CN201047879Y

CN201047879Y - Light conducting plate structure of backlight module

Info

Publication number: CN201047879Y
Application number: CNU2007200698292U
Authority: CN
Inventors: 蔡宗霖
Original assignee: Solid State Opto Ltd
Current assignee: Solid State Opto Ltd
Priority date: 2007-05-15
Filing date: 2007-05-15
Publication date: 2008-04-16
Anticipated expiration: 2017-05-15

Abstract

The utility model relates to a light-guiding board structure of a poor-light module, which provides at least one first groove continuously extending from one side to the other relative side on a first plane of the light-guiding board by an integrated way, or even provides a second groove continuously extending from one side to the other relative side and interlacing with the first groove. The distance from the bottom surface of the first and the second grooves to a second plane is less than the distance from the bottom surface of the first and the second grooves to the first plane, so as to divide the first plane of the light-guiding board into a plurality of sections. The sides of the light-guiding board of each section are provided with a lamp-house. Each section can transmit the light according to the scheduled order by controlling the radiation order of the lamp-house. The utility model is easier in producing than the prior way of combining a plural light-leading board, thereby the manufacturing cost can be lowered.

Description

The light conducting plate structure of backlight module

Technical field

The utility model relates to a kind of backlight module, relates in particular to the light conducting plate structure of this backlight module.

Background technology

The backlight module that generally is used for LCD includes a light guide plate, first side of light guide plate is provided with a reflector plate, second side surface opposite then is provided with the plural blooming piece of being made up of diffusion sheet and prismatic lens etc., periphery in those assemblies surrounds with a housing again, the side of light guide plate then is provided with light source, the light that light source sent is entered by the side projection of light guide plate, and part light is reflected by reflector plate, penetrates by diffusion sheet and prismatic lens in regular turn again.

General light guide plate is the plate body of continuous morphology, therefore, light is to present continual conduction in light guide plate, that is the light that is presented on whole light guide plate is comparatively even, when being applied to the LCD panel, same meeting presents near identical brightness each picture of LCD panel.

Yet a LCD picture sometimes is not identical brightness in itself completely; For example, the buildings of the Hei An night sky and white just needs the contrast of light and shade; Therefore, in order to make the LCD picture obtain more beautiful, have more relief effect, present existing backlight module is designed to have some sections and the structure that can distinguish leaded light, the light guide plate side that each separates is separately installed with light source, the picture of luminous sequential by those light sources of electronic circuit control to cooperate LCD to manifest again, allow in essence should be dark picture darker, the picture that should become clear is more bright in essence.

Existing backlight module with segmentation leaded light, its architectural feature is to adopt special technique that the light guide plate of some small sizes is connected together, and make its joint can't leaded light, thereby the light source that is located at each section light guide plate only can be conducted light in this section light guide plate.

But this structure is owing to being employing and connecing mode manufacturing that so processing procedure is more loaded down with trivial details, manufacturing cost is higher.

Summary of the invention

The utility model technical issues that need to address have provided a kind of light conducting plate structure of backlight module, are intended to solve the above problems.

In order to solve the problems of the technologies described above, the utility model is achieved through the following technical solutions:

The utility model comprises: light guide plate is to have conducting light character and have first plane that is positioned at relative both sides and the plate body on second plane; First plane of described light guide plate is provided with one at least from extending to first groove of relative another side on one side continuously, the distance on the bottom surface of this first groove to this second plane is separated out plural section less than the distance of this first trench bottom surfaces to this first plane at this first plane area.

Compared with prior art, the beneficial effects of the utility model are: one-body molded mode is provided with groove in a light guide plate, light guide plate is separated out some sections, than having employing now and connecing mode that the mode of plural light guide plate combination is more simple and easy on making, thereby be minimized manufacturing cost.

Description of drawings

Fig. 1 is for showing the stereographic map of first embodiment of the present utility model.

Fig. 2 is the plan view of Fig. 1, and each the section side that is presented at light guide plate is provided with light source.

Fig. 3 is the section plan along the A-A secant of Fig. 2, and it shows that the embodiment section of this first groove is a V-arrangement.

Fig. 4 is the shape of a hoof for the embodiment section that shows this first groove.

Fig. 5 is trapezoidal for the embodiment section that shows this first groove.

Fig. 6 is a circular arc for the embodiment section that shows this first groove.

Fig. 7 is for showing the stereographic map of second embodiment of the present utility model.

Fig. 8 is the plan view of Fig. 7, and each the section side that is presented at light guide plate is provided with light source.

Embodiment

Below in conjunction with accompanying drawing and embodiment the utility model is described in further detail:

A wherein feature of the present utility model, be to adopt one-body molded mode to be provided with one at least on first plane of a light guide plate from extending to first groove of relative another side on one side continuously, even be provided with again from extend to continuously on one side relative another side and with the second staggered groove of this first groove, described first, the distance on the bottom surface of two grooves to this second plane less than this first, two trench bottom surfaces are to the distance on this first plane, be separated out some sections in order to first plane area with light guide plate, the light guide plate side of each section can be installed light source, by controlling the luminous sequential of this light source, get so that described each section is complied with predetermined sequential leaded light.

Another feature of the present utility model, be described first groove or second groove section can for V-arrangement, the shape of a hoof, trapezoidal, circular arc ... etc. geometric configuration.

Another feature of the present utility model is that the surface of described first groove and second groove can be in conjunction with the design of optical texture, to improve the optical uniformity of seam crossing.

