CN201072483Y - High-efficiency high-brilliance low-cost backlight module - Google Patents

Abstract

The utility model provides a back-light module with high efficiency, high brilliance and low cost. The upper end surface of a light guide is convex or concave and provided with more than one vertically ranked light guide parts, while the lower end surface of the light guide is convex or concave and provided with more than one horizontally ranked light guide parts; the light guide parts, which have functions of light focusing, light intensifying and light diffusion for equalizing the light, arranged at the lower end surface and the upper end surface are correspondingly matched with each other, and the brilliance of the light source emitted from the light guide is far higher than that of traditional back-light module, so the utility model has high efficiency and high brilliance and can cut down the using of sheets for intensifying the light source, thus reaching the target of lowering the cost.

Description

The high briliancy of high-level efficiency is backlight module cheaply

Technical field

The utility model provides the high briliancy of a kind of high-level efficiency backlight module cheaply, refers to that especially a kind of high-level efficiency, high briliancy and minimizing strengthen the low cost structure of the sheet material use of light source.

Background technology

General backlight module, (seeing also shown in Figure 1), it is mainly by a light guide plate 11, one reflector plate 12, one light supply apparatus 13 and a light source cover 14 constitute, and this kind only sees through the light source of light source cover 14 shield light source apparatus 13, after making the light source incident light guide plate 11 of its light supply apparatus 13, directly refract to the general backlight module of display panels, it provides the light source briliancy that gives display panels can't satisfy consumer's visual perception now, cause many dealers for improving the light source briliancy of display panels, and in the newly-increased prism sheet material (figure does not show) of enhancing light source miscellaneous more than several of this light guide plate 11 tops research and development, reach the purpose that improves its light source briliancy of display panels, so, be used in these light guide plate 11 tops and set up several above sheet materials that strengthens light source, reach the method that improves its light source briliancy of display panels, it is time-consuming often easily to cause group to establish, weight increases, cost increases, problems such as power loss and the big accommodation space of need take place;

Therefore, this case creator is urgently to think to be improved innovation in view of the above-mentioned every shortcoming of being derived of commonly using, and after concentrating on studies through taking great pains to attain one's goal for many years, and then research and develop the high briliancy of this a kind of high-level efficiency backlight module cheaply.

The utility model content

The purpose of this utility model is to provide the high briliancy of a kind of high-level efficiency backlight module cheaply, refers to that especially a kind of high-level efficiency, high briliancy and minimizing strengthen the low cost structure of the sheet material use of light source.

The high briliancy of the utility model high-level efficiency technical scheme of backlight module cheaply is:

It comprises: a light guide plate; One reflector plate, it places this light guide plate below; One light supply apparatus, it is located at light guide plate one side; One light source cover, it is located at this light supply apparatus one side; It focuses on: this light guide plate upper surface convexes with the light guide section that is homeotropic alignment more than, and this light guide plate lower surface convexes with and is horizontal light guide section more than one again.

One light guide plate upper surface is protruding or be concaved with the light guide section that is homeotropic alignment more than, this light guide plate lower surface is protruding or be concaved with and be horizontal light guide section more than one again, by the set tool optically focused in this light guide plate lower surface and upper surface, add lustre to and all corresponding collocation of light guide section of the effect of light of scattering, and with the refract light source with this light guide plate of incident, giving secondary souce amplifies and even scattering, make its light source briliancy from this light guide plate outgoing, exceed more than ten of percentage more than the formula of habit backlight module, and then reach high-level efficiency, high briliancy and minimizing strengthen the low-cost effect of the sheet material use of light source.

The high briliancy of the utility model high-level efficiency beneficial effect of backlight module cheaply is: 1, source efficiency is preferable.2, the sheet material that does not need extra collocation to strengthen light source strengthens light source.3, reduce material cost greatly.

Description of drawings

Fig. 1 is the schematic side view of general backlight module;

Fig. 2 is a schematic side view of the present utility model;

Fig. 3 is the light guide section synoptic diagram of the utility model light guide plate upper surface;

Fig. 4 implements synoptic diagram for the utility model side-looking action;

Fig. 5 A-D is that synoptic diagram is implemented in its light guide section collocation of the utility model light guide plate;

Fig. 6 is the another enforcement side view of the utility model;

Fig. 7 A, B are that the utility model one is implemented side view again.

[figure number explanation]

11.. light guide plate 12.. reflector plate

13.. light supply apparatus 14.. light source cover

21.. light guide plate 211. light guide sections

212. light guide section 213. light guide sections

214. light guide section 22.. reflector plate

23.. light supply apparatus 24.. light source cover

25.. diffusion sheet 26... prismatic lens

261... micro-prism structure 27... screening glass

3... light source 41... first hypotenuse

42... the second hypotenuse 411..., first angle

421... second angle

Embodiment

See also shown in Figure 2ly, the utility model provides the high briliancy of a kind of high-level efficiency backlight module cheaply, comprises:

One light guide plate 21, its these light guide plate 21 upper surfaces convex with the light guide section 211 (seeing also shown in Figure 3) that is homeotropic alignment more than, these light guide section 211 tool optically focused, add lustre to and the equal effect of light of scattering, these light guide plate 21 lower surfaces convex with the light guide section 212 that is horizontal more than again, these light guide section 212 tool optically focused, add lustre to and the equal effect of light of scattering.

