A display screen with blue light reduction function and its principle

Abstract

The present invention relates to the technical field of display device manufacturing. The present invention discloses a display screen with a blue light reduction function and its principle, comprising a frame body and a cover shell, wherein the cover shell is connected to the frame body, a control mainboard is arranged in the cover shell, and the frame body is provided with: a backlight plate, a polarizing plate B, a glass substrate B, a liquid crystal panel, a fluorescent plate, a glass substrate A, and a polarizing plate A in sequence from the end close to the cover shell to the end far from the cover shell; cadmium metal salt is added inside the glass substrate B to present a yellow glass state, a filter plate is arranged between the glass substrate B and the liquid crystal panel, the filter plate is formed by injection molding, stretching, flattening, and surface polishing of anti-blue light masterbatch, and an anti-reflection plate is arranged on the side of the polarizing plate A away from the glass substrate A. The present invention sets a yellow polarizing plate B, sets a filter plate made of anti-blue light masterbatch, and sets an anti-reflection plate that can reduce the blue light reflection on the surface of the display screen, and integrates a yellow light increase method, a filtering method, and an anti-reflection method, so as to reduce the blue light from the light source of the display screen to the maximum extent.

Description

Technical Field

[0001] The present invention relates to the technical field of display device manufacturing, and in particular to a display screen with a blue light reduction function and a principle thereof. Background Art

[0002] A display screen is a commonly used device that converts electrical energy into light energy and displays images. Existing display screens are usually composed of a liquid crystal screen and a light-emitting diode (LED) to achieve color and image display functions. Since LED lamps produce high-energy light when they emit light, these lights contain a large amount of high-energy, short-wavelength blue light. Long-term and short-distance exposure to blue light will cause certain damage and impact on our eyes and vision. Therefore, people are paying more and more attention to the blue light index of the display screen when choosing a display screen.

[0003] There are many methods to reduce blue light, such as filtering, increasing yellow light, reflection, and adjusting devices. Most of the existing display screens use the adjusting device method to reduce the intensity of blue light by increasing the brightness of the display screen and changing the color temperature. This method of increasing the brightness and changing the color cannot reduce the blue light from the source, and increasing the brightness and changing the color will cause visual fatigue to the viewer. Summary of the invention

[0004] In order to solve the above-mentioned problems of the prior art, the present invention provides a display screen with a blue light reduction function and its principle, comprising a frame body and a cover shell, the cover shell is prism-shaped and vertically arranged and connected to the frame body, a control mainboard for electrically controlling the display screen is arranged in the cover shell, and the frame body is provided with the following components in sequence from the end close to the cover shell to the end far from the cover shell: a backlight plate for providing a light source, a polarizing plate B, a glass substrate B, a liquid crystal panel, a fluorescent panel, a glass substrate A, and a polarizing plate A;

[0005] Cadmium metal salt is added inside the glass substrate B to make the glass substrate B appear in a yellow glass state. A filter plate is arranged between the glass substrate B and the liquid crystal panel. The filter plate is formed by injection molding, stretching, flattening, and surface polishing of anti-blue light masterbatch and has anti-blue light masterbatch particles inside. An anti-reflection plate is arranged on the side of the polarizing plate A away from the glass substrate A. The surface of the anti-reflection plate is coated with a layer of white mica for reducing blue light reflection.

[0006] The end surface of the cover shell away from the frame body is provided with three exhaust mesh holes, and a row of fans are respectively arranged at the three exhaust mesh holes in the cover shell, and the exhaust fans are fixed by brackets.

[0007] A further preferred solution is that the glass substrate B is composed of three yellow glass plates, the density of the cadmium metal salt added to the three yellow glass plates decreases toward the filter plate side, and the thickness of the three yellow glass plates increases toward the filter plate side.

[0008] A further preferred solution is that a color filter film is provided between the fluorescent plate and the glass substrate A. The color filter film is a transparent film formed by adding organic dyes to a common plastic substrate through processing.

