KR101631712B1 - Lighting module with led - Google Patents

Abstract

The present invention provides an LED lighting module that reliably emits light of a predetermined wavelength. According to an embodiment of the present invention, an LED light source; And a pixel array disposed on the LED light source for selectively emitting light emitted from the LED light source to change a spectrum of light emitted from the LED light source, wherein the LED light source and the light output from the pixel array And the LED lighting module is output to the outside.

LED light source, LED lighting module, switch, pixel, POS.

Description

LED lighting module {LIGHTING MODULE WITH LED}

The present invention relates to an LED (Light Emitting Diode) module, and more particularly to an LED lighting module.

An LED device is a diode having a PN junction structure fabricated using a semiconductor manufacturing process. When an electron and a hole are combined in a PN junction, extra energy is emitted as light. The wavelength of the light output from the LED element varies depending on the kind of the material constituting the LED element and the impurity added in the manufacturing process. For example, a red light with a wavelength of 700 nm is emitted from the LED element by the zinc and oxygen atoms, and a green light with a wavelength of 550 nm is emitted from the LED element by the nitrogen atom.

The LED device is smaller than the conventional light source, has a long life, is efficient, and has a high-speed response characteristic. Because of these advantages, LED devices have recently been used as backlight light sources for flat panel display devices having liquid crystal display devices. A flat panel display device using an LED device as a backlight source is more advantageous in terms of color reproducibility and lifetime than the case of using a conventional fluorescent lamp as a backlight source.

In recent years, LED devices have begun to be applied in the light source field, which is not used due to the limitation of brightness, as the luminous efficiency of LED devices increases. LED devices are emerging as new growth technologies that change the lighting infrastructure. LED lighting has a higher electricity saving effect than incandescent lamps, and is environmentally friendly because mercury is not used compared to fluorescent lamps.

The present invention provides an LED lighting module capable of emitting light of a predetermined wavelength.

According to an embodiment of the present invention, an LED light source; And a pixel array disposed on the LED light source for selectively emitting light emitted from the LED light source to change a spectrum of light emitted from the LED light source, wherein the LED light source and the light output from the pixel array And the LED lighting module is output to the outside.

According to another embodiment of the present invention, there is provided a light guiding plate comprising: a light guiding layer for passing light therethrough; An LED light source disposed on one side of the light guide layer; And a switching reflector for changing a spectrum of light emitted from the LED light source and reflecting the light through the light guide layer.

According to another embodiment of the present invention, there is also provided an LED light source; And a switch having a position variable mirror, a wavelength change film for changing a spectrum of light emitted from the LED light source, and a position variable mirror for selectively shielding the wavelength change film.

Also, an LED light source according to another embodiment of the present invention; And a wavelength controller for receiving the light emitted from the LED light source and outputting the changed wavelength by changing the wavelength so that light of a predetermined wavelength can be emitted to the outside regardless of the rank of the LED light source, .

The LED lighting module that emits light with the predetermined characteristics by the present invention can be easily made. Since the spectrum of the light output from the LED light source can be changed by using the switch and the pixel array proposed in the present invention, even if the characteristics of the LED light source are changed due to the manufacturing problem, In particular, it is possible to manufacture an LED lighting module which can reliably emit light having a predetermined wavelength even if LED light sources manufactured for light of a specific wavelength are classified into different ranks.

Also, by using the switch and the pixel array of the present invention, it is possible to easily manufacture an LED lighting module having a spectral wavelength that is difficult to implement in a general LED device manufacturing process.

In addition, since the spectral characteristics of light output from the LED light source can be changed by using the various types of switching reflectors of the present invention, even if the LED light sources manufactured in the same manufacturing process are classified into different ranks, An LED lighting module with an LED light source can cause light of a predetermined wavelength to be emitted.

In addition, an LED lighting module having spectral characteristics that are difficult to implement as an LED light source can be implemented using various types of switching reflectors proposed in the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, in order to facilitate a person skilled in the art to easily carry out the technical idea of the present invention. do.

1 is a block diagram of an LED lighting module according to a preferred embodiment of the present invention.

1, the LED lighting module includes an LED light source 10, a pixel array 20, a switch portion 30, and a switch driving portion 40. As shown in Fig. Here, the LED light source 10 may include all LED elements of various types.

