TWI643327B - Photoluminescent led display device and method for manufacturing the same - Google Patents

Abstract

The present invention provides a photoluminescent LED display device and a manufacturing method thereof. The display device includes a light emitting diode array and a display panel disposed on one side of the light emitting diode array, and the display panel includes a transparent substrate and a display panel. Photoluminescent layer structure. The light-transmitting substrate supports the photoluminescent layer structure and includes an adjacent red light-transmitting region, a green light-transmitting region and a blue light-transmitting region; the photoluminescent layer structure comprises a red photoluminescent layer and a green layer A photoluminescent layer, wherein the red photoluminescent layer is disposed on the green photoluminescent layer. Thereby, the vertically stacked photoluminescent layer is disposed, and the photoluminescent layer structure can eliminate the need for precise pixel alignment to make the display device easier to manufacture, and the display device also has better light energy utilization ratio and larger display viewing angle.

Description

Photoluminescence LED display device and method of manufacturing same

The present invention relates to a display device and a method of fabricating the same, and more particularly to a photoluminescence LED display device and a method of fabricating the same.

The conventional liquid crystal display device comprises a backlight module and a liquid crystal panel, wherein the liquid crystal panel comprises a thin film transistor control circuit layer, a liquid crystal layer, a polarizing plate and a color filter, and the backlight module can generate A white light is applied to the liquid crystal panel, and then white light passes through the liquid crystal layer controlled by the thin film transistor to reach the color filter. As shown in FIG. 1, the color filter 90 includes a red pixel region 91, a green pixel region 92, and a blue pixel region 93, which respectively allow a light spectrum R having a red spectrum in the white light spectrum, a light G having a green spectrum, and having The blue spectrum of light B passes. Taking the red pixel region 91 as an example, only the light spectrum R having the red spectrum passing through the red pixel region 91 in the white light spectrum, and the remaining spectral rays G and B will be blocked and absorbed by the red pixel region 91; the green pixel region 92 And the blue pixel area 93 also has similar characteristics. Therefore, when the white light reaches the color filter 90, most of the spectrum (about two-thirds) cannot be lost through the color filter 90.

It can be seen that the conventional liquid crystal display device uses only a small amount of white light energy provided by the backlight module when forming an image, and usually only 4% to 10% of white light energy can be output to the liquid crystal display device, so the light Energy use is inefficient.

On the other hand, the conventional liquid crystal display device is limited by the mechanism in which the liquid crystal layer switches light, and usually has a problem that the viewing angle is too small. To this end, the business community has proposed various improvement programs. For example, Japan's Hitachi has proposed IPS (In-Plane Switching) technology, which uses horizontal electrodes to cause planar rotation of liquid crystal molecules to increase the viewing angle; Fujitsu and Samsung (Samsung) MVA (Multi-Domain Vertical Alignment) and PVA (Pattern Vertical Alignment) techniques are respectively proposed to cut a single pixel into a multi-Domain to increase the viewing angle. All of the above techniques can improve the problem of too small a viewing angle, but they also face corresponding problems such as complicated process, low yield, high production cost, or low light transmittance. In addition, although Fujitsu's Wide Viewing Film technology has a lower production cost, its effect of improving the viewing angle is relatively low. Therefore, the conventional liquid crystal display device wide viewing angle technology still does not have a satisfactory solution.

In order to improve the above-mentioned problems of low light energy use efficiency and small viewing angle, some technical schemes of fluorescent material display devices excited by a blue backlight source have been proposed. For example, in the display device disclosed in US Pat. No. 8,670,089 or US Pat. No. 8,947,619, the backlight module provides a blue light which, after passing through a liquid crystal layer, excites a photoluminescent layer, the photoluminescent layer comprising side by side (side by side) arranged red fluorescent material pixel area, green fluorescent material pixel area and blue pixel area, blue pixel area usually does not contain fluorescent material; when blue light passes through red fluorescent material pixel area, it can be converted into The red light can be converted into green light when passing through the green fluorescent material pixel area, and the blue light can be directly displayed when passing through the blue pixel area. Thereby, the display device can generate red, green and blue light pixels without filtering the wavelength through the color filter, thereby reducing the loss of light energy, thereby greatly increasing the brightness of the color image without increasing the power consumption. In addition, the scattering phenomenon of light generated by the blue light passing through the fluorescent material can also improve the viewing angle of the conventional liquid crystal display device. Too small a problem.

In addition, there are also technical solutions for adopting a light-emitting diode array with a wavelength conversion layer. For example, in the display device disclosed in US Pat. No. 9,111,464, each of the light emitting diodes is covered with a wavelength conversion layer or a light dispersion layer, so that the blue light emitted by the light emitting diode passes through the wavelength conversion layer. It can be converted into red or green light, and the blue light remains blue after passing through the light dispersion layer, or the light emitting diode emits ultraviolet light, and the ultraviolet light can be converted into red light, green light or blue light after passing through the wavelength conversion layer. This forms a color image. The wavelength conversion layer also covers the light emitting diodes in a side by side arrangement.

However, in the mobile display device, the pixels are all of a small size. For example, in the case of a smart phone, the length and width of each pixel are 57 μm and the width of the full HD (High Definition) display device. 19 micrometers, these red and green fluorescent materials, which are small in size and arranged side by side, require relatively high alignment accuracy in manufacturing, so they are quite difficult to manufacture; for example, green fluorescent materials may be poorly aligned ( Misalignment) covers a portion of the red fluorescent material and partially accumulates thereon, making the process difficult to control and resulting in uneven thickness of the fluorescent material.

On the other hand, since the red fluorescent material and the green fluorescent material generally have different light conversion efficiencies, the thickness of the red fluorescent material required for the photoluminescent layer and the thickness of the green fluorescent material are also different; The phosphor material of each pixel region has good thickness uniformity and is quite difficult to control in manufacturing. Therefore, problems such as poor alignment, different thickness requirements, and difficulty in thickness control have greatly increased the difficulty of mass-producing red and green fluorescent materials arranged side by side.

In summary, the display device disclosed in the previous case still has various defects and needs to be improved to be improved.

An object of the present invention is to provide a photoluminescence LED display device and a manufacturing method thereof, which can make a photoluminescence LED display device easier to manufacture without precise pixel alignment, and can also have a photoluminescence LED display device Preferred light energy use efficiency and/or large viewing angle photoluminescence LED display device.

In order to achieve the above object, according to an embodiment of the photoluminescent LED display device of the present invention, the photoluminescent LED display device may include: an array of light emitting diodes for providing a blue light and a dark blue a light or an ultraviolet light; and a display panel disposed on one side of the light emitting diode array, the display panel comprising a light transmissive substrate and a photoluminescent layer structure for supporting the photoluminescence The light-transmissive substrate includes an adjacent red light-transmissive region, a green light-transmitting region, and a blue light-transmitting region, and the photoluminescent layer structure is disposed on the light-emitting diode array. On the optical substrate, the photoluminescent layer structure includes a first light emitting portion, and the first light emitting portion covers the red light penetrating region and the green light penetrating along a normal direction of the light transmitting substrate. Area.

In order to achieve the above object, in accordance with an embodiment of the photoluminescent LED display device of the present invention, the method of fabricating the photoluminescent LED display device may include: providing one side of a light emitting diode array; and forming a display The display panel is disposed on one side of the LED array or directly on one side of the photodiode array; wherein the LED array is configured to provide a blue light, a deep blue light or an ultraviolet light The forming of the display panel includes: providing a transparent substrate and forming a photoluminescent layer structure; the transparent substrate is configured to support the photoluminescent layer structure and includes an adjacent red light penetrating region a green light penetrating region and a blue light penetrating region; the photoluminescent layer structure includes a first light emitting portion along the light emitting substrate The normal light direction covers the red light penetration region and the green light penetration region at the same time.

In addition, according to an embodiment of the photoluminescent LED display device of the present invention, the display panel may further comprise a filter layer structure, wherein the filter layer structure comprises an adjacent red region, a green region and a blue region. The red zone is configured to allow passage of a red light, the green zone being configured to allow passage of a green light, and the blue zone being configured to allow passage of a blue light; the photoluminescent layer structure facing the array of light emitting diodes And disposed on the filter layer structure, and the red region, the green region, and the blue region of the filter layer respectively cover the red light penetrating region, the green light penetrating region, and the blue light penetrating region.

Therefore, the photoluminescence LED display device and the manufacturing method thereof provided by the present invention at least provide the following beneficial technical effects: the first (green) photoluminescence layer of the photoluminescent layer structure covers at least the red light transmission of the transparent substrate The transparent region and the green light penetrating region, or the red region and the green region covering the filter layer structure, the green photoluminescent layer can have a larger pixel size and thus is easier to manufacture. In addition, another (red) photoluminescent layer is disposed on the green photoluminescent layer, which is disposed on the upper and lower layers instead of being arranged side by side, thereby increasing the alignment tolerance, so that the red photoluminescent layer is also easier to manufacture. At the same time, there is no need for precise alignment between the two photoluminescent layers, which avoids the thickness unevenness caused by misalignment and the difficulty in controlling the process. For these reasons, the photoluminescent layer structure can be made relatively easy to manufacture, thereby increasing the production yield.

Furthermore, in the display device disclosed in the present invention, the photoluminescent structure has a red photoluminescent layer disposed on the green photoluminescent layer, which has good light energy use efficiency in addition to making the manufacturing easier. The reason is that when the blue light (dark blue light or ultraviolet light) provided by the LED array passes through the red filter region, it will pass through the red photoluminescent layer to make most of the blue light. (for example close to 100%) is converted into red light, The red light then passes through the green photoluminescent layer. Since the red light has a lower energy level and does not excite the green photoluminescent material and is converted into green light, it still maintains the red spectral composition, and then the red light passes through. The red filter area avoids the large absorption of light energy by the red filter region, thus providing good light energy efficiency for red light.

As described above, compared with the conventional liquid crystal display device, white light passes through the red pixel region, the green pixel region, and the blue pixel region of the color filter, and corresponding red, green, and blue pixels are generated. In the photoluminescence LED display device disclosed in the present invention, the blue light (dark blue light or ultraviolet light) provided by the LED array can correspond to the red filter region after passing through the photoluminescent layer structure. The green filter area and the blue filter area are respectively converted into red light, green light and blue light, and then the red light, the green light and the blue light can respectively pass through the red zone and the green zone of the filter layer structure. And the blue zone avoids the absorption of light energy by the filter layer structure. Therefore, most of the red light, green light, and blue light can be output to the outside of the light-emitting device through the filter layer structure. As such, the photoluminescent LED display device can have better overall light energy use efficiency, thereby increasing the brightness of the display device or reducing the amount of power consumption.

