TW200407050A - Manufacturing method of light-storage type electroluminescent sheet - Google Patents

Abstract

The present invention provides a manufacturing method of light-storage type electroluminescent sheet, which is characterized in: adding light-storage powder into the light-emitting layer of the electroluminescent sheet, or sandwiching the other light-storage layer outside the light-emitting layer. The basic structure of the electroluminescent sheet comprises a transparent substrate, a front (transparent) electrode layer, a light-emitting layer, a dielectric layer, a back electrode layer and a passivation layer. Since the material of the light-emitting layer is doped with light-storage powder or sandwiches the other light-storage layer, the electroluminescent sheet can be excited by receiving sun light, general illumination light source or even electroluminescent sheet with appropriate range of wavelength (can be the light emitted by the electroluminescent sheet itself), so as to store energy. In addition to preserve the electroluminescent function of a general electroluminescent sheet, it can also emit residual light continuously without power supplying, so as to achieve the purpose of saving energy and emergency indication for the function of display. On the other hand, the light-storage type electroluminescent sheet can also have the option of selecting the electroluminescent material. Through the auxiliary modulation of DC/AC inverter or AC frequency converter to utilize the blue-shift of the emitted light generated by high-frequency driving, the energy-absorbing effect of the light-storage powder material can be enhanced with a better wavelength-matching light source. Thus, the effect of self-excitation and cascade phosphorescence can be achieved without being irradiated by sun light or a general light source.

Description

200407050 V. Description of the Invention (1) "Background of the Invention" Due to the development of information technology, flat display devices F p D have gradually become the mainstream in electronic application products. For example, various supplies in daily life, such as personal computers, notebook computers, Instrument panels, indicating devices, advertising signs, decorations, and so on are all examples of many applications, and cold light devices (cold light sheets) are one of the important categories of flat display devices FPDs. Cold light is a kind of electroluminescence (EL). It was first discovered by German physicist G · j) estr 丨 au in 1936. After the development of the year, the so-called cold light Device, including Thick-film / Powder type / Dispersion type f-Thin-film cold light device driven by AC or DC, where thick-film cold light sheet or ridge is used to emit light Inks or pastes made of powders, resins, additives, solvents, etc. are made by printing or other feasible coating methods. On the other side, film-type cold light sheets or devices are usually made by evaporation (Dep0siti) 3 in other special ways. The so-called cold light device (cold light sheet) in the present invention refers to a thick film type, and its main production procedure is to sequentially on a transparent substrate (glass or various transparent substrates with transparent conductive properties). Lightning% ^ Excitation light substance (PhOSPh〇r; such as 211: Cu, ZnS: Mn, etc.) and dielectric, π quality (such as BaT103 or other high dielectric materials) and silver (aluminum, copper, nickel can be opened Graphite, etc.) installed with appropriate protective layer or backing, so that a cold light film can be added immediately, and then coupled with the power supply and converter (Invrter), and the auxiliary converter (Frequency c〇nverter) , You can finish the dream of the light * ancient life s π, ~ ~ nine tablets 疋 a kind of conversion of electrical energy into ^ a redundant and quot; with the control and operation of the voltage and frequency

200407050 V. Description of the invention (2) ___, and the cold light source—4 ^ ^ and 40 0 Hz, this average ^ is the earliest work is a standard voltage plate represented by an aircraft with a voltage and frequency of 110 volt light source The rate of early use of cold light is usually from 40 volts to 220 volts. Commercial products pass 50 Hz to 1000 Hz or above ^ The frequency can be determined by changing the brightness or color of cold light by electricity; == Or the frequency will change as various blue, green, yellow / orange can be taught at different wavelengths? "", To obtain other different V colors, ^ letter: a variety of computers, notebook computers = cold light applications, remote control, electronic notepad, electronic blood, voice plastic, telephone photocopying machines, cash registers, electronic scales , Home: materials, fax machines, sources; instrument panels used in the automotive industry; door panels :: meters, etc .: backlight third brake lights' lighting, etc .; master; foot, bluff license plate, label, six, g s mouth "No, Cotai, house number, entrance and exit? No: F, engineering construction signs, elevator floor signs, staircase escapes; = 1 off display, wall light installation #, table lamp design, etc. 1 ^, diamond cards, business photo frames, Christmas lights, gifts and other gifts Lift. Based on the above ... It can be said that the current cold light cracking is responsible, and the inferior indicator device is one of the mainstream applications. However, if you need to, "m pieces of power outages or other emergency conditions can not achieve the inferior instruction function. It is a major drawback in the application of the method of making cold light storage devices (cold light film), which combines: first: the functional characteristics of the electric rabbit, under normal conditions, driven by the power supply, the function is' power off, Power outages or other emergencies can also be achieved through the use of animal light materials to achieve afterglow function to achieve the killing and instructions

