Eye-protection COB LED display screen capable of improving display effect

Abstract

An eye-protection COB LED display screen capable of improving the display effect is characterized in that the eye-protection COB LED display screen comprises a circuit substrate, LED luminous bodies, a light transmitting part, a light blocking part and a blue light part, and the LED luminous bodies are distributed in an array mode and welded to the circuit substrate; the light-transmitting part is arranged on the circuit substrate, and the LED luminous body is wrapped in the light-transmitting part; the light blocking part is distributed on the light transmitting part and located on the periphery of the upper portion of each LED luminous body, and the light blocking part is made of black materials; the blue light part is arranged in the light blocking part and located in the light emitting direction of the LED luminous body. Wherein the light transmitting part is used for protecting the LED luminous bodies, the light blocking part is used for physically isolating light interference of the adjacent LED luminous bodies, avoiding the moire phenomenon and meanwhile improving the display contrast ratio and brightness uniformity, and the blue light part is used for resisting blue light and improving the eye protection effect. The eye-protection COB LED display screen capable of improving the display effect has the advantages of being simple in structure, practical in function, high in practicability and suitable for being popularized vigorously.

Description

Technical Field

[0001] This utility model relates to the field of display screens, and in particular to an eye-protecting COB LED display screen that can improve display effects. Background Technology

[0002] COB (Chip-on-Board) is a display screen manufacturing process that directly solders LED light-emitting elements onto a PCB board. Currently, most COB processes involve covering the entire PCB board with a transparent resin or similar material after soldering the LED light-emitting elements to protect the LED light-emitting elements and their gold wires from external damage.

[0003] Because LED light emitters are arranged in an array, they have a certain periodicity. When the light from adjacent LEDs interferes, moiré patterns easily appear. Current technology typically involves adding a diffuser sheet in front of the LED screen to blur the light and reduce sharpness, thereby altering the spatial frequency to eliminate moiré patterns. While this technology can solve the moiré pattern problem, it reduces the screen's brightness and contrast.

[0004] Furthermore, as is well known, blue light can cause eye strain, decreased vision, and dry eyes, and it is highly damaging to the eyes. Blue light is also present in LED screens. Therefore, LED screens also need to improve their eye protection features to meet users' eye care needs. Utility Model Content

[0005] The present invention aims to solve the above problems and provides an eye-friendly COB LED display screen that can improve the display effect.

[0006] To address the aforementioned problems, this utility model provides an eye-friendly COB LED display screen that improves display performance, comprising:

[0007] Circuit board;

[0008] LED light emitters are arranged in an array and soldered onto the circuit board;

[0009] A light-transmitting portion is provided on the circuit board and encapsulates the LED light-emitting element therein;

[0010] The light-blocking part is distributed on the light-transmitting part and located above the outer periphery of each LED light-emitting element; the light-blocking part is made of black material.

[0011] The blue light section is located within the light-blocking section and is situated in the light-emitting direction of the LED light-emitting body.

[0012] Furthermore, the light-transmitting portion includes a plurality of arrayed first directional portions and second directional portions, the first directional portions being parallel and spaced apart, the second directional portions being parallel and spaced apart, and the first directional portions and the second directional portions being coplanar and perpendicularly connected to form a plurality of square frame structures.

[0013] Furthermore, the number of the box structures is the same as the number of the LED light-emitting elements.

[0014] Furthermore, the LED light emitter is located on the central axis of the frame structure.

[0015] Furthermore, the blue light section is formed by filling the frame structure with an anti-blue light material and then curing it.

[0016] Furthermore, the surface of the blue light-emitting portion is flush with the surface of the light-blocking portion.

[0017] Furthermore, the light-blocking portion also includes a third directional portion, which is perpendicular to the first directional portion and the second directional portion.

[0018] Furthermore, the third directional portion is located at the intersection of the first directional portion and the second directional portion, and extends from the intersection of the first directional portion and the second directional portion toward the light-transmitting portion.

