CN206771101U

CN206771101U - A kind of backlight

Info

Publication number: CN206771101U
Application number: CN201720456601.2U
Authority: CN
Inventors: 戴佳民
Original assignee: Truly Semiconductors Ltd
Current assignee: Truly Semiconductors Ltd
Priority date: 2017-04-27
Filing date: 2017-04-27
Publication date: 2017-12-19
Anticipated expiration: 2027-04-27

Abstract

The utility model discloses a kind of backlight, including framework, be arranged in the framework light guide plate, be arranged on the first lamp bar of the light guide plate wherein one side, be provided with reflector plate on the dot surface of the light guide plate；The dot surface of the light guide plate is the first cambered surface of indent, and first cambered surface is towards the first lamp bar.The backlight can improve utilization rate and the brightness of light, and more save raw materials for production.

Description

A kind of backlight

Technical field

It the utility model is related to field of backlights, more particularly to a kind of backlight.

Background technology

It is existing back light source structure as shown in Figure 1, the main incidence surface for including light guide plate 1 ', being arranged on light guide plate 1 ' Lamp bar 2 ', be arranged on light guide plate 1 ' dot surface 12 ' reflector plate 3 ', the light that lamp bar 2 ' is sent can be divided into by direction upwards, It is parallel and downward three kinds, wherein, upward light directly projects from the exiting surface 11 ' of light guide plate 1 ', and downward light is by leading The effect of light directing site and reflector plate 3 ' on the dot surface 12 ' of tabula rasa 1 ' reflect after from the exiting surface of light guide plate 1 ' 11 ' project, and parallel light wastes because not reflected.

Utility model content

In order to solve above-mentioned the deficiencies in the prior art, the utility model provides a kind of backlight.The backlight can improve The utilization rate of light and brightness, and more save raw materials for production.

Technical problem to be solved in the utility model is achieved by the following technical programs：

A kind of backlight, including framework, be arranged in the framework light guide plate, be arranged on the light guide plate wherein side First lamp bar in face, reflector plate is provided with the dot surface of the light guide plate；The dot surface of the light guide plate is the first of indent Cambered surface, first cambered surface is towards the first lamp bar.

Further, half of the sagitta of first cambered surface no more than the profile height of the light guide plate.

Further, the light guide plate another side relative with the first lamp bar is provided with the second lamp bar, first arc Face is towards first lamp bar and the second lamp bar.

Further, the dot surface of the light guide plate is indent and continuous first cambered surface and the second cambered surface, described first Cambered surface is towards the first lamp bar, and second cambered surface is towards the second lamp bar.

Further, one of sagitta no more than the profile height of the light guide plate of first cambered surface and the second cambered surface Half.

Further, the exiting surface of the light guide plate is plane or the 3rd cambered surface of evagination.

Further, an at least optical film is provided with the exiting surface of the light guide plate.

Further, it is provided with anti-dazzling screen on the framework.

The utility model has the advantages that：The backlight by the dot surface of the light guide plate by being designed to arc Face, the parallel rays that first lamp bar is sent also can be by the light directing sites and reflector plate on the dot surface of the light guide plate Reflected, and projected from the exiting surface of the light guide plate, improve the light utilization and backlight of first lamp bar Overall brightness, and the making material of the light guide plate can be reduced, reduce the production cost of backlight.

Brief description of the drawings

Fig. 1 is the schematic diagram of existing backlight；

Fig. 2 is the schematic diagram of backlight provided by the utility model；

Fig. 3 is the schematic diagram of another backlight provided by the utility model；

Fig. 4 is the schematic diagram of another backlight provided by the utility model；

Fig. 5 is the schematic diagram of another backlight provided by the utility model；

Fig. 6 is the schematic diagram of another backlight provided by the utility model；

Fig. 7 is the schematic diagram of another backlight provided by the utility model.

Embodiment

The utility model is described in detail with reference to the accompanying drawings and examples.

As shown in Fig. 2 a kind of backlight, including framework, be arranged in the framework light guide plate 1, be arranged on described lead First lamp bar 21 of the wherein one side of tabula rasa 1, reflector plate 3 is provided with the dot surface 12 of the light guide plate 1；The light guide plate 1 Dot surface 12 be indent the first cambered surface, first cambered surface is towards the first lamp bar 21.

