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

Abstract

The utility model provides a high luminance low-cost backlight module of high efficiency, the protruding or concave light guide part that is vertical arrangement that is more than one of which light guide plate up end is equipped with, the protruding or concave light guide part that is horizontal arrangement that is more than one of terminal surface is equipped with again under this light guide plate, by the light guide part that terminal surface and up end established have spotlight, the light guide part of the efficiency of intensifying and scattering average light corresponds the collocation, and make the light source brilliance from this light guide plate outgoing, it is more than ten percent more than of a specified duration far than the study formula backlight module, and then reach high efficiency, high brilliance and reduce the low-cost mesh of the sheet use of reinforcing light source.

Description

High-efficiency, high-brightness, low-cost backlight module

technical field

The utility model provides a high-efficiency, high-brightness and low-cost backlight module, especially a low-cost structure with high efficiency, high luminance and reduced use of sheet materials for enhancing light sources.

Background technique

A general backlight module (see also shown in Figure 1), it is mainly made of a light guide plate 11, a reflective sheet 12, a light source device 13 and a light source cover 14, and this kind only passes through the light source cover 14 to shield the light source device 13 of the light source, the light source of the light source device 13 is incident on the light guide plate 11, and is directly refracted to the general backlight module of the liquid crystal display panel. In order to increase the luminance of the light source of the liquid crystal display panel, many manufacturers have developed several or more various prism sheets (not shown) to enhance the light source above the light guide plate 11, so as to improve the light source of the liquid crystal display panel. The purpose of luminance, however, the method of increasing the luminance of the light source of the liquid crystal display panel by adding a plurality of sheets to enhance the light source on the top of the light guide plate 11 often easily leads to time-consuming assembly, increased weight, increased cost, Problems such as power consumption and the need for large accommodation space occur;

Therefore, in view of the shortcomings derived from the above-mentioned conventional usage, the author of this case is eager to improve and innovate, and after years of painstaking research, he develops this high-efficiency, high-brightness and low-cost backlight module.

Utility model content

The purpose of the utility model is to provide a high-efficiency, high-brightness and low-cost backlight module, especially a high-efficiency, high-brightness and low-cost structure that reduces the use of sheets for enhancing light sources.

The technical scheme of the high-efficiency, high-brightness and low-cost backlight module of the utility model is as follows:

It includes: a light guide plate; a reflector, which is placed under the light guide plate; a light source device, which is arranged on one side of the light guide plate; a light source cover, which is arranged on the side of the light source device; The upper surface of the light plate is convexly provided with more than one vertically arranged light guide portion, and the lower end surface of the light guide plate is convexly provided with more than one horizontally arranged light guide portion.

The top surface of one light guide plate is convex or concave with more than one light guide portion arranged vertically, and the lower end surface of the light guide plate is convex or concave with more than one light guide portion arranged horizontally, through the lower end surface of the light guide plate and The light guide part with the functions of concentrating light, increasing light and diffusing uniform light set on the upper end surface is matched accordingly, so that the refracted light source incident on the light guide plate is amplified and uniformly scattered by the secondary light source, so that it exits from the light guide plate The luminance of the light source is more than ten percent higher than that of conventional backlight modules, thereby achieving high efficiency, high luminance, and low-cost effects of reducing the use of sheet materials for enhancing the light source.

The beneficial effects of the high-efficiency, high-brightness and low-cost backlight module of the utility model are as follows: 1. The efficiency of the light source is better. 2. There is no need to add additional sheets to enhance the light source to enhance the light source. 3. Greatly reduce material cost.

Description of drawings

FIG. 1 is a schematic side view of a general backlight module;

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

Fig. 3 is a schematic diagram of the light guide part on the end surface of the light guide plate of the present invention;

Figure 4 is a schematic diagram of the implementation of the side view action of the utility model;

5A-D are schematic diagrams of the collocation of the light guide part of the light guide plate of the present invention;

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

7A and B are side views of yet another implementation of the present utility model.