Page 7 V. Description of the invention (3) Purpose # $ 面 'is excited and stored energy by the light-storing material light source, / b After sunlight, general white lighting emits afterglow, ti, station-in the absence of power supply, hair out The light shows and indicates the day ^ ^ > Λ, below, the purpose of sustainable. The early sulfide f: 5 'can achieve energy saving. S: Bl, Ca & s: Bl, etc. are all short-acting types = their light h, ZnCds: Cu, Ca are limited, so far no cold light and materials have been found. The attack should not be long, the application price §t ^ M, ^) U „SrAl2〇4: Eu; t "

CaO. 5A 12 04 .Eu; Dy, CaAl2 04 .Eu.n 2 4 .Eu; Nd, SrO. 5 materials have been developed one after another, and the application of the long-term light-storing materials such as long-term light storage is feasible. Sex. In addition, many cold-light devices are used for cold-light installations (cold-light is used in places where the light source is inadequate, and can be stored (cold-light film). It should be fully absorbed by the light source to stimulate the stored energy = daylight'-like lighting. Film) should have enough afterglow effect. How to make the cold light in the ordinary light is inadequate? One of the missing, because the original power of the film self-excitation to store light energy, in :, can still be used cold light effect The light emitting effect is also the main focus of the invention. After the interruption, it can grow. Therefore, how to provide a method that can save energy. Or in other emergency situations, φ can pass through the f light material as much as power failure. The purpose of the instruction: a light-storing cold light film system: self-excitation inspired by light and light sources :: bitterness: J :: film making party & 'is the motivation of the inventor of the present invention Where: More; 'These concepts and technologies' can also be applied to similar types of Eie ctroluminescence devices or other light-emitting display elements. 200407050 V. Description of the invention (4) "There are bells here, Tai'an eight experiences, and have been engaged in related industries for many years. They are: The method of making cold-light breeding animal light-type cold-light film 'is characterized by a light layer, and these cold-light layers are another source. Or even said that the cold light that is a long range of light emitted by the general white illumination light, which accounts for the first day of the month, is commonly used for white lighting. (In addition to the function of these cold light films, the energy is stored in the sub-^^, except for the reservation. Generally, the electric excitation light b of the cold light can continue to emit afterglow under the power supply, and the light-emitting time of the bell "2" or even "0" or more, as far as the display function is concerned, 'more can Achieve the purpose of saving energy and emergency instructions. In addition, the wavelength matching characteristics of luminescence and absorption of electroluminescent materials and light storage materials can be considered: to achieve the efficiency of Cacade Phosphorescence, as mentioned above, the general light storage materials Light waves with a wavelength in the range of 200 to 47 nm have the ability to absorb and store this force. 'If you choose to have an electrically excited light material in this range (such as: ZnS: Cu; 0sram / Sylva = ^ 6〇or 62 Phosphor etc .; in The emission wavelength at 100V / 40 0 Hz is 3 9 0 η ~ 6 4 0 η), it can be made into a self-excitation type (seif-exited) light-storage type cold light sheet or device; it is worth mentioning that Some related studies on AC-EL) have pointed out that the blue-shi ft phenomenon caused by increasing the driving frequency, that is, the emitted light waves can be tuned to have a shorter wavelength range, which can further strengthen The absorption and storage efficiency of the light-storage material effectively achieves the purpose of cascade light emission. Therefore, these cold light sheets (devices) can also be used by AC-DC converters (Invrter) or AC frequency converters (Frequen

