CN201037884Y

CN201037884Y - Modified high efficiency horizontal V-shape groove structure

Info

Publication number: CN201037884Y
Application number: CNU2007201472096U
Authority: CN
Inventors: 蔡荣智
Original assignee: Taiwan Nano Electro Optical Technology Co Ltd
Current assignee: Fuxiang Industrial Co., Ltd.
Priority date: 2007-05-09
Filing date: 2007-05-09
Publication date: 2008-03-19
Anticipated expiration: 2017-05-09

Abstract

The utility model provides a horizontal V-shaped groove high efficiency structure improvement. The lower end surface of a light guide plate is provided with more than two side pyrometric cones. End surfaces of the inversed pyrometric cones allow reflection light transmitting in the light guide plate to upward refract, evenly emit from a surface of the light guide plate, and then be refracted and focally corrected by a prism lens, thus greatly improve brightness of a display.

Description

Horizontal V-shaped groove high-level efficiency structural improvement

Technical field

The utility model provides a kind of horizontal V-shaped groove high-level efficiency structural improvement, especially refer to a kind of upwards refraction of refract light source with the incident light guide plate, and penetrate, and see through a prismatic lens equably from the light guide plate surface its light source is amplified, and then can reach the structure that improves display brightness greatly.

Background technology

Press, general backlight module (seeing also shown in Figure 1), it is mainly by a light source cover 10, one light source 11, one reflecting plate 12, one light guide plate 13, one first diffuser plate 14, one first light collecting plate 15, one second light collecting plate 16, one second diffuser plate 17 constitutes, provide LCD required light source by backlight module, so, often too much because of the sheet material of this backlight module, it is time-consuming to cause group to establish, weight increases, cost increases, problems such as power loss and the big accommodation space of need take place, and, reflecting plate 12 in this backlight module, light guide plate 13, first diffuser plate 14, first light collecting plate 15, second light collecting plate 16, when second diffuser plate, 17 arbitrary sheet materials are bad, all can influence the light source that exports LCD to, the light source briliancy deficiency that causes LCD to be exported, the unequal problem of image fog and color takes place;

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

The utility model content

The purpose of this utility model is to provide a kind of horizontal V-shaped groove high-level efficiency structural improvement, especially refer to a kind of upwards refraction of refract light source with the incident light guide plate, and penetrate, and see through a prismatic lens equably from the light guide plate surface its light source is amplified, and then can reach the structure that improves display brightness greatly.

The technical scheme that the utility model adopted is: horizontal V-shaped groove high-level efficiency structural improvement comprises: a light guide plate; One reflecting plate, it is arranged in this light guide plate below; One light supply apparatus, it is located at this 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 lower surface is provided with the inverted triangle cone-shaped body that is horizontal parallel more than two with light supply apparatus.

The beneficial effects of the utility model are: the end face that utilizes this inverted triangle cone-shaped body, make the upwards refraction of refract light source of its incident light guide plate, and penetrate from the light guide plate surface equably, and see through the refractive power and the optically focused correcting effect of a prismatic lens again, can improve the brightness of display greatly, and have the effect of saving diffusion sheet material and brightening piece cost concurrently.

Description of drawings

Fig. 1 is the synoptic diagram of general backlight module;

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

Fig. 3 is a light source refraction schematic side view of the present utility model;

Fig. 4 is another schematic side view of the present utility model;

Fig. 5 is a schematic side view more of the present utility model;

Fig. 6 is the schematic side view of the utility model light guide plate;

Fig. 7 is the structural representation of the utility model light guide plate.

[figure number explanation]

10.. light source cover 11.. light source

12.. reflecting plate 13.. light guide plate

14.. the first diffuser plate 15.., first light collecting plate

16.. the second light collecting plate 17.., second diffuser plate

21.. light guide plate 211. lower surfaces

212. inverted triangle cone-shaped body 213. end faces

22.. prismatic lens 221. microprism sheets

23.. reflecting plate 24.. light supply apparatus

25.. light source cover 26... screening glass

27... diffusion sheet 3... refract light source

41... the first hypotenuse 42..., second hypotenuse

411... the first angle 421..., second angle

Embodiment

See also shown in Figure 2ly, the utility model provides a kind of horizontal V-shaped groove high-level efficiency structural improvement, comprises:

One light guide plate 21, its these light guide plate 21 lower surfaces 211 are provided with the inverted triangle cone-shaped body 212 more than two, wherein, this inverted triangle cone-shaped body 212 is parallel in a horizontal manner with light supply apparatus 24, and by these inverted triangle cone-shaped body 212 its end faces 213, make the upwards refraction of refract light source 3 of its incident light guide plate 21, and penetrate (seeing also shown in Figure 3) from light guide plate 21 surfaces equably;

One prismatic lens 22, it is located at light guide plate 21 tops, wherein, these prismatic lens 22 1 sides be provided with one or more than be the micro-prism structure 221 of homeotropic alignment, refractive power and optically focused correcting effect by one or more micro-prism structure 221, and strengthen amplification (seeing also shown in Figure 3) with the directivity of increase outgoing light source and with this light source, make it reach the purpose of high briliancy; Certainly, can further be provided with a screening glass 26 on this prismatic lens 22, as shown in Figure 4.

