CN200944276Y

CN200944276Y - Ultra-thin pad pasting LED display module

Info

Publication number: CN200944276Y
Application number: CN 200620014426
Authority: CN
Inventors: 田志辉; 简稚文
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-08-31
Filing date: 2006-08-31
Publication date: 2007-09-05
Anticipated expiration: 2016-08-31

Abstract

The utility model discloses an ultra-thin pad pasting LED display module, comprising a LED drive circuit board with output port, a translucent film and LED illuminants which are arranged on the LED drive circuit board according to different arrangements. The utility model is characterized in that a splitting sheet with grille structure is provided between the LED drive circuit board and the translucent film, the arrangement of the translucent window of the grille of the splitting sheet is corresponded with the arrangement of the LED illuminants, and the LED illuminants drive circuit board, the translucent film and the splitting sheet are closely jointed together. The utility model is of thin thickness, light weight, few producing process, and low waste product rate; by the color alternating combination of the illuminants and the translucent film, the solid color, double color and panchromatic LED display module can be produced; the translucent film can be taken off, to repair and replace the illuminants; and flexible or transparent LED display module can be produced; the module can be split, and then individual or permutation combined to form different shapes, patterns for using.

Description

Ultrathin pad pasting LED display module

Technical field

The utility model relates to light-emitting diode display spare, particularly relates to a kind of LED display module.

Background technology

LED display be a kind of be that the display module of luminophor is the unit with LED electroluminescent lamp or luminescent wafer, a plurality of modular units are arranged according to the scheme of design and the display made.It has a wide range of applications in field of display, the large display screen inside and outside as the family, stripe shape screen, information issue plate etc.Along with electronic technology, processing technology, the developing rapidly of new and high technologies such as material science, people produce and use and also have higher requirement the design of light-emitting diode display.Wish the LED display performance, the unit area resolution is higher, and color is more true to nature abundant, and price is cheaper.

A structure LED lattice module legend as shown in Figure 1 of existing LED display module comprises housing assembly 3, has led drive circuit plate 4, light-transmissive film 6 and the LED luminophor 1 that is fixed on by different arrangement modes on the led drive circuit plate of pin as can be seen.In manufacturing process, generally be that LED luminophor 1 and led drive circuit plate are put into housing assembly 3, pour into the epoxy resin sealant hot setting then whole parts are sealed.Yet this traditional LED display module exists following defective:

1. housing assembly and LED drive plate just can not be opened maintenance after the colloid hot setting is one, if find certain LED existing problems, have to scrap whole module, so its rejection rate are more than 1%, and learies is big;

2. housing assembly is because of the requirement of production technology, distance between its thickness and the LED pixel can not be too little, can only accomplish 2mm with the now general minimum of LED single color point array module dot spacing that this mode is produced, the general smallest point spacing of the double-colored module of LED is 4mm, and LED full color module dot spacing is general smallest point spacing 6mm;

3. the restriction of injecting glue technology and housing assembly, this kind module thickness is general all more than 8mm, can not satisfy the needs of ultrathin LED display screen;

4. the influence of colloid and shell weight, the display screen that this kind module is produced, weight is heavier;

5. the colloid color is generally translucent milky and Transparent color, and the color that the LED display module shows only depends on the luminophor color, can not change;

6. modular structure has determined that its production process is many, the time is long.Its manufacture craft comprises as shown in figure 18: single PCB has an injection, solid crystalline substance, bonding wire, before measurement, whole encapsulating, vacuumize, high-temperature molding, back test.Particularly, need carry out multiple working procedures such as surface coverage film, vacuum stripping bubble, encapsulating, curing and surperficial cull cleaning in order to guarantee the quality of encapsulating;

7. housing assembly has determined this kind module can not cut apart once more after finishing.

The production of LED conventional module, existing nearly 30 years history, developing into today has been a huge industry.The harmful competition state has been arrived in the competition of conventional module, and LED display module producer major part has changed the production and the application of LED luminotron over to, and LED display module manufacturer has difficulty in taking a step.Also there was the people that the LED display module was done some improvement in recent years, but most of unsuccessful, mainly show as following three kinds of patterns:

(1) technology and the mould of housing assembly are improved, made it meticulousr, outward appearance is more attractive in appearance, and this kind mode is not still jumped out the method for designing of traditional LED display module, can not tackle the problem at its root.

(2) cancellation housing assembly uses local solid glue mode.Glue point 2.1 is consolidated as can be seen in a plurality of independent part as shown in Figure 2, and this module has been jumped out the design philosophy of traditional LED display module.But still exist following defective:

1. the solid glue point in independent part because of unrestrictedly with cut apart, keep the size of colloid evenly to be not easy very much;

2. colloid is exposed to the outside for a long time, oxidation stain easily;

3. the face shaping of this LED display module has huge difference with traditional module, and the user is difficult to accept, and therefore the LED display module of this structure can not form market.