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V. Description of the invention (5) With the aid of C yc ο η V erter), the blue light phenomenon (B 1 ue-shift) of luminescence generated by the modulation of the high-frequency drive is used to strengthen the light and light of the animal with a light source with high band matching. The energy-absorbing effect of the material can achieve the effect of self-excitation (Self-exitatin) without the need to receive sunlight or a general light source. "Technical content, characteristics and effects" In order to make your examiners convenient, simple and excellent. The points and their effectiveness can be described in detail as follows: The drawing numbers show that the other features of the invention can be more clearly understood. The present invention is incorporated with a DC-AC converter 2 · 10 11 14 12 13 15 16 17 A · B. C · D · cold light sheet · AC frequency converter (Frequency converi: er) • cold light sheet • • light storage Powder • Substrate layer (transparent substrate layer) • Front electrode layer (transparent electrode layer) • Dielectric layer (insulating layer) • Back electrode layer • Protective layer ^ material layer (transparent substrate) layer Animal light layer front electrode (transparent Electrode) layer

200407050 V. Description of the invention (6) E · · Light storage powder Η, Η 1 · · Protective layer 5 · • Transparent substrate / transparent conductive layer 5 1 ·· Coated light emitting layer 5 10 · • Polymer / ink, including luminescence Powder, light-storing powder, resin, solvent and necessary additives 5 2 ·· coating dielectric layer 5 2 0 · • paste / ink including dielectric powder, high dielectric resin, solvent and necessary additives 5 3 ·· Coating the back electrode layer 5 3 0 · • Paste / ink, can choose silver paste, carbon paste or any other suitable conductive materials 5 4 ·· Coating back protective layer 6 · · Transparent substrate 6 1, 6 3 · · Coated light-emitting layer 6 10 ·· Coated with light-storage layer paste / ink, including light-storing powder, resin, solvent, and necessary additives 6 2 ·· Coated transparent conductive layer 6 2 0 · • Slurry / ink, containing I Τ 0 or A Τ 0 powder, resin, solvent and necessary additives, etc. You can also use conductive polymers such as PED0T, PANI and other transparent conductive layer materials 6 3 0 · • paste / ink, which contains luminescent powder, light storage Powder (with or without light-storing powder), resin, solvent and necessary additives 6 4 ·· Coating dielectric layer

200407050 V. Description of the invention (7) 6 4 0 · • Paste / ink, including dielectric powder, high dielectric resin, solvent and necessary additives 6 5 ·· Coating back electrode layer 6 5 0 · • Paste / Ink, silver paste, carbon paste, or any other suitable conductive material can be selected 6 6 ·· Protective layer 7 ·· Transparent substrate / Transparent conductive layer 7 1 ·· Light storage layer 7 10 · • Slurry / Ink Including light-storing powder, resin, solvent and necessary additives 7 2 ·· Coating light-emitting layer 7 2 0 · • Paste / ink, which contains light-emitting powder, light-storing powder (with or without adding light-storing powder), resin, solvent And necessary additives 73, 82 ·· coating dielectric layer 7 3 0 · • paste / ink, including dielectric powder, high dielectric resin, solvent and necessary additives 7 4 ·· coating back electrode layer 7 4 0 · · Paste / ink, can choose silver paste, carbon paste and any other suitable conductive materials 7 5 ·· Coating back protective layer 8 · • Transparent substrate / transparent conductive layer 8 1 ·· Coating light emitting layer 8 10 · • Paste / ink, which contains luminescent powder, light storage powder (with or without light storage) ), Resins, solvents and other additives necessary

Page 12 200407050 V. Description of the invention (8) 8 2 0 · • Coating dielectric layer paste / ink, including dielectric powder, high dielectric resin, solvent and necessary additives 8 3 ·· Coating back electrode layer 8 3 0 · • Paste / ink, silver paste, carbon paste or any other suitable conductive material can be selected. 8 4 ·· Coating back protective layer 8 4 0 · • Coating paste / ink: containing light-storing powder, resin , Solvents and necessary additives 8 5 · · Light storage layer