[0009] A further preferred solution is that the frame is concave at the inner ring of the end away from the cover shell to form a groove, and the anti-reflection plate is bonded to the groove surface by adhesive.

[0010] A further preferred solution is that the control main board is fixed by four sealing plates, and the four sealing plates and the control main board separate the housing into two independent cavities, a heat collection cavity and a heat dissipation cavity, and the exhaust fan is located in the heat collection cavity.

[0011] A further preferred solution is as follows: the sealing plate body is provided with a plurality of ventilation holes connecting the heat dissipation cavity and the heat collection cavity, and the cover shell is provided with a plurality of air inlet mesh holes connecting the outside with the heat dissipation cavity.

[0012] A further preferred solution is that the ventilation hole is trumpet-shaped and has a large aperture facing the heat dissipation cavity side.

[0013] A further preferred solution is that a plurality of heat dissipation holes connected to the outside are provided on the four sides of the frame.

[0014] The beneficial effects of the present invention are embodied in:

[0015] First, by setting a yellow polarizing plate B, blue light can be converted into soft yellow light; by setting a filter plate made of anti-blue light masterbatch, light of a specific wavelength can be absorbed to reduce the proportion of blue light; by setting an anti-reflection plate, the reflection of blue light on the surface of the display screen can be reduced. The yellow light increasing method, filtering method, and anti-reflection method are integrated to maximize the reduction of blue light from the light source of the display screen.

[0016] Second, by setting up an independent heat dissipation cavity and a heat collection cavity, and coordinating the arrangement of air inlet meshes, ventilation holes, exhaust fans, and exhaust meshes, the heat dissipation structure of the entire cover forms an internal and external circulation, which can enhance the heat dissipation effect to extend the life of the structure for reducing blue light in the display screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall cross-sectional structure of the present invention;

[0018] Figure 2 It is a schematic diagram of the external overall structure of the present invention;

[0019] Figure 3 It is a schematic diagram of the frame and its structural cross-section of the present invention;

[0020] Figure 4 is a schematic cross-sectional view of a glass substrate B of the present invention;

[0021] Figure 5is a schematic cross-sectional view of the filter plate of the present invention;

[0022] Figure 6 It is a schematic diagram of the inner structure of the cover shell of the present invention;

[0023] Figure 7 It is a schematic diagram of the outer structure of the cover shell of the present invention;

[0024] Figure 8 It is a schematic diagram of the cross-sectional structure of the cover shell of the present invention.

[0025] Figure markings: 1. frame; 101. heat dissipation hole; 102. groove; 2. cover; 3. air inlet mesh; 4. heat dissipation cavity; 5. heat collection cavity; 6. exhaust fan; 7. control main board; 8. exhaust mesh; 9. sealing plate; 901. ventilation hole; 10. anti-reflection plate; 11. polarizing plate A; 12. glass substrate A; 13. color filter film; 14. fluorescent plate; 15. liquid crystal panel; 16. filter plate; 1601. anti-blue light masterbatch; 17. glass substrate B; 1701. yellow glass plate; 18. polarizing plate B; 19. backlight panel; 20. bracket. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] Embodiment 1:

[0028] Reference Figure 1 , Figure 3 , Figure 5The cover 2 is prism-shaped and vertically arranged and connected to the frame 1. A control mainboard 7 for electrically controlling the display screen is arranged in the cover 2. The frame 1 is provided with the following components in sequence from the end close to the cover 2 to the end far from the cover 2: a backlight plate 19 for providing a light source, a polarizing plate B18, a glass substrate B17, a liquid crystal panel 15, a fluorescent plate 14, a glass substrate A12, and a polarizing plate A11; cadmium metal salt is added to the inside of the glass substrate B17 to make the glass substrate B17 in a yellow glass state. When the light coming out of the polarizing plate B18 passes through the yellow glass substrate B17, the blue light can be converted into a softer yellow light, thereby reducing the proportion of blue light in the light and reducing the intensity of the blue light. A filter plate 16 is arranged between the glass substrate B17 and the liquid crystal panel 15 to filter the light. Plate 16 is a filter plate with anti-blue light masterbatch 1601 particles inside, which is formed by injection molding, stretching, flattening and surface polishing. The anti-blue light masterbatch 1601 has the characteristic of absorbing light of a specific wavelength, so that the proportion of blue light in the light passing through is reduced again. A color filter film 13 is arranged between the fluorescent plate 14 and the glass substrate A12. The color filter film 13 is a transparent film formed by adding organic dyes to ordinary plastic substrates. It can filter the blue light of the light one last time. Through the above three structures of reducing blue light, the blue light from the light source can be greatly reduced; the polarizing plate A11 is provided with an anti-reflection plate 10 on the side away from the glass substrate A12, and the surface of the anti-reflection plate 10 is coated with a layer of white mica for reducing blue light reflection.

[0029] Embodiment 2:

[0030] Reference Figure 4 The glass substrate B17 is composed of three yellow glass plates 1701. The density of the cadmium metal salt added to the three yellow glass plates 1701 decreases toward the filter plate 16 side, and the thickness of the three yellow glass plates 1701 becomes thicker toward the filter plate 16 side. Three yellow glass plates 1701 are arranged to form the glass substrate B17, and the density of the cadmium metal salt gradually decreases with the increase of the thickness, so that the passing light can be subjected to a layered and step-by-step blue light reduction treatment.

[0031] Embodiment 3:

[0032] refer to Figure 1 , Figure 2 , Figure 6 , Figure 7 , Figure 8A plurality of heat dissipation holes 101 connected to the outside are provided on the four sides of the frame 1, three exhaust mesh holes 8 are provided on the end surface of the cover shell 2 away from the frame body 1, and an exhaust fan 6 is respectively provided at the three exhaust mesh holes 8 in the cover shell 2, and the exhaust fan 6 is fixed by a bracket 20, and the control main board 7 is fixed by four sealing plates 9. The four sealing plates 9 and the control main board 7 separate the cover shell 2 into two independent cavities, namely, a heat collection cavity 5 and a heat dissipation cavity 4. The exhaust fan 6 is located in the heat collection cavity 5, and a plurality of ventilation holes 901 are provided on the sealing plate 9 to connect the heat dissipation cavity 4 and the heat collection cavity 5. A plurality of air inlet mesh holes 3 are provided on the shell of the cover shell 2 to connect the outside with the heat dissipation cavity 4, and the ventilation hole 901 is trumpet-shaped with a large diameter facing the heat dissipation cavity 4 side.

[0033] An independent and connected heat dissipation chamber 4 and heat collection chamber 5 are provided. After the exhaust fan 6 discharges the hot air in the heat collection chamber 5, due to the pressure difference, the hot air in the heat dissipation chamber 4 enters the heat collection chamber 5 through the ventilation hole 901, and the external air enters the heat dissipation chamber 4 through the air inlet mesh 3, thereby forming a heat dissipation cycle, which can accelerate the heat dissipation efficiency and thus improve the heat dissipation effect.

[0034] Embodiment 4:

[0035] Reference Figure 3 The inner ring of the frame 1 away from the cover shell 2 is concave to form a groove 102, and the anti-reflection plate 10 is bonded to the groove surface of the groove 102 by adhesive. Since the anti-reflection plate 10 is exposed, it is easy to be scratched. It is connected by adhesive to facilitate the replacement of the anti-reflection plate 10.

[0036] In the description of the embodiments of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "center", "top", "bottom", "top", "bottom", "inside", "outside", "inner side", "outer side" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention 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 invention. Among them, "inside" refers to an internal or enclosed area or space. "Periphery" refers to the area surrounding a specific component or a specific area.