The display device of the invention can also directly omit the filter layer structure, can avoid the problem that the light is absorbed by the filter layer structure, and further improve the light energy use efficiency.

On the other hand, the photoluminescent layer structure can generate red scattered light, green scattered light and blue scattered light, and the scattered light can also exhibit or approximate a Lambertian emission pattern, so red light, green light and blue The color light can be output to the outside of the light-emitting device at a large diffusion angle; thus, the color image formed by the red light, the green light, and the blue light can have a larger display angle of view.

The above objects, technical features and advantages will be more apparent from the following description.

1-9‧‧‧Photoluminescent LED display device

R‧‧‧Red light

G‧‧‧Green light

B‧‧‧Blue light

UV‧‧‧UV light

DB‧‧‧Deep blue light

10‧‧‧Blue light source

10'‧‧‧Light Emitter Array

101‧‧‧Lighting diode

102‧‧‧Substrate structure

1021‧‧‧Substrate

1022‧‧‧Control circuit layer

1023‧‧‧electrode layer

103‧‧‧Reflective or transparent structure

11‧‧‧Backlight module

12‧‧‧LCD Module

13‧‧‧Organic LED Module

131‧‧‧Organic Luminescent Diodes

14‧‧‧Blu-ray laser scanning module

20‧‧‧ display panel

21‧‧‧Transparent substrate

21R‧‧‧Red Light Penetration Zone

21G‧‧‧Green light penetration zone

21B‧‧‧Blue light penetration zone

211‧‧‧Glossy

212‧‧‧Into the glossy surface

213‧‧‧ normal direction

22‧‧‧Filter layer structure

22PU‧‧ ‧ pixel unit

22R‧‧‧Red Zone

221‧‧‧Red filter

22G‧‧‧Green Area

222‧‧‧Green filter

22B‧‧‧Blue Zone

223‧‧‧Blue filter

224‧‧‧Lighting layer

225‧‧‧High-pass filter

2251‧‧‧First high-pass filter

2252‧‧‧Second high-pass filter

23‧‧‧Photoluminescent layer structure

231‧‧‧ first light department

2311‧‧‧First District

2312‧‧‧Second District

232‧‧‧second light department

233‧‧‧Transmission Department

234‧‧‧The third light department

2341‧‧‧First District

2342‧‧‧Second District

24‧‧‧flat layer structure

25‧‧‧Low pass filter layer structure

26‧‧‧Light reflection structure

30‧‧‧Shielding board

31‧‧‧ Opening

40‧‧‧ Sealing structure

90‧‧‧Color filters

91‧‧‧Red Pixel Area

92‧‧‧Green Pixel Area

93‧‧‧Blue pixel area

Fig. 1 is a schematic view (cross-sectional view) of a conventional color filter.

Fig. 2A is a schematic view (cross-sectional view) of a photoluminescence LED display device according to a first preferred embodiment of the present invention.

Fig. 2B is a schematic diagram showing the light conversion of blue light rays through the display panel in the photoluminescence LED display device shown in Fig. 2A.

Figure 2C is a plot of wavelength versus transmittance for a low pass filter layer structure.

3A and 3B are schematic views of a photoluminescence LED display device in accordance with a second preferred embodiment of the present invention.

3C to 3E are schematic views showing different aspects of the photoluminescence LED display device according to the second preferred embodiment of the present invention.

FIG. 3F is a schematic diagram of light conversion of ultraviolet light through the display panel in the photoluminescence LED display device shown in FIG. 3E.

Fig. 4A is a schematic view showing a photoluminescence LED display device in accordance with a third preferred embodiment of the present invention.

Fig. 4B is a view showing another aspect of the photoluminescence LED display device according to the third preferred embodiment of the present invention.

Fig. 5A is a schematic view showing a photoluminescence LED display device in accordance with a fourth preferred embodiment of the present invention.

Figure 5B is a plot of wavelength versus transmittance for a high pass filter.

FIG. 5C is a view showing another aspect of the photoluminescence LED display device according to the fourth preferred embodiment of the present invention; Schematic diagram.

Fig. 6A is a schematic view showing a photoluminescence LED display device in accordance with a fifth preferred embodiment of the present invention.

Fig. 6B is a view showing another aspect of the photoluminescence LED display device according to the fifth preferred embodiment of the present invention.

Fig. 7A is a schematic view showing a photoluminescence LED display device in accordance with a sixth preferred embodiment of the present invention.

Fig. 7B is a schematic diagram showing the light conversion of blue light rays through the display panel in the photoluminescence LED display device shown in Fig. 7A.

Fig. 7C is a view showing another aspect of the photoluminescence LED display device according to the sixth preferred embodiment of the present invention.

Figure 8 is a schematic view of a photoluminescence LED display device in accordance with a seventh preferred embodiment of the present invention.

Figure 9A is a schematic view of a photoluminescence LED display device in accordance with an eighth preferred embodiment of the present invention.

Fig. 9B is a schematic diagram showing the light conversion of blue light rays through the display panel in the photoluminescence LED display device shown in Fig. 9A.

9C and 9D are schematic views of different aspects of a photoluminescence LED display device according to an eighth preferred embodiment of the present invention.

Figure 10 is a schematic view of a photoluminescence LED display device in accordance with a ninth preferred embodiment of the present invention.

11A through 11H are schematic diagrams showing the steps of a method of fabricating a photoluminescence LED display device in accordance with a preferred embodiment of the present invention.

Figure 12 is a schematic illustration of a shield panel in accordance with a preferred embodiment of the present invention.

13A to 13C are schematic diagrams showing the steps of a method of fabricating a photoluminescence LED display device in accordance with another preferred embodiment of the present invention.

Please refer to FIG. 2A, which is a schematic diagram of a photoluminescent (PL) display device 1 according to a first preferred embodiment of the present invention. The photoluminescent LED display device 1 (hereinafter simply referred to as the PL display device 1) can provide red pixels formed by red light, green pixels formed by green light, and blue pixels formed by blue light, and displayed on a display device. Form a color image. The PL display device 1 can include a blue light source 10 and a display panel 20 disposed on one side of the blue light source 10 (eg, the light exiting side), and the display panel 20 and the blue light source 10 can be separated from each other, or Contact. The technical contents of the blue light source 10 and the display panel 20 will be further explained below.

The blue light source 10 can generate a blue light B, and the blue light B can be uniformly irradiated to a specific area of the display panel 20, that is, when the display panel 20 includes a plurality of pixels, the blue light source 10 can make the blue light B Illuminate onto a specific number of pixels. The blue light source 10 can also illuminate the entire area of the display panel 20 with the blue light B. The blue light B may have a peak wavelength of 420 nm to 480 nm.

The blue light source 10 can include a backlight module 11 and a liquid crystal module 12. The backlight module 11 can include a plurality of side-by-side blue light-emitting diodes (not shown) to form a direct-lit backlight module, or The blue light-emitting diode is combined with a light guide plate to form a one-side backlight module, so that the backlight module 11 can generate a uniform distribution of blue light B. The liquid crystal module 12 is disposed on one side (light exit side) of the backlight module 11 to receive the blue light B. The liquid crystal module 12 can include components such as a liquid crystal layer, a transparent electrode, a thin film transistor control circuit layer, and a polarizing plate. By applying electric energy to change the state of the liquid crystal, a specific portion of the blue light B can be selectively passed through the liquid crystal module. 12. In other words, the blue light B generated by the backlight module 11 can be partially displayed on the specific number of pixels of the panel 20 through the liquid crystal module 12 through the control of the thin film transistor.

The blue light source 10 can also be implemented as an array of light emitting diodes (LEDs) (not shown), which includes a plurality of side-by-side blue LEDs, which can be made to a specific blue with respect to a specific number of pixels via a control circuit. The color LEDs are illuminated to cause the blue light B to illuminate a particular number of pixels displayed on the panel 20. For a more specific technical content, refer to the embodiment shown in FIG. 3C which will be described later.

Please refer to FIG. 2B , the blue light B can be displayed on the panel 20 , and the display panel 20 can convert one part of the blue light B into a red light R. The red light is displayed on the red area 22R of the display panel 20, and the other part is converted into a The green light G is displayed on the green area 22G of the display panel 20, and the other part remains as the blue light B displayed on the blue area 22B of the display panel 20.

The structural display panel 20 can include a transparent substrate 21, a filter layer structure 22, and a photoluminescent layer structure 23. The transparent substrate 21 can be a rigid or flexible substrate and can be made of a light transmissive material such as glass or plastic (for example, PEN). Therefore, the light-transmitting substrate 21 can provide a plane or a curved surface to be applied to an image display device, such as a curved TV or an adjustable TV. The transparent substrate 21 is used to support the filter layer structure 22 or the photoluminescent layer structure 23, that is, one of the filter layer structure 22 and the photoluminescent layer structure 23 can be fixedly disposed on the transparent substrate 21, and It is not detached from the light-transmitting substrate 21. In this embodiment, the filter layer structure 22 is supported by the light-transmitting substrate 21, and in other embodiments (not shown), the photoluminescent layer structure 23 can be supported by the light-transmitting substrate 21.

In addition, the transparent substrate 21 can also be defined to include a light-emitting surface 211, a light-incident surface 212, and a normal direction 213. The light-emitting surface 211 and the light-incident surface 212 indicate the entrance and exit of the light, and the light-incident surface 212 faces. The blue light source 10 has a normal direction 213 perpendicular to the light exit surface 211 and the light incident surface 212, and can indicate the direction of light transmission. If the surface is transparent to the substrate 21, a certain pixel area The normal direction 213 can be defined as being locally perpendicular to the light exit surface 211 and the light incident surface 212 at the same time. The transparent substrate 21 can also be defined to include an adjacent red light penetrating region 21R, a green light penetrating region 21G and a blue light penetrating region 21B, which respectively correspond to the red color of the display panel 20 along the normal direction 213. The area 22R, the green area 22G, and the blue area 22B indicate areas through which light of different colors penetrates.

The filter layer structure 22 can be fixedly disposed on the light incident surface 212 of the transparent substrate 21, and can include a plurality of pixel units 22PU (only two of which are shown in FIG. 2A), and each of the pixel units 22PU includes adjacent ones. A red region 22R, a green region 22G, and a blue region 22B, that is, in a direction perpendicular to the normal direction 213, the red region 22R, the green region 22G, and the blue region 22B are side by side, and mutually The sides of the neighbors can be connected.