9 1 ·· Self-excitation block I 9 2 ·· Blue shift phenomenon (Blue-shi ft) 9 3 ·· Self-excitation block Π As shown in the first figure, the present invention provides a light-storing cold light sheet The method is characterized in that: a light-storing powder 1 4 1 is added to the light-emitting layer 14 in the general cold-light sheet 11 so that it can receive daylight, a general illumination light source, or even cold light in an appropriate wavelength range (for such cold-light sheet) 1 1 itself emits light) to excite and store energy. In addition to retaining the general cold light electrical excitation light function, it can continue to emit afterglow without power supply. As far as the display function is concerned, it can achieve energy saving and Purpose of emergency instructions. The basic structure of a general cold light sheet 1 1 includes: a base material layer (transparent base material layer) 1 2 whose material can be PET or any other suitable transparent material; a front electrode layer (transparent electrode layer) 1 3 whose main material can be It is IT〇, ΑΤΟ, PE DOT, PANNI or any other suitable transparent conductive material;

Page 13 200407050 V. Description of the invention (9) Light-emitting layer 1 4 whose main ZnS: Cu, ZnS: Mn etc. light-emitting material; dielectric layer (insulating layer) 〇3) or any other applicable back electrode Layer 1 β, material (A1), nickel (Ni) electrode material; other necessary auxiliary layer layer 17, etc., in addition to the use, each layer of material if the oil or ink in addition to the above-mentioned additives and so on. According to the light-storing type cold and feasible light-storing material of the present invention, the light-up time can reach the early short-acting type, but the afterglow light-storing material, such as & Α1Λ: Eu 5Al20, "E ,, CaAl2 〇4 · The actual selection is required to produce, etc. Wangguang materials can include materials such as zinc sulfide series fluorescent materials (•) or any other materials that have electrical excitation light (the main material contains barium acid (BaTi Nanjie) Electrical materials; ', the main material can be carbon (c), silver (Ag), copper (Cu) or any other suitable conductive (such as moisture absorption, moisture resistance, colorants, etc.) and protection of ready-made film materials (such as transparent substrates) , Protective layer, etc.) Ink (Ink) or paste (Paste) coating & made S, the main components need to add resin, solvents and various light-emitting sheet 'in the light-emitting layer and specially incorporated any do not increase the number of coating , But can play the residual light effect minutes to more than 20 hours, of which light storage materials such as ZnS · Cu, ZnCdS: Cu, CaS: Bi, the effect is poor, or long-acting oxide series; Dy > BaAl2 04: Eu ; Nd > SrO. 5Ca0. Eu; Nd〇r Sm, etc., can be mixed or according to different luminous effects, Color and time chart shown in FIG four and two, play reservoir layer afterglow light storing effect of luminescent film layer B is placed in position 2 of viable

200407050 V. Description of the invention (ίο) (including process methods Figure 2, Figure 3, Figure 4 and so on). In FIG. 2, the light storage layer B is sandwiched between a substrate layer (transparent substrate) layer a and a front electrode (transparent electrode) layer C. In Figure 3, the light-storage layer B can be sandwiched between the front electrode (transparent electrode) layer C and the light-emitting layer d (with or without light-storage powder E). In addition, in Figure 4, the light storage layer b can be placed between the front electrode (transparent electrode) layer C and the light-emitting layer d. However, to protect the light storage material, it is also possible to consider adding a protective layer η on the light storage layer B. 1 . It must be particularly noted that: in each light-setting sheet structure having a single light-storage layer B shown in FIG. 2, FIG. 3, and FIG. 4, a light-storage powder 1 4 1 may be added to the light-emitting layer d as shown in FIG. In this way, the number of coatings is not increased, and at the same time, the light storage efficiency can be enhanced. On the other hand, as shown in Figures 2, 3, and 4, in the various methods for making light-storage cold light sheets, the 'light-storage layer B pattern may be different from the light-emitting layer d pattern, and has overlapping and non-overlapping parts, where the overlapping parts It has the functions of self-excitation (SeH-eXltat10n) and cascade light emission (^ ⑺ 心 ph0s ph〇rescence), and the non-overlapping part can still be illuminated by sunlight or general light source, and can still play a residual role Light efficacy. Please refer to FIG. 5, a block diagram of the manufacturing process of the kettle water 4 ^ according to the present invention is a transparent λ 桠 2: light sheet manufacturing method 1 T / πο) coated with a light-emitting layer 5 i polydiene light Powders, resins, solvents, and necessary additives, etc. R soil contains luminescent powder, recoatable dielectric layer 5 2 paste / ink, bag, on top of the light emitting layer, and solvent and necessary additives 5 2 〇, powder, 咼 dielectric resin electrode layer 5 3 paste / ink, silver 襞 '; 1 can be selected. The back layer is coated with an electrically conductive material such as 5 3 0 on top of the electrical layer. Finally, it can be coated with any other suitable 1-layer back protective layer 5 4 or as appropriate.

