Carmine glass lamp panel, backlight system and manufacturing method

Abstract

The invention discloses a magenta glass lamp panel. A first lamp panel assembly of the magenta glass lamp panel comprises a glass cover plate and a reflector; the second lamp panel assembly comprises a glass-based circuit board, blue light LEDs, packaging bodies wrapping the blue light LEDs and sealing structures arranged around the packaging bodies. The reflector is embedded into the packaging body and is opposite to the blue light LED; and the glass cover plate and the glass-based circuit board are fixed through the packaging body and the sealing structure. Fluoride fluorescent powder with relatively high luminous efficiency is adopted to form a packaging body, directly covers the surface of a blue light LED and is very close to the blue light LED, so that the efficiency of directly exciting red powder by blue light to generate red light is very high, and the luminous efficiency of the magenta glass lamp panel is greatly improved; and the blue light LED and the packaging body are sealed in the cavity formed by the glass-based circuit board, the glass cover plate and the sealing structure, so that external water vapor is difficult to enter the cavity, and the service life of the fluoride fluorescent powder is greatly prolonged. The invention further discloses a manufacturing method of the magenta glass lamp panel, a backlight system and a manufacturing method of the backlight system.

Description

Technical Field

[0001] The present invention relates to the technical field of liquid crystal display backlight system, and in particular to a magenta glass lamp panel with high optical efficiency and long service life, a backlight system and a manufacturing method. Background Art

[0002] A backlight system is required in a liquid crystal display (Light Emitting Diode, LCD) to provide a uniform surface light source. In order to improve the color gamut, a blue light panel plus a QD film (Quantum Dot Film) is generally used. The function of the QD film is: when exposed to blue light, the green QD material in the QD film absorbs the blue light and converts it into green light, and the red QD material absorbs the blue light and green light and converts it into red light. The green and red light generated by the QD film are mixed with the unabsorbed blue light to form white light, which becomes the backlight source of the LCD.

[0003] See also Figure 1 As shown, the LCD backlight system 1' in the prior art generally includes: a blue light LED lamp panel 10', a diffusion plate 20', a QD film 30', a brightness enhancement film 40', etc., which are arranged in sequence. When the blue light emitted by the LED lamp 11' irradiates the QD film 30', only part of the blue light will be converted into green light and red light, and the remaining blue light will continue to propagate upward after leaving the QD film 30', and will be reflected and diffused to the QD film 30' by the brightness enhancement film 40' and other films for a second conversion. The optical excitation efficiency of the existing QD film 30' is much lower than that of the white light LED, partly because the luminous efficiency of the QD material itself is low. Another important factor is the problem of the red light QD material. The red light QD material can not only absorb blue light to produce red light, but also absorb green light to produce red light. Therefore, when the green QD material absorbs blue light to produce green light, part of the green light will be absorbed by the red QD material to produce red light, which causes the green light to be lost and the efficiency of the green light produced will be very low; at the same time, the efficiency of the green light being absorbed by the red QD material to produce red light is also very low. As a result, the efficiency of both green and red light will be reduced, thereby reducing the overall luminous efficiency. Therefore, the problem of the red light QD material absorbing green light needs to be solved in order to improve the luminous efficiency of the QD film 30'.

[0004] Another high color gamut solution is to use fluoride-containing red phosphor. 4+ The fluoride red powder with doped K2SiF6 structure has an emission peak wavelength of 630 nanometers and a half-peak width of less than 20nm. It can provide a very pure red color and is widely used in many high-color gamut white light LED products. However, the fluoride red powder in white light LED devices faces a lifespan problem. When the fluoride material comes into contact with water vapor, it will hydrolyze to form a black manganese dioxide deposit, such as Figure 2As shown. Therefore, blocking water vapor has become a product requirement for fluoride phosphors. However, the packaging glue used in existing LED devices cannot meet the product's long-term water vapor blocking requirements, resulting in a short service life.

[0005] Therefore, it is necessary to provide a magenta glass lamp panel, a backlight system and a manufacturing method with high optical efficiency and long service life to solve the above problems. Summary of the invention

[0006] An object of the present invention is to provide a magenta glass lamp panel with high optical efficiency and long service life.

[0007] Another object of the present invention is to provide a backlight system with high optical efficiency and long service life.

[0008] Another object of the present invention is to provide a method for manufacturing a magenta glass lamp panel with high optical efficiency and long service life.

[0009] Another object of the present invention is to provide a method for manufacturing a backlight system with high optical efficiency and long service life.

[0010] To achieve the above-mentioned purpose, the technical solution of the present invention is as follows: a magenta glass lamp board is provided, which includes a first lamp board component and a second lamp board component; wherein the first lamp board component includes a glass cover plate and a reflector, and the reflector is fixed to the glass cover plate and arranged in an array; the second lamp board component includes a glass-based circuit board, a blue light LED, a packaging body and a sealing structure, the blue light LED is arranged on the glass-based circuit board and arranged in an array, the packaging body wraps the blue light LED and is fixed to the glass-based circuit board, the packaging body contains fluoride phosphor, the sealing structure is a mesh structure and is arranged around each of the packaging bodies, and the sealing structure is fixed to the glass-based circuit board; the glass-based circuit board is arranged below the glass cover plate and is fixedly connected through the packaging body and the sealing structure, and the reflector is embedded in the packaging body and faces the blue light LED.

[0011] Preferably, the outer diameter of the packaging body is greater than the outer diameter of the reflector, and the height of the packaging body is greater than the height of the reflector, so as to ensure that the reflector can be embedded in the packaging body.

[0012] Preferably, the height of the packaging body is greater than or equal to the height of the sealing structure, so as to ensure that when the glass cover plate is covered on the glass-based circuit board, no gap is formed between the glass cover plate and the packaging body.