By Fig. 1, Fig. 2, Fig. 3 as seen, be to adopt the described light guide plate 1 of made with good leaded light character, it is to have first plane 11 that is positioned at relative both sides and the plate body on second plane 12, and be provided with one at least on first plane 11 of described light guide plate 1 from extending to first groove 111 of relative another side on one side continuously in one-body molded mode, the distance on the bottom surface of this first groove 111 to this second plane 12 is less than the distance on this first groove, 111 bottom surfaces to this first plane 11, in order to separate out plural section on this first plane 11.Described one-body molded, can in this light guide plate 1 of ejection formation, go out those first grooves 111 by straight forming, also light guide plate 1 can be shaped to a plane plate after, cut described first groove 111 on its first plane 11 in the secondary processing mode again.

Preferred embodiment of the present utility model is to make those first grooves 111 parallel to each other, to separate out a plurality of rectangular section.First embodiment of described first groove 111 can be that section is V-arrangement (as shown in Figure 3), also can be that section is the shape of a hoof (as shown in Figure 4), also can be that section is trapezoidal (as shown in Figure 5), also can be that section is circular arc (as shown in Figure 6).In addition, in order to allow more soft consideration after the light penetration light guide plate, optical texture 13 can be set up in the surface of described first groove 111; For example laid a plurality of points in described first flute surfaces with processing modes such as sandblast, printing or non-printings; By those points constitute can reflective/refractive power optical texture, bad to improve groove place concealed wire and optical uniformity.2 sides of being located at each section of light guide plate 1 as illustrated in fig. 2 of plural number light source, to form the light source projects effect of one dimension, by controlling the luminous sequential of those light sources 2, so that described each section according to predetermined sequential leaded light, required with the thin portion brightness that cooperates the LCD picture.

As shown in Figure 7, the utility model also can be according to structure shown in Figure 1, and with aforesaid manufacturing or cooperation process technology, at least be provided with one from extending to relative another side on one side continuously on first plane 11 of light guide plate, and with the second staggered groove 112 of this first groove 111, the distance on the bottom surface of this second groove 112 to this second plane 12 is less than the distance on this second groove, 112 bottom surfaces to this first plane 11, to separate out plural section on this first plane 11.Preferred embodiment of the present utility model be to make those first grooves 111 parallel to each other, and second groove 112 is parallel to each other, to separate out a plurality of rectangular section.The section configuration of described second groove 112, geometric configuration such as same can be V-arrangement, the shape of a hoof, trapezoidal or circular arc, and can set up aforesaid optical texture on the surface of this second groove 112 equally.2 sides of being located at each section of light guide plate 1 as illustrated in fig. 8 of plural number light source, to form the light source projects effect of two dimension, by controlling the luminous sequential of those light sources 2, so that described each section according to predetermined sequential leaded light, required with the thin portion brightness that cooperates the LCD picture.

The above only is in order to explain the preferred embodiment of the utility model, is not that attempt is done any formal restriction to the utility model according to this; So all have in following relevant any modification or the change done of identical spirit, all must be included in the protection domain of the present utility model.

Claims

1. the light conducting plate structure of a backlight module, this light guide plate is to have conducting light character and have first plane that is positioned at relative both sides and the plate body on second plane, it is characterized in that: Yi Bian first plane of described light guide plate is provided with one at least from extending to first groove of relative another side continuously, the distance on the bottom surface of this first groove to this second plane is separated out plural section less than the distance of this first trench bottom surfaces to this first plane at this first plane area.

2. the light conducting plate structure of backlight module according to claim 1 is characterized in that: described first groove is two when above, and those first grooves are parallel to each other.

3. the light conducting plate structure of backlight module according to claim 1 and 2, it is characterized in that: Yi Bian first plane of described light guide plate is provided with one at least from extending to relative another side continuously, and with the second staggered groove of this first groove, the distance on the bottom surface of this second groove to this second plane is separated out plural section less than the distance of this second trench bottom surfaces to this first plane at this first plane area.

4. the light conducting plate structure of backlight module according to claim 3 is characterized in that: described second groove is two when above, and those second grooves are parallel to each other.

5. the light conducting plate structure of backlight module according to claim 1, it is characterized in that: the section of described first groove is a V-arrangement.

6. the light conducting plate structure of backlight module according to claim 1, it is characterized in that: the section of described first groove is the shape of a hoof.

7. the light conducting plate structure of backlight module according to claim 1, it is characterized in that: the section of described first groove is trapezoidal.

8. the light conducting plate structure of backlight module according to claim 1, it is characterized in that: the section of described first groove is a circular arc.

9. according to the light conducting plate structure of claim 5 or 6 or 7 or 8 described backlight modules, it is characterized in that: the surface of described first groove is provided with optical texture.

10. the light conducting plate structure of backlight module according to claim 3, it is characterized in that: the section of described first groove and second groove is a V-arrangement.

11. the light conducting plate structure of backlight module according to claim 3 is characterized in that: the section of described first groove and second groove is the shape of a hoof.

12. the light conducting plate structure of backlight module according to claim 3 is characterized in that: the section of described first groove and second groove is trapezoidal.

13. the light conducting plate structure of backlight module according to claim 3 is characterized in that: the section of described first groove and second groove is a circular arc.

14. the light conducting plate structure of backlight module according to claim 1 is characterized in that: the surface of described first groove and second groove is provided with optical texture.