One reflector plate 22, it places this light guide plate 21 belows, and the source reflection that these light guide plate 21 bottom surfaces are exposed returns in the light guide plate 21, and to increase the utilization rate of incident light source, this reflector plate 22 can scattered reflection formula material be base material (as: silver color or a white) also again.

One light supply apparatus 23, it is located at light guide plate 21 1 sides, and this light supply apparatus 23 can be one or more luminophor (as: light emitting diode, bulb), and sends the required light source of LCD by this luminophor.

One light source cover 24, it is located at this light supply apparatus 23 1 sides, and this light source cover 24 is ambient light source device 23 partly, and goes in this light guide plate 21 with the light refraction that this light supply apparatus 23 is sent.

Please cooperate and consult shown in Fig. 2,4, when the light source 3 of light supply apparatus 23 enters light guide plate 21, after giving for the first time optically focused and add lustre to by the light guide section 212 of these light guide plate 21 lower surfaces, its light source 3 is evenly scattered in the light guide section 211 of light guide plate 21 upper surfaces, give the optically focused second time, add lustre to and light source 3 is evenly scattered via light guide section 211 again, and make light source 3 briliancy from 21 outgoing of this light guide plate, exceed more than 10 more than the formula of habit backlight module, and then reach the low-cost purpose that high-level efficiency, high briliancy and minimizing strengthen the sheet material use of light source.

Please consult shown in Fig. 5 A-C again, be light guide plate 21 its light guide sections 211 that can reach above-mentioned the utility model purpose effect, synoptic diagram is implemented in 212 collocation, wherein, the light guide section 211 of these light guide plate 21 upper surfaces and lower surface, 212, can be respectively with the concavo-concave complementation that is arranged with and set (seeing also shown in Fig. 5 A), the concavo-convex complementation that is arranged with and is convexly equipped with sets (seeing also shown in Fig. 5 B), and the convex-concave complementation that is convexly equipped with and is arranged with sets (seeing also shown in Fig. 5 C), and the light guide section 212 of lower surface has first, two hypotenuses 41,42 continuous sawtooth groove, it is first years old, two hypotenuses 41,42 form first of different angles with light guide plate 21, two angles 411,421; Can be one group also, and have and be spaced, shown in Fig. 5 D by per three light guide sections 212.

See also shown in Figure 6, be the further embodiment of the utility model, wherein, can set up more than one corresponding diffusion sheet 25 on this light guide plate 21, by the diffusion point more than two set on this diffusion sheet 25 (figure does not show), and will giving homogenising, and then reach the display effect that makes display and be equal nicely rounded effects of melting from the high briliancy light source of light guide plate 21 outgoing.

See also shown in Fig. 7 A, the B, for the utility model one goes on foot embodiment again, wherein, can set up more than one corresponding prismatic lens 26 on this light guide plate 21, it is arranged in light guide plate 21 tops, be provided with the micro-prism structure 261 that is homeotropic alignment more than above or below this prismatic lens 26, by the refractive power and the optically focused correcting of more than one micro-prism structure 261, and with directivity that increases the outgoing light source and the purpose that reaches the lifting briliancy; Certainly, this prismatic lens 26 also can further be provided with a screening glass 27.

For making the utility model more show its progressive and practicality, hereby with commonly use that to do a comparative analysis as follows:

Commonly use disappearance: 1, source efficiency deficiency. 2, the sheet material that needs extra collocation to strengthen light source gives To strengthen light source. 3, increase material cost.

The utility model advantage: 1, source efficiency is better. 2, do not need extra collocation to strengthen light source Sheet material strengthen light source. 3, greatly reduce material cost.

Claims (9)

1. the high briliancy of high-level efficiency backlight module cheaply comprises:

One light guide plate;

One reflector plate, it places this light guide plate below;

One light supply apparatus, it is located at light guide plate one side;

One light source cover, it is located at this light supply apparatus one side;

It is characterized in that: this light guide plate upper surface convexes with the light guide section that is homeotropic alignment more than, and this light guide plate lower surface convexes with and is horizontal light guide section more than one again.

2. the high briliancy of high-level efficiency backlight module cheaply according to claim 1 is characterized in that this light guide plate upper surface is concaved with the light guide section that is homeotropic alignment more than.

3. the high briliancy of high-level efficiency backlight module cheaply according to claim 1 is characterized in that this light guide plate lower surface is concaved with and is horizontal light guide section more than one.

4. the high briliancy of high-level efficiency backlight module cheaply according to claim 1 is characterized in that the light guide section of this light guide plate lower surface has the continuous sawtooth groove of first and second hypotenuse, and its first and second hypotenuse and light guide plate form first and second angle.

5. the high briliancy of high-level efficiency backlight module cheaply according to claim 1 is characterized in that in the light guide section of this light guide plate lower surface, per three light guide sections are one group, and has and be spaced.

6. the high briliancy of high-level efficiency backlight module cheaply according to claim 1 is characterized in that more than one diffusion sheet is set up in this light guide plate top.

7. the high briliancy of high-level efficiency backlight module cheaply according to claim 1 is characterized in that more than one prismatic lens is set up in this light guide plate top.

8. as the backlight module cheaply of the high briliancy of high-level efficiency as described in the claim 7, it is characterized in that, be provided with the micro-prism structure that is homeotropic alignment more than above or below this prismatic lens.

9. the high briliancy of high-level efficiency backlight module cheaply according to claim 1 is characterized in that more than one prismatic lens is set up in this light guide plate top, and the prismatic lens top then has additional a screening glass.

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