The pixel array 20 has a structure in which pixels and pixels are separated while containing materials capable of absorbing and releasing light emitted from the LED light source. The light remaining unabsorbed in the pixel array 20 is output to the outside. The light absorbed by the pixel array 20 and the light emitted again differs in the spectrum so that light emitted from the LED light source 10 is emitted to the outside of the LED lighting module . Each unit pixel constituting the pixel array 20 is filled with a substance capable of changing the wavelength of the incident light. As shown in FIG. 1, each pixel of the pixel array 20 may be filled with different phosphors 21, 22 and 23, or may be filled with the same material. Is to fill each pixel of the pixel array with the necessary material so that the LED lighting module 10 can finally have the predetermined characteristics.

The switch unit 30 has an ON / OFF function for controlling the light emitted from the LED light source 10 to be incident on the LED light source 10 and output to the outside. The meaning of "on" means that light emitted from the light source device is incident on the light conversion pixel array, and "off" means that light emitted from the light source device is not incident on the light conversion pixel array. The switch unit 30 has a plurality of unit switches corresponding one to one to each pixel in the pixel array 20. [ In some cases, the unit switch may be disposed only in a selected portion of the pixel array 20, rather than all of the pixels in the pixel array. The switch control unit 40 is for controlling ON / OFF of each switch disposed in the switch unit 30 and includes a number of unit switch control units corresponding to the number of switches arranged in the switch unit 30. [

2 is a view showing the operation of the LED lighting module shown in FIG.

2, the light emitted from the LED light source 10 is selectively incident on the pixel array 20 by the respective switches of the switch unit 30. As shown in FIG. In addition, each switch may be fully on, partially on, and partially transmitting light output from the LED light source 10. In Figure 2, the first switch is off, the second and third switches are on, the fourth and fifth switches are off, and the sixth switch is partially on. As shown in Fig. The switch control unit 20 receives the drive signal and controls the ON and OFF states of the switches included in the switch unit 30. [

FIG. 3 shows one of the pixel arrays shown in FIG. 1 and its corresponding switch and switch control section.

The switch control section 41 may be attached to one side of the switch 31, as shown in Fig. It may be attached to the opposite side or attached to the side surface of the switch 31 in some cases. The pixel 21 generates a spectrum change in the process of transmitting the light incident from the LED light source 10.

FIGS. 4 and 5 are diagrams illustrating light output from a light source when each switch of the switch unit is selectively turned on, as shown in FIG.

FIG. 4 shows the state of the switch portion shown in FIG. 3, in which the first switch is off, the second and third switches are on, the fourth and fifth switches are off, The light output from the LED light source 10 is output to the outside through the pixels having the second, third, and sixth switches. The sixth switch outputs only a portion of the light that is partially turned on.

FIG. 5 shows the case where the first switch to the sixth switch are all turned on, and in particular, the second switch and the sixth switch partially remain on.

By constituting each pixel constituting the pixel array with a material having a predetermined characteristic and selectively turning on the switch corresponding to each pixel (including maintaining the partially on state) or turning off the switch, finally, The light can maintain the desired characteristics. The LED lighting module according to the present embodiment is a combination of the LED light source 10 and the light output from the pixel array 40 and is output to the outside.

The sum of the lights output from the pixels constituting the pixel array 40 determines the color. For example, if the color temperature is set to the same color temperature as that of the black body radiation (6500K), the materials of each pixel are selected according to the selected color temperature to form a photo-conversion pixel array, and each switch of the switch unit is controlled according to the characteristics of the LED light source .

The biggest difficulty in fabricating an LED light source is that it can vary slightly even if the same manufacturing process is maintained. It is disadvantageous in that dispersion of spectral energy characteristic and luminance characteristic is very large even in a high-brightness LED of the same color. The red LED light source has a deviation of about 629 [nm] to 641 [nm] from the peak wavelength, and the green LED light source has the range of 514 [nm] to 529 [nm] , And blue LED light sources may have scattering from 452 [nm] to 461 [nm]. The luminance is also in the range of 1161 [lm] to 1639 [lm] for the red LED light source, 2732 [lm] to 4098 [lm] for the green LED light source and 478 [lm] to 819 [lm] for the blue LED light source.