200407050 V. Description of the invention (11) When the back protection method achieves the purpose of protecting the light sheet. Please refer to Figure 6, the block diagram of the production method of the light-type cold-free sheet of this article. _ Developed by the above-mentioned structure. Materials such as P ΕΊ 'ΠΤ)) top coating :, · coating layer paste / ink, including light-storing powder, resin, Luo ... 彳: fire must be added. (V, 6 1 0, coating on the light-storing layer Fabric transparent conductive layer 62 2 paste / ink, including IT 0 or AT 0 powder, resin, solvent and necessary additives, etc. You can also use conductive polymers such as: PED0T, PAN [, etc. on top of the transparent conductive layer material 620 instead. Coating light-emitting layer 6 1 slurry / ink 'which contains light-emitting powder, light-storing powder (with or without light-storing powder and necessary additives, etc. 6 3 0), and then coating the light-emitting layer 63 with dielectric Layer 64 polymer / ink, including dielectric powder, high-dielectric resin, necessary additives such as solvent, etc. The dielectric layer is coated with a back electrode layer 6 5 paste / ink, silver paste, Carbon paste, any other suitable guide. Electrical materials, such as 650, and finally can be coated with a protective layer 6 6 or a suitable protective film. Please refer to FIG. 7 for a block diagram of the manufacturing process of the light-storage type cold light sheet of the present invention. Based on the above-mentioned structure, another light-storage type cold-light sheet manufacturing method is developed, which is a transparent base The transparent light-conducting layer 7 (such as PET / Π_ 0) is coated with a light-storage layer 7 1 slurry / ink · Contains a light-storage wheel: ': agent and necessary additives 7 1 0, and the light-storage layer is coated with light Layer 7 2 slurry / ink, which contains luminescent powder, light storage powder (with or without adding light storage powder), resin, solvent, and necessary additives, etc. 2 ϋ — dielectric coating on the light layer Layer 7 3 Slurry / Ink > Containing Dielectric Powder 'High

-1-1-ί · Μ -Γ '· τιunh.f., Λ, τι, 1 · 200407050 V. Description of the invention (12) The purpose of the dielectric tree, solvents and necessary additives, etc. 7 3 〇 cloth back electrode layer 7 4 slurry / ink, can be coated on the ^^ layer with any suitable conductive material, etc. 7 4 Ω, Tian β ~ water rabbit poly other gα, quotient # 外 外 太 々 * 'take: you can apply after The back surface protective layer 75 may achieve the purpose of protecting the light sheet in a proper A stomach manner. m Please refer to Figure 8. This is a block diagram of the production process of Yu Fen. Through the description of the method of making cold light film, the method of making four light films is to transform the transparent beautiful material wood into another light-storing cold. 〇 = Fabric light-emitting layer " polymer material / ink, powder, with or without adding light-storing powder), resin, solvent additives, etc. 8 1 〇, the dielectric layer 8 2 slurry is coated on top of the light-emitting layer Factory, Yuhei, including: dielectric powder, high dielectric resin, solvent and necessary additives, etc. + 8 2 soil,, the dielectric layer is coated with the back electrode layer 8 3 slurry / ink, silver paste, carbon Any other suitable conductive materials, such as 8 3 0, can be widely coated with a back surface protective layer 8 4 or can be protected by a suitable back protection method 1, the animal light layer 8 5 is coated with slurry / oil, ink: contains light Powder, resin and necessary additives 8 4 0. Finally, the light storage layer 8 5 can be coated on the other side (non-transparent conductive layer) of the transparent substrate / transparent conductive layer (such as PET / IT0). For the light-storage material, it is also considered to add a θ-layer protective layer on top of the light-storage layer. Please refer to FIG. 9, which is an explanatory diagram of self-excitation and cascade emission of a method for making a light-storing cold light sheet according to the present invention. Because the light-emitting layer of the light-emitting cold light sheet is mixed with a light-storing powder material or a light-storing layer is sandwiched outside the light-emitting layer, these light-emitting sheets can receive sunlight, general lighting sources, or even cold light in an appropriate wavelength range (for this purpose) The light emitted by the cold light sheet itself) excites and stores the