[0013] Preferably, the bottom of the package body connected to the glass-based circuit board is a circular structure and has a first diameter, and the maximum height of the package body is the first height; the bottom of the reflector connected to the glass cover plate is a circular structure and has a second diameter, and the maximum height of the reflector is the second height; the first diameter is greater than the second diameter, and the first height is greater than the second height, so as to ensure that the reflector can be embedded in the package body.

[0014] Preferably, the top of the reflector away from the glass cover plate has a spherical structure and protrudes toward the glass-based circuit board. On the one hand, it can reflect the blue light in the normal direction back into the package containing fluoride phosphors to excite the red powder again to emit red light, thereby improving the luminous efficiency of the red light. On the other hand, the reflector can also diffuse the blue light and red light generated in the package to the surroundings, thereby improving the luminous uniformity of the red glass lamp board.

[0015] Preferably, the outer diameter of the reflector is 0.8-1.2 mm, and the maximum height of the reflector is 0.15-0.25 mm.

[0016] Correspondingly, the present invention also provides a backlight system, which includes the magenta glass lamp panel as described above and a green quantum dot film, a first optical film, and a second optical film; wherein the green quantum dot film is arranged above the glass cover plate to convert blue light into white light; the first optical film is arranged above the green quantum dot film to improve the brightness and uniformity of the backlight system; the second optical film is arranged above the first optical film to improve the brightness of the backlight system.

[0017] Correspondingly, the present invention also provides a method for manufacturing a magenta glass lamp panel, which comprises the following steps:

[0018] (11) providing a glass cover plate, applying glue on a surface of the glass cover plate to form convex spheres arranged in an array, and baking and curing the convex spheres to obtain a reflector;

[0019] (12) providing a glass-based circuit board having blue LEDs arranged in an array, dispensing glue on the glass-based circuit board to form a sealing structure with a mesh structure, wherein the sealing structure is arranged around each of the blue LEDs;

[0020] (13) applying a packaging material containing fluoride phosphor to the blue LED to obtain a packaging body, wherein the packaging body encapsulates the blue LED and has an outer diameter greater than the outer diameter of the reflector and a height greater than the height of the reflector;

[0021] (14) The glass cover is placed on the glass-based circuit board, and the reflector is aligned with the blue LED and embedded in the package body;

[0022] (15) The packaging body and the sealing structure between the glass cover plate and the glass-based circuit board are baked and cured to fix the shapes of the packaging body and the sealing structure and to fix the glass cover plate and the glass-based circuit board to obtain a magenta glass lamp panel.

[0023] Preferably, in the method for manufacturing the magenta glass lamp panel of the present invention, the outer diameter of the packaging body is greater than the outer diameter of the reflector, and the height of the packaging body is greater than the height of the reflector, so as to ensure that the reflector can be embedded in the packaging body.

[0024] Preferably, in the method for manufacturing the magenta glass lamp panel of the present invention, the height of the packaging body is greater than or equal to the height of the sealing structure to ensure that when the glass cover plate is covered on the glass-based circuit board, no gap is formed between the glass cover plate and the packaging body.

[0025] Preferably, in the manufacturing method of the magenta glass lamp panel of the present invention, the bottom of the packaging body connected to the glass-based circuit board is a circular structure and has a first diameter, and the maximum height of the packaging body is the first height; the bottom of the reflector connected to the glass cover plate is a circular structure and has a second diameter, and the maximum height of the reflector is the second height; the first diameter is greater than the second diameter, and the first height is greater than the second height; to ensure that the reflector can be embedded in the packaging body.

[0026] Preferably, in the manufacturing method of the magenta glass lamp board of the present invention, the top of the reflector away from the glass cover plate is in a spherical structure and protrudes toward the glass-based circuit board. On the one hand, it can reflect the blue light in the normal direction back into the package containing fluoride phosphor to excite the red powder again to emit red light, thereby improving the luminous efficiency of the red light. On the other hand, the reflector can also diffuse the blue light and red light generated in the package to the surroundings, thereby improving the luminous uniformity of the red glass lamp board.

[0027] Preferably, in the method for manufacturing a magenta glass lamp panel of the present invention, the outer diameter of the reflector is 0.8-1.2 mm, and the maximum height of the reflector is 0.15-0.25 mm.

[0028] Correspondingly, the present invention also provides a backlight system manufacturing method, which includes the above-mentioned magenta glass lamp panel manufacturing method; and further includes:

[0029] (21) providing a green quantum dot film, and placing the green quantum dot film above the glass cover plate;

[0030] (22) providing a first optical film, and disposing the first optical film above the green quantum dot film;

[0031] (23) A second optical film is provided, and the second optical film is disposed on the first optical film.

[0032] Compared with the prior art, the magenta glass lamp board of the present invention firstly uses a packaging material containing fluoride phosphor to encapsulate the blue light LED to form a package body. Since the luminous efficiency of the fluoride phosphor is greatly improved compared with the existing QD material, the overall luminous efficiency of the magenta glass lamp board is greatly improved; secondly, the fluoride phosphor directly covers the surface of the blue light LED, and the fluoride phosphor is very close to the blue light LED, so that the efficiency of the blue light directly exciting the red powder to produce red light is very high, further improving the luminous efficiency of the magenta glass lamp board; further, the reflector formed on the glass cover is embedded in the package body and directly faces the blue light LED, so the blue light in the normal direction can be reflected back to the package body containing fluoride phosphor to once again excite the red powder to emit red light, and further improve the luminous efficiency of the red light. As a result, the overall luminous efficiency of the magenta glass lamp board of the present invention is greatly improved. In addition, the reflector can also diffuse the blue light and red light generated in the package body to the surroundings, thereby improving the luminous uniformity of the lamp board. Finally, the blue LED and the package are sealed in a cavity formed by the glass-based circuit board below, the glass cover plate above, and a mesh-shaped sealing structure. Since the glass plate has a strong water vapor barrier effect, it is difficult for external water vapor to enter the interior of the cavity, and the fluoride phosphor cannot come into contact with water vapor, so its lifespan is greatly improved, thereby extending the service life of the magenta glass lamp board.