The red zone 22R is set to allow red light rays R to pass, the green zone 22G is set to allow green light rays G to pass, and the blue zone 22B is set to allow blue light rays B to pass; in other words, the green light rays G and the blue light rays B cannot pass through the red zone 22R. The red region 22R includes a red filter 221, the green region 22G includes a green filter 222, and the blue region 22B includes a blue filter 223, and each of the filters 221 to 223 can be selective for the wavelength of light. Materials such as pigments, dyes are made to allow light of the corresponding color to pass therethrough.

Each of the red region 22R, the green region 22G, and the blue region 22B may include a light shielding layer 224 disposed between the red color filter 221, the green color filter 222, and the blue color filter 223; 224 is an opaque person (such as black resin, metal, etc.), so red light R, green light G, and blue light B cannot pass through it. The light shielding layer 224 can be a frame surrounding the respective filters 221 to 223.

The photoluminescent layer structure 23 is disposed on the filter layer structure 22 toward the blue light source 10, indicating that the photoluminescent layer structure 23 is closer to the blue light source than the filter layer structure 22. In other words, the photoluminescent layer structure 23, the filter layer structure 22, and the light transmissive substrate 21 are sequentially stacked, and the light transmissive substrate 21 is relatively farthest from the blue light source 10. In other embodiments (not shown), the photoluminescent layer structure 23 is fixedly disposed on the light emitting surface 211 of the transparent substrate 21 and supported by the transparent substrate 21, and the filter layer structure 22 is relatively far away from the blue light source. 10.

The photoluminescent layer structure 23 can include a first light emitting portion 231, a second light emitting portion 232, and a light transmitting portion 233. The first light emitting portion 231 may be disposed on the filter layer structure 22 and cover the red region 22R and the green region 22G of the filter layer structure 22 along the normal direction 213 of the transparent substrate 21, but expose the blue region 22B. That is, when the first light-emitting portion 231 and the red region 22R, the green region 22G, and the blue region 22B are projected to a plane along the normal direction 213, the projection surfaces of the red region 22R and the green region 22G are located first. The projection surface of the light-emitting portion 231 is located outside the projection surface of the first light-emitting portion 231. The first light-emitting portion 231 also covers the red light-transmitting region 21R and the green light-transmitting region 21G of the light-transmitting substrate 21 along the normal direction 213, but exposes the blue light-transmitting region 21B.

The second light emitting portion 232 can be disposed on the first light emitting portion 231, is closer to the blue light source 10 than the first light emitting portion 231, and covers the red region 22R (red light penetrating region 21R) along the normal direction 213, but is exposed to green. a region 22G (green light penetrating region 21G) and a blue region 22B (blue light penetrating region 21B); that is, the second light emitting portion 232 and the red region 22R, the green region 22G, and the blue region along the normal direction 213 When 22B is projected onto a plane, the projection surface of the red region 22R is located in the projection plane of the second light emitting portion 232, but the projection surfaces of the green region 22G and the blue region 22B are located outside the projection surface of the second light emitting portion 232.

The light transmitting portion 233 may be disposed on the filter layer structure 22 adjacent to the first light emitting portion 231 and may be connected to the first light emitting portion 231. Preferably, the light transmitting portion 233 also covers the blue region 22B along the normal direction 213, but exposes the green region 22G and the red region 22R. As can be seen from the above, the filter layer The red region 22R (or the red light penetrating region 21R) of the structure 22 is covered by a portion of the first light emitting portion 231 and the second light emitting portion 232, and the green region 22G (or the green light penetrating region 21G) is the first light emitting portion 231 The other portion is covered, and the blue region 22B (or the blue light transmitting region 21B) is covered by the light transmitting portion 233.

The first light emitting portion 231 may include a green photoluminescent material (indicated by a hexagon), and may be, for example, a fluorescent material such as β-SiAlON, SrGa ₂ S ₄ or silicate to generate green light G. The second light emitting portion 232 may include a red photoluminescent material (indicated by a quadrangle), for example, a fluorescent material such as K ₂ SiF ₆ or (Ca _1-x Sr _x )AlSiN ₃ to generate a red light ray R. The first light emitting portion 231 and the second light emitting portion 232 may further include an adhesive material (for example, a light transmissive polymer material such as silicone rubber, rubber or epoxy resin) for fixing the photoluminescent material.

In addition, the green photoluminescent material and the red photoluminescent material may be materials such as inorganic photoluminescent materials, organic photoluminescent materials, or quantum dots (Quantum Dot). For example, the quantum dot material may be a binary composition, a ternary composition or a quaternary constituent material of Group II-VI, Group III-V, Group IV-VI or Group IV, for example, a binary composition quantum dot material may be CdS , CdSe, CdTe, ZnS, ZnSe, ZnTe, HgS, HgSe, HgTe (Group II-VI), AlN, AlP, AlAs, AlSb, GaN, GaP, GaAs, GaSb, InN, InP, InAs, InSb (III-V Materials such as Groups, PbS, PbSe, PbTe, SnS, SnSe, SnTe (Group IV-VI), SiC, SiGe (Group IV), and combinations thereof, for example, ternary quantum dot materials may be CdSeS, CdSeTe, CdSTe, ZnSeS , ZnTeSe, ZnSeTe, ZnSTe, CdZnS, CdZnSe, CdZnTe (Group II-VI), GaNP, GaNAs, GaNSb, GaPAs, GaPSb, AlNP, AlNAs, AlNSb, AlPAs, AlPSb (Group III-V), SnSeS, SnSeTe, SnSTe Materials such as PbSeS, PbSeTe, PbSTe (Group IV-VI) and combinations thereof, for example, quaternary quantum dot materials may be CdZnSeS, CdZnSeTe, HgZnTeS (Group II-VI), GaAlNAs, GaAlNSb, GaInNP, InAlNP (III-V) Family), SnPbSSe, SnPbSeTe, SnPbSTe (IV-VI Materials such as families and combinations thereof; quantum dot materials may also be selected from Group IV materials such as Si, Ge, and combinations thereof.

The light transmitting portion 233 allows light to pass without converting the light into light of another wavelength, so the light transmitting portion 233 may not contain any photoluminescent material. Preferably, the light transmitting portion 233 may include a light-scattering fine particle (indicated by a black dot), and may be, for example, titanium dioxide (TiO ₂ ), boron nitride (BN), cerium oxide (SiO ₂ ) or trioxide. Aluminum (Al ₂ O ₃ ) or the like. It should be noted that, when the light transmitting portion 233 is formed, a small amount of the light transmitting portion 233 may be covered by the first light emitting portion 231 and/or the second light emitting portion 232 in response to process requirements (for example, simplifying the process or increasing the tolerance). Although the light transmitting portion 233 does not include the photoluminescent material, it is not covered by the small amount of the light transmitting portion 233 and does not significantly affect the functions of the first light emitting portion 231 and the second light emitting portion 232.

Referring to FIG. 2B, a schematic diagram of light conversion of the blue light B generated by the blue light source 10 through the display panel 20 will be described below. The blue light B from the blue light source 10 can be divided into three parts, respectively facing the red zone 22R, the green zone 22G, and the blue zone 22B.

The blue light B directed toward the green area 22G first passes through the first light emitting portion 231. The green photoluminescent material of the first light-emitting portion 231 has a specific total amount, and the total amount is high, so that most of the blue light B (for example, close to 100%) can be converted into green light G; The green light G is a scattered light. Most of the green light G can then be output through the green region 22G (green light transmissive region 21G) and from the light exit surface 211 of the light transmissive substrate 21. A small portion of the green light G will advance toward the adjacent red zone 22R or blue zone 22B, but will be blocked by the red filter 221 or the blue filter 223.

The blue light B directed toward the red region 22R first passes through the second light emitting portion 232. The red photoluminescent material of the second light emitting portion 232 has a specific total amount, and the total amount is also high to make the blue light Most of the line B (for example, close to 100%) can be converted into a red ray R; the converted red ray R is a scattered ray. Most of the red light rays R are then displayed through the first light-emitting portion 231 and the red region 22R (red light-transmissive region 21R) and from the light-emitting surface 211 of the light-transmitting substrate 21. When the red ray R passes through the first illuminating portion 231, since the energy level of the red ray R is low and the green photo luminescent material is not excited, the red ray R is not converted into the green ray G by the green illuminating material. When passing through the red region 22R, the spectral composition is red, and the light energy is prevented from being largely absorbed by the red filter 221.

The blue light B directed toward the blue region 22B passes through the light transmitting portion 233 first. The light transmitting portion 233 does not convert the blue light B into the green light G or the red light R. Preferably, the blue light B is scattered by the light scattering particles to form scattered light. Most of the blue light B can then pass through the blue region 22B (blue light transmissive region 21B) and be displayed from the light exit surface 211 of the light transmissive substrate 21.

It can be seen from the above description that after the blue light B generated by the blue light source 10 passes through the photoluminescent layer structure 23, a part is converted into a red light R, another part is converted into a green light G, and a part is maintained as a blue light B, and red When the light R, the green light G, and the blue light B pass through the filter layer structure 22, the corresponding red region 22R, the green region 22G, and the blue region 22B are mainly used to effectively prevent the non-corresponding filter from being blocked. Absorption causes loss of light energy.

In other words, most of the blue light B (input light) generated by the blue light source 10 can be converted into red light R, green light G, and blue light B by the display panel 20 to display (output light), so that the PL display device 1 has a higher efficiency of light energy use (ie, the energy of the output light is significantly reduced compared to the energy of the input light).

In addition to the high efficiency of the light energy, the red light R, the green light G, and the blue light B of the output display panel 20 may be scattered light, and have a large diffusion angle. A color image composed of red light R, green light G, and blue light B may have a larger display angle when presenting or approximating a Lambertian emission pattern. Therefore, the PL display device 1 has a large viewing angle.

Furthermore, in the manufacture of the photoluminescent layer structure 23 of the PL display device 1, the process is easier to control and the yield is also higher. The reason is that the first light-emitting portion 231 covers the red region 22R and the green region 22G of the filter layer 22, so that the first light-emitting portion 231 can have a larger size, which is advantageous for manufacturing; moreover, the size of the first light-emitting portion 231 is larger than that of the first light-emitting portion 231. The size of the two light-emitting portions 232, and the two are vertically stacked rather than arranged side by side, thus significantly increasing the alignment tolerance, and thus does not require high alignment accuracy. These two advantages make the process easier to control, avoiding the lack of thickness inequality caused by poor alignment, and effectively improve production yield.