(3) use special P CB plate structure technology.On the surface of led drive circuit plate 4.2, process a plurality of grooves 4.21 as shown in Figure 3, and then the structure of some glue 2.2.This module has had leap in design, but the problem below still existing:

1. the production of this kind pcb board must use particular manufacturing craft to carry out punching press, production equipment can not use traditional PCB technology, and therefore, the pcb board majority of present this structure is produced in Taiwan and processing, other area seldom produces and processes, and its development is very restricted;

2. the pcb board cost is very high, and the price of its monolithic pcb board has surpassed the overall price of traditional LED display module on the present market, uses the production firm of LED display module can't accept fancy price like this.

Summary of the invention

The utility model is intended to overcome the defective of above-mentioned prior art, provide a kind of ultra-thin, in light weight, lattice module dot spacing can be significantly smaller than existing LED display module, and production technology is simple, cost and rejection rate reduce significantly, can replace the LED display module of the new-type structure of indoor various LED display modules in traditional LED industry.

Another purpose of the present utility model is except achieving the above object, and can also change the LED display module of the color of LED display module demonstration.

The 3rd utility model purpose of the present utility model is except reaching above-mentioned two purposes, can also allow the LED display module be divided into less, difform LED display module, and then use separately or permutation and combination after use.

For realizing above-mentioned first purpose, can adopt following technical scheme: the LED display module of this programme is the same with prior art, comprise the led drive circuit plate, light-transmissive film and the LED luminophor that is fixed on by different arrangement modes on the led drive circuit plate that have output interface, its improvement is the cutting plate that also has a cell structure between led drive circuit plate and light-transmissive film, the arrangement mode of the light inlet window of the grid of this cutting plate is corresponding with the arrangement mode of LED luminophor, and LED luminophor drive circuit board, light-transmissive film fit tightly with cutting plate and be in the same place.

In order to realize above-mentioned second purpose, can on the basis of technique scheme, select the color of LED luminophor and light-transmissive film, and carry out suitable collocation as required.For example select the LED luminophor for red, select the blue-green light-transmissive film again, the color of LED display module demonstration just becomes white like this, if be changed to green light-transmissive film, Show Color can be changed into yellow.

In order to realize above-mentioned the 3rd purpose, the light-transmissive film in above two technical schemes and cutting plate can be divided into less, difform light-transmissive film and/or cutting plate, and then use separately or use after the permutation and combination mutually.

The utility model is compared with existing LED display module, has following outstanding feature:

1. break the structure of traditional LED lattice module, combined current photoelectric material characteristics, the PCB production technology, mechanical processing technique has fundamentally changed the production technology and the structure of traditional LED lattice module.

2. LED display module of the present utility model has been cancelled the external member structure of traditional LED display module, uses to show that the module thickness that cutting plate and surperficial Filming Technology produce is very thin, and dot spacing can be done very for a short time.

3. LED display module of the present utility model uses surperficial Filming Technology, can be easy to replace.If a certain LED luminophor damages, can single maintenance or replacing, LED display module yield rate is improved greatly.

4. LED display module of the present utility model can use the light-transmissive film and the LED luminophor of different colours, very easily changes the color of display screen.

5. LED display module of the present utility model, fixing to the LED luminophor, because of having used surperficial Filming Technology, can carry out trace point glue fixing with gluing process not, cutting plate and printing opacity diaphragm have also played the effect of protecting the LED luminophor.

6. LED display module of the present utility model, existing various indoor LED dot matrix and Digital module have the big market business opportunity of tool on the alternative market.

7. LED display module of the present utility model can utilize its design feature, produces the LED display application product of ultra-thin and soft type.

8. LED display module of the present utility model can utilize its design feature, can produce transparent LED display module.

9. LED display module of the present utility model, its production process is simple, is convenient to automated production.

10. LED display module of the present utility model is applicable to indoor or outdoor LED display.

11. LED display module of the present utility model, when design can compatible existing module pin and front appearance, can replace existing market LED display module.

12. LED display module of the present utility model can be developed the LED display module that makes new advances and new LED application product according to its design feature.

The utility model is more clear to be understood with being convenient in order to make, and below by drawings and Examples it is described in further detail.

Description of drawings

Fig. 1 is the structural representation of traditional LED display module.

Fig. 2 is the structural representation of LED display module of the partial points adhesive process of prior art.

Fig. 3 is the structural representation of LED display module of the recess process of prior art.

Fig. 4 is among the embodiment of ultrathin pad pasting LED display module of the present utility model, the position view of each of composition module layer.

