CN116312271A

CN116312271A - LED module and display screen

Info

Publication number: CN116312271A
Application number: CN202310187200.1A
Authority: CN
Inventors: 王勇; 严振航; 赵丽红; 杨四化; 吴涵渠
Original assignee: Shenzhen Aoto Electronics Co Ltd
Current assignee: Shenzhen Aoto Electronics Co Ltd
Priority date: 2023-02-22
Filing date: 2023-02-22
Publication date: 2023-06-23

Abstract

The application relates to the technical field of LED display, in particular to an LED module and a display screen. An LED module comprises a lamp panel, LED lamp beads and a mask; a plurality of LED lamp beads are arranged on one surface of the lamp panel, a driving circuit is arranged on the other surface of the lamp panel, and the mask is arranged on the LED lamp beads; the LED lamp bead comprises four LED chips, wherein the LED chips comprise a red light-emitting chip, a blue light-emitting chip, a green light-emitting chip and a greenish light-emitting chip. The natural color can be displayed more truly by regulating and controlling the four-color light-emitting chip, so that the green display defects in different LED displays are overcome; meanwhile, deflection angles exist when the LED lamp beads are arranged, so that the problem of color cast of a large visual angle is solved.

Description

LED module and display screen

Technical Field

The application relates to the technical field of LED display, in particular to an LED module and a display screen.

Background

At present, an LED lamp bead composed of three light emitting chips of RGB is commonly used for an LED display screen, the color gamut which can be achieved at present is generally about 80% of BT2020, preferably about 85%, and rarely reaches 90%, namely, some real colors in the nature cannot be fed back actually, and the main difference between the existing LED display screen and the real colors is displayed in a green part.

Disclosure of Invention

Based on this, it is necessary to provide an LED module and a display screen for solving the problem that the green color and the true color displayed by the current LED display screen are different.

In a first aspect, the invention provides an LED module, which comprises a lamp panel, LED lamp beads and a mask; a plurality of LED lamp beads are arranged on one surface of the lamp panel, a driving circuit is arranged on the other surface of the lamp panel, and the mask is arranged on the LED lamp beads; the LED lamp bead comprises four LED chips, wherein the LED chips comprise a red light-emitting chip, a blue light-emitting chip, a green light-emitting chip and a greenish light-emitting chip.

In some embodiments, the greenish light emitting chip is a longer wavelength greenish red light emitting chip or a shorter wavelength greenish blue light emitting chip.

In some embodiments, the four LED chips are arranged horizontally or vertically in sequence, or in a 2x2 array.

In some embodiments, four of the LED chips are packaged into one LED light bead.

In some embodiments, a deflection angle is disposed between adjacent LED light beads.

In some embodiments, the yaw angle is rotated 90 degrees clockwise or 90 degrees counterclockwise.

In some embodiments, four of the LED beads are packaged into a four-in-one LED bead, and grooves are formed between the LED beads in the four-in-one LED bead.

In some embodiments, the drive circuit is a common cathode or common anode circuit.

In a second aspect, the present invention further provides a display screen, where the display screen includes the LED display module set in the first aspect, a frame, a signal source, and a power supply box. The LED display modules are spliced in the frame, and the signal source and the power supply box are arranged on the back of the LED display modules.

Compared with the prior art, the invention has the beneficial effects that: compared with the prior art, the LED lamp bead is provided with four kinds of light emitting chips, wherein one of the light emitting chips can be a light emitting chip with longer wavelength and greenish red or shorter wavelength and greenish blue, and the four-color light emitting chip is regulated and controlled, so that natural colors can be displayed more truly, and the green display defects in different LED displays are overcome; meanwhile, deflection angles exist when the LED lamp beads are arranged, so that the problem of color cast of a large visual angle is solved; through four unification encapsulation lamp pearls, there is the slot between the lamp pearls can prevent light string and improve contrast.

Drawings

One or more embodiments are illustrated by way of example and not limitation in the figures of the accompanying drawings, in which like references indicate similar elements, and in which the figures of the drawings are not to scale, unless expressly stated otherwise.

FIG. 1 is a schematic diagram of an arrangement of LED light emitting chips and LED beads on an LED module according to an embodiment of the present invention;

fig. 2 is a schematic layout diagram of an LED light emitting chip and an LED lamp bead on an LED module according to another embodiment of the present invention;

fig. 3 is a schematic structural diagram of a four-in-one LED lamp bead according to an embodiment of the present invention.