[0033] Correspondingly, the method for manufacturing the magenta glass lamp panel provided by the present invention also has the above-mentioned technical effects.

[0034] Correspondingly, the backlight system having the magenta glass lamp panel of the present invention also has the above-mentioned technical effects.

[0035] Furthermore, since the backlight system of the present application is provided with a green quantum dot film to cooperate with the magenta glass light board, when the magenta light (mixed with blue light and red light) emitted by the magenta glass light board enters the green quantum dot film, first, the blue light will excite the green quantum dot material to produce green light; secondly, since the green light produced by the green quantum dot film cannot excite the fluoride red powder, the green light produced by the green quantum dot film will not be absorbed by the fluoride red powder, and the green light is not lost, thereby improving the luminous efficiency of the green quantum dot film; furthermore, red light cannot excite the green quantum dot material, therefore, the red light produced by the blue light directly exciting the red powder directly leaves the green quantum dot film and continues to propagate upwards, and since the overall luminous efficiency of the magenta glass light board is improved, the luminous efficiency of the red light is also higher. Compared with the prior art, the backlight system of the present application avoids the conversion step of the red QD material absorbing green light to produce red light, thereby improving the luminous efficiency of both green and red light, thereby improving the luminous efficiency of the green quantum dot film as a whole. In summary, since the luminous efficiency of the magenta glass light panel and the green quantum dot film are improved, the luminous efficiency of the entire backlight system is greatly improved, meeting the high color gamut requirements.

[0036] Correspondingly, the backlight system manufacturing method of the present invention also has the above technical effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a schematic diagram of the structure of a backlight system in the prior art.

[0038] Figure 2 This is a schematic diagram of the hydrolysis of fluoride red powder used in existing backlight systems.

[0039] Figure 3 It is a structural schematic diagram of a magenta glass lamp panel of the present invention.

[0040] Figure 4 It is a schematic diagram of the state of forming a reflector on a glass cover plate.

[0041] Figure 5 yes Figure 4 Side view of.

[0042] Figure 6 It is a schematic diagram of the state of the molding sealing structure on the glass-based circuit board.

[0043] Figure 7 is Figure 6 Schematic diagram of the state of the package embryo formed on the glass-based circuit board.

[0044] Figure 8 yes Figure 7 Side view of.

[0045] Fig. 9 Yes Figure 5 The glass cover is located on Figure 8 Schematic diagram of the status of the glass-based circuit board.

[0046] Fig.10 It is a schematic structural diagram of the backlight system of the present invention.

[0047] Fig.11 This is a lighting actual picture of the 27-inch magenta glass lamp panel of the present invention. DETAILED DESCRIPTION

[0048] The embodiments of the present invention are now described with reference to the accompanying drawings, in which similar element numbers represent similar elements. It should be noted that the orientation descriptions involved in the present invention, such as the orientations or positional relationships indicated by up, down, left, right, front, and back, are all based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the technical solutions of the present application or / and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. The first, second, etc. described are only used to distinguish technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0049] See first Figure 3 As shown, in one embodiment of the present invention, a magenta glass lamp panel 100 is provided, which includes a first lamp panel assembly 110 and a second lamp panel assembly 120 arranged opposite to each other up and down. The first lamp panel assembly 110 includes a glass cover plate 111 and a reflector 112, and the reflector 112 is fixed to one side of the glass cover plate 111 and arranged in an array. The second lamp panel assembly 120 includes a glass-based circuit board 121, a blue LED 122, a package 123 and a sealing structure 124, and the blue LED 122 is arranged on one side of the glass-based circuit board 121 and arranged in an array. Specifically, the arrangement of the blue LED 122 corresponds to the arrangement of the reflector 112 one by one. The package 123 wraps the blue LED 122 and is fixed to the glass-based circuit board 121, and the package 123 contains fluoride phosphor. The sealing structure 124 is a mesh structure and is arranged around each packaging body 123. The sealing structure 124 is fixed to the glass-based circuit board 121. In addition, the glass cover plate 111 is arranged above the glass-based circuit board 121. Each reflector 112 is embedded in each packaging body 123 in a one-to-one correspondence and faces the blue light LED 122. The glass cover plate 111 and the glass-based circuit board 121 are fixedly connected through the sealing structure 124.

[0050] Continue to view Figure 3As shown in FIG. 1 , in one embodiment of the present invention, the top of the reflector 112 away from the glass cover 111 is a spherical structure, and the spherical structure of the reflector 112 protrudes toward the glass-based circuit board 121. This structural arrangement of the reflector 112 can, on the one hand, reflect the blue light in the normal direction back to the package 123 containing the fluoride phosphor. Figure 3 As shown by the middle arrow B, the magenta powder is stimulated again to emit red light, thereby improving the luminous efficiency of the red light. On the other hand, the reflector 112 can also diffuse the blue light and red light generated in the package 123 to the surroundings, thereby improving the luminous uniformity of the magenta glass lamp panel 100.

[0051] Combine the following Figure 3-5 , Figure 7-8 As shown, in one embodiment of the present invention, the shapes of other parts except the top of the reflector 112 are not specifically limited. At the same time, the shape of the package 123 is also not specifically limited. However, the outer diameter of the package 123 needs to be greater than the maximum outer diameter of the reflector 112, and the height of the package 123 also needs to be greater than the maximum height of the reflector 112 to ensure that the reflector 112 can be embedded in the package 123.