Referring to FIG. 2A, the display panel 20 of the PL display device 1 optionally further includes a flat layer structure 24 and/or a low pass filter layer structure 25 disposed on the photoluminescent layer structure 23 toward the blue light source 10. Upper, that is, the low pass filter layer structure 25 and/or the flat layer structure 24 are closer to the blue light source 10 than the photoluminescent layer structure 23.

The planar layer structure 24 can be made of a light transmissive material and can cover the photoluminescent layer structure 23 and have a flat surface. With the flat surface, the display panel 20 is easily attached to the blue light source 10. If the photoluminescent layer structure 23 itself has a flat surface, or the display panel 20 does not need to be attached to the blue light source 10, the flat layer structure 24 may be omitted.

Please refer to FIG. 2C, which is a relationship between the wavelength and the transmittance of the low-pass filter layer structure 25. The low-pass filter layer structure 25 allows the blue light B to pass, but reflects the red light R and the green light G. Therefore, the red light R and the green light G generated by the photoluminescent layer structure 23 can be prevented from advancing toward the blue light source 10. . That is, the photoluminescent layer structure 23 converts the blue light B When the red light R or the green light G is red, the red light R or the green light G is an isotropic emission, so part of the red light R and the green light G will advance toward the blue light source 10, and the low pass filter layer structure at this time 25 can reflect the red light R and the green light G so that it can still be output from the light-transmitting substrate 21, which can increase the light energy use efficiency. The low pass filter layer structure 25 can be a distributed Bragg reflector.

Please refer to FIG. 2B. In addition, the display panel 20 may be selected not to include the filter layer structure 22 such that the red light R, the green light G, and the blue light B emitted by the photoluminescent layer structure 23 are not The optical layer structure 22 is filtered to further reduce the optical energy loss.

The above is a description of the technical contents of the PL display device 1. Next, the technical contents of the PL display device according to other embodiments of the present invention will be described, and the technical contents of the respective embodiments should be referred to each other, and the same portions will be omitted or simplified. Furthermore, the technical content of the embodiments should be applicable to each other.

Please refer to FIGS. 3A and 3B, which are two schematic views of a PL display device 2 according to a second preferred embodiment of the present invention. The PL display device 2 also includes a blue light source 10 and a display panel 20. The display panel 20 can be identical to the display panel 20 of the first embodiment or the embodiment described later, and the blue light source 10 can include an organic light emitting diode module. 13 or a blue laser scanning module 14.

As shown in FIG. 3A, the organic light-emitting diode module 13 may include a plurality of side-by-side organic light-emitting diodes 131, and each of the organic light-emitting diodes 131 may be applied with electric energy to generate blue light B. Therefore, controlling the specific organic light-emitting diode 131 to generate the blue light B can cause a specific pixel region of the display panel 20 (such as the red region 22R, the green region 22G, or the blue region 22B) to be illuminated by the blue light B.

As shown in FIG. 3B, the blue laser scanning module 14 can include a blue laser light. a source (such as a blue LED) and a scanning mirror (not shown), the blue laser light source can generate a blue light B onto the scanning mirror, and then the scanning mirror reflects the blue light B to the specificity of the display panel 20. The pixel area (such as red area 22R, green area 22G or blue area 22B). The scanning mirror can change its reflection angle so that different pixel regions can be illuminated by the blue light B.

Therefore, the blue light source 10 can provide the blue light B to the display panel 20 through the organic light emitting diode module 13 or a blue laser scanning module 14, thereby forming a color image.

Please refer to FIG. 3C, which is another schematic diagram of the PL display device 2 according to the second preferred embodiment of the present invention. In another aspect, the PL display device 2 includes a light emitting diode array 10' and a display panel 20, which may be the same as the display panel 20 of the first embodiment or the later embodiment, but may not include filtering Since the photo-layer structure 22 is formed, the photo-luminescence layer structure 23 is directly formed on the light-transmitting substrate 21 and supported by the light-transmitting substrate 21.

The LED array 10' is disposed on one side of the display panel 20, and the two are separated along the normal direction 213 (not attached or assembled), and the LED array 10' can provide a blue light. B to a specific portion of the display panel 20. The light emitting diode array 10' can include a plurality of light emitting diodes 101 and a substrate structure 102. The light emitting diodes 101 are disposed on the substrate structure 102 and electrically connected to the substrate structure 102. The substrate structure 102 can include a substrate 1021, a control circuit layer 1022 (eg, a thin film transistor), an electrode layer 1023, and the like. The control circuit layer 1022 is disposed on the substrate 1021, and the electrode layer 1023 is disposed on the control circuit layer 1022. The light-emitting diodes 101 are electrically connected to the electrode layer 1023 and the control circuit layer 1022; thus, the substrate structure 102 can control the individual light-emitting diodes 101 to emit blue light B. The light-emitting diode 101 can be micro-sized. For example, the length of the wafer of the light-emitting diode 101 can be from 1 micrometer to 100 micrometers. Therefore, the light-emitting diode array 10' can also be called a micro-light emitting diode array (micro LED). Array), and PL display device 2 can be called micro hair Light LED display.

Please refer to FIG. 3D, which is still another schematic diagram of the PL display device 2 according to the second preferred embodiment of the present invention. In another aspect, the display panel 20 included in the PL display device 2 can be attached to the LED array 10' or directly formed on the LED array 10'. When the display panel 20 is directly formed on the LED array 10', the second light emitting portion 232 is formed first, and the first light emitting portion 231 is formed on the second light emitting portion 232; therefore, the second light emitting portion of a smaller size is formed. The side of 232 is covered by the first light emitting portion 231.

Please refer to FIG. 3E, which is still another schematic diagram of the PL display device 2 according to the second preferred embodiment of the present invention. In still another aspect, the LED display device 2 includes a light emitting diode array 10' for emitting an ultraviolet light UV or a deep blue light DB (having a wavelength between blue light B and ultraviolet light UV). The photoluminescent layer structure 23 of the display panel 20 further includes a third light emitting portion 234.

More specifically, the third light emitting portion 234 includes a blue photoluminescent material (indicated by a triangle) excited by ultraviolet light UV or a deep blue light DB, and may be, for example, an inorganic photoluminescent material or an organic photoluminescent material. Or a photoluminescent material such as a quantum dot (Quantum Dot) to produce blue light B. The third light-emitting portion 234 covers the red light-transmitting region 21R, the green light-transmitting region 21G, and the blue light-transmitting region 21B of the transparent substrate 21 along the normal direction 213; if the display panel 20 includes the filter layer structure 22 Then, the third light emitting portion 234 simultaneously covers the red region 22R, the green region 22G, and the blue region 22B. The first light emitting portion 231 is disposed on the third light emitting portion 234 toward the light emitting diode array 10'.

Quantum Dot photoluminescent materials excited by ultraviolet light UV or a deep blue light DB include materials such as CdSe, CdZnSe/CdS/CdZnS/ZnS, ZnSe/ZnSeS/ZnS. For quantum dots, the luminescence spectrum can change the quantum dot The inch is changed, so the size of the quantum dot is reduced to emit light of a shorter wavelength. For example, a CdSe quantum dot having a particle diameter of 2 nm emits blue light, and a CdSe quantum dot having a particle diameter of 10 nm emits red light.

Referring to Fig. 3F, a schematic diagram of light conversion of the ultraviolet light UV (or dark blue light DB) generated by the light emitting diode array 10' through the display panel 20 will be described below. Taking UV light UV as an example, it can be divided into three parts, which respectively face the red light penetrating area 21R, the green light penetrating area 21G, and the blue light penetrating area 21B.

The ultraviolet light UV toward the red light penetrating region 21R first passes through the second light emitting portion 232, and most of the ultraviolet light UV (for example, nearly 100%) can be converted into a red light ray R. The red light ray R is then outputted outward through the first light emitting portion 231, the third light emitting portion 234, and the red light transmitting region 21R. When the red light ray R passes through the first light-emitting portion 231 and the third light-emitting portion 234, since the energy level is low, it is not converted into green light G or blue light B by the green or blue photo-luminescent material.

The ultraviolet light UV toward the green light penetrating region 21G first passes through the first light emitting portion 231, and most of the ultraviolet light UV (for example, close to 100%) can be converted into green light G; the green light G can then pass through the third light emitting The portion 234 and the green light penetrating region 21G are outputted outward. When the green light G passes through the third light-emitting portion 234, the blue light-emitting material is not converted into the blue light B because the energy level is low.

The ultraviolet light UV toward the blue light-transmitting region 21B passes through the third light-emitting portion 234, and most of the ultraviolet light UV (for example, close to 100%) can be converted into blue light B, and then passes through the blue light-transmitting region 21B. Output out.

As can be seen from the above description, the ultraviolet light UV (or deep blue light DB) generated by the light-emitting diode array 10' passes through the photoluminescent layer structure 23, and a part thereof is converted into a red light R. The other portion is converted into a green light G, and a portion is converted into a blue light B, which is emitted through the red light penetrating region 21R, the green light penetrating region 21G, and the blue light penetrating region 21B, respectively.

Since the third light emitting portion 234 simultaneously covers the red light transmitting region 21R, the green light transmitting region 21G, and the blue light transmitting region 21B, the third light emitting portion 234 can have a large size and does not require a special alignment step. Easy to manufacture.

Please refer to FIG. 4A, which is a schematic diagram of a PL display device 3 according to a third preferred embodiment of the present invention. The PL display device 3 is similar to the aforementioned PL display device 1 or 2, except that the green photoluminescent material contained in the first light-emitting portion 231 of the PL display device 3 is not uniformly distributed.

Specifically, the first light emitting portion 231 may include a first region 2311 and a second region 2312 which are adjacent and integrally formed, and the first region 2311 shields the red region 22R, and the second region 2312 shields the green region 22G. The two light emitting portions 232 are disposed on the first region 2311. The green photoluminescent material included in the first light emitting portion 231 can be concentratedly distributed in the second region 2312. Therefore, the concentration or total amount of the green photoluminescent material of the first region 2311 is lower than the green light of the second region 2312. The concentration or total amount of the luminescent material. In addition, the green photoluminescent material may also be distributed only in the second region 2312, so that there is no green photoluminescent material in the first region 2311.

Referring to FIG. 2B, the blue light B toward the second light-emitting portion 232 can be converted into a red light R by the red photo-luminescence material, and the red light R then passes through the first region 2311 and the red region 22R, and from the transparent substrate. The illuminating surface 211 of 21 is displayed. Since the first region 2311 has less or no green photoluminescent material, the process of passing the red light R through the first region 2311 is less likely to be scattered and hindered by the green photoluminescent material, and the optical energy loss can be further reduced. Therefore, more red light rays R may pass through the first region 2311 and the red region 22R to exit the light emitting surface 211 of the transparent substrate 21. display.