[0019] The beneficial contribution of this utility model lies in its effective solution to the aforementioned problems. The eye-protecting COB LED display screen of this utility model, which improves display effect, includes a circuit board, LED light emitters, a light-transmitting part, a light-blocking part, and a blue light part. The light-transmitting part protects the LED light emitters, the light-blocking part physically isolates light interference between adjacent LED light emitters to avoid moiré patterns and improves display contrast, and the blue light part resists blue light, enhancing eye protection. This eye-protecting COB LED display screen of this utility model features a simple structure and practical function, making it highly practical and worthy of widespread promotion. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structural principle of this utility model.

[0021] Figure 2 This is a schematic diagram of the light-blocking part of this utility model.

[0022] Attached image labels:

[0023] Circuit board 10, LED light source 20, light-transmitting part 30, light-blocking part 40, first direction part 41, second direction part 42, third direction part 43, blue light part 50. Detailed Implementation

[0024] The following embodiments are further explanations and supplements to the present invention and do not constitute any limitation on the present invention.

[0025] like Figure 1 , Figure 2 As shown, the eye-protecting COB LED display screen of this utility model, which can improve the display effect, includes a circuit board 10, an LED light emitter 20, a light-transmitting part 30, a light-blocking part 40, and a blue light part 50.

[0026] The circuit board 10 can be any known circuit board 10, and this embodiment does not limit it.

[0027] The LED light emitters 20 are arranged in an array on the circuit board 10 and are soldered onto the circuit board 10 using known processes. Typically, each LED light emitter 2020 includes three LED chips, which correspond to the red, blue, and green LED chips of the RGB primary colors, respectively. Of course, the specific arrangement of the LED light emitters 20 is not limited, its color is not limited, and the number of LED light emitters it contains is also not limited.

[0028] The light-transmitting portion 30 is used to protect the LED light-emitting element 20. The light-transmitting portion 30 is disposed on the circuit board 10 and encloses the LED light-emitting element 20 therein. The light-transmitting portion 30 is made of a transparent material, which does not obstruct the passage of light and has a high light transmittance. The light-transmitting portion 30 is attached to the circuit board 10, and by enclosing the LED light-emitting element 20 inside the light-transmitting portion 30, the LED light-emitting element 20 can be protected from external damage.

[0029] In some embodiments, the top and side surfaces of the light-transmitting portion 30 are planar, and its overall structure is a rectangular block. The top of the light-transmitting portion 30 is planar, which facilitates the installation of the light-blocking portion 40.

[0030] The light-blocking part 40 is disposed on the light-transmitting part 30 and located above and around each LED light-emitting element 20. The light-blocking part 40 is made of black material, which can be black opaque material or black transparent material, depending on the need.

[0031] The light-blocking part 40 includes a plurality of arrayed first directional parts 41 and second directional parts 42. The first directional parts 41 and the second directional parts 42 are arranged horizontally, wherein the first directional parts 41 are arranged in parallel intervals, the second directional parts 42 are arranged in parallel intervals, and the first directional parts 41 and the second directional parts 42 are vertically connected to form a plurality of square frame structures.

[0032] The light-blocking part 40 is located above the LED light-emitting body 20 and is higher than the top of the LED light-emitting body 20.

[0033] The first directional portion 41 and the second directional portion 42 of the light-blocking part 40 are preferably located at the intersection of the light rays from adjacent LED light emitters 20. In actual installation, they can be adjusted and set according to the light emission angle of the LED light emitters 20. In this embodiment, the number of the frame structures is the same as the number of LED light emitters 20, and each frame structure is located on the periphery of the LED light emitters 20, with each LED light emitter 20 located on the central axis of the frame structure. In this way, the light-blocking part 40 can prevent interference between the light rays from adjacent LED light emitters 20, thereby avoiding the generation of moiré patterns.

[0034] Furthermore, when the light rays from adjacent LED emitters 20 intersect at the middle position, the brightness at the intersection point is usually higher than the brightness at the location of the LED emitter 20, thus creating a bright spot visual effect. A light-blocking portion 40 is provided between adjacent LED emitters 20. This light-blocking portion 40 is black, and especially when it is black and transparent, it can reduce the brightness of the light at that point, making its brightness consistent with the brightness of other locations. This results in a more uniform brightness distribution. Moreover, when the screen has a black background, it is easier to improve the image contrast; therefore, the black light-blocking portion 40 also helps to improve the image contrast.