Therefore, there are many variations from the production of the LED light source. If the LED light source having the desired wavelength characteristics is selected to produce the illumination, the yield is very low and the manufacturing cost of the LED is increased. Even with the same red LED light source, they are grouped into groups called ranks or beans by wavelength characteristics. Table 1 shows an example of rank classification of red, green, and blue LED light sources, respectively.

Red: 629 nm to 641 nm 629 to 630 631 to 632 633 to 634 635 to 636 637-639 640 to 641 Rank1 Rank2 Rank3 Rank4 Rank5 Rank6 Green: 514 nm to 529 nm 514-515 516-517 518-519 520 ~ 522 523-524 525-527 528-529 Rank1 Rank2 Rank3 Rank4 Rank5 Rank6 Rank7 Blue: 452 nm to 461 nm 452-543 454 to 455 456 to 457 458 to 459 460 to 461 Rank1 Rank2 Rank3 Rank4 Rank5

The LED lighting module according to the present embodiment appropriately controls the switch portion provided in the pixel array so that the LED light source 10 can be classified into any rank even if the LED light source manufactured for the light of a specific wavelength is classified into different ranks as described above The light of a predetermined wavelength can be emitted to the outside of the LED lighting module irrespective of being classified. Therefore, by using the LED lighting module according to the present embodiment, it is possible to manufacture an LED lighting that can reliably emit light having a certain wavelength regardless of the rank of the LED light source.

6 is a plan view of the LED lighting module according to the present embodiment.

As shown in Fig. 6, each switch of the switch unit is disposed in each pixel of the pixel array, and a unit switch control unit for controlling each switch is disposed on one side of the area where each switch is disposed. Although the pixel array is arranged in the form of a 6 * 6 matrix, it can be arranged in various forms according to the application. For example, a pixel array can be implemented in the form of a 2 * 2 or 10 * 10 matrix. Also, unlike FIG. 6, it may be implemented in a rectangular shape in the form of N * M (M and N are natural numbers), or may be implemented in a line form so as to replace a conventional fluorescent lamp and its related illumination.

7 is a block diagram showing an LED lighting module according to a second preferred embodiment of the present invention.

7, the LED lighting module according to the present embodiment is characterized in that the light emitted from the LED light source 10 is reflected by the switch unit 30 and the reflective sheet 50 to be recycled. Particularly, when each switch of the switch unit 30 is off, it reflects the light emitted from the LED lighting module. At this time, the reflected light is reflected by the reflective sheet 50, and is transmitted to the pixel array and is output to the outside. Therefore, in this case, since the reflected light is used, the light efficiency of the LED lighting module can be effectively increased.

8 is a block diagram showing an LED lighting module according to a third embodiment of the present invention.

Referring to FIG. 8, the LED lighting module according to the third embodiment is of a side type and a direct type. The side surface type LED light source 11 is located on the side surface and a plurality of switching reflectors 41, 42, 43, .. implemented as a phosphor are arranged at the lower end of the light guide layer 60. As shown in the lower portion of the side-view LED lighting module, light output from the LED light source 11 is guided to the switching reflectors 41, 42, 43, .. located at the lower end of the light guide layer. Each of the phosphors constituting each switching reflector absorbs ultraviolet light or visible light emitted from the LED element and outputs light. Therefore, in the LED lighting module according to the present embodiment, the resultant light of the light output from the LED light source 11 and the light of each phosphors constituting the switching reflector becomes final light.

Here, each of the switching reflectors 41, 42, 43,... May be constituted by phosphors having different emission wavelengths, or may be constituted by the same phosphors. It may also be implemented using a material other than a phospho. The phosphors constituting each switching reflector are determined according to the characteristics of the LED lighting module. Here, the LED light source 11 may include all LED elements of various types. What is called a switching reflector is named because it selectively reflects light emitted from an LED light source.

In the direct type LED lighting module, the LED light source 12 is disposed at the lower end, a transparent layer 70 is disposed on the LED light source 12, and a switching reflector 44 implemented as a phosphor is disposed on the LED light source 12. The switching reflector 44 is composed of a plurality of unit reflectors and is arranged according to the characteristics of the LED lighting module. The transparent layer 70 may be implemented using air, plastic, or glass. The plastic may be implemented using a PMMA (poly methyl methacrylate) film, or a PC (poly carbonate) film. As shown in the lower part of the direct-type LED lighting module, light output from the LED light source 12 passes through the transparent layer 70 and passes through the switch 44 composed of a phosphor and is output to the outside. The switching reflector 44 absorbs ultraviolet light or visible light emitted from the LED light source and emits light. The direct-type LED lighting module is finally combined with the light emitted from the LED light source and the light passing through the switch 44, and finally, is outputted to the outside.

