Multi-color-gamut high-brightness backlight source

Abstract

The utility model relates to a multi-color-gamut high-brightness backlight source, which relates to the field of liquid crystal display panel detection equipment, solves the problems that the space is wasted and the detection efficiency is lower as the existing liquid crystal display panel detection equipment can only detect in one mode, and comprises a protection assembly, a light-emitting assembly, a uniform light diffusion plate and a power supply switching assembly are sequentially arranged in the protection assembly from bottom to top, the light-emitting assembly comprises a lamp panel and bicrystal LED lamp beads arranged on the lamp panel, and warm-color-temperature high-color-gamut LEDs and cold-color-temperature common-color-gamut LEDs are arranged in the bicrystal LED lamp beads; the power supply switching assembly is used for supplying power to the bicrystal LED lamp beads and conducting current on-off switching between the warm color temperature high color gamut LED and the cold color temperature common color gamut LED. The device has the advantages of being high in operability, easy to implement, high in detection efficiency and small in occupied space, and the utilization rate of the device is improved.

Description

Technical Field

[0001] The utility model relates to the field of liquid crystal panel detection equipment, in particular to a multi-color range high-brightness backlight source. Background Art

[0002] The backlight module BLU is used in the inspection equipment of LCD panels. This BLU has stricter parameter requirements than ordinary lighting boxes. To inspect a certain type of LCD panel, it is necessary to match its backlight source, specific color coordinates, specific brightness level, etc. In the past, LCD panels had lower requirements on color performance, so ordinary inspection backlight could meet the requirements.

[0003] Nowadays, high color gamut display panels are increasingly used. For the detection of such high color gamut panels, a suitable high color gamut backlight is required. In addition to high requirements for color coordinates, color temperature, and uniformity, this backlight also requires the spectrum to match. A high color gamut backlight can be developed for this purpose alone, but placing two types of backlights at the detection station of the LCD panel production line not only wastes space, but also has low detection efficiency.

[0004] The utility model aims to develop a detection platform that can be applied to both cold color temperature ordinary color gamut and warm color temperature high color gamut liquid crystal panels. Inspectors on the production line can switch to the corresponding backlight mode at any time according to the type of liquid crystal panel. Utility Model Content

[0005] The utility model aims to provide a multi-color gamut high-brightness backlight source, which solves the problem that the existing detection equipment of liquid crystal display panels can only perform detection in one mode, that is, wastes space and has low detection efficiency.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] The utility model provides a multi-color gamut high-brightness backlight source, including a protection component, the protection component includes an outer frame, a bottom plate arranged in the outer frame and an upper frame matched with the outer frame, and the protection component is arranged in sequence from bottom to top:

[0008] A light-emitting component, the light-emitting component comprising a plurality of light boards evenly distributed on the bottom plate and a dual-crystal LED lamp bead arranged on each of the light boards, all the light boards in each row on the bottom plate are a group and connected by wires, and the dual-crystal LED lamp bead is provided with a warm color temperature high color gamut LED and a cold color temperature ordinary color gamut LED;

[0009] A light-distributing diffuser, which is disposed above the light-emitting component and is used to atomize and distribute the light emitted by the dual-crystal LED lamp beads;

[0010] It also includes a power supply switching component arranged on the bottom end surface of the outer side of the base plate, and the power supply switching component is used to power the dual-crystal LED lamp beads and switch the current on and off between the warm color temperature high color gamut LED and the cold color temperature ordinary color gamut LED.

[0011] Furthermore, the dual-crystal LED lamp beads on each of the lamp boards are provided in multiple numbers and are distributed in rows and columns on the lamp board. All the horizontally parallel dual-crystal LED lamp beads on each of the lamp boards are grouped together and connected in series to form a channel, and the channels on each of the lamp boards are connected in parallel.

[0012] Furthermore, the power supply component includes a constant current board and a first connector and a second connector respectively arranged on both sides of each group of light boards, the first connector and the second connector are connected to the constant current board through wires, the first connector is used to supply power to the warm color temperature and high color gamut LED, and the second connector is used to supply power to the cold color temperature and normal color gamut LED.

[0013] Furthermore, the bottom plate and the lamp board are both made of aluminum plates, and the end surface of the lamp board on which the dual-crystal LED lamp beads are arranged is provided with a reflective layer.