[0052] Continue to combine Figure 3-5 , Figure 7-8 As shown in FIG. 1 , in a specific embodiment, the reflector 112 is in a convex spherical structure as a whole. This structural setting makes the molding of the reflector 112 simpler and more convenient. Therefore, the bottom of the reflector 112 connected to the glass cover 111 is in a circular structure and has a second diameter d2, as shown in FIG. Figure 3 , Figure 5 In other words, the projection of the reflector 112 on the glass cover 111 is a circular structure and has a second diameter d2, as shown in FIG. Figure 4 At the same time, the reflector 112 has a second height h2, as shown in FIG. Figure 5 Correspondingly, the bottom of the package body 123 connected to the glass-based circuit board 121 is also preferably circular and has a first diameter d1. At the same time, the package body 123 has a first height h1, as shown in FIG. Figure 8 In this specific embodiment, the first diameter d1 is greater than the second diameter d2, and the first height h1 is greater than the second height h2. Thus, the reflector 112 can be completely embedded in the package 123, as shown in FIG. Figure 3 shown.

[0053] Combine the following Figure 4-Figure 5As shown, in a specific embodiment, the second diameter d2 of the reflector 112 is 0.8-1.2 mm, and the maximum height of the reflector 112 is 0.15-0.25 mm. When the reflector 112 is specifically formed, a convex sphere can be obtained by directly applying white glue on the glass cover plate 111, and the contact surface formed by the convex sphere on the surface of the glass cover plate 111 is circular. After the glue is applied, baking and curing are immediately performed to fix the shape of the convex sphere, thereby obtaining a reflector 112 with a convex spherical structure. The reflector 112 is directly formed on the glass cover plate 111 by glue application and curing, so that the forming of the reflector 112 is simple and the production efficiency is improved.

[0054] It is understandable that the size and material of the reflector 112 are not limited to those in this specific implementation, and it is also feasible to use other optical adhesives to form the reflector 112.

[0055] Combine the following Figure 3 , Figure 7-Figure 8 As shown, in one embodiment of the present invention, the package body 123 is preferably formed by using a packaging material formed by fully mixing fluoride phosphor and silica gel. Specifically, the packaging material is applied to the surface of each blue light LED 122 by dispensing, thereby obtaining a package body embryo 123', such as Figure 7-Figure 8 As shown. The package body 123' is in a convex spherical shape, and when dispensing glue, ensure that the diameter of the package body 123' is greater than the second diameter d2 of the reflector 112, and at the same time make the height of the package body 123' greater than the second height h2 of the reflector 112, so that the reflector 112 can be embedded, see the details below. More preferably, the height of the package body 123' is greater than or equal to the height of the sealing structure 124, so that when the glass cover plate 111 is arranged on the glass-based circuit board 121, no gap is formed between the glass cover plate 111 and the package body 123', see the details below. In this embodiment, the height of the package body 123' is preferably equal to the height of the sealing structure 124, as Figure 8 Furthermore, the package embryo 123 ′ is not cured before assembly, so as to facilitate assembly with the first light panel assembly 110 .

[0056] It is understandable that the packaging material may be formed by fully mixing fluoride phosphor with other optical adhesives, which is not specifically limited in the present invention.

[0057] Combine the following Figure 6-7As shown, in one embodiment of the present invention, the sealing structure 124 includes a first wall 1241 and a second wall 1242, a plurality of first walls 1241 are arranged in parallel along the transverse direction of the glass-based circuit board 121, and a plurality of second walls 1242 are arranged in parallel along the longitudinal direction of the glass-based circuit board 121. A plurality of cavities 124a are formed by the perpendicular first walls 1241 and second walls 1242, each cavity 124a preferably has a square structure, and the blue LED 122 is located in the middle of each cavity 124a, as shown in FIG. Figure 6 As shown. Of course, each cavity 124a can also be arranged in a rectangular shape. The vertical arrangement of the first wall 1241 and the second wall 1242 makes the molding of the first wall 1241 and the second wall 1242 simpler and faster. It can be understood that the first wall 1241 and the second wall 1242 can also be arranged at other angles instead of being vertical, so that the cavity 124a has other shapes, such as a rhombus. The sealing structure 124 can also be formed around the blue light LED 122 to form a circular structure, etc. In the present invention, the shape of the cavity 124a is not specifically limited.

[0058] In a specific implementation, white glue is used to form the sealing structure 124. Specifically, the first wall 1241 and the second wall 1242 are formed on the glass-based circuit board 121 by dispensing glue, thereby forming the sealing structure 124, so that the molding of the sealing structure 124 is simpler and faster. In addition, the sealing structure 124 is not cured before assembly, so as to facilitate assembly with the first light panel assembly 110.

[0059] Of course, the sealing structure 124 may also be formed by other materials and other methods, and then fixed on the glass-based circuit board 121 .

[0060] Combine the following Figure 3 , Fig. 9 As shown, when assembling the first lamp board assembly 110 and the second lamp board assembly 120, the first lamp board assembly 110 is buckled on the top of the second lamp board assembly 120, that is, the reflector 112 on the glass cover plate 111 is oriented toward the package body 123', and the position of the glass cover plate 111 is adjusted so that each reflector 112 faces each blue light LED 122, as shown in FIG. Fig. 9 Then, the glass cover plate 111 is pressed down. Since the package body 123' and the sealing structure 124 have not yet solidified, the reflector 112 can be embedded in the package body 123', so that the package body 123' receives the reflector 112 to form the package 123. In other words, the middle part of the package body 123' is squeezed by the reflector 112 and deformed to obtain the package 123. At this time, the glass cover plate 111 is supported above the package 123 and the sealing structure 124, as shown in FIG. Figure 3 shown.