FIG. 9 shows a first embodiment of a switching reflector of a side-view LED lighting module according to the present invention.

As shown in <c> of FIG. 9, the switching reflector of the side-view LED lighting module is composed of two glass pieces 41a in the form of a phosphor material powder and a reflection material powder do. As shown in < d > in Fig. 9, the arrangement of the antireflection material and the fluorescent material is adjusted depending on the degree of application of voltage to both glasses 41a. The light output from the LED light source is incident on the phosphor material powder of the switching reflector to change the wavelength, and a part of the changed light is output to the outside. Here, the antireflective material powder may include phosphores, and may be implemented with other materials.

<E> to <g> of FIG. 9 show a case where light emitted from the LED light source is reflected or partially absorbed by changing the arrangement of materials in the switching reflector 41 when different voltages are applied. In FIG. 9, e <e> shows a case where a reflective material powder is disposed on the glass at the top of the switch according to the level of the first voltage V1 so that light output from the LED light source 11 is completely reflected. 9, due to the second voltage V2, the phosphor material powder is disposed in the glass on the top of the switching reflector 41, and the light emitted from the LED light source 11 is absorbed by the phosphor material , Some of the absorbed light is re-emitted. 9 shows a state in which the phosphor material muffler is partially disposed at the upper end of the switch due to the third voltage V3 and partly the anti-use material powder is disposed. In this case, some of the light incident by the reflective material powder is reflected, absorbed by the fluorescent material powder, and part of the absorbed light is emitted again.

In this way, by controlling the composition ratio of the light-emitting material and the fluorescent material in the switch 41 and applying the voltage appropriately, the degree of reflection and absorption of light output from the LED light source 11 can be determined. Therefore, since the light finally output from the LED lighting module is combined with the light output from the LED light source and the light reflected from the switching reflector 41 and outputted to the outside, the number and arrangement state of the switching reflector 41, And by applying an appropriate voltage, the LED lighting module can have the desired characteristics. In particular, even if the LED light sources fabricated for light of a specific wavelength are classified into different ranks, if the switching reflector 41 is controlled in accordance with the characteristics that are different from each other, the LED light source can reliably emit light having a predetermined wavelength The module can be manufactured.

Fig. 10 shows a second embodiment of the switching reflector of the side-view LED lighting module proposed in the present invention.

10, the switching reflector 90 of the side-view LED lighting module according to the present embodiment includes a support 91, a phosphor film 92, positionable mirrors 93a and 93b, a light-transmitting layer 94 And a reflection-type upper mirror 95. The position-variable mirrors 93a and 93b are implemented by a mechanical shutter, and selectively cover the phosphor film 92. [ The light-transmitting layer 94 is a light-transmittable layer such as glass or air. The switching reflector 99 of the LED lighting module according to the present embodiment is an upper mirror LED light reflection type having a reflection type upper mirror 95 on the upper side.

&Lt; e > to < g > in FIG. 10 show the operation of the upper mirror LED light reflection type. 10, the light incident on the phosphor film 92 from the LED light source 11 is absorbed by the certain portion of the phosphor film 92, Some are emitted again. The light incident on the reflection type upper mirror 95 from the LED light source 11 is reflected. 10, the light incident on the phosphor film 92 from the LED light source 11 is partially absorbed by the phosphor film 92 in a state where the position variable mirror 93a is partly turned off. At this time, an amount different from < e > in Fig. 10 is absorbed, and a portion of the absorbed amount is again emitted. If the position variable mirror 93a is closed as shown in < g > of FIG. 10, that is, the phosphor film 92 is completely covered, the light incident from the LED light source is simply reflected. The switching reflector 90 changes the spectrum of the light emitted from the LED light source 11 according to the state of the position variable mirror 93a and outputs the light thus changing the output of the LED lighting module with the switching reflector 90. [ The state of the light can be adjusted to a desired shape.

