel is flat, the action of each display pointer is not interrupted, so the gap between front surface and each pointer can reduce, and causes reducing on this equipment size.In addition, by being coated with the phosphorescent paint coating on the whole rear surface of transparent panel, the identification of demonstration just no longer need form a luminous component on each display pointer, and this more effectively helps the reducing of thickness of this equipment again.In addition, even if the use of phosphorescent paint makes that also can obtain erect image in dark surrounds shows.

Claims

1, a kind of display panel, it comprises a transparent panel, the rear surface of this plate is coated with a kind of phosphorescent paint, and disposes the mark as numeral, symbol or scale and so on that forms with a kind of tone coating that is different from described phosphorescent paint color on its front surface.

2, a kind of display panel, it comprises a transparent panel, disposes the mark as numeral, symbol or scale and so on that forms with a kind of tone coating on the rear surface of this plate, and is coated with a kind of phosphorescent paint to cover in described mark on its whole front surface.

3,, it is characterized in that each described numeral wherein or described symbol all occur with a kind of form with opening letter partly according to the display panel of claim 1 or 2.

4, a kind of display panel that scribbles a kind of phosphorescent paint, it comprises a transparent panel, dispose mark before or after this plate on the surface as numeral or symbol and so on, the form of the opening letter that the coating that each this mark all takes a kind of usefulness to be different from used phosphorescent paint color is depicted as, and the opening part partly that is equivalent to described each mark on the rear surface of wherein said transparent panel is coated with described phosphorescent paint.

5, according to the display panel of claim 4, it is characterized in that wherein being positioned at each described opening letter, the described transparent panel beyond numeral or the symbol partly is coated with the coating with a kind of bright color.

6, a kind of display panel that scribbles a kind of phosphorescent paint, it comprises a transparent panel, scribble the coating that a kind of its color is different from described phosphorescent paint color on the front or rear surface of this plate, reserve one and be formed with on it as the part of the mark of numeral or symbol and so on as an opening partly, the rear surface of described plate is equivalent to be coated with described phosphorescent paint on the described opening part partly.