[0061] Then, the encapsulation body 123 and the sealing structure 124 between the glass cover plate 111 and the glass-based circuit board 121 are baked and cured, so that the shape of the encapsulation body 123 receiving the reflector 112 in the middle is fixed, and the shape of the sealing structure 124 is fixed. After curing, the glass cover plate 111 and the glass-based circuit board 121 are sealed and fixedly connected through the encapsulation body 123 and the sealing structure 124, so as to obtain the magenta glass lamp panel 100, as shown in FIG. Figure 3 The package 123 , the blue LED 122 packaged therein, and the reflector 112 embedded therein are sealed in a cavity 124 a formed by the glass cover 111 , the glass-based circuit board 121 , and the sealing structure 124 .

[0062] Combine the following Figure 3 , Fig.11 As shown, when the magenta glass lamp panel 100 of the present invention is working, the blue light emitted by the blue LED 122 enters the package 123, and the blue light directly excites the fluoride red powder to generate red light, as shown in FIG. Figure 3 As shown by arrow A, firstly, since the luminous efficiency of fluoride phosphor is greatly improved compared with the existing QD material, the luminous efficiency of the magenta glass lamp panel 100 is improved as a whole. Furthermore, the package 123 composed of fluoride phosphor directly covers the outside of the blue light LED 122, so that the fluoride phosphor is very close to the blue light LED 122, so that the efficiency of blue light directly exciting the red phosphor to produce red light is very high, further improving the luminous efficiency of the magenta glass lamp panel 100. In addition, the reflector 112 is hemispherical and embedded in the package 123, and the convex spherical surface of the reflector 112 faces the blue light LED 122. Therefore, the blue light in the normal direction can be reflected back to the package 123 containing the fluoride phosphor, as shown in FIG. Figure 3 As shown by arrow B, the magenta is stimulated again to emit red light, further improving the luminous efficiency of the red light. In summary, the luminous efficiency of the magenta glass lamp panel 100 of the present application is greatly improved compared with the backlight system in the prior art, and can meet the high color gamut requirements of the backlight system. Fig.11 Shown is a lighting picture of a 27-inch magenta glass lamp panel 100 in this application.

[0063] Combine the following Figure 3 , Fig.10 As shown, in another embodiment of the present invention, a backlight system 1 is also provided. The backlight system 1 comprises a magenta glass lamp panel 100, a green quantum dot film 200, a first optical film 300 and a second optical film 400 arranged in sequence. The structure of the magenta glass lamp panel 100 is as described above and will not be described again.

[0064] See also Fig.10 As shown, in this embodiment, the green quantum dot (Quantum Dot) film 200 is arranged above the glass cover plate 111 to convert blue light into white light. Specifically, when the magenta light (blue light and red light are mixed, and red light is produced by blue light directly exciting fluoride red powder) emitted by the magenta glass lamp plate 100 enters the green QD film 200, the blue light will directly excite the green quantum dot material to produce green light. At the same time, since the green light generated by the green QD film 200 cannot excite the fluoride red powder, the green light generated by the green QD film 200 will not be absorbed by the fluoride red powder, and the green light will not be lost. In other words, the present application adopts a method of combining fluoride red powder with the green QD film 200. Compared with the prior art, there is no conversion step in which the red QD material absorbs green light to produce red light, thereby improving the luminous efficiency of both green light and red light, thereby improving the luminous efficiency of the green QD film 200 as a whole. In addition, since red light cannot excite the green quantum dot (QD) material, the red light emitted by the magenta glass light panel 100 directly leaves the green QD film 200 and continues to propagate upward. The green light and red light generated above are mixed with the unabsorbed blue light to form white light, which becomes the backlight source of the backlight system 1. In this embodiment, the white light is generated by combining the magenta glass light panel 100 with the green QD film 200. Since the luminous efficiency of the magenta glass light panel 100 and the green quantum dot film 200 is improved, the luminous efficiency of the entire backlight system 1 is greatly improved, thereby meeting the high color gamut requirements.

[0065] Continue to view Fig.10 As shown, in this embodiment, the first optical film 300 is a brightness enhancement film, which is a new type of high-performance optical film with a microscopic prism array structure on its surface. The microprism structure is used to converge light, so that the scattered light is concentrated to the front, thereby improving the overall brightness and uniformity of the backlight system 1.

[0066] In this embodiment, the second optical film 400 is a double brightness enhancement film (Double Brightness Enhancement Film, DBEF). DBEF is a thin film reflective polarizer that uses advanced microsphere combustion technology, so it can efficiently convert reflected light and transmitted light, thereby improving the brightness of the entire backlight system 1.

[0067] It is understandable that the first optical film 300 and the second optical film 400 may also be made of other optical films.

[0068] Combine the following Figure 3-7As shown, in another embodiment of the present invention, a method for manufacturing a magenta glass lamp panel is provided, which is used to manufacture the magenta glass lamp panel 100 as described above. The method comprises the following steps:

[0069] S11, providing a glass cover plate 111, applying glue on a surface of the glass cover plate 111 to form convex spheres arranged in an array, and baking and curing the convex spheres to obtain a reflector 112;

[0070] See also Figure 4-5 As shown, in one embodiment, white glue is preferably used to mold the reflector 112. Specifically, according to the arrangement of the blue LEDs 122 set on the glass-based circuit board 121, glue is dispensed on one side of the glass cover plate 111 to obtain convex spheres, and the multiple convex spheres on the glass cover plate 111 are arranged in an array, and the arrangement of each convex sphere must correspond to the arrangement of the blue LEDs 122 one by one.

[0071] In a specific embodiment, the bottom of the convex sphere obtained after dispensing is rounded in contact with the glass cover plate 111, so that the convex sphere has a second diameter d2, and the range of the second diameter d2 is preferably 0.8-1.2 mm. At the same time, the maximum height of the convex sphere is the second height h2, and the second height h2 is preferably 0.15-0.25 mm.