Fig. 5 is the structure of the LED lattice module light-transmissive film among Fig. 4 and the synoptic diagram of surface printing pattern.

Fig. 6 is the structural representation of the LED lattice module cutting plate among Fig. 4.

Fig. 7 is the arrangement synoptic diagram of the LED luminophor in the drive circuit board of the LED lattice module band LED luminophor among Fig. 4.

Fig. 8 is the synoptic diagram after fitting mutually between the drive circuit board of light-transmissive film, cutting plate and band LED luminophor among Fig. 4.

Fig. 9 is the surface printing pattern synoptic diagram of LED lattice module printing opacity diaphragm of the another kind of embodiment of ultrathin pad pasting LED display module of the present utility model.

Figure 10 is the structural representation of embodiment that adopts the utility model ultrathin pad pasting display module of SMD pin.

Figure 11 is the digital light-transmissive film surface printing of the LED pattern synoptic diagram in the foregoing description.

Figure 12 is the structural representation of the digital cutting plate of LED in the foregoing description.

Figure 13 is the structural representation of soft type ultrathin pad pasting LED display module of the present utility model.

Figure 14 is traditional LED display module technological process of production synoptic diagram.

Figure 15 is a ultrathin pad pasting LED display module technological process of production synoptic diagram of the present utility model.

Figure 16 is the OPEN direction board light-transmissive film surface printing pattern synoptic diagram of the coffee bar of another embodiment of the present utility model.

Figure 17 is the structural representation of the coffee bar OPEN direction board cutting plate that cooperates with Figure 16.

Figure 18 is the structural representation of the drive plate of the coffee bar OPEN direction board band luminophor that cooperates with Figure 16.

Figure 19 is the integral product structural representation of coffee bar OPEN direction board.

Embodiment

The following example is to further explanation of the present utility model and explanation, and the utility model is not constituted any limitation.

Embodiment 1, referring to Fig. 4,5,6,7,8.Present embodiment comprises the led drive circuit plate 4 that has contact pin pin 5, light-transmissive film 6 and is fixed on LED luminophor 1 on the led drive circuit plate 4 by the arranged mode, and the cutting plate 7 that between led drive circuit plate 4 and light-transmissive film 6, also has a cell structure, the arrangement mode of the light inlet window 73 of the grid of this cutting plate 7 is corresponding with the arrangement mode of LED luminophor 1, and led drive circuit plate 4, light-transmissive film 6 fit tightly with cutting plate 7 and be in the same place.Above said LED luminophor 1 can be LED electroluminescent lamp or LED luminescent wafer.Circle 61 in the light-transmissive film 6 is the light transmission part, and all the other are non-light transmission part; Square 71 parts in the cutting plate 7 are light inlet window, and all the other are the entity part of barrier.

Embodiment 2.On the basis of embodiment 1, LED luminophor 1 in the ultrathin pad pasting LED display module can be selected different colors respectively with light-transmissive film 6, for example select the LED luminophor for red, select the blue-green light-transmissive film again, the color of LED display module demonstration just becomes white like this, if be changed to green light-transmissive film, Show Color can be changed into yellow.The realization of light-transmissive film 6 colors can be that the light inlet window 71 part silk-screen in addition with on the cutting plate 7 on the surface of light-transmissive film has the lighttight coating that has color.Certainly, this coating also can be left the client who uses the LED display module for and go printing, so more can meet their special requirement.

Embodiment 3, referring to Fig. 9,10.The pin of the led drive circuit plate among the top embodiment is replaced by the surface patch pin by contact pin 5, and promptly SMD pin 5.1 also is fine, and so just makes the LED display module compact more.The shape of the light inlet window 6.11 on the printing opacity diaphragm 6.1 in the present embodiment can be designed as square as shown in Figure 9.

Figure 11 shows in the foregoing description, if adopt the digital light-transmissive film 6.2 surface printing patterns of LED.Wherein, numeral shows that with the light transmission part 6.21 of the figure of eight that 7 sections straight lines constitute radix point shows with the light transmission part 6.22 of circular point shape.Figure 12 shows the structure with the supporting cutting plate 7.2 of this light-transmissive film 6.2.Wherein 7.21 is the light inlet window of the figure of eight, 7.22 light inlet windows for the expression radix point.

Embodiment 4, referring to Figure 13.The said led drive circuit plate 4 of top embodiment, cutting plate 7 and light-transmissive film 6 can be hard material or soft material.If adopt soft material to make, then can make as shown in figure 13 waveform or the LED display module of other non-planar shaped.

Embodiment 5.Said led drive circuit plate 4 of top embodiment and cutting plate 7 can also be made by transparent material, so just can make transparent LED display module.