In addition, the thickness of the first region 2311 and the second region 2312 of the first light-emitting portion 231 may be set to be the same in size, or may be set to be different according to design requirements.

Please refer to FIG. 4B, which is another schematic diagram of a PL display device 3 according to a third preferred embodiment of the present invention. In another aspect, the PL display device 3 can include an array of light emitting diodes (not shown) for generating ultraviolet light UV (or dark blue light DB), and the blue light included in the third light emitting portion 234 The luminescent material is non-uniformly distributed.

Specifically, the third light-emitting portion 234 includes a first region 2341 and a second region 2342 which are adjacent and integrally formed. The first region 2341 covers the red light-transmitting region 21R and the green light-transmitting region 21G. The second region 2342 covers the blue light transmissive region 21B, and the blue photoluminescent material contained in the third light emitting portion 234 is concentratedly distributed in the second region 2342. Therefore, the concentration or total of the blue photoluminescent material of the first region 2341 is The amount is lower than the concentration or total amount of the blue photoluminescent material of the second region 2342. In addition, the blue photoluminescent material may also be distributed only in the second region 2342, so that there is no blue photoluminescent material in the first region 2341.

Referring to FIG. 3B , the ultraviolet light UV (or dark blue light DB) toward the second light emitting portion 232 and the first light emitting portion 231 can be converted into a red light R and a green light G, and then passed through the third light emitting portion 234. The first region 2341; since the first region 2341 has less or no blue photoluminescent material, the red light R and the green light G are less scattered and hindered by the blue photoluminescent material, and the optical energy loss can be further reduced. Therefore, more red light rays R and green light rays G can be outputted through the first area 2341.

Please refer to FIG. 5A, which is a schematic diagram of a PL display device 4 according to a fourth preferred embodiment of the present invention (a blue light source or a light emitting diode array is not shown). PL display device 4 and the aforementioned PL The display devices 1 and 3 are similar in that the filter layer structure 22 of the PL display device 4 further includes a high pass filter 225, and the display panel 20 further includes a plurality of light reflecting structures 26.

Specifically, the high pass filter 225 covers the red region 22R and the green region 22G toward the blue light source or the light emitting diode array (not shown), but does not cover the blue region 22B. As shown in FIG. 5B (the relationship between the wavelength and the transmittance of the high-pass filter 225), the high-pass filter 225 can reflect the blue light B, but allows the red light R and the green light G to pass. Thus, if the blue light B passes through the first light emitting portion 231 and the second light emitting portion 232 and is not completely converted into the green light G and the red light R, the unconverted blue light B is reflected by the high pass filter 225. The first light-emitting portion 231 and the second light-emitting portion 232 are returned to the green light G and the red light R, and then passed through the green region 22G and the red region 22R, respectively, and then output to the outside of the PL display device 4.

Therefore, the high-pass filter 225 can further ensure that the blue light B is converted into the green light G and the red light R by the first light-emitting portion 231 and the second light-emitting portion 232 to prevent the unconverted blue light B from being filtered. The layer structure 22 absorbs, thereby improving the light energy use efficiency of the PL display device 4. Preferably, the high-pass filter 225 can be implemented in conjunction with the PL display device 3 of the third preferred embodiment of the present invention such that the first region 2311 of the first light-emitting portion 231 has a smaller or lower concentration of green photoluminescence. Materials, or no green photoluminescent materials, for better implementation. In addition, the high pass filter 225 can also cover only the red area 22R or the green area 22G according to design requirements.

The light reflecting structures 26 are disposed on the filter layer structure 22 toward a blue light source or a light emitting diode array (not shown), and each of the light reflecting structures 26 can cover the blue along the normal direction 213. One side of one of the color region 22B (blue light penetrating region 21B), the red region 22R (red light penetrating region 21R), and the green region 22G (green light penetrating region 21G); in other words, in a cross-sectional view, blue Both sides of the color region 22B are covered by two light reflecting structures 26, in the above view, the blue region The periphery of 22B is surrounded by the light reflecting structure 26, as is the red zone 22R and the green zone 22G. Preferably, the light reflecting structure 26 covers the light shielding layer 224 of the blue region 22B, the red region 22R and the green region 22G, and the shape of the light reflecting structure 26 corresponds to the shape of the light shielding layer 224.

The photoluminescent layer structure 23 is disposed between the light reflecting structures 26, wherein the first region 2311 and the second region 2312 of the first light emitting portion 231 are separated by the light reflecting structure 26, and the second region 2312 is The light transmitting portion 233 is also separated by the light reflecting structure 26. The first region 2311, the second region 2312, the second light emitting portion 232, and the light transmitting portion 233 are all surrounded by the light reflecting structure 26.

The light reflecting structure 26 can block or reflect the red light R, the green light G, and the blue light B to further improve the light energy use efficiency of the PL display device 4. Specifically, taking the red light R as an example, it exhibits a scattering in the photoluminescent layer structure 23, so that some light is transmitted laterally, that is, toward the green area 22G or the blue area 22B; The reflective structure 26 can reflect the portion of the light such that the portion of the light still has a chance to be output to the outside of the light-emitting device 4 through the red region 22R; the same is true for the green light G and the blue light B.

Therefore, the light reflecting structure 26 can reflect the laterally transmitted light and increase the red light R, the green light G, and the blue light B passing through the filter layer structure 22, so that the PL display device 4 can have better light energy use efficiency. In other words, the light reflecting structure 26 can ensure that the red light R generated by the second light emitting portion 232 does not advance toward the green region 22G or the blue region 22B, and is also the same for the green light G and the blue light B.

The light reflecting structure 26 may be made of a light transmissive resin containing one of the light scattering particles. For example, the light transmissive resin may be polyphthalamide or poly(cyclohexanedimethylene terephthalate). (Polycyclolexylene-di-methylene Terephthalate), Epoxy molding compound, silicone or rubber. The light reflecting structure 26 may also be made of a photosensitive resin or the like; or a reflective structure 26 of a resin material may be formed first, and then a metal reflective layer may be plated on the surface thereof; or a non-organic material such as metal may be used.

Each of the above-described high-pass filter 225 and light-reflecting structure 26 can increase the efficiency of light energy use efficiency of the PL display device 4, but it is not necessarily required to be performed at the same time. Therefore, one of the high pass filter 225 and the light reflecting structure 26 can be selected as desired.

Please refer to FIG. 5C, which is another schematic diagram of the PL display device 4 according to the fourth preferred embodiment of the present invention. In another aspect, the photoluminescent layer structure 23 of the PL display device 4 includes a third light emitting portion 234 disposed between the light reflecting structures 26. In addition, the thickness of the reflective structure 26 can also be less than or equal to the thickness of the third light emitting portion 234 (not shown), so the first light emitting portion 231 and the second light emitting portion 232 are not surrounded by the reflective structure 26.

Please refer to FIG. 6A and FIG. 6B, which are schematic diagrams of a PL display device 5 according to a fifth preferred embodiment of the present invention (a blue light source or a light emitting diode array is not shown). The PL display device 5 is similar to the aforementioned PL display device 4, with the difference that the filter layer structure 22 of the PL display device 5 is different.

Specifically, in the PL display device 5, the red region 22R of the filter layer structure 22 includes a first high pass filter 2251, and the green region 22G includes a second high pass filter 2252, but the blue region 22B does not include The high pass filter; the red zone 22R, the green zone 22G and the blue zone 22B do not contain red, green and blue filters. Wherein, since the blue region 22B does not include the blue light detector and the high-pass filter, the light transmitting portion 233 or the third light emitting portion 234 of the photoluminescent layer structure 23 can be connected or in contact with the transparent substrate 21.

As described above, the first and second high-pass filters 2251 and 2252 ensure that the blue light B (dark blue light DB or ultraviolet light UV) is used by the first light emitting portion 231 and the second light emitting portion 232. The green light G and the red light R are converted, and the light reflecting structure 26 ensures that the red light R does not advance toward the green area 22G or the blue area 22B, and the green light G does not advance toward the red area 22R or the blue area 22B. The blue light B does not advance toward the green area 22G or the red area 22R. Therefore, only the red light R passes through the red region 22R, only the green light G passes through the green region 22G, and only the blue light B passes through the blue region 22B.

Therefore, the red area 22R, the green area 22G, and the blue area 22B may not include red, green, and blue filters, and the PL display device 5 may have the same image display function because there is no other non-corresponding color light. Through it. Preferably, the PL display device 5 can be implemented in conjunction with the PL display device 3 such that the first region 2311 of the first light emitting portion 231 does not include a green photoluminescent material to obtain a better implementation effect.

Please refer to FIGS. 7A and 7C, which are schematic diagrams of a photoluminescence LED display device 6 in accordance with a sixth preferred embodiment of the present invention. The PL display device 6 is similar to the PL display device 1 described above, except that the second light-emitting portion 232 included in the photoluminescent layer structure 23 of the PL display device 6 covers both the red region 22R and the green region 22G (ie, the first The same as in the case of the light-emitting portion 231). Preferably, the size of the second light emitting portion 232 may be slightly smaller than the size of the first light emitting portion 231.

Referring to FIG. 7B, a schematic diagram of light conversion of the blue light B generated by the blue light source 10 or the LED array 10' through the display panel 20 will be described. The blue light B from the blue light source 10 or the light emitting diode array 10' can be divided into three portions, which are respectively directed to the red region 22R, the green region 22G, and the blue region 22B.

The blue light B toward the blue region 22B passes through the light transmitting portion 233 and the blue region 22B, and is then displayed from the light transmitting substrate 21.

The blue light B that faces the red area 22R and the green area 22G passes through the second light Part 232. The red photoluminescent material of the second light emitting portion 232 has a specific total amount (this total amount should be lower than the total amount of the red photoluminescent material of the first embodiment) so that the blue color passing through the second light emitting portion 231 Only a part (for example, one-half) of the light B is converted into a red light R, and the rest is still a blue light B; in other words, the blue light B passes through the second light-emitting portion 232 and is converted into a red light R and a blue light. B's red and blue mixed light.

The red-blue mixed light then passes through the first light emitting portion 231. The green photoluminescent material of the first light-emitting portion 231 can convert the blue light B in the red-blue mixed light into the green light G; in other words, the red-blue mixed light passes through the second light-emitting portion 232 and is converted into a red light R and a green color. Red and green mixed light of light G. The red-green mixed light then reaches the filter layer structure 22, the red region 22R filters out the red light R from the red-green mixed light, and the green region 22G filters the green light G from the red-green mixed light. Finally, the filtered red light R and the green light G are output from the light-transmitting substrate 21.