[0014] Furthermore, a step surface for supporting the light-homogenizing diffuser plate is provided on the inner wall of the outer frame, and a supporting adhesive strip is pasted on the step surface.

[0015] Furthermore, the light board is provided with a support column for supporting the light-homogenizing diffuser plate, and the support column is transparent.

[0016] Furthermore, the light-homogenizing diffuser plate is embedded in the upper frame, and a flexible protective layer is provided on the inner wall of the upper frame along its circumference to protect the light-homogenizing diffuser plate.

[0017] Furthermore, a limit support block is arranged on the outer end surface of the upper frame, and the upper part of the limit support block is arranged in a step-shaped manner.

[0018] Furthermore, a plurality of supporting legs are provided along the length of the bottom end of the protection component.

[0019] Due to the application of the above technical solution, the utility model has the following advantages compared with the prior art:

[0020] The utility model discloses a multi-color gamut high-brightness backlight source. Since a light-emitting component, a uniform light diffusion plate and a power supply switching component are sequentially arranged from bottom to top in a protective component, the light-emitting component includes a plurality of lamp boards evenly distributed on a bottom plate and dual-crystal LED lamp beads arranged on each lamp board, and the dual-crystal LED lamp beads are provided with warm color temperature high color gamut LEDs and cold color temperature ordinary color gamut LEDs; the power supply switching component is used to supply power to the dual-crystal LED lamp beads, and to switch the current on and off between the warm color temperature high color gamut LEDs and the cold color temperature ordinary color gamut LEDs; when the liquid crystal panel is inspected by adopting the multi-color gamut high-brightness backlight source of this structure, the inspector on the production line can switch to the corresponding backlight mode at any time according to the type of the liquid crystal panel, and the scheme has strong operability and is easy to implement, improves the utilization rate of the equipment, has high detection efficiency and occupies less space; with the help of multi-color gamut backlight technology, manufacturers can more strictly control the quality standards of liquid crystal panels, thereby producing high-quality products and improving market competitiveness, and the structure is simple, easy to operate and has comprehensive functions. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Hereinafter, some specific embodiments of the present invention will be described in detail in an exemplary and non-limiting manner with reference to the accompanying drawings. The same reference numerals in the accompanying drawings indicate the same or similar components or parts. It should be understood by those skilled in the art that these drawings are not necessarily drawn to scale. In the accompanying drawings:

[0022] Figure 1 It is a schematic diagram of the overall structure of the preferred embodiment of the utility model;

[0023] Figure 2 It is an exploded schematic diagram of the overall structure in the preferred embodiment of the utility model;

[0024] Figure 3 It is a schematic diagram of the structure of a double-crystal LED lamp bead in a preferred embodiment of the utility model;

[0025] Figure 4 It is a structural schematic diagram of the light-emitting component in the preferred embodiment of the utility model;

[0026] Figure 5 yes Figure 2 Enlarged view of point A in the middle.

[0027] The reference numerals are described as follows:

[0028] 1. Protection assembly; 11. Outer frame; 12. Bottom plate; 13. Upper frame;

[0029] 2. Support legs;

[0030] 3. Light-emitting components; 31. Light board; 32. Dual-crystal LED lamp beads; 321. Warm color temperature and high color range LED; 322. Cold color temperature and normal color range LED;

[0031] 4. Light-homogenizing diffuser;

[0032] 5. Power supply switching component; 51. Constant current board; 52. First connector; 53. Second connector;

[0033] 6. Support rubber strip; 7. Support column; 8. Flexible protective layer; 9. Limit support block; 10. LCD panel. DETAILED DESCRIPTION

[0034] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0035] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship 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 multi-color gamut high-brightness backlight source or component 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. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0036] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0037] refer to Figure 1 , Figure 2 and Figure 3 The utility model provides a multi-color gamut high-brightness backlight source, including a protection component 1, the protection component 1 includes an outer frame 11, a bottom plate 12 arranged in the outer frame 11 and an upper frame 13 matched with the outer frame 11, and a plurality of supporting feet 2 are arranged along the length of the bottom end of the protection component 1, and the protection component 1 is sequentially arranged from bottom to top:

[0038] refer to Figure 2 , Figure 3 and Figure 4, the light-emitting component 3 includes a plurality of lamp boards 31 covering the entire bottom plate 12 and dual-crystal LED lamp beads 32 arranged on each lamp board 31, all lamp boards 31 in each row on the bottom plate 12 are a group and connected by wires, and multiple dual-crystal LED lamp beads 32 on each lamp board 31 are arranged and distributed on the lamp board 31 in rows and columns, all the horizontally parallel dual-crystal LED lamp beads 32 on each lamp board 31 are a group and connected in series to form a channel, and the channels on each lamp board 31 are connected in parallel, and the dual-crystal LED lamp beads 32 are provided with warm color temperature high color range LEDs 321 and cold color temperature ordinary color range LEDs 322;

[0039] A light-distributing diffuser 4 is disposed above the light-emitting assembly 3 and is used to atomize and distribute the light emitted by the dual-crystal LED lamp beads 32;

[0040] It also includes a power supply switching component 5 arranged on the outer bottom end surface of the bottom plate 12. The power supply switching component 5 is used to supply power to the dual-crystal LED lamp beads 32 and switch the current on and off between the warm color temperature high color range LED 321 and the cold color temperature ordinary color range LED 322. The power supply switching component 5 includes a constant current board 51 and a first connector 52 and a second connector 53 respectively arranged on both sides of each group of lamp boards 31. The first connector 52 and the second connector 53 are both connected to the constant current board 51 through wires. The first connector 52 is used to supply power to the warm color temperature high color range LED 321, and the second connector 53 is used to supply power to the cold color temperature ordinary color range LED 322. The constant current board 51 is also divided into multiple output channels, which are independent of each other. Each group of lamps 31 is connected to the corresponding output channel of the constant current board 51 through the first connector 52 and the second connector 53.

[0041] refer to Figure 1 , Figure 2 and Figure 3 The constant current board 51 is also provided with a switch for switching between the warm color temperature high color range LED 321 and the cold color temperature normal color range LED 322, and a brightness adjustment knob for controlling the current is also provided on the constant current board 51. The brightness of each area can be adjusted by the brightness adjustment knob.

[0042] refer to Figure 2 , Figure 3 and Figure 4 The bottom plate 12 and the lamp board 31 are both made of aluminum plate, which has a high heat dissipation performance; the end surface of the double-crystal LED lamp bead 32 on the lamp board 31 is provided with a reflective layer. The reflective layer is white paint painted on the lamp board 31, and the white paint has a good reflective effect.

[0043] refer to Figure 2 , Figure 3 and Figure 4, a step surface for supporting the light-dispersing plate 4 is provided on the inner wall of the outer frame 11, and a support rubber strip 6 is pasted on the step surface. The support rubber strip 6 not only supports the light-dispersing plate 4, but also protects the light-dispersing plate 4, so as to prevent the outer frame 11 from knocking or wearing the light-dispersing plate 4; a support column 7 for supporting the light-dispersing plate 4 is provided on the lamp board 31, and a plurality of support columns 7 are evenly distributed on a plurality of lamp boards 31, and the support columns 7 are transparently provided, and the support column 7 plays a supporting role, so as to prevent the middle area of ​​the light-dispersing plate 4 from sinking, and ensure that the upper surface of the light-dispersing plate 4 is in a flat state; the light-dispersing plate 4 is embedded in the upper frame 13, and the light-dispersing plate 4 is fixed by a fixing member, and a flexible protective layer 8 for protecting the light-dispersing plate 4 is provided on the inner wall of the upper frame 13 along its circumference. The flexible protective layer 8 is made of thin foam glue, which is used to compact the light-distributing plate 4 and the upper frame 13 , while also preventing the hard upper frame 13 from damaging the light-distributing plate 4 .

[0044] refer to Figure 5 A limiting support block 9 is arranged on the outer end face of the upper frame 13, and the upper part of the limiting support block 9 is arranged in a step-like manner. When the liquid crystal panel 10 is inspected, the liquid crystal panel 10 is supported by the limiting support block 9. By arranging the upper part of the limiting support block 9 in a step-like manner, it can be used to clamp the liquid crystal panel 10, and the liquid crystal panel 10 is not easy to slip.