In addition, the switch 90 of the LED lighting module according to the present embodiment may include a phosphor film 96 instead of the reflection type upper mirror 95, which is referred to as an upper mirror phosphor type. Since the upper mirror phosphor type has the phosphor film 96 on the upper side, it always absorbs a part of the light emitted to the LED light source and emits the absorbed part back to the outside. The remaining operations perform the same operation as the upper mirror LED light reflection type shown in <e> to <g> of FIG. Here, the material of the film that reflects light to the switching reflector structure can be formed by using a metal-based film and a plastic-based film. In case of metal, aluminum or silver may be used. In case of plastic, MCPET film (polyethylene terephthalate) or polisher film may be used. In addition, the switching reflector shown in Fig. 11 can be applied to a direct-type LED lighting module.

As described above, by implementing the switch 11 of the side-view LED lighting module, the characteristics of light output from the LED light source can be variously controlled. In particular, even if the characteristics of the manufactured LED light source 11 are changed, an LED lighting module that emits light with predetermined characteristics by adjusting the operating characteristics of the switching reflector shown in this embodiment can be easily made. In particular, even if LED light sources manufactured for light of a specific wavelength are classified into different ranks, an LED lighting module capable of reliably emitting light having a predetermined wavelength can be manufactured by controlling the switching reflector can do.

In addition, an LED lighting module having spectral characteristics that are difficult to realize as the LED light source 11 can be easily implemented using the switching reflector shown in this embodiment.

Fig. 11 shows an embodiment of a switch relating to a direct-type LED lighting module proposed in the present invention.

As shown in Fig. 11, the switch 100 relating to the direct-type LED lighting module has a reflective screen type and a transmissive screen type. The reflective screen type includes a position variable mirror 110, a transparent substrate 120, a reflection screen 130A, a transparent substrate 140, and a phosphor film 150. [ Here, the reflection screen 130A reflects the incident light without transmitting it. The transmissive screen type has the same structure as the reflective screen type, but uses the transmissive screen 130B in place of the reflective screen 130A. The transmissive screen 130B of FIG. 11 transmits light at a predetermined rate, and the reflective screen 130A reflects light. Here, since the LED light source 12 is a planar light source, light is emitted from all areas of the plane, and a part thereof is shown. Here, the role of the phosphor film 150 is to change the spectrum of the light emitted from the LED light source 12 to emit the light to the outside.

When the position-variable mirror 110 of the switching reflector 100 is opened as in <e> of FIG. 11, the light incident from the LED light source 12 is incident on the phosphor film 150, And is output to the outside. When the position-variable mirror 110 is partially opened as shown in <f> of FIG. 11, the light from the LED light source 12 is partially blocked, and the position variable mirror 110 is opened Light is incident. When the positionable mirror 110 is closed as shown in <g> of FIG. 11, the light provided by the LED light source 12 is blocked.

When the positionable mirror 150 is turned off as shown in <h> of FIG. 11, the light incident from the LED light source 12 is incident on the phosphor film 150, the spectrum is partially converted, and then output to the outside . When the position-variable mirror 110 is partially opened as shown in FIG. 11, the light from the LED light source 12 is partially blocked, and the position variable mirror 110 is opened through the open region of the POSO film 150 . The transmissive screen 130B also externally outputs the light output from the LED light source 12 to the outside. (See X) When the position-variable mirror 110 is closed as shown in FIG. 11, 1 @ is output to the outside through the transmissive screen 130B. Here, the material of the light reflecting film used for the structure of the switching reflector can be formed by using a metal and plastic film. In case of metal, aluminum or silver may be used. In case of plastic, MCPET film (polyethylene terephthalate) or polisher film may be used.

As described above, by constructing the LED lighting module according to the embodiment shown in FIG. 11, it is possible to easily manufacture a direct-type LED lighting module capable of emitting various types of light. In particular, even if the characteristics of the manufactured LED light source 12 change, it is possible to easily make an LED lighting module that emits light of a predetermined characteristic by adjusting the operating characteristics of the switching reflector shown in this embodiment. The LED lighting module 12 having spectral characteristics that are difficult to implement as the light source 12 can be easily implemented using the switching reflector shown in this embodiment.