From this, it is understood that a part (for example, one-half) of the red-green mixed light generated by the first light-emitting portion 231 is blocked by the filter layer structure 22 and cannot be emitted from the light-transmitting substrate 21. Therefore, compared with the PL display device 1, the PL display device 6 has a lower light energy use efficiency (for example, nearly one-half) of the red light R and the green light G, but is still higher than that of the conventional liquid crystal display device. In the light energy use efficiency of the blue light B, the PL display devices 1 and 6 should be similar (for example, close to 100%).

On the other hand, the PL display device 6 can be made easier in the manufacture of the photoluminescent layer structure 23. The reason is that the first light-emitting portion 231 and the second light-emitting portion 232 both cover the red region 22R and the green region 22G of the filter layer 22, so that the second light-emitting portion 232 and the first light-emitting portion 231 both have larger sizes. At the same time, the size of the second light-emitting portion 232 can be slightly smaller than that of the first light-emitting portion 231, and therefore has a large alignment tolerance in manufacturing, without requiring high alignment accuracy.

The photoluminescent layer structure 23 of the PL display device 6 may also include a third light emitting portion 234 (as shown in Fig. 3E) to match the deep blue light DB or the ultraviolet light UV light emitting diode array 10'. Referring to FIG. 7B, when the photoluminescent layer structure 23 includes a third light emitting portion 234, the ultraviolet light UV (dark blue light DB) toward the blue region 22B is converted into blue by the third light emitting portion 234. Light B. The ultraviolet light UV toward the red region 22R and the green region 22G first passes through the second light-emitting portion 232, and is converted into a red-light mixed light of red light R and ultraviolet light UV. The red ultraviolet mixed light then passes through the first light emitting portion 231 to convert the ultraviolet light in the red ultraviolet mixed light into a green light G; in other words, the red ultraviolet mixed light passes through the second light emitting portion 232 and is converted into a red light R and a green light. The red-green mixed light of G then passes through the third light-emitting portion 234 and reaches the filter layer structure 22.

Please refer to FIG. 8, which is a schematic diagram of a photoluminescence LED display device 7 in accordance with a seventh preferred embodiment of the present invention. The PL display device 7 is similar to the aforementioned PL display device 6, except that the photoluminescent layer structure 23 of the PL display device 7 does not include the second light emitting portion, and the first light emitting portion 231 of the photoluminescent layer structure 23 includes A phase mixed red photoluminescent material and a green photoluminescent material. That is, in the first light emitting portion 231, both the red photoluminescent material and the green photoluminescent material are uniformly distributed.

Therefore, the blue light B of the blue light source or the LED array (not shown) can be converted into the red-green mixed light of the red light R and the green light G by the first light-emitting portion 231, and then the red region 22R and the green region 22G. The red light R and the green light G are filtered from the red and green mixed light. Therefore, the manner in which the PL display device 7 generates the red light R and the green light G is similar to that of the PL display device 6, so that the PL display devices 7 and 6 should be similar in light energy use efficiency of the red light R and the green light G. In this way, the alignment step between the first light emitting portion 231 and the second light emitting portion 232 can be omitted. To simplify the process.

The first light emitting portion 231 may also include a yellow photoluminescent material instead of the red photoluminescent material and the green photoluminescent material. The yellow photoluminescent material may be a fluorescent material such as YAG. Therefore, the blue light B of the blue light source or the LED array (not shown) can be converted into the yellow light Y by the first light emitting portion 231, and the spectrum of the yellow light Y covers the red spectrum and the green spectrum, so the red region 22R and The green area 22G filters out the red light R and the green light G from the yellow light Y.

Please refer to FIG. 9A and FIG. 9C, which are schematic diagrams of a photoluminescence LED display device 8 according to an eighth preferred embodiment of the present invention. The PL display device 8 is similar to the PL display device 6 described above, except that each of the first light-emitting portion 231 and the second light-emitting portion 232 included in the photoluminescent layer structure 23 of the PL display device 8 simultaneously covers the red region 22R, Green area 22G and blue area 22B.

Please refer to FIG. 9B for a schematic diagram of light conversion of the blue light B generated by the blue light source 10 or the LED array 10' through the display panel 20. The blue light B from the blue light source 10 or the light emitting diode array 10' passes through the second light emitting portion 232 first. The red photoluminescent material of the second light emitting portion 232 has a specific total amount such that only a part (for example, one third) of the blue light B passing through the second light emitting portion 232 is converted into a red light R, and the rest Still blue light B (for example, two-thirds); in other words, the blue light B passes through the second light-emitting portion 232 and is converted into a red-blue mixed light of red light R and blue light B (the ratio of blue light B is higher) Big).

The red-blue mixed light then passes through the first light emitting portion 231. The green photoluminescent material of the first light-emitting portion 231 has a specific total amount such that only a part (for example, one-half) of the blue light B in the red-blue mixed light is converted into green light G; in other words, red and blue mixed After the light passes through the second light emitting portion 232, it is converted into a red, green and blue mixture of red light R, green light G and blue light B. The light is combined (the ratio of the three is similar).

The red, green and blue mixed light then reaches the filter layer structure 22, the red zone 22R filters out the red light R from the red, green and blue mixed light, and the green zone 22G filters out the green light G from the red, green and blue mixed light, the blue zone 22B filters blue light B from the red, green and blue mixed light. Finally, the filtered red light R, green light G, and blue light B are displayed from the light-transmitting substrate 21.

It can be seen that a part (for example, two-thirds) of the red, green and blue mixed light rays generated after passing through the first light-emitting portion 231 is blocked by the filter layer structure 22 and cannot be output from the light-transmitting substrate 21. Therefore, compared with the PL display devices 6 and 1, the PL display device 8 has lower light energy use efficiency of the red light R, the green light G, and the blue light B (similar to the light energy use efficiency of the conventional liquid crystal display device, For example, close to a third).

However, the PL display device 8 is relatively easier in the fabrication of the photoluminescent layer structure 23. The reason is that the first light-emitting portion 231 and the second light-emitting portion 232 cover the red region 22R, the green region 22G, and the blue region 22B at the same time, so that the pixelation process steps of the first light-emitting portion 231 and the second light-emitting portion 232 can be omitted. The filter layer structure 22 is covered over the entire surface, so that alignment between the first light-emitting portion 231 and the second light-emitting portion is not required, and the photo-emitting layer structure 23 and the filter layer structure 22 need not be performed. The alignment has greatly reduced the difficulty of manufacturing. At the same time, the PL display device 8 still has a larger viewing angle than the conventional liquid crystal display device.

Please refer to FIG. 9D, which is another schematic diagram of the PL display device 8 according to the eighth preferred embodiment of the present invention. In another aspect, the photoluminescent layer structure 23 of the PL display device 8 can include a third light emitting portion 234 to match the deep blue light DB or the ultraviolet light UV light emitting diode array 10'. Referring to FIG. 9B, the ultraviolet light UV (dark blue light DB) toward the blue region 22B first passes through the second light emitting portion 232, and only a part (for example, one third) of the ultraviolet light UV is converted into The red light rays R, while the rest are still UV light UV (for example, two-thirds); in other words, the ultraviolet light UV is converted into red-violet mixed light by the second light-emitting portion 232.

The red-violet mixed light then passes through the first light-emitting portion 231, and only a part (for example, one-half) of the ultraviolet light UV in the red-violet mixed light is converted into green light G, and the red-violet mixed light is converted into a red-green ultraviolet mixed light ( The proportion of the three is similar). The red-green ultraviolet mixed light then reaches the third light-emitting portion 234, and the ultraviolet light UV in the red-green ultraviolet mixed light is mostly converted into blue light, and the red-green ultraviolet mixed light passes through the third light-emitting portion 234 and is converted into a red-green-blue mixture. Light (the ratio of the three is similar).

The red, green and blue mixed light then reaches the filter layer structure 22, the red zone 22R filters out the red light R from the red, green and blue mixed light, and the green zone 22G filters out the green light G from the red, green and blue mixed light, the blue zone 22B filters blue light B from the red, green and blue mixed light.

Please refer to FIG. 10, which is a schematic diagram of a photoluminescence LED display device 9 in accordance with a ninth preferred embodiment of the present invention. The PL display device 9 is similar to the PL display device 8 described above, except that the photoluminescent layer structure 23 of the PL display device 9 does not include the second light emitting portion, and the first light emitting portion 231 includes a mixed red light. Luminescent materials and green photoluminescent materials.

Therefore, the blue light B of the blue light source or the LED array (not shown) may be partially (for example, two-thirds) converted into the red light R and the green light G by the first light-emitting portion 231, and then converted. The blue light B forms a red, green and blue mixed light (the ratio of the three is similar), and then the red region 22R, the green region 22G and the blue region 22B respectively filter out the red light R and the green light G from the red, green and blue mixed light. Blue light B. Therefore, the manner in which the PL display device 9 generates the red light R and the green light G is similar to that of the PL display device 8, so that the light energy use efficiency of the PL display devices 9 and 8 should be similar (for example, nearly one-third).

The first light emitting portion 231 may also include a yellow photoluminescent material. In this case, the blue light B of the blue light source or the LED array (not shown) may be partially converted into the yellow light Y by the first light emitting portion 231, and the spectrum of the yellow light Y covers the red spectrum and the green spectrum. And the blue light B that is not converted forms a mixed light having a red, green and blue spectrum, so the red region 22R, the green region 22G and the blue region 22B filter out the red light R from the mixed light having the red, green and blue spectrum. Green light G and blue light B.

Next, a method of manufacturing a PL display device according to the present invention, which can produce PL display devices 1 to 9 which are the same as or similar to the above-described embodiments, and the technical contents of the manufacturing method and the technology of the PL display devices 1 to 9 will be described. The content can be referenced to each other.

Please refer to FIGS. 11A to 11D, which are schematic diagrams showing the steps of a method of manufacturing a PL display device according to a preferred embodiment of the present invention.

The manufacturing method can mainly include two steps: forming a display panel 20 (as shown in FIG. 11D); and placing a blue light source 10 (refer to FIG. 2A) or a light emitting diode array 10' (refer to 3C) Figure) is placed on one side of a display panel 20. The following process may be included in the step of forming the display panel 20.