[0045] Working principle:

[0046] According to the actual detection situation of the liquid crystal panel 10, a warm color temperature high color gamut environment or a cold color temperature normal color gamut environment is selected through the switching switch on the constant current board 51. When it is necessary to test in a warm color temperature high color gamut environment, the warm color temperature high color gamut LED 321 in the dual-crystal LED lamp bead 32 is powered by the constant current board 51 to emit a light source. Thereafter, the liquid crystal panel 10 to be tested is placed on the limit support block 9 for testing. When the brightness in the light-emitting area is uneven, for example, when the brightness of the edge area of ​​this multi-color gamut high-brightness backlight source is slightly darker under the same current, the current in this area can be increased a little by the current adjustment knob to ensure the uniformity of the brightness of the light-emitting area. Similarly, when it is necessary to test in a cold color temperature normal color gamut environment, switch it through the switching switch.

[0047] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with this technology to understand the content of the utility model and implement it accordingly. They cannot be used to limit the protection scope of the utility model. All equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A multi-color gamut high-brightness backlight source, comprising a protection component (1), the protection component (1) comprising an outer frame (11), a bottom plate (12) arranged in the outer frame (11), and an upper frame (13) matched with the outer frame (11), characterized in that: The protective component (1) is provided with the following components from bottom to top: A light-emitting assembly (3), the light-emitting assembly (3) comprising a plurality of light panels (31) evenly distributed on the bottom plate (12) and a dual-crystal LED lamp bead (32) arranged on each of the light panels (31), all the light panels (31) in each row on the bottom plate (12) being a group and connected by wires, and the dual-crystal LED lamp bead (32) being provided with a warm color temperature high color gamut LED (321) and a cold color temperature normal color gamut LED (322); A light-homogenizing diffuser plate (4), the light-homogenizing diffuser plate (4) being arranged above the light-emitting assembly (3), the light-homogenizing diffuser plate (4) being used to atomize and homogenize the light emitted by the dual-crystal LED lamp bead (32); It also includes a power supply switching component (5) arranged on the outer bottom end surface of the bottom plate (12), the power supply switching component (5) being used to supply power to the dual-crystal LED lamp bead (32) and to switch the current on and off between the warm color temperature high color gamut LED (321) and the cold color temperature ordinary color gamut LED (322).

2. The multi-color gamut high-brightness backlight source according to claim 1, characterized in that: A plurality of the dual-crystal LED lamp beads (32) on each of the lamp boards (31) are arranged and distributed in rows and columns on the lamp board (31); all of the transversely parallel dual-crystal LED lamp beads (32) on each of the lamp boards (31) form a group and are connected in series to form a channel; and the channels on each of the lamp boards (31) are connected in parallel.

3. The multi-color gamut high-brightness backlight source according to claim 1 or 2, characterized in that: The power supply switching component (5) comprises a constant current board (51) and a first connector (52) and a second connector (53) respectively arranged on both sides of each group of the light boards (31); the first connector (52) and the second connector (53) are both connected to the constant current board (51) via wires; the first connector (52) is used to supply power to the warm color temperature high color gamut LED (321); and the second connector (53) is used to supply power to the cold color temperature normal color gamut LED (322).

4. The multi-color gamut high-brightness backlight source according to claim 3, characterized in that: The bottom plate (12) and the lamp board (31) are both made of aluminum plates, and the end surface of the lamp board (31) on which the dual-crystal LED lamp beads (32) are arranged is provided with a reflective layer.

5. The multi-color gamut high-brightness backlight source according to claim 4, characterized in that: A step surface for supporting the light-homogenizing diffuser plate (4) is provided on the inner wall of the outer frame (11), and a supporting adhesive strip (6) is adhered to the step surface.

6. The multi-color gamut high-brightness backlight source according to claim 4 or 5, characterized in that: The light panel (31) is provided with a support column (7) for supporting the light-homogenizing diffuser plate (4); the support column (7) is provided in a transparent shape.

7. The multi-color gamut high-brightness backlight source according to claim 6, characterized in that: The light-homogenizing diffuser plate (4) is embedded in the upper frame (13), and a flexible protective layer (8) for protecting the light-homogenizing diffuser plate (4) is provided on the inner wall of the upper frame (13) along its circumference.

8. The multi-color gamut high-brightness backlight source according to claim 1, characterized in that: A limit support block (9) is arranged on the outer end surface of the upper frame (13), and the upper portion of the limit support block (9) is arranged in a step-like manner.

9. The multi-color gamut high-brightness backlight source according to claim 1, characterized in that: The bottom end of the protection component (1) is provided with a plurality of supporting legs (2) along its length.

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