12 is a graph showing a spectrum of light output from an LED light source and a fluorescence spectrum of three phosphors (phosphor A, phosphor B, and phosphor C) materials. FIG. 13 is a schematic diagram of a switching reflector according to an embodiment of the present invention using the three phospho materials and the LED light source shown in FIG. 12, and shows the wavelength distribution of light output at the time of adjusting the switching reflector, It is a simulation graph for color coordinates.

On the right side of FIG. 13, a spectrum of light output from the LED lighting module is shown in various fashion using three phospho materials and LED light sources, and on the left side, there is shown a simulation graph of color temperature and color coordinates. 12 and 13, it can be seen that the light output spectrum can be tuned when the switching reflector described in the above embodiment is implemented by using the LED light source and the three phospho materials. That is, the LED lighting module having a desired color index can be easily manufactured by adjusting the spectrum of light emitted from the LED light source and the phosphorus (phosphor B, phosphor B) material.

14 is a photograph showing light output from various LED lighting modules implemented according to an embodiment of the present invention. According to various embodiments as described above, an LED lighting module having various light characteristics as shown in FIG. 14 can be easily implemented.

As described so far, the pixel array or the switching reflector described in the above embodiments are arranged such that all the LED light sources in the LED light module are classified into a certain rank, And a wavelength controller for receiving the light emitted from the light source and outputting the changed wavelength.

LED lighting modules are expected to be the next generation of lighting, but there are technical barriers to overcome. Among them, the performance of LED light source is a representative one. Even if it is manufactured by white LED light source or color LED light source, its characteristics are different, and mass production is not easy. In addition, in the case of a color LED light source, it is very difficult to adjust the color of the LED light source. In the case of a white LED light source, the color rendering index is generally low, so the quality of the light source is low and color adjustment is not easy.

The present invention solves the problem of such an LED light source through a pixel array or a switching reflector. Accordingly, it is possible to easily manufacture an LED lighting module capable of minimizing the performance deviation of the LED light source, increasing the mass productivity, realizing accurate white color, and varying the color correlated temperature (CCT). Also, an LED lighting module having a high CRI can be easily manufactured. Further, according to the present invention, it is easy to produce an active color-changing illumination capable of adjusting the spectrum distribution. When the spectrum distribution can be adjusted, it is possible to easily manufacture a light having a complex function rather than a simple function. In addition, it is possible to easily manufacture CCT, which is an index representing white light, or illumination capable of expressing various colors. The LED lighting module proposed by the present invention can be used as signal lighting, emotion-satisfaction lighting, and the like in various places.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be taken by way of limitation, I will understand. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be determined by the scope of the appended claims, as well as the appended claims.

1 is a block diagram of an LED lighting module according to a preferred embodiment of the present invention;

Fig. 2 is a view showing the operation of the LED lighting module shown in Fig. 1. Fig.

FIG. 3 shows one pixel and its corresponding switch and switch control in the pixel array shown in FIG. 1; FIG.

FIGS. 4 and 5 are diagrams illustrating light output from a light source when each switch of the switch unit is selectively turned on, as shown in FIG.

6 is a plan view of the LED lighting module according to the present embodiment.

FIG. 7 is a block diagram showing an LED lighting module according to a second preferred embodiment of the present invention. FIG.

8 is a block diagram showing an LED lighting module according to a third embodiment of the present invention;

FIG. 9 is a block diagram showing a first embodiment of a switching reflector of a side-view LED lighting module according to the present invention. FIG.

10 is a block diagram illustrating a second embodiment of a switching reflector of a side-view LED lighting module according to the present invention.

FIG. 11 is a block diagram illustrating an embodiment of a switching reflector according to the present invention; FIG.

12 is a graph showing a spectrum of light output from an LED light source and a fluorescence spectrum of three phospho materials.

13 is a simulation graph of the LED lighting module of the present invention constructed using the three phospho materials and the LED light source shown in Fig.

Figure 14 is a photograph of light output from various LED lighting modules implemented in accordance with an embodiment of the present invention.