As shown in FIG. 11A, a transparent substrate 21 is first provided, and then a filter layer structure 22 is formed on the transparent substrate 21. The filter layer structure 22 is formed by forming a red filter 221 in the red region 22R, a green filter 222 in the green region 22G, and a blue filter 223 in the blue region. In area 22B. Additionally, a high pass filter 225 (shown in Figure 5A) is optionally formed on the red region 22R and/or the green region 22G.

As shown in FIG. 11B, a photoluminescent layer structure 23 is then formed on the filter layer structure 22. That is, a first light emitting portion 231 is formed on the filter layer structure 22, and the first light is emitted. The portion 231 covers the red region 22R and the green region 22G; then a second light emitting portion 232 is formed on the first light emitting portion 23, and the second light emitting portion 232 covers the red region 22R.

The formation of the first light-emitting portion 231 and the second light-emitting portion 232 may be assisted by one or a plurality of shielding plates 30 (as shown in FIG. 12); the shielding hole includes a plurality of openings 31, and the size of the opening 31 may correspond to the first The size of the light emitting portion 231 or the second light emitting portion 232. Specifically, a shielding plate 30 is first placed on the filter layer structure 22 (which can contact the light transmissive layer structure 22 or a distance), and the opening 31 of the shielding plate 30 is covered in the green area 22G and the red area 22R (also That is, the green region 22G and the red region 22R can be observed from the opening 31 along the normal direction 213; then, a green photoluminescent material and a polymer material are deposited in the green region 22G and red through the opening 31. On area 22R. After the polymer material is cured, the first light emitting portion 231 can be formed.

Thereafter, another shielding plate 30 is placed on the first light emitting portion 231 (which may contact the first light emitting portion 231 or a distance), and the opening 31 of the shielding plate 30 is covered only in the red region 22R; then, a red light is used The luminescent material and a polymer material are deposited on the red region 22R through the opening 31. After the polymer material is cured, the second light emitting portion 232 can be formed.

In addition to the shielding plate 30, the formation of the first light-emitting portion 231 and the second light-emitting portion 232 can also be achieved by lithography. Specifically, the green photoluminescent material and the polymer material are deposited on the red region 22R, the green region 22G, and the blue region 22B, that is, the filter layer structure 22 is covered over the entire surface, and the polymer material is a photosensitive material. Next, the polymer material is exposed and developed to remove the portion of the polymer material deposited in the blue region 22B. In this manner, the first light emitting portion 231 can be formed.

Thereafter, a red photoluminescent material and a polymer material are deposited on the first light-emitting portion 231 and the blue region 22B; then, the polymer material is exposed and developed to be a polymer material. The portion deposited on the blue region 22B and the portion deposited on the first light-emitting portion 231 corresponding to the green region 22G are removed. In this manner, the second light emitting portion 232 can be formed.

Preferably, the above-described deposition of the photoluminescent material and the polymer material can be achieved by the method disclosed in the U.S. Patent Application Publication No. US 2010/0119839 (the Taiwan Patent No. I508331). . This method allows the material to be uniformly deposited, so that the first light-emitting portion 231 and the second light-emitting portion 232 can have a uniform thickness. In addition, the method can make the material densely deposited, so that the first light-emitting portion 231 and the second light-emitting portion 232 can have a higher concentration of photoluminescent material.

After the first light emitting portion 231 and the second light emitting portion 232 are formed, a scattering particle and another polymer material may be deposited on the blue region 22B to form the light transmitting portion 233 of the photoluminescent layer structure 23 (eg, Figure 11C shows). The scattering particles and the polymer material may be mixed first, and then deposited onto the blue region 22B by spraying or dispensing; or may be masked by spraying or printing. Plate 30 is deposited onto blue zone 22B. Among them, when the spraying method is adopted, the polymer material has good fluidity, and after spraying, the scattering fine particles and the polymer material can be collected by themselves into the blue region 22B by the action of gravity, and the light transmitting portion 233 is formed after curing. Therefore, it is also possible to simplify the process without using the shielding plate 30 and the related alignment steps. Moreover, since the scattering fine particles do not change the color of the light, if a small amount of scattering fine particles and polymer material are applied to the surface of the first light-emitting portion 231 and/or the second light-emitting portion 232 during the process, the The function of both has a significant impact.

After formation of the photoluminescent layer structure 23, a planar layer structure 24 and/or a low pass filter layer structure 25 is selectively formed on the photoluminescent layer structure 23 (as shown in FIG. 11D). In addition, if the display panel 20 does not include the filter layer structure 22, the photoluminescent layer structure 23 can be directly formed. On the light-transmissive substrate 21.

By the above steps, a PL display device similar to the first to third embodiments can be manufactured.

On the other hand, after the filter layer structure 22 is formed, a plurality of light reflecting structures 26 (as shown in FIG. 5A) may be formed on the filter layer structure 22, and then the photoluminescent layer structure 23 is formed on the light reflecting structure 26. between. Thus, a PL display device similar to the fourth and fifth embodiments can be manufactured.

On the other hand, in the process of forming the photoluminescent layer structure 23, it can be as shown in Figs. 11E and 11F. First, a third light-emitting portion 234 is formed on the filter layer structure 22, and simultaneously covers the red region 22R, the green region 22G, and the blue region. Then, the first light-emitting portion 231 and the second light-emitting portion 232 are sequentially formed.

On the other hand, in the process of forming the photoluminescent layer structure 23, the second light emitting portion 232 can be simultaneously covered with the red region 22R and the green region 22G (as shown in FIG. 11G); or, the second light emitting portion 232 is not formed. However, the first light-emitting portion 231 includes a mixed red photoluminescent material and a green photoluminescent material, or a yellow photoluminescent material. Alternatively, after the third light-emitting portion 234 is formed, the first light-emitting portion 231 and the second light-emitting portion 232 are sequentially formed. Thus, a PL display device similar to the sixth and seventh embodiments can be manufactured.

On the other hand, in the process of forming the photoluminescent layer structure 23, the first light emitting portion 231 and the second light emitting portion 232 can simultaneously cover the red region 22R, the green region 22G, and the blue region 22B (as shown in FIG. 11H). Or, the second light-emitting portion 232 is not formed, but the first light-emitting portion 231 includes a mixed red photo-luminescence material and a green photo-luminescence material, or a yellow photo-luminescence material. Alternatively, after the third light-emitting portion 234 is formed, the first light-emitting portion 231 and the second light-emitting portion 232 are sequentially formed. Thus, a PL display device similar to the eighth and ninth embodiments can be manufactured.

Please refer to FIGS. 13A to 13C, which are preferred according to the present invention. Schematic diagram of the steps of the method of manufacturing the PL display device of the embodiment. In the manufacturing method of this embodiment, the light-emitting diode array 10' and the display panel 20 are separately manufactured, and then the two are assembled together.

Specifically, as shown in FIG. 13A, a substrate structure 102 is provided. The substrate structure 102 may include a substrate 1021, a control circuit layer 1022 (eg, a thin film transistor), an electrode layer 1023, and the like; As shown in FIG. 13B, a plurality of light emitting diodes 101 are disposed on the substrate structure 102, and the light emitting diodes 101 are electrically connected to the substrate structure 102, for example, the flip chip type light emitting diode 101 is soldered. After the electrode layer 1023 is electrically connected to the control circuit layer 1022; thus, the LED array 10' is manufactured. As shown in FIG. 13C, the completed LED array 10' is aligned with the display panel 20, and then assembled and assembled to complete a PL display device. When the assembly is assembled, the LED array 10' It can be further glued to the display panel 20.

Preferably, the LED array 10' and the display panel 20 are assembled and assembled through a sealing structure 40. The sealing structure 40 surrounds the LED array 10'. Therefore, the display panel 20 may not be illuminated. The LED array 10' is in direct contact. Preferably, when the LED array 10' is manufactured, a reflective structure or a transparent structure 103 may be formed between the LEDs 101, and the transparent structure 103 may further cover the LEDs 101. The top surface; thus, the LED array 10' has a flat upper surface as a whole for easy assembly and assembly with the display panel 20. Therefore, the display panel 20 can also be combined with the transparent structure 103 of the LED array 10'. direct contact.

The photoluminescent LED display device and the method for fabricating the same according to various preferred embodiments of the present invention have been described above, and the technical content of the above embodiments is not intended to limit the protection of the present invention. Protection range. It is to be understood that the scope of the invention is to be construed as being limited by the scope of the invention.

Claims (36)