200407050

Home. However, because the general light-storage material has the absorption f storage capacity for light waves in the wavelength range of 200 to 47 nm, it is not as heavy as the luminous wavelength range of ordinary cold light sheets. If you choose to have a range between this range Light-emitting materials of light emission wavelengths such as ZnS.Cu; 〇sram / Sylvania Type 60 or 62 Phosphor etc .; at loo v / 400Hz, the emission wavelength is 3 9 0n ~ 640n) [ Note: As shown in the self-excitation block IQ 1] in Fig. 9, it can be made into a self-excitation (S e 1 f-e X ited) light-storage type cold light sheet or device. On the other hand, in addition to the choice of electro-excitation light-emitting materials, these light-storing cold light sheets can also be assisted by the modulation of DC_AC converter (Inverter) 1 or AC frequency converter (0 (Shown in Figure 1), using the blue shift phenomenon (B1 ue-shift) 9 2 generated by high-frequency driving, a cold light source with better wavelength matching [Note: self-excitation block π 9 3 in Figure 9 ] Enhancing the energy absorption effect of the light-storing powder, it can also achieve self-excitation (Sel f-ex i tat ion) and enhance the effect of cascade emission (CacadePhosphorescence). In order to make the present invention more show its progress and practicality. The advantages are listed as follows: 1. In addition to the function of combining cold light and light storage, in addition to retaining the general cold light electrical excitation light function, it can continue to emit residual light without power supply to achieve the purpose of light display. 2. The light-storage materials can be excited by sunlight and general lighting sources and store energy. In terms of display functions, these cold-light films (devices) can be 200407050. V. Description of the invention (14) 3. These light-saving cold-light films In addition to the choice of materials that can be electrically excited, it can also use the DC-AC converter (I nverter) or AC frequency converter (Frequency converter) to adjust the blue-shift phenomenon of light emission generated by high-frequency driving. (Blue-shift). The energy absorption effect of light-storing powder is enhanced by a cold light source with better wavelength matching. In this way, self-exitation and cascade light emission can be achieved without receiving sunlight or ordinary light sources. (Cacade Phosphorescence). 4. The combination of technologies is progressive, feasible and innovative. 5. Manufactured products have a wide range of applications and have high utilization value in industrial and commercial circles and industry. Ming Ming, the original document is to be submitted for application, and Li Jian specifically stated that the member of the Commission for Development and Investigation, and that the trial had been completed. This prayer, please tell me the truth, go forward, comprehensively elevated rights

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200407050 Brief description of the drawings The first diagram is the first method of manufacturing the light-storage type cold light sheet of the present invention and the basic structure of the cold light device. The second diagram is a second structural diagram of a method for making a light-storage cold light sheet according to the present invention. The third diagram is a third structural diagram of a method for making a light-storage cold light sheet according to the present invention. The fourth diagram is a fourth structural diagram of a method for making a light-storage cold light sheet according to the present invention. The fifth diagram is a block diagram of a method for making a light-storage cold light sheet according to the present invention. The sixth diagram is a block diagram of the second method of making the light-storage cold light sheet of the present invention. The seventh diagram is a third block diagram of the method for making the light-storage cold light sheet of the present invention. The eighth figure is a block diagram of the fourth method of making the light-storage cold light sheet of the present invention. The ninth figure is an explanatory diagram of the self-excitation and cascade light emission of the method for manufacturing a light-storing cold light sheet of the present invention.

