CN202453612U

CN202453612U - Direct type LED liquid crystal module

Info

Publication number: CN202453612U
Application number: CN2011205212925U
Authority: CN
Inventors: 陈科仲; 江友才
Original assignee: Sichuan Changhong Electric Co Ltd
Current assignee: Sichuan Changhong Electric Co Ltd
Priority date: 2011-12-14
Filing date: 2011-12-14
Publication date: 2012-09-26
Anticipated expiration: 2021-12-14

Abstract

The utility model discloses a direct type LED (light-emitting diode) liquid crystal module, relates to an LED lamp strip suitable as a backlight source in the direct type LED liquid crystal module, and aims to effectively solve the problem that the liquid crystal module is optically non-uniform due to LED failure in the direct type LED liquid crystal module. The direct type LED liquid crystal module is characterized in that a backlight comprises a plurality of sets of LED lamp strings, the LEDs on each set of the LED lamp strings are in staggered arrangement, instead of linear arrangement; and the current directions in any two adjacent LED lamp strings are opposite. According to the direct type LED liquid crystal module disclosed by the utility model, the optical non-uniformity caused by LED failures in the liquid crystal module can be effectively reduced, and the current directions in any two adjacent LED lamp strings are opposite, so as to increase electromagnetic coupling and effectively reduce the electromagnetic leakage of the LED lamp strings.

Description

A kind of straight-down negative LED liquid crystal module

Technical field

The utility model relates to a kind of directly-down liquid crystal module, particularly backlight in the straight-down negative LED liquid crystal module.

Background technology

LED-backlit TV light inlet mode in the market mainly contains two kinds: side entering type and straight-down negative.Side entering type be the LED lamp string as light source be installed in liquid crystal display around (bilateral and monolateral branch is arranged usually), and straight-down negative is the positive back side that is installed in liquid crystal display as the LED lamp string of backlight.

Existing straight-down negative LED lamp string generally is the positive back side that is arranged in liquid crystal display with the mode of vertical or level; LED on every group of LED lamp string is located along the same line; Like Fig. 1, be aided with blooming pieces such as diffuser plate, diffusion barrier, prismatic lens again, thereby obtain uniform bright dipping; If when the situation that not work appear in several continuous LED or 1 group of LED lamp string is arranged, the situation of significant indicative of local optical disappearance will appear in the module front.

The utility model content

The goal of the invention of the utility model is: the problem to above-mentioned existence provides a kind of directly-down liquid crystal module LED that can effectively solve the uneven problem of liquid crystal module optics that causes because of inefficacies such as LED.

The technical scheme that the utility model adopts is such: a kind of straight-down negative LED liquid crystal module, comprise some groups of LED lamp strings, and the LED on every group of LED lamp string is not on same straight line.

Preferably, among any adjacent 3 LED, 1 LED and other 2 LED dislocation are arranged on said every group of LED lamp string; And two adjacent groups LED lamp string is parallel to each other everywhere arbitrarily, and the spacing between all two adjacent groups LED lamp strings equates.

Preferably, the current opposite in direction in arbitrarily adjacent two groups of LED lamp strings.。

In sum, owing to adopted technique scheme, the beneficial effect of the utility model is:

1, the arrangement mode of LED lamp string has effectively reduced the optical heterogeneity that lost efficacy and cause because of LED in the liquid crystal module in the utility model.

2, two groups of adjacent LED lamp strings flow reverse in the utility model; Strengthen the EM coupling of LED lamp string, effectively reduce electromagnetic leakage, reduce module or TV complete machine risk at the EMI test failure; Reduce test rectification original, make module to introduce to the market as soon as possible.

Description of drawings

Fig. 1 is a liquid crystal module LED arranging situation in the prior art.

Fig. 2 is the utility model first embodiment liquid crystal module LED arranging situation.

Fig. 3 is the utility model second embodiment liquid crystal module LED arranging situation.

Fig. 4 is a kind of distortion of the utility model second embodiment liquid crystal module LED arranging situation.

Fig. 5 is the utility model the 3rd embodiment liquid crystal module LED.

Embodiment

Below in conjunction with accompanying drawing, the utility model is done detailed explanation.

For the purpose, technical scheme and the advantage that make the utility model is clearer,, the utility model is further elaborated below in conjunction with accompanying drawing and embodiment.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.

As shown in Figure 2, the LED of liquid crystal module comprises the LED lamp string of many groups level or homeotropic alignment, and per two adjacent LED are not on the same straight line but are staggered on the LED lamp string.

Like Fig. 3, shown in Figure 4, among arbitrarily adjacent 3 LED, 1 LED and two other LED that are in non-centre position are staggered on each LED lamp string.

First, second embodiment of the utility model can effectively reduce the optical heterogeneity that lost efficacy and cause because of LED in the liquid crystal module; When a LED in the liquid crystal module even one group of LED lamp string inefficacy; Owing to the LED lamp on every group of LED lamp string is staggered, do not have tangible optics failed areas in the front of liquid crystal display.

Like Fig. 5, present embodiment is on the basis of first, second embodiment, and the LED pole reversal in the two adjacent groups LED lamp string is arranged, thereby the LED drive current is in the opposite direction.Be not difficult to learn that the induced field direction that electric current produces in the two adjacent groups LED lamp string is opposite in other location of removing between the two lamp strings, cancel each other out, and the regional EM coupling between two lamp strings strengthens, the electromagnetic leakage of so effective reduction LED lamp string.

Among above-mentioned any one embodiment, two adjacent groups LED lamp string distance is by different liquid crystal module the requirement of LED lamp light mixing distance to be confirmed.

The above is merely the preferred embodiment of the utility model; Not in order to restriction the utility model; Any modification of being done within all spirit and principles at the utility model, be equal to replacement and improvement etc., all should be included within the protection domain of the utility model.

Claims

1. straight-down negative LED liquid crystal module, its back of the body lamp comprises some groups of LED lamp strings, it is characterized in that, and the LED on every group of LED lamp string is not on same straight line.

2. a kind of straight-down negative LED liquid crystal module according to claim 1 is characterized in that, among any adjacent 3 LED, 1 LED and other 2 LED dislocation are arranged on said every group of LED lamp string; And two adjacent groups LED lamp string is parallel to each other everywhere arbitrarily, and the spacing between all two adjacent groups LED lamp strings equates.

3. a kind of straight-down negative LED liquid crystal module according to claim 1 and 2 is characterized in that, the current opposite in direction in two groups of adjacent arbitrarily LED lamp strings.