Description of the Related Art [0002]

10: LED light source 20: pixel array

30: Switch part 40: Switch control part

Claims (25)

delete delete delete delete delete delete A light guide layer for passing light therethrough; An LED light source disposed on one side of the light guide layer; And And a switching reflector for changing a spectrum of light emitted from the LED light source and reflecting the light through the light guide layer, The switching reflector A phosphor material powder disposed between the two plates, and a reversible material powder. delete 8. The method of claim 7, The switching reflector Wherein the spectrum changing characteristic of the switching reflector is changed by applying a predetermined voltage to the two plates to relocate the fluorescent material powder between the plates and the anti-substituting material powder. A light guide layer for passing light therethrough; An LED light source disposed on one side of the light guide layer; And And a switching reflector for changing a spectrum of light emitted from the LED light source and reflecting the light through the light guide layer, The switching reflector Phosphor membrane; A position variable mirror for selectively shielding the phosphor film; A light-transmitting layer disposed on the position-variable mirror; And And a reflection type upper mirror disposed on the light transmission layer. A light guide layer for passing light therethrough; An LED light source disposed on one side of the light guide layer; And And a switching reflector for changing a spectrum of light emitted from the LED light source and reflecting the light through the light guide layer, The switching reflector A first phosphor film; A position variable mirror for selectively shielding the first phosphor film; A light-transmitting layer disposed on the position-variable mirror; And And a second phosphor film disposed on the light transmitting layer. 8. The method of claim 7, Wherein the switching reflector is controlled such that light of a predetermined wavelength is emitted to the outside of the LED lighting module regardless of the rank of the LED light source. LED light source; And A wavelength variable film for changing a spectrum of light emitted from the LED light source, and a position variable mirror for selectively shielding the wavelength change film, LED lighting module. 14. The method of claim 13, The switching reflector A first transparent substrate; A variable mirror disposed on the first transparent substrate and selectively shielding the wavelength change film; A second transparent substrate disposed on the position-variable mirror; And And the wavelength changing film disposed on the second transparent substrate. 15. The method of claim 14, Wherein the wavelength converting film comprises a phosphor film. 15. The method of claim 14, The switching reflector Further comprising a reflective screen membrane disposed in alignment with the position variable mirror so as not to cover the wavelength variable film and reflecting the light emitted from the LED light source. 15. The method of claim 14, The switching reflector Further comprising a transmissive screen membrane disposed at a position where the position-variable mirror does not cover the wavelength-changing film and transmitting the light emitted from the LED light source at a predetermined ratio. 14. The method of claim 13, Wherein the switching reflector is controlled such that light of a predetermined wavelength is emitted to the outside of the LED lighting module regardless of the rank of the LED light source. LED light source; And And a wavelength controller for receiving the light emitted from the LED light source and outputting the changed wavelength by changing the wavelength so that light of a predetermined wavelength can be emitted to the outside regardless of the rank of the LED light source, The wavelength- A phosphor material powder disposed between the two plates, and a reversible material powder. 20. The method of claim 19, The wavelength- At least one pixel; And And at least one switch disposed corresponding to the pixel so that light emitted from the LED light source can be selectively transmitted to a corresponding pixel. 20. The method of claim 19, The wavelength- Wherein the LED light source is disposed on one side of the LED light source and reflects light emitted from the LED light source. delete LED light source; And And a wavelength controller for receiving the light emitted from the LED light source and outputting the changed wavelength by changing the wavelength so that light of a predetermined wavelength can be emitted to the outside regardless of the rank of the LED light source, The wavelength- Phosphor membrane; A position variable mirror for selectively shielding the phosphor film; A light-transmitting layer disposed on the position-variable mirror; And And a reflection type upper mirror disposed on the light transmission layer. LED light source; And And a wavelength controller for receiving the light emitted from the LED light source and outputting the changed wavelength by changing the wavelength so that light of a predetermined wavelength can be emitted to the outside regardless of the rank of the LED light source, The wavelength- A first phosphor film; A position variable mirror for selectively shielding the first phosphor film; A light-transmitting layer disposed on the position-variable mirror; And And a second phosphor film disposed on the light transmitting layer. LED light source; And And a wavelength controller for receiving the light emitted from the LED light source and outputting the changed wavelength by changing the wavelength so that light of a predetermined wavelength can be emitted to the outside regardless of the rank of the LED light source, The wavelength- A wavelength change film for changing a wavelength of light emitted from the LED light source; and a position variable mirror for selectively shielding the wavelength change film.

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