[0037] In the description of the embodiments of the present invention, the terms "first", "second", "third", and "fourth" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first", "second", "third", and "fourth" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0038] In the description of the embodiments of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", and "assemble" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] In the description of the embodiments of the present invention, specific features, structures, materials or characteristics may be combined in a suitable manner in any one or more embodiments or examples.

[0040] In the description of the embodiments of the present invention, it is to be understood that "-" and "~" represent the range between two values, and the range includes the endpoints. For example: "AB" represents a range greater than or equal to A and less than or equal to B. "A~B" represents a range greater than or equal to A and less than or equal to B.

[0041] In the description of the embodiments of the present invention, the term "and / or" herein is merely a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B may represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " herein generally indicates that the associated objects before and after are in an "or" relationship.

[0042] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A display screen with blue light reduction function, characterized in that: The invention comprises a frame (1) and a cover (2); the cover (2) is prism-shaped and is arranged vertically and connected to the frame (1); a control mainboard (7) for electrically controlling a display screen is arranged in the cover (2); and the frame (1) is provided with the following components in order from the end close to the cover (2) to the end far from the cover (2): a backlight plate (19) for providing a light source, a polarizing plate B (18), a glass substrate B (17), a liquid crystal panel (15), a fluorescent panel (14), a glass substrate A (12), and a polarizing plate A (11); Cadmium metal salt is added inside the glass substrate B (17) to make the glass substrate B (17) present a yellow glass state. A filter plate (16) is arranged between the glass substrate B (17) and the liquid crystal panel (15). The filter plate (16) is a filter plate with anti-blue light masterbatch (1601) particles inside, which is formed by injection molding, stretching, flattening, and surface polishing. The polarizing plate A (11) is provided with an anti-reflection plate (10) on the side away from the glass substrate A (12). The surface of the anti-reflection plate (10) is coated with a layer of white mica for reducing blue light reflection. Three exhaust mesh holes (8) are provided on the end surface of the cover shell (2) away from the frame body (1), and an exhaust fan (6) is provided in each of the three exhaust mesh holes (8) in the cover shell (2), and the exhaust fan (6) is fixed by a bracket (20).

2. The display screen with blue light reduction function according to claim 1, characterized in that: The glass substrate B (17) is composed of three yellow glass plates (1701), the density of the cadmium metal salt added to the three yellow glass plates (1701) decreases gradually toward the filter plate (16) side, and the thickness of the three yellow glass plates (1701) increases gradually toward the filter plate (16) side.

3. The display screen with blue light reduction function according to claim 1, characterized in that: A color filter film (13) is provided between the fluorescent plate (14) and the glass substrate A (12). The color filter film (13) is a transparent film formed by adding an organic dye to a common plastic substrate through processing.

4. The display screen with blue light reduction function according to claim 1, characterized in that: The inner ring of the end of the frame (1) away from the cover shell (2) is concave to form a groove (102), and the anti-reflection plate (10) is bonded to the groove surface of the groove (102) by means of adhesive.

5. The display screen with blue light reduction function according to claim 1, characterized in that: The control main board (7) is fixed by four sealing plates (9); the four sealing plates (9) and the control main board (7) separate the housing (2) into two independent cavities, namely a heat collection cavity (5) and a heat dissipation cavity (4); the exhaust fan (6) is located in the heat collection cavity (5).

6. The display screen with blue light reduction function according to claim 5, characterized in that: The sealing plate (9) is provided with a plurality of ventilation holes (901) connecting the heat dissipation cavity (4) and the heat collection cavity (5), and the housing (2) is provided with a plurality of air inlet mesh holes (3) connecting the outside with the heat dissipation cavity (4).

7. The display screen with blue light reduction function according to claim 6, characterized in that: The ventilation hole (901) is trumpet-shaped and has a large aperture facing the heat dissipation cavity (4).

8. The display screen with blue light reduction function according to claim 1, characterized in that: A plurality of heat dissipation holes (101) connected to the outside are provided on four sides of the frame (1).

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