【Description of figure number】

11.. Light guide plate 12.. Reflector

13.. Light source device 14.. Light source cover

21.. Light guide plate 211. Light guide part

212. Light guide part 213. Light guide part

214. Light guide part 22.. Reflector

23.. Light source device 24.. Light source cover

25..diffusion sheet 26...prism sheet

261...micro prism structure 27...protective sheet

3...Light source 41...First hypotenuse

42...second hypotenuse 411...first included angle

421...Second angle

Detailed ways

Please refer to Figure 2, the utility model provides a high-efficiency, high-brightness and low-cost backlight module, including:

A light guide plate 21, the upper end surface of the light guide plate 21 is protruded with more than one light guide portion 211 arranged vertically (please refer to FIG. 3 ), and the light guide portion 211 has the functions of concentrating light, increasing light and scattering uniform light , and the lower end surface of the light guide plate 21 is protruded with more than one light guide part 212 arranged horizontally, and the light guide part 212 has the functions of concentrating light, increasing light, and scattering and uniform light.

A reflective sheet 22, which is placed under the light guide plate 21, and reflects the light source exposed on the bottom surface of the light guide plate 21 back into the light guide plate 21, so as to increase the utilization rate of the incident light source, and the reflective sheet 22 can also be diffuse reflection type The material is the substrate (eg silver or white).

A light source device 23, which is arranged on one side of the light guide plate 21, the light source device 23 can be one or more illuminants (such as: light emitting diodes, bulbs), and emit the required light source of the liquid crystal display through the illuminants.

A light source cover 24 is arranged on one side of the light source device 23 , and the light source cover 24 partially surrounds the light source device 23 to refract the light emitted by the light source device 23 into the light guide plate 21 .

Please refer to FIGS. 2 and 4. When the light source 3 of the light source device 23 enters the light guide plate 21, the light guide portion 212 on the lower surface of the light guide plate 21 is used to focus and increase light for the first time, so that the light source 3 Evenly scatter into the light guide part 211 on the upper end surface of the light guide plate 21, and then through the light guide part 211, the light is concentrated for the second time, the light is increased, and the light source 3 is evenly scattered, so that the light source 3 emitted from the light guide plate 21 is luminous. , which is more than 10% higher than conventional backlight modules, thereby achieving high efficiency, high luminance and low cost of reducing the use of sheet materials for enhancing light sources.

Please refer to Fig. 5A-C again, which are schematic diagrams showing the collocation of the light guide parts 211 and 212 of the light guide plate 21 that can achieve the purpose and effect of the present invention. , 212, can respectively be the concavo-concave complementary disposition of concavity setting (please refer to Fig. 5A), concavity concavity and concavity complementary disposition of concavity and protruding provision (refer to Fig. 5B as shown), and the concavo-concave concavity of protruding provision and concavity provision Complementary arrangement (please refer to FIG. 5C), and the light guide part 212 on the lower end surface has a continuous zigzag groove with first and second oblique sides 41, 42, and the first and second oblique sides 41, 42 are aligned with the light guide plate 21. The first and second included angles 411 and 421 of different angles are formed; every three light guide parts 212 can also be formed into a group and arranged at intervals, as shown in FIG. 5D .

Please refer to Fig. 6, which is a further embodiment of the present utility model, wherein more than one corresponding diffusion sheet 25 can be added above the light guide plate 21, and more than two diffusion points set on the diffusion sheet 25 (not shown in the figure), so as to homogenize the high-intensity light source emitted from the light guide plate 21, and then achieve the effect of making the display effect of the display uniform and smooth.

Please refer to Fig. 7A and B, which is a further embodiment of the present utility model, wherein more than one corresponding prism sheet 26 can be added above the light guide plate 21, which is arranged above the light guide plate 21, and the prism sheet 26 There is more than one microprism structure 261 vertically arranged above or below, and the directivity of the outgoing light source is increased by the refraction and light-condensing guide of more than one microprism structure 261; of course, The prism sheet 26 can also be further provided with a protection sheet 27 .

In order to make the utility model show its advancement and practicality more, it is as follows with a comparative analysis of conventional use:

Common deficiencies: 1. Insufficient light source efficiency. 2. It is necessary to add an additional sheet to enhance the light source to enhance the light source. 3. Increase material cost.

The utility model has advantages: 1. The efficiency of the light source is better. 2. There is no need to add additional sheets to enhance the light source to enhance the 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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