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Claims (1)

200407050 VI. Application Patent Scope 1. A method for making light-storage cold light sheet, which is mainly characterized by adding light-storage powder to the light-emitting layer in the general cold-light sheet, so that it can receive sunlight, general illumination light source or even an appropriate wavelength range The cold light (the light emitted by such cold light films themselves) excites and stores energy. In addition to retaining the general cold light electrical excitation light function, it can continue to emit residual light without power supply and display the function In terms of energy saving and emergency-instruction, these cold light sheets include at least: a transparent substrate, a transparent conductive layer (front electrode layer), a light emitting layer (adding light storage powder), a dielectric layer, and a back electrode Layer and protective layer. 2. The method of making a light-storage type cold light sheet as described in item 1 of the scope of patent application, wherein the light-storage material in the light-strip sheet is separately placed between a transparent substrate and a transparent conductive layer (front electrode layer). Among them, these cold light sheets include at least: a transparent substrate, a light storage layer, a transparent conductive layer (front electrode layer), a light emitting layer (with or without light storage powder), a dielectric layer, a back electrode layer, and a protective layer. 3. The method for making a light-storage type cold light sheet as described in item 1 of the scope of the patent application, wherein the light-storage material in the cold-light sheet is separately placed between the transparent conductive layer (front electrode layer) and the light-emitting layer, wherein, These cold light sheets include at least: a transparent substrate, a transparent conductive layer (front electrode layer), a light storage layer, a light emitting layer (with or without light storage powder), a dielectric layer, a back electrode layer and a protective layer. 4. The method of making a light-storage type cold light sheet as described in item 1 of the scope of patent application, wherein the light-storage material in the light-strip sheet is separately placed on a transparent substrate / transparent conductive layer (such as PET / I T0) in another layer. One side (non-transparent conductive layer Page 21 200407050 6. The scope of the patent application for protecting light storage materials can also be considered in the 4 layers of light storage, including “these cold light sheets contain at least one plus one or no protection layer), light storage layer, transparent ... Layer (can add surface, light-emitting layer (can be added or not)) = conductive layer (positive, lunar electrode layer and protective layer, etc.), dielectric layer 5, as described in the scope of the patent application In the method, *, the light-storage material can be a short-acting light-storage 3 two-light film made of u, Z iron Cu, CaS: Bi, coffee ... =, such as:,, σ: SrAl2 04: Eu: Dy ^ BaAl2〇 4. u Nd S: 〇 ^ Ca0.5Al2〇4: Eu; Dy ^ CaA, 〇4: Eu; Nd =, any other light-storage material (luminous substance) with phosphorescent (luminous) properties. According to the method for making light-storage type cold light sheets as described in the scope of application patent Nos. 1-4, these light-storage type cold light sheets can be passed through the DC-AC converter (Inverter) ) Or AC frequency converter (Frequency converter) modulation assistance, the use of high-frequency driving generated blue light emission (B 1 ue-shift), a cold light source with better wavelength matching enhances the energy absorption effect of the light-storing powder material, so that self-excitation can be achieved without receiving sunlight or ordinary light sources (Self-ex i The effect of tat i on) and cascade light emission (Cacade Phosphorescence) can continue to emit light for several minutes or even more than 20 hours after power interruption. 7. The light storage as described in item 2 to 4 of the scope of patent application Method for manufacturing a cold light sheet, wherein the light storage material may be a short-acting light storage material Page 22 200407050 6. Scope of patent application: A layer of light-storage layer is placed between the feasible positions of the light sheet. The light-storage layer and the light-emitting layer have different patterns, but have overlapping and non-overlapping parts, and some of them have self-excitation (S e 1 f-e X itati ο η) and cascade hair cade Phosphorescence), overlapping 杳 f5 parts of shellfish 1J still light or general light source irradiation, can still play afterglow effect. Pattern can be superimposed light (C a acceptable