Detailed Description

In order to facilitate an understanding of the present application, a more complete description of the present application will now be provided with reference to the relevant figures. Preferred embodiments of the present application are shown in the accompanying drawings. This application may, however, be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

In addition, the technical features mentioned in the different embodiments of the invention described below can be combined with one another as long as they do not conflict with one another.

Referring to fig. 1 to 3, the present invention provides an LED module, which includes a lamp panel, an LED lamp bead, and a mask; a plurality of LED lamp beads 1 are arranged on one surface of the lamp panel, a driving circuit is arranged on the other surface of the lamp panel, and the mask is arranged on the LED lamp beads 1; the LED lamp bead 1 comprises four LED chips, wherein each LED chip comprises a red light-emitting chip 2, a blue light-emitting chip 4, a green light-emitting chip 3 and a green light-emitting chip 5. The driving circuit is a common cathode or common anode circuit.

Specifically, the greenish light emitting chip 5 is a greenish red light emitting chip with a wavelength range of 400nm-650nm or a greenish blue light emitting chip with a wavelength range of 300nm-400 nm. The four LED chips are arranged horizontally or vertically in sequence (as shown in fig. 1), or are arranged in a 2x2 array (as shown in 1a in fig. 2). Four LED chips are packaged into one LED lamp bead 1. The LED lamp beads are arranged on the same side, and the LED lamp beads are arranged on the same side, wherein a deflection angle is arranged between the adjacent LED lamp beads, specifically, the optimal deflection angle between the left and right adjacent LED lamp beads is clockwise rotated by 90 degrees, and the optimal deflection angle between the upper and lower adjacent LED lamp beads is anticlockwise rotated by 90 degrees.

Referring to fig. 3, four LED lamp beads are integrally packaged into four-in-one LED lamp beads, and grooves 7 are formed between the LED lamp beads in the four-in-one LED lamp beads. Grooves exist among the four-in-one packaging lamp beads, so that light can be prevented from being transmitted and contrast ratio can be improved.

According to the invention, four kinds of light emitting chips are arranged in the LED lamp beads, one of the light emitting chips can be a light emitting chip with longer wavelength and greenish red or shorter wavelength and greenish blue, and the four-color light emitting chip is regulated and controlled, so that the natural color can be displayed more truly, and the green display defect in different LED displays is overcome; meanwhile, deflection angles exist when the LED lamp beads are arranged, so that the problem of color cast of a large visual angle is solved.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

It should be noted that the description of the present invention and the accompanying drawings illustrate preferred embodiments of the present invention, but the present invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, which are not to be construed as additional limitations of the invention, but are provided for a more thorough understanding of the present invention. The above-described features are continuously combined with each other to form various embodiments not listed above, and are considered to be the scope of the present invention described in the specification; further, modifications and variations of the present invention may be apparent to those skilled in the art in light of the foregoing teachings, and all such modifications and variations are intended to be included within the scope of this invention as defined in the appended claims.

Claims

1. An LED module is characterized by comprising a lamp panel, LED lamp beads and a mask; a plurality of LED lamp beads are arranged on one surface of the lamp panel, a driving circuit is arranged on the other surface of the lamp panel, and the mask is arranged on the LED lamp beads; the LED lamp bead comprises four LED chips, wherein the LED chips comprise a red light-emitting chip, a blue light-emitting chip, a green light-emitting chip and a greenish light-emitting chip.

2. The LED module of claim 1, wherein the greenish light emitting chip is a greenish red light emitting chip with a longer wavelength or a greenish blue light emitting chip with a shorter wavelength.

3. The LED module of claim 2, wherein the four LED chips are arranged horizontally or vertically in sequence, or in a 2x2 array.

4. The LED module of claim 3, wherein four of the LED chips are packaged as one LED light bead.

5. The LED module of claim 4, wherein a deflection angle is provided between adjacent LED light beads.

6. The LED module of claim 5, wherein the deflection angle is rotated 90 degrees clockwise or 90 degrees counterclockwise.

7. The LED module of claim 6, wherein four of the LED beads are integrally packaged into a four-in-one LED bead, and grooves are provided between the LED beads in the four-in-one LED bead.

8. The LED module of claim 1, wherein the driver circuit is a common cathode or common anode circuit.

9. A display screen, characterized in that it comprises the LED display module set according to any one of claims 1-8, a frame, a signal source and a power supply box. The LED display modules are spliced in the frame, and the signal source and the power supply box are arranged on the back of the LED display modules.