[0035] Furthermore, the light-blocking portion 40 also includes a third directional portion 43. The third directional portion 43 is perpendicular to the first directional portion 41 and the second directional portion 42, is arranged vertically, and is located at the intersection of the first directional portion 41 and the second directional portion 42. It extends from the intersection of the first directional portion 41 and the second directional portion 42 toward the light-transmitting portion 30. The third directional portion 43 may extend to contact the circuit board 10, or it may extend into the light-transmitting portion 30 without contacting the circuit board 10. Preferably, the end of the third directional portion 43 is located within the light-transmitting portion 30, at a depth between the top and bottom of the LED light-emitting element 20.

[0036] The third-party directional part 43 can, on the one hand, strengthen the bonding strength between the light-blocking part 40 and the light-transmitting part 30 to prevent them from separating, and on the other hand, it can also hinder the light interference of adjacent LED light-emitting bodies 20 to solve the moiré pattern problem.

[0037] To resist blue light, a blue light-emitting portion 50 is provided within the light-blocking portion 40. The blue light-emitting portion 50 is located in the light-emitting direction of the LED light-emitting element 20. The blue light-emitting portion 50 is formed by filling the frame structure with an anti-blue light material and then curing it. The surface of the blue light-emitting portion 50 is flush with the surface of the light-blocking portion 40. The anti-blue light material can be any known material, requiring excellent transparency after coating, with a visible light transmittance greater than 90%.

[0038] By placing the blue light section 50 inside the light blocking section 40, the light emitted by the LED light source 20 needs to pass through the blue light section 50, thus absorbing the blue light frequency of the LED light source 20 and improving the eye protection effect.

[0039] Thus, the eye-protecting COB LED display screen of this utility model, which can improve the display effect, not only solves the moiré pattern phenomenon, but also improves the contrast, makes the brightness distribution more uniform, and improves the eye protection effect. It has strong practicality and should be vigorously promoted.

[0040] Although the present invention has been disclosed through the above embodiments, the scope of the present invention is not limited thereto. Without departing from the concept of the present invention, the above components can be replaced by similar or equivalent elements known to those skilled in the art.

Claims

1. An eye-friendly COB LED display screen that improves display performance, characterized in that, It includes: Circuit board (10); LED light emitters (20) are arranged in an array and soldered onto the circuit board (10); A light-transmitting portion (30) is provided on the circuit board (10) and encloses the LED light-emitting body (20) therein; The light-blocking part (40) is distributed on the light-transmitting part (30) and located above the outer periphery of each LED light-emitting body (20). The light-blocking part (40) is made of black material. The blue light section (50) is disposed within the light blocking section (40) and located in the light emission direction of the LED light emitter (20).

2. The eye-protecting COB LED display screen with improved display effect as described in claim 1, characterized in that, The light-transmitting part (30) includes a plurality of arrayed first direction parts (41) and second direction parts (42), the first direction parts (41) are parallel and spaced apart, the second direction parts (42) are parallel and spaced apart, and the first direction parts (41) and the second direction parts (42) are coplanar and perpendicularly connected to form a plurality of square frame structures.

3. The eye-protecting COB LED display screen with improved display effect as described in claim 2, characterized in that, The number of the box structures is the same as the number of the LED light emitters (20).

4. The eye-protecting COB LED display screen with improved display effect as described in claim 3, characterized in that, The LED light source (20) is located on the central axis of the frame structure.

5. The eye-protecting COB LED display screen with improved display effect as described in claim 4, characterized in that, The blue light section (50) is formed by filling the frame structure with anti-blue light material and then curing it.

6. The eye-protecting COB LED display screen with improved display effect as described in claim 5, characterized in that, The surface of the blue light part (50) is flush with the surface of the light blocking part (40).

7. The eye-protecting COB LED display screen with improved display effect as described in claim 6, characterized in that, The light-blocking part (40) further includes a third direction part (43), which is perpendicular to the first direction part (41) and the second direction part (42).

8. The eye-protecting COB LED display screen with improved display effect as described in claim 7, characterized in that, The third direction portion (43) is located at the intersection of the first direction portion (41) and the second direction portion (42), and extends from the intersection of the first direction portion (41) and the second direction portion (42) toward the light-transmitting portion (30).

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