[0072] After the dispensing is completed, the convex sphere is immediately baked and cured to obtain the reflector 112. Therefore, the reflector 112 in this embodiment is a hemispherical structure, and the second diameter d2 of the reflector 112 is preferably in the range of 0.8-1.2 mm, and the maximum height h2 of the reflector 112 is preferably 0.15-0.25 mm.

[0073] It is understandable that the size and material of the reflector 112 are not limited to those in this specific implementation.

[0074] S12, providing a glass-based circuit board 121 having blue LEDs 122 arranged in an array, dispensing glue on the glass-based circuit board 121 to form a sealing structure 124 with a mesh structure, wherein the sealing structure 124 is arranged around each of the blue LEDs 122;

[0075] See also Figure 6 As shown, in the present invention, the structure of the glass-based circuit board 121 and the method of arranging the blue light LED 122 thereon are conventional methods in the art and will not be described in detail.

[0076] In one embodiment, the sealing structure 124 is formed by white glue. Specifically, the first wall 1241 and the second wall 1242 are formed on the glass-based circuit board 121 by dispensing glue, and multiple first walls 1241 are arranged in parallel along the horizontal direction of the glass-based circuit board 121, and multiple second walls 1242 are arranged in parallel along the longitudinal direction of the glass-based circuit board 121. The vertical first walls 1241 and second walls 1242 surround multiple cavities 124a, and each cavity 124a is preferably in a square structure, and each cavity 124a is provided with a blue light LED 122, that is, the vertical first walls 1241 and second walls 1242 are arranged around each blue light LED 122. In this embodiment, the vertical arrangement of the first wall 1241 and the second wall 1242 makes the molding of the first wall 1241 and the second wall 1242 simpler and faster. After the dispensing is completed, the sealing structure 124 is not baked and cured yet, so as to be assembled with the first lamp panel assembly 110, as will be described later.

[0077] It is understandable that the first wall 1241 and the second wall 1242 may be arranged at other angles instead of being perpendicular, so that the cavity 124a may be in other shapes, such as a rhombus. Of course, the sealing structure 124 may be formed in a circular structure by directly dispensing glue around each blue LED 122. The shape of the cavity 124a is not specifically limited in the present invention.

[0078] S13, applying a packaging material containing fluoride phosphor on the blue LED 122 to obtain a packaging body embryo 123', wherein the packaging body embryo 123' wraps the blue LED 122 and has an outer diameter greater than the outer diameter of the reflector 112 and a height greater than the height of the reflector 112;

[0079] See also Figure 7-8 As shown, in one embodiment, the package body 123 is preferably formed by a packaging material formed by fully mixing fluoride phosphor and silica gel. Specifically, after the fluoride phosphor and silica gel are fully mixed, the packaging material is applied to the surface of each blue LED 122 by dispensing, thereby obtaining a package body 123', wherein the package body 123' wraps the blue LED 122, and the package body 123' is in a convex spherical shape. In addition, the diameter of the bottom of the package body 123' connected to the glass-based circuit board 121 is greater than the second diameter d2 of the reflector 112, and the height of the package body 123' is greater than the second height h2 of the reflector 112, so that the reflector 112 can be embedded, as described later.

[0080] In this embodiment, the height of the package body 123' is greater than or equal to the height of the sealing structure 124. More preferably, the height of the package body 123' is preferably equal to the height of the sealing structure 124. Figure 8 As shown, when the glass cover plate 111 is disposed on the glass-based circuit board 121, no gap is formed between the glass cover plate 111 and the package body 123', as will be described later.

[0081] After the dispensing is completed, the package embryo 123 ′ is not baked and cured yet, so as to facilitate assembly with the first light panel assembly 110 , as will be described later.

[0082] It is understandable that the packaging material may be formed by fully mixing the fluoride phosphor with other optical adhesives, which is not specifically limited in the present invention.

[0083] S14, covering the glass cover plate 111 on the glass-based circuit board 121, and making the reflector 112 face the blue light LED 122 and embedding them into the package embryo 123';

[0084] Combine the following Figure 3 , Fig. 9 As shown, in one embodiment, when the glass cover plate 111 obtained in the above step S11 is covered on the glass-based circuit board 121, the reflector 112 is directed toward the package embryo 123', and the position of the glass cover plate 111 is adjusted so that each reflector 112 faces each blue light LED 122, and then the glass cover plate 111 is pressed down. Since the package embryo 123' and the sealing structure 124 have not yet been solidified, the reflector 112 can be embedded in the package embryo 123', as shown in FIG. Figure 3 As shown, the package body embryo 123' receives the reflector 112 to form the package body 123, that is, the middle part of the package body embryo 123' is squeezed by the reflector 112 and deformed to obtain the package body 123. At this time, the glass cover plate 111 is supported on the package body 123 and the sealing structure 124, as shown in FIG. Figure 3 shown.

[0085] S15. Bake and solidify the encapsulation body 123 and the sealing structure 124 between the glass cover plate 111 and the glass-based circuit board 121 to fix the shapes of the encapsulation body 123 and the sealing structure 124 and fix them to connect the glass cover plate 111 and the glass-based circuit board 121, thereby obtaining a magenta glass lamp panel 100.

[0086] See also Figure 3As shown, the encapsulation body 123 and the sealing structure 124 between the glass cover plate 111 and the glass-based circuit board 121 are baked and cured, so that the shape of the encapsulation body 123 with the reflector 112 in the middle is fixed, and the shape of the sealing structure 124 is fixed. After curing, the glass cover plate 111 and the glass-based circuit board 121 are sealed and fixedly connected through the encapsulation body 123 and the sealing structure 124, so as to obtain the magenta glass lamp panel 100.