One reflecting plate 23, it is arranged in this light guide plate 21 belows, and the source reflection that these light guide plate 21 bottom surfaces are exposed returns in this light guide plate 21, and to increase the utilization rate of incident light source;

One light supply apparatus 24, it is located at light guide plate 21 1 sides, and this light supply apparatus 24 is in order to send the required light source of LCD;

One light source cover 25, it is located at this light supply apparatus 24 1 sides, and this light source cover 25 partly surrounds this light supply apparatus 24, and goes in this light guide plate 21 with the light refraction that this light supply apparatus 24 is sent;

Please cooperate consult shown in Figure 3, when the light source of light supply apparatus 24 enters light guide plate 21, end face 213 by this inverted triangle cone-shaped body 212, make the upwards refraction of refract light source 3 of its incident light guide plate 21, it evenly penetrates from light guide plate 21 surfaces, and see through the refractive power and the optically focused correcting effect of this prismatic lens 22 again, its light source is strengthened and homogenize, can improve the height of display greatly, and assisting through this reflecting plate 23, and the source reflection that exposes from these light guide plate 21 bottom surfaces can be returned (figure does not show) in the light guide plate 21, and to increase the utilization rate of incident light source, and utility model is not only utilized single light guide plate 21, sheet material collocation groups such as prismatic lens 22 and reflecting plate 23 are established, can make collocation display brightness of the present utility model, the display brightness more than the general backlight module of collocation exceeds more than 25 percent, moreover, can reach by the utility model and to reduce cost, save electric energy, weight reductions etc. meet dealer and consumer demand; Perhaps further be provided with a diffusion sheet 27, as shown in Figure 5, and will give all light, and make briliancy be equal brightness from the light source of this diffusion sheet 27 outgoing from the light source of light guide plate 21 outgoing in light guide plate 21 tops.

In addition, as shown in Figure 6, its inverted triangle cone-shaped body 212 has the continuous sawtooth groove of first and

second hypotenuse

41,42, and its first and

second hypotenuse

41,42 and light guide plate 21 form first and second angle 411,421 of different angles; Can per three inverted triangle cone-shaped bodys 212 be one group also, and have and be spaced, as shown in Figure 7.

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

Commonly use disappearance: 1, group is established time-consuming; 2, expend cost; 3, consume electric power; 4, weight increases; 5, need big accommodation space.

The utility model advantage: 1, the group establish convenient; 2, save cost; 3, save electric power; 4, Volume is frivolous; 5, do not need large space to get final product capacity; 6, briliancy exceeds general backlight module percentage More than 25.

In sum, the utility model has really reached the effect that institute's wish is promoted, and practicality is not especially Mediocrely doubt, should get permission patent, request your auditor and can know clearly and give careful examining, develop simultaneously and day grant a quasi patent For praying.

Claims

1. horizontal V-shaped groove high-level efficiency structural improvement comprises:

One light guide plate;

One reflecting plate, it is arranged in this light guide plate below;

One light supply apparatus, it is located at this 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 lower surface is provided with the inverted triangle cone-shaped body that is horizontal parallel more than two with light supply apparatus.

2. as horizontal V-shaped groove high-level efficiency structural improvement as described in the claim 1, it is characterized in that this inverted triangle cone-shaped body has first and second hypotenuse, its first and second hypotenuse and light guide plate form first and second angle.

3. horizontal V-shaped according to claim 1 groove high-level efficiency structural improvement is characterized in that, per three of this inverted triangle cone-shaped body is one group, and has and be spaced.

4. horizontal V-shaped according to claim 1 groove high-level efficiency structural improvement is characterized in that, this light guide plate top further is provided with a prismatic lens.

5. as horizontal V-shaped groove high-level efficiency structural improvement as described in the claim 4, it is characterized in that, this prismatic lens top convex with one or more than be the micro-prism structure of homeotropic alignment.

6. as horizontal V-shaped groove high-level efficiency structural improvement as described in the claim 4, it is characterized in that this prismatic lens top further is provided with a screening glass.

7. horizontal V-shaped according to claim 1 groove high-level efficiency structural improvement is characterized in that, this light guide plate top further is provided with a diffusion sheet.