Embodiment 6.Said light-transmissive film 6 and/or cutting plate 7 can also be divided into less, difform light-transmissive film and/or cutting plate among the top embodiment, light-transmissive film after cutting apart and/or cutting plate can use separately or use after the permutation and combination mutually, to form shape miscellaneous or pattern.Certainly, supporting with it led drive circuit plate 4 also must dispose separately in the part after cutting apart.

Embodiment 7, referring to Figure 16,17,18,19.The pattern of printing comprises the pattern 6.32 of 6.31 and coffee cups of English alphabet " OPEN ", cup dish and the steam of perpendicular row as shown in figure 16 on the light-transmissive film 6.3 in the present embodiment, wherein the color of English alphabet 6.31 is red, and the color of pattern 6.32 is green; Cutting plate 7.3 as shown in figure 17, on it, made with light-transmissive film 6.3 on English alphabet and the light inlet window 7.31 and 7.32 of pattern same position and shape; The white luminous body of being fixed on the led drive circuit plate 4.3 1 be arranged in light-transmissive film 6.3 on English alphabet and the English alphabet 4.31 and the pattern 4.32 of pattern same position and shape.The output interface of led drive circuit plate 4.3 is for using lead 4.33 ways of connecting.Light-transmissive film 6.3, cutting plate 7.3 and led drive circuit plate 4.3 applying backs are constituted coffee bar OPEN direction board shown in Figure 19, and wherein internal battery and controller 8 are contained in the top of direction board.

The making of above ultrathin pad pasting LED display module embodiment is undertaken by the technological process of production as shown in figure 15, operation such as comprise that the solid crystalline substance of single or multiple modules, bonding wire, before measurement, some glue are fixed, test behind the pad pasting, cutting, dress PIN pin.

From top technological process as can be seen:

1. the ultrathin pad pasting module has been saved whole encapsulating, vacuumizes, and these three operations of high-temperature molding have greatly been saved production time and production cost.

2. ultrathin pad pasting module output pin (PIN) is installed and can be placed at last, can produce so a plurality of and together, when using mechanical automation to produce, will save many troubles like this.

3. ultrathin pad pasting module pin if use the SMD structure, can save PIN pin operation

4. the utility model module because of not using whole encapsulating, after production is finished, is pinpointed the problems after test and can be taken off surface film reparation immediately.

5. the utility model module because of not using whole encapsulating, can be replaced after the pin installation, and this has very big degree of freedom when production technology is arranged.

Along with photoelectric material, the development of PCB technology and mechanical processing technique, the LED luminophor spacing of this module will be done forr a short time, and the resolution of unit area will be higher, can produce ultra-thin superfine LED display module.

The utility model has a wide range of applications, and outside producing traditional light-emitting diode display, can produce high-quality, high request light-emitting diode display, high-grade light-emitting diode display down, and use the utility model can greatly be expanded the LED range of application, and great market is arranged.

Claims

1, a kind of ultrathin pad pasting LED display module, comprise led drive circuit plate, light-transmissive film and the LED luminophor that is fixed on by different arrangement modes on the led drive circuit plate of being with output interface, it is characterized in that between led drive circuit plate and light-transmissive film, also having the cutting plate of a cell structure, the arrangement mode of the light inlet window of the grid of this cutting plate is corresponding with the arrangement mode of LED luminophor, and LED luminophor drive circuit board, light-transmissive film fit tightly with cutting plate and be in the same place.

2, ultrathin pad pasting LED display module according to claim 1 is characterized in that said LED luminophor can be LED electroluminescent lamp or LED luminescent wafer, and its arrangement mode on the led drive circuit plate can be that matrix or numeral are or/and pattern.

3, ultrathin pad pasting LED display module according to claim 2 is characterized in that said LED luminophor and light-transmissive film can be respectively different colors.

4, ultrathin pad pasting LED display module according to claim 3 is characterized in that the light inlet window part silk-screen in addition with on the cutting plate on the surface of said light-transmissive film has lighttight coating; Light-transmissive film can be PC or organic glass or glass or organic film or photovoltaic films or blooming.

5, ultrathin pad pasting LED display module according to claim 4, the output interface that it is characterized in that said led drive circuit plate can be contact pin or surface patch pin or connect lead.

6, ultrathin pad pasting LED display module according to claim 5 is characterized in that said led drive circuit plate, cutting plate and light-transmissive film can be hard material or soft material.

7, ultrathin pad pasting LED display module according to claim 6 is characterized in that said led drive circuit plate and cutting plate are by transparent material or non-transparent material making.

8,, it is characterized in that said light-transmissive film and/or cutting plate can be divided into less, difform light-transmissive film and/or cutting plate according to one of them described ultrathin pad pasting LED display module of claim 1-7.