[0087] Continue to view Figure 3 As shown, in the magenta glass lamp board 100, the package body 123, the blue light LED 122 packaged thereby, and the reflector 112 embedded therein are all sealed in a cavity 124a formed by a glass cover plate 111, a glass-based circuit board 121, and a sealing structure 124, which can effectively prevent external water vapor from entering the cavity 124a and contacting the package body 123, thereby preventing the package body 123 containing fluoride phosphor from contacting water vapor and being hydrolyzed to generate black.

[0088] Combine the following Figure 3-10 As shown, in another embodiment of the present invention, a backlight system manufacturing method is provided, which is used to manufacture the backlight system 1 as described above. The method comprises the following steps:

[0089] S20, manufacturing a magenta glass lamp panel 100;

[0090] In the present invention, the method for manufacturing the magenta glass lamp panel 100 is as described in the above steps S11-S15, and thus will not be repeated.

[0091] S21, providing a green quantum dot film 200, and placing the green quantum dot film 200 above the glass cover plate 111;

[0092] See also Fig.10 As shown, in the present invention, for the magenta light emitted by the magenta glass lamp panel 100 (formed by a mixture of blue light and red light, and the red light is produced by the blue light directly exciting the fluoride red powder), a green quantum dot (QuantumDot) film 200 is specially provided for use therewith to convert the blue light into white light.

[0093] Specifically, the green QD film 200 is disposed above the glass cover plate 111. In this way, when the magenta light (mixed with blue light and red light) emitted by the magenta glass lamp panel 100 enters the green QD film 200, the blue light will directly excite the green quantum dot material to produce green light. At the same time, since the green light generated by the green QD film 200 cannot excite the fluoride red powder, the green light generated by the green QD film 200 will not be absorbed by the fluoride red powder, and the green light will not be lost. That is to say, the combination of fluoride red powder and green QD film 200 in the present application does not produce a conversion step in which the red QD material absorbs green light to produce red light, compared to the prior art, thereby improving the luminous efficiency of both green light and red light, thereby improving the luminous efficiency of the green QD film 200 as a whole. In addition, since red light cannot excite the green quantum dot material, the red light emitted by the magenta glass lamp panel 100 directly leaves the green QD film 200 and continues to propagate upward. The green light and red light generated above are mixed with the blue light that is not absorbed to form white light, which becomes the backlight source of the backlight system 1 .

[0094] In the present embodiment, white light is generated by cooperating the magenta glass light panel 100 with the green QD film 200. Since the luminous efficiency of the magenta glass light panel 100 is greatly improved, as mentioned above, the luminous efficiency of the green quantum dot film 200 is also improved, thereby greatly improving the luminous efficiency of the entire backlight system 1 and meeting the high color gamut requirements.

[0095] S22, providing a first optical film 300, and disposing the first optical film 300 above the green quantum dot film 200;

[0096] Continue to view Fig.10 As shown, in one embodiment, the first optical film 300 is a brightness enhancement film, which is a new type of high-performance optical film with a microscopic prism array structure on its surface. The microprism structure is used to converge light, so that the scattered light is concentrated to the front, thereby improving the overall brightness and uniformity of the backlight system 1.

[0097] S23 , providing a second optical film 400 , and disposing the second optical film 400 above the first optical film 300 .

[0098] Continue to view Fig.10 As shown, in one embodiment, the second optical film 400 is a double brightness enhancement film (Double Brightness Enhancement Film, DBEF), which is a thin film reflective polarizer that uses advanced microsphere combustion technology, so it can efficiently convert reflected light and transmitted light, thereby improving the brightness of the entire backlight system 1.

[0099] It is understandable that the first optical film 300 and the second optical film 400 may also be made of other optical films.

[0100] In summary, the magenta glass lamp board 100 of the present invention, firstly, uses a packaging material containing fluoride phosphor to encapsulate the blue LED 122 to form a package body 123. Since the luminous efficiency of the fluoride phosphor is greatly improved compared with the QD material, the overall luminous efficiency of the magenta glass lamp board 100 is greatly improved; secondly, the fluoride phosphor directly covers the surface of the blue LED 122, and the fluoride phosphor is very close to the blue LED 122, so that the efficiency of the blue light directly exciting the red powder to produce red light is very high, which further improves the luminous efficiency of the magenta glass lamp board 100; furthermore, the reflector 112 formed on the glass cover 111 is embedded in the package body 123 and directly faces the blue LED 122, so that the blue light in the normal direction can be reflected back to the package body 123 containing the fluoride phosphor to once again excite the red powder to emit red light, and further improve the luminous efficiency of the red light. As a result, the overall luminous efficiency of the magenta glass lamp board 100 of the present invention is greatly improved. In addition, the reflector 112 can also diffuse the blue light and red light generated in the package 123 to the surroundings, thereby improving the light emission uniformity of the magenta glass lamp board 100. Finally, the blue LED 122 and the package 123 are sealed by the cavity 124a formed by the glass-based circuit board 121 below, the glass cover 111 above, and the mesh-shaped sealing structure 124. Since the glass plate has a strong water vapor barrier effect, it is difficult for external water vapor to enter the interior of the cavity 124a, and the fluoride phosphor cannot contact water vapor, so the life span is greatly improved, thereby extending the service life of the magenta glass lamp board 100.

[0101] Correspondingly, the method for manufacturing the magenta glass lamp panel provided by the present invention also has the above-mentioned technical effects.

[0102] Correspondingly, the backlight system 1 having the magenta glass lamp panel 100 of the present invention also has the above-mentioned technical effects.