A photoluminescent LED display device comprising: an array of light emitting diodes for providing a blue light, a deep blue light or an ultraviolet light; and a display panel disposed on one side of the array of light emitting diodes The display panel includes a transparent substrate and a photoluminescent layer structure for supporting the photoluminescent layer structure. The transparent substrate includes an adjacent red light penetrating region and a green layer. a light-transmitting layer and a blue light-emitting region, the photo-emitting layer structure is disposed on the light-transmitting substrate toward the light-emitting diode array, and the photo-emitting layer structure comprises a first light-emitting portion and a second light-emitting portion The first light-emitting portion covers the red light-transmitting region and the green light-transmitting region along a normal direction of the light-transmitting substrate, and the second light-emitting portion is disposed toward the light-emitting diode array. The first light emitting portion covers the red light transmitting region along the normal light direction; wherein the first light emitting portion includes a first photoluminescent material and a first polymer material, and the second The light emitting portion includes a second photoluminescent material and a second Molecular materials, and the photoluminescence peak wavelength of the second light system of a light emitting material produced by photoluminescence induced greater than the first peak wavelength light of the other light emitting material produced by photoluminescence. The photoluminescent LED display device of claim 1, wherein the LED array comprises a plurality of light emitting diodes and a substrate structure, wherein the light emitting diodes are disposed on the substrate structure and electrically connected To the substrate structure. The photoluminescent LED display device of claim 1 or 2, wherein the display panel Further comprising a filter layer structure, the filter layer structure comprises an adjacent red zone, a green zone and a blue zone, the red zone being arranged to allow a red light to pass, the green zone being arranged to allow a green light Passing, the blue region is configured to allow a blue light to pass through; wherein the photoluminescent layer structure is disposed on the filter layer structure toward the light emitting diode array, and the red region of the filter layer The green region and the blue region respectively cover the red light penetrating region, the green light penetrating region, and the blue light penetrating region. The photoluminescent LED display device of claim 3, wherein the red region comprises a red filter, the green region comprising a green filter, the blue region comprising a blue filter. The photoluminescent LED display device of claim 3, wherein the filter layer structure further comprises a high pass filter, the high pass filter covering the red region and/or the green region. The photoluminescent LED display device of claim 1 or 2, wherein the display panel further comprises a low pass filter layer structure and/or a flat layer structure disposed on the light emitting diode array The structure of the luminescent layer. The photoluminescent LED display device of claim 1 or 2, wherein the display panel further comprises a plurality of light reflecting structures, each of the light reflecting structures covering the blue light transmitting region along the normal direction One side of one of the red light penetrating region and the green light penetrating region. The photoluminescent LED display device of claim 1 or 2, wherein the photoluminescent layer structure further comprises a light transmitting portion, the first photoluminescent material is a green photoluminescent material, and the second The photoluminescent material is a red photoluminescent material; The second light emitting portion covers the red light transmitting region along the normal direction, but exposes the green light transmitting region and the blue light transmitting region; the light transmitting portion is adjacent to the first light emitting portion, and The blue light penetrating region is covered along the normal direction. The photoluminescent LED display device of claim 8, wherein the green photoluminescent material is a green light quantum dot material, and/or the red photoluminescent material is a red light quantum dot material. The photoluminescent LED display device of claim 8, wherein the first light emitting portion comprises an adjacent and integrally formed first region and a second region, wherein the first region covers the red light a penetrating region, the second region covering the green light penetrating region; the second light emitting portion is disposed on the first region toward the array of the light emitting diodes; wherein the green photoluminescent material of the first region One of the concentrations or total amounts is lower than the concentration or total amount of the green photoluminescent material of the second zone. The photoluminescent LED display device of claim 8, wherein the photoluminescent layer structure further comprises a third light emitting portion, the third light emitting portion comprising a blue photoluminescent material, the first light emitting portion facing the The LED array is disposed on the third light emitting portion, and the third light emitting portion covers the red light penetrating region, the green light penetrating region and the blue light penetrating region simultaneously along the normal direction. The photoluminescent LED display device of claim 11, wherein the blue photoluminescent material is a blue quantum dot material. The photoluminescent LED display device of claim 11, wherein the third light emitting portion comprises a first region and a second region which are adjacent and integrally formed, wherein the first region is covered. Covering the red light-transmitting region and the green light-transmitting region, the second region covering the blue light-transmitting region; the first light-emitting portion is disposed on the first region toward the light-emitting diode array; The concentration or total amount of one of the blue photoluminescent materials of the first region is lower than the concentration or total amount of the blue photoluminescent material of the second region. The photoluminescent LED display device of claim 4, wherein the photoluminescent layer structure further comprises a light transmitting portion, the first photoluminescent material is a green photoluminescent material, and the second light is The illuminating material is a red luminescent material; wherein the second illuminating portion covers the red light transmitting region and the green light transmitting region simultaneously along the normal direction; the light transmitting portion is adjacent to the first illuminating portion And covering the blue light penetrating region along the normal direction. The photoluminescent LED display device of claim 14, wherein the green photoluminescent material is a green light quantum dot material and/or the red photoluminescent material is a red light quantum dot material. The photoluminescent LED display device of claim 14, wherein the photoluminescent layer structure further comprises a third light emitting portion, the third light emitting portion comprising a blue photoluminescent material, the first light emitting portion facing the The LED array is disposed on the third light emitting portion, and the third light emitting portion covers the red light penetrating region, the green light penetrating region and the blue light penetrating region simultaneously along the normal direction. The photoluminescent LED display device of claim 16, wherein the blue photoluminescent material is a blue quantum dot material. The photoluminescent LED display device of claim 4, wherein the first photoluminescence The material is a green photoluminescent material, and the second photoluminescent material is a red photoluminescent material; wherein the first light emitting portion covers the red light penetrating region along the normal direction, a green light penetrating region and the blue light penetrating region; the second light emitting portion simultaneously covers the red light penetrating region, the green light penetrating region and the blue light penetrating region along the normal direction. The photoluminescent LED display device of claim 18, wherein the green photoluminescent material is a green light quantum dot material and/or the red photoluminescent material is a red light quantum dot material. The photoluminescent LED display device of claim 18, wherein the photoluminescent layer structure further comprises a third light emitting portion, the third light emitting portion comprising a blue photoluminescent material, the first light emitting portion facing the The LED array is disposed on the third light emitting portion, and the third light emitting portion covers the red light penetrating region, the green light penetrating region and the blue light penetrating region simultaneously along the normal direction. The photoluminescent LED display device of claim 20, wherein the blue photoluminescent material is a blue quantum dot material. The photoluminescent LED display device of claim 3, wherein the red region comprises a first high pass filter, the green region comprising a second high pass filter; wherein the photoluminescent layer structure further comprises a light transmitting portion, the first photoluminescent material is a green photoluminescent material, and the second photoluminescent material is a red photoluminescent material, and the light transmitting portion covers the blue along the normal direction a color region; wherein the display panel further comprises a plurality of light reflecting structures, each of the light reflecting structures covering the red region, the green region and the blue region along the normal direction One side of one. The photoluminescent LED display device of claim 22, wherein the photoluminescent layer structure further comprises a third light emitting portion, the third light emitting portion comprising a blue photoluminescent material, the first light emitting portion facing the The LED array is disposed on the third light emitting portion, and the third light emitting portion covers the red region, the green region and the blue region simultaneously along the normal direction. A photoluminescent LED display device comprising: an array of light emitting diodes for providing a blue light, a deep blue light or an ultraviolet light; and a display panel disposed on one side of the array of light emitting diodes The display panel includes a transparent substrate and a photoluminescent layer structure for supporting the photoluminescent layer structure. The transparent substrate includes an adjacent red light penetrating region and a green layer. a light-transmitting layer and a blue light-transmitting layer, the photo-emitting layer structure is disposed on the light-transmitting substrate toward the light-emitting diode array, and the photo-emitting layer structure comprises a first light-emitting portion and a light-transmitting portion The first light-emitting portion covers the red light-transmitting region and the green light-transmitting region along a normal direction of the light-transmitting substrate, and the light-transmitting portion is adjacent to the first light-emitting portion, and along the Covering the blue region with the normal direction; wherein the first light emitting portion comprises a mixed red photoluminescent material and a green photoluminescent material, or comprises a yellow photoluminescent material, and the first The light emitting portion further comprises a polymer material. A photoluminescence LED display device comprising: An LED array for providing a blue light, a deep blue light or an ultraviolet light, and a display panel disposed on one side of the LED array, the display panel comprising a transparent substrate and a photoluminescent layer structure for supporting the photoluminescent layer structure; wherein the transparent substrate comprises an adjacent red light penetrating region, a green light penetrating region and a blue light penetrating region The photoluminescent layer structure is disposed on the light-transmitting substrate toward the light-emitting diode array, and the photoluminescent layer structure includes a first light-emitting portion along one of the light-transmitting substrates. a normal direction covering the red region, the green region, and the blue region, and the first light emitting portion includes a mixed red photoluminescent material, a green photoluminescent material, and a blue photoluminescent material, or The first light emitting part further comprises a polymer material, or comprises a yellow photoluminescent material and a green photoluminescent material, and the first light emitting part further comprises a polymer material. A method for manufacturing a photoluminescent LED display device, comprising: providing an array of light emitting diodes; and forming a display panel and disposed on one side of the array of light emitting diodes or directly on one of the arrays of light diodes Forming the display panel on the side; wherein the LED array is configured to provide a blue light, a deep blue light, or an ultraviolet light; wherein the forming of the display panel comprises: providing a transparent substrate and forming a photoluminescent layer structure; The transparent substrate is configured to support the photoluminescent layer structure and includes an adjacent red light penetrating region, a green light penetrating region and a blue light penetrating region; the photoluminescent layer structure includes a first light emitting layer And a second light emitting portion along the first light emitting portion The first light emitting portion is disposed on the first light emitting portion toward the light emitting diode array along a normal direction of the substrate, and covers the red light transmitting region and the green light transmitting region, and along the normal line The first light emitting portion includes a first photoluminescent material and a first polymer material, and the second light emitting portion includes a second photoluminescent material and a second polymer material, and the peak wavelength of a light generated by the second photoluminescence material via photoluminescence is greater than the peak wavelength of another light generated by the first photoluminescence material via photoluminescence. The method of manufacturing the photoluminescent LED display device of claim 26, wherein the forming of the display panel further comprises: forming a filter layer structure; wherein the filter layer structure comprises an adjacent red region, a a green area and a blue area, the red area being arranged to allow passage of a red light, the green area being arranged to allow passage of a green light, and the blue area being arranged to allow passage of a blue light; the photoluminescent layer structure The light emitting diode array is disposed on the filter layer structure, and the red region, the green region and the blue region of the filter layer respectively cover the red light penetrating region, the green light penetrating region and The blue light penetrating zone. The method of fabricating a photoluminescent LED display device according to claim 26, wherein the forming the photoluminescent layer structure further comprises: depositing the first photoluminescent material and the first polymer material in The red light penetrating region of the light transmissive substrate and the green light penetrating region. The method of manufacturing a photoluminescent LED display device according to claim 28, wherein when the photoluminescent layer structure is formed, the method further comprises: depositing the first photoluminescent material and the first A polymer material is on the light transmissive substrate, and then the second photoluminescent material and the second polymer material are deposited. The method of manufacturing the photoluminescent LED display device of claim 26, wherein the forming the photoluminescent layer structure further comprises: depositing the second photoluminescent material and the second polymer material The second photoluminescent material and the second polymer material correspond to the red light penetrating region and the green light penetrating region of the light transmitting substrate, or only corresponding to The red light penetrates the area. The method of manufacturing the photoluminescent LED display device of claim 30, wherein the forming the photoluminescent layer structure further comprises: depositing the first photoluminescent material and the first polymer material in the light emitting a polar body array, the second photoluminescent material, and the second polymer material. The method of manufacturing a photoluminescent LED display device according to claim 27, wherein when the filter layer structure is formed, the method further comprises: forming a red filter on the red region to form a green filter. On the green zone, a blue filter is formed on the blue zone. The method of fabricating a photoluminescence LED display device according to claim 26 or 27, wherein, when the photoluminescent layer structure is formed, the photoluminescent layer structure is further covered by the blue light-emitting region. The method of manufacturing the photoluminescent LED display device of claim 26 or 27, wherein the LED array comprises a plurality of light emitting diodes and a substrate structure, and the light emitting diodes are disposed on the substrate structure And electrically connected to the substrate structure. The method of fabricating a photoluminescent LED display device according to claim 34, further comprising forming a flat layer structure between and/or over the light emitting diodes. The method of fabricating a photoluminescence LED display device according to claim 34, further comprising forming a reflective structure between the light emitting diodes.