CN-122018198-A - LED lamp arrangement method of side-in backlight module and backlight module thereof

CN122018198ACN 122018198 ACN122018198 ACN 122018198ACN-122018198-A

Abstract

The invention discloses an LED lamp arrangement method of a side-in backlight module and the backlight module thereof, the method comprises the following steps of (1) measuring and obtaining the visible area width L of the backlight module, and determining the number N of the LED lamps required to be arranged; the LED lamps are arranged, the whole group of LED lamps is centered in the area below the visible area width, and the arrangement is completed according to the arrangement rule of even lamps or odd lamps. By the method, the design efficiency can be greatly improved, the luminous angle and dark area of the LED lamp are uniform, the mesh points of the light guide plate are convenient to arrange and debug, and the visual effect of uneven brightness of the product is improved.

Inventors

YE WEIXING
LU ZHIJIAN
LU JIANSHU
LIANG SHENGHAO
LIANG JINSHUI

Assignees

广西奥普迪斯电子有限公司

Dates

Publication Date: 20260512
Application Date: 20260313

Claims (5)

1. The LED lamp arrangement method of the side-in type backlight module is characterized by comprising the following steps of: (1) Measuring and obtaining the width L of a visual area (1) of the backlight module, and determining the number N of LED lamps (2) required to be arranged; (2) Calculating to obtain a lamp distance P through the formula P=L/(N+0.25), wherein when N=1, the lamp distance P is calculated according to P=L/2; (3) The LED lamps (2) are arranged, (3.1) When N is an odd number, A. Drawing a central line (4) along the longitudinal direction of the width L of the visible area (1); b. an LED lamp (2) is arranged at the edge of the light guide plate (5) and the position of the central line (4) as a reference lamp; c. Taking the reference lamp as the center, arranging (N-1)/2 LED lamps (2) at intervals P of the LED lamps (2) in a symmetrical mode at the edge of the light guide plate (5) and at the left and right sides of the center line (4); (3.2) when N is an even number, A. Drawing a central line (4) along the longitudinal direction of the width L of the visible area (1); b. The first LED lamp (2) and the second LED lamp (2) are respectively arranged at the edge of the light guide plate (5) and at the positions of the left side and the right side of the central line (4) which are spaced from the central line (4) by P/2 intervals; c. The edges of the light guide plate (5) are symmetrically arranged at the left side and the right side of the central line (4) by taking the first LED lamp (2) and the second LED lamp (2) as references, and the LED lamps (2) are respectively arranged according to the lamp interval P.
2. The method for arranging the LED lamps of the side-entry backlight module according to claim 1, wherein: the backlight module is a square window backlight module.
3. The side-in backlight module comprises a substrate (6), an LED lamp, a light guide plate (5), a light guide lattice point (7) and an optical film, wherein the LED lamp, the light guide plate (5), the light guide lattice point (7) and the optical film are fixed on the substrate (6), the substrate (6) is positioned on one side of a light inlet surface of the light guide plate (5), the light guide lattice point (7) is arranged on the light guide surface of the light guide plate (5), and the optical film is arranged on a light outlet surface of the light guide plate (5), and the side-in backlight module is characterized in that the LED lamp (2) is arranged on the substrate (6) according to the method of claim 1 or 2.
4. The side-entry backlight module as set forth in claim 3, wherein the arrangement density of the light guide dots (7) is gradually increased along with the direction away from the light-entry side, and the density of the light guide dots (7) in the area opposite to the LED lamps (2) is lower than the density of the light guide dots (7) in the area opposite to the middle of two adjacent lamps at the same horizontal position.
5. The side-entry backlight module as claimed in claim 3, wherein the light guide plate (5) is a wedge-shaped light guide plate (5) having a thickness on the light incident side greater than that on the light exit side, and a micro prism array or a V-cut microstructure is disposed on the light incident surface of the light guide plate (5).

Description

LED lamp arrangement method of side-in backlight module and backlight module thereof Technical Field The invention belongs to the technical field of backlight modules, and particularly relates to an LED lamp arrangement method of a side-in type backlight module and the backlight module thereof. Background With the wide use of the liquid crystal display, the application range of the backlight module is wide in industrial equipment, banking terminals, office automation, communication, electronic toys and consumer products, such as home appliances, telephones, mobile phones, notebook computers, MP3, MP4, PDAs, instrument instruments, electronic dictionaries, electronic notebooks, learning machines and the like. The liquid crystal display screens are provided with light sources by the backlight module, the backlight module works in a mode of converting an incident line light source or a point light source into a uniformly emergent surface light source, the liquid crystal display screens can be divided into a side-in type backlight module and a direct type backlight module according to different light source placement positions, and the side-in type structure is generally suitable for the middle-small size backlight module and mainly applied to mobile phones, notebook computers, vehicle-mounted panels, monitors and the like, and has the characteristics of light weight, thinness and the like. Aiming at the side-in type backlight module, the backlight source uses different numbers of LED lamps and has more and less numbers along with the performance requirement, so that the LED lamps correspond to different numbers of the LED lamps, the intervals of the LED lamps are correspondingly different, and after the light guide plate is set according to the interval positions of the lamps, the density of the net points of the light guide plate is adjusted to improve the optical effects of the bright and dark areas among the backlight source lamps and the whole visible area. At present, the calculation of the distance between the LED lamps is designed at will according to the experience of a designer (as shown in figure 1, three backlight modules a, b and c), and no guidance method exists, so that the distance between the LED lamps is different, the size of the dark area of the light emitting angle of the LED lamps is different, the arrangement and the debugging of the mesh points of the light guide plate are difficult, and finally, the visual effect of the liquid crystal display screen is bright and dark. Therefore, it is needed to provide a method for calculating the distance between the LED lamps of the backlight module, so as to more efficiently and uniformly place the LED lamps and improve the quality of the lcd. Disclosure of Invention The invention aims to provide an LED lamp arrangement method of a side-in type backlight module and the backlight module thereof, so as to improve design efficiency and product quality. In order to achieve the above purpose, the technical scheme adopted by the invention is as follows: in one aspect, a method for arranging LED lamps of a side-entry backlight module is provided, including the following steps: (1) Measuring and obtaining the visible area width L of the backlight module, and determining the number N of LED lamps required to be arranged; (2) Calculating to obtain a lamp distance P through the formula P=L/(N+0.25), wherein when N=1, the lamp distance P is calculated according to P=L/2; (3) The LED lamps are arranged in a row, (3.1) When N is an odd number, A. Drawing a central line M along the longitudinal direction of the visible area width L; b. an LED lamp is arranged at the edge of the light guide plate and at the position of the central line M to serve as a reference lamp; c. Taking the reference lamp as the center, arranging (N-1)/2 LED lamps at intervals P of the LED lamps in a symmetrical mode at the edge of the light guide plate and at the left and right sides of the center line M; (3.2) when N is an even number, A. Drawing a central line M along the longitudinal direction of the visible area width L; b. The first LED lamp and the second LED lamp are respectively arranged at the edge of the light guide plate and at the positions of the left side and the right side of the central line M, which are spaced by P/2 of the central line M; c. and (2) LED lamps are respectively arranged at the edges of the light guide plate according to the lamp spacing P in a symmetrical mode on the left side and the right side of the central line M by taking the first LED lamp and the second LED lamp as references. Preferably, the backlight module is a square window backlight module. On the other hand, the side-in type backlight module comprises a substrate, an LED lamp, a light guide plate, a light guide lattice point and an optical film, wherein the LED lamp, the light guide plate, the light guide lattice point and the optical film are fixed on the substrate, the substrate is positioned