By the way that the dot surface 12 of the light guide plate 1 is designed into cambered surface, first lamp bar 21 is sent flat the backlight Row light can also be reflected by the light directing site on the dot surface 12 of the light guide plate 1 and reflector plate 3, and from the leaded light The exiting surface 11 of plate 1 projects, and improves the light utilization of first lamp bar 21 and the overall brightness of backlight, and The making material of the light guide plate 1 can be reduced, reduces the production cost of backlight.

Preferably, the sagitta of first cambered surface no more than the profile height of the light guide plate 1 half, due to described the The sagitta of one cambered surface is below or equal to the half of the profile height of the light guide plate 1, and backlight is in the use process of reality In, it can all increase the diaphragm of corresponding function on the exiting surface 11 of the light guide plate 1（Including but not limited to diffusion barrier, bright enhancement film Deng）, when light projects from the exiting surface 11 of the light guide plate 1, due to the refraction action of diaphragm, a part of light can enter again Enter in the light guide plate 1 and travel on the one end of the dot surface 12 away from first lamp bar 21, finally occur second Reflect and project the light guide plate 1, will not be thus cambered surface due to the dot surface 12, and cause the other end light of backlight It is even that brightness unevenness occurs in line deficiency.

In order to further improve the brightness of the backlight, and solve the dot surface 12 be caused by cambered surface it is bright it is dark not The problem of uniform, the light guide plate 1 another side relative with the first lamp bar 21 are provided with the second lamp bar 22, first cambered surface Towards the lamp bar 22 of the first lamp bar 21 and second, such as Figure 4 and 5.

Or the dot surface 12 of the light guide plate 1 is indent and continuous first cambered surface and the second cambered surface, first arc Face is towards the first lamp bar 21, and second cambered surface is towards the second lamp bar 22；The sagitta of first cambered surface and the second cambered surface is not More than the half of the profile height of the light guide plate 1, such as Fig. 6 and 7.

The exiting surface 11 of the light guide plate 1 can be plane（Such as Fig. 2,4 and 6）Or the 3rd cambered surface of evagination（Such as Fig. 3,5 With 7）, preferably the 3rd cambered surface, because the exiting surface 11 of the light guide plate 1 to be designed as to the 3rd cambered surface of evagination, can increase The thickness of the light guide plate 1, especially increase the thickness at the top of the cambered surface of the dot surface 12, prevent the light guide plate 1 For dot surface 12 after cambered surface is designed as, thickness is too small, and support force is inadequate, causes the light guide plate 1 to be broken under stress.

An at least optical film is provided with the exiting surface 11 of the light guide plate 1, in general, the light extraction of the light guide plate 1 Diffusion barrier, lower bright enhancement film and upper bright enhancement film can be disposed with face 11, still, the type and quantity of the optical film can bases , should not be as limit depending on actual demand.

Anti-dazzling screen is provided with the framework, the anti-dazzling screen is preferably two-sided to have viscosity, its one backwards to the framework Side is black, is black or white or other colors towards the side of the framework.

Embodiment described above only expresses embodiment of the present utility model, and its description is more specific and detailed, but simultaneously Therefore the limitation to the utility model patent scope can not be interpreted as, as long as using equivalent substitution or the form of equivalent transformation institute The technical scheme of acquisition, it all should fall within the scope of protection of the utility model.

Claims

1. a kind of backlight, including framework, be arranged in the framework light guide plate, be arranged on the light guide plate wherein one side The first lamp bar, be provided with reflector plate on the dot surface of the light guide plate；It is characterized in that：The dot surface of the light guide plate is interior The first recessed cambered surface, first cambered surface is towards the first lamp bar.

2. backlight according to claim 1, it is characterised in that the sagitta of first cambered surface is not more than the light guide plate Profile height half.

3. backlight according to claim 1, it is characterised in that the light guide plate another side relative with the first lamp bar It is provided with the second lamp bar, first cambered surface is towards first lamp bar and the second lamp bar.

4. backlight according to claim 3, it is characterised in that the dot surface of the light guide plate is replaced with into indent and company Continuous the first cambered surface and the second cambered surface, first cambered surface is towards the first lamp bar, and second cambered surface is towards the second lamp bar.

5. backlight according to claim 4, it is characterised in that the sagitta of first cambered surface and the second cambered surface is little In the half of the profile height of the light guide plate.

6. according to any described backlight in claim 1-5, it is characterised in that the exiting surface of the light guide plate be plane or 3rd cambered surface of evagination.

7. backlight according to claim 1, it is characterised in that an at least light is provided with the exiting surface of the light guide plate Learn film.

8. backlight according to claim 1, it is characterised in that be provided with anti-dazzling screen on the framework.