[0103] Furthermore, since the backlight system 1 is provided with a green quantum dot film 200 to cooperate with the magenta glass lamp board 100, when the magenta light (mixed with blue light and red light) emitted by the magenta glass lamp board 100 enters the green quantum dot film 200, firstly, the blue light will excite the green quantum dot (QD) material to produce green light; secondly, since the green light produced by the green quantum dot film 200 cannot excite the fluoride red powder, the green light produced by the green quantum dot film 200 will not be absorbed by the fluoride red powder, and the green light is not lost, thereby improving the luminous efficiency of the green quantum dot film 200; furthermore, red light cannot excite the green quantum dot (QD) material, therefore, the red light produced by the blue light directly exciting the red powder directly leaves the green quantum dot film 200 and continues to propagate upwards, and since the overall luminous efficiency of the magenta glass lamp board 100 is improved, the luminous efficiency of the red light is also higher. Compared with the prior art, the backlight system 1 of the present application avoids the conversion step of the red QD material absorbing green light to produce red light, thereby improving the luminous efficiency of both green light and red light, and improving the luminous efficiency of the green quantum dot film 200 as a whole. In summary, because the luminous efficiency of the magenta glass light panel 100 and the green quantum dot film 200 are both improved, the luminous efficiency of the entire backlight system 1 is greatly improved, meeting the high color gamut requirements.

[0104] Correspondingly, the backlight system manufacturing method of the present invention also has the above technical effects.

[0105] The structures and manufacturing methods of other parts of the backlight system 1 involved in the present invention are conventional methods well known to those skilled in the art, and will not be described in detail here.

[0106] The above disclosure is only the preferred embodiment of the present invention, which certainly cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the scope of the patent application of the present invention are still within the scope covered by the present invention.

Claims

1. A magenta glass light panel, characterized in that: include: A first light panel assembly, comprising a glass cover plate and a reflector, wherein the reflector is fixed to the glass cover plate and arranged in an array; A second light board assembly, comprising a glass-based circuit board, a blue light LED, a package and a sealing structure, wherein the blue light LED is arranged on the glass-based circuit board and arranged in an array, the package wraps the blue light LED and is fixed to the glass-based circuit board, the package contains fluoride phosphor, the sealing structure is a mesh structure and is arranged around each of the packages, and the sealing structure is fixed to the glass-based circuit board; The glass-based circuit board is arranged below the glass cover plate and is fixedly connected through the packaging body and the sealing structure, and the reflector is embedded in the packaging body and faces the blue light LED.

2. The magenta glass lamp panel as claimed in claim 1, characterized in that: The outer diameter of the packaging body is greater than the outer diameter of the reflector, the height of the packaging body is greater than the height of the reflector, and the height of the packaging body is greater than or equal to the height of the sealing structure.

3. The magenta glass lamp panel as claimed in claim 2, characterized in that: The bottom of the package body connected to the glass-based circuit board is in a circular structure and has a first diameter, and the maximum height of the package body is the first height; the bottom of the reflector connected to the glass cover plate is in a circular structure and has a second diameter, and the maximum height of the reflector is the second height; the first diameter is greater than the second diameter, and the first height is greater than the second height.

4. The magenta glass light panel according to any one of claims 1 to 3, characterized in that: The top of the reflector away from the glass cover plate is in a spherical structure and protrudes toward the glass-based circuit board, and the outer diameter of the reflector is 0.8-1.2 mm, and the maximum height of the reflector is 0.15-0.25 mm.

5. A backlight system, characterized in that: include: The magenta glass light panel as described in any one of claims 1 to 4; A green quantum dot film is disposed above the glass cover plate and is used to convert blue light into white light; A first optical film, disposed above the green quantum dot film, for improving the brightness and uniformity of the backlight system; The second optical film is disposed above the first optical film and is used to improve the brightness of the backlight system.

6. A method for manufacturing a magenta glass lamp panel, characterized in that: The steps include: (11) providing a glass cover plate, applying glue on a surface of the glass cover plate to form convex spheres arranged in an array, and baking and curing the convex spheres to obtain a reflector; (12) providing a glass-based circuit board having blue LEDs arranged in an array, dispensing glue on the glass-based circuit board to form a sealing structure with a mesh structure, wherein the sealing structure is arranged around each of the blue LEDs; (13) applying a packaging material containing fluoride phosphor to the blue LED to obtain a packaging body, wherein the packaging body encapsulates the blue LED and has an outer diameter greater than the outer diameter of the reflector and a height greater than the height of the reflector; (14) The glass cover is placed on the glass-based circuit board, and the reflector is aligned with the blue LED and embedded in the package body; (15) The packaging body and the sealing structure between the glass cover plate and the glass-based circuit board are baked and cured to fix the shapes of the packaging body and the sealing structure and to fix the glass cover plate and the glass-based circuit board to obtain a magenta glass lamp panel.

7. The method for manufacturing a magenta glass lamp panel as claimed in claim 6, characterized in that: The outer diameter of the packaging body is greater than the outer diameter of the reflector, the height of the packaging body is greater than the height of the reflector, and the height of the packaging body is greater than or equal to the height of the sealing structure.

8. The method for manufacturing a magenta glass lamp panel according to claim 7, characterized in that: The bottom of the package body connected to the glass-based circuit board is in a circular structure and has a first diameter, and the maximum height of the package body is the first height; the bottom of the reflector connected to the glass cover plate is in a circular structure and has a second diameter, and the maximum height of the reflector is the second height; the first diameter is greater than the second diameter, and the first height is greater than the second height.

9. The method for manufacturing a magenta glass lamp panel according to any one of claims 6 to 8, characterized in that: The top of the reflector away from the glass cover plate is in a spherical structure and protrudes toward the glass-based circuit board, and the outer diameter of the reflector is 0.8-1.2 mm, and the maximum height of the reflector is 0.15-0.25 mm.

10. A method for manufacturing a backlight system, characterized in that: A method for manufacturing a magenta glass light panel as claimed in any one of claims 6 to 9; Also includes: (21) providing a green quantum dot film, and placing the green quantum dot film above the glass cover plate; (22) providing a first optical film, and disposing the first optical film above the green quantum dot film; (23) A second optical film is provided, and the second optical film is disposed on the first optical film.

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