CN2700911Y

CN2700911Y - Light guiding board

Info

Publication number: CN2700911Y
Application number: CN 200420004919
Authority: CN
Inventors: 杨覲聪
Original assignee: LIANZHUN INDUSTRY Co Ltd
Current assignee: LIANZHUN INDUSTRY Co Ltd
Priority date: 2004-03-02
Filing date: 2004-03-02
Publication date: 2005-05-18
Anticipated expiration: 2014-03-02

Abstract

The utility model relates to a light conducting panel which is provided with a light-incoming end surface. A luminary is arranged on the light-incoming end surface of the light conducting panel, and at least two mutually spaced scattering regions are arranged on the light-incoming end surface; the scattering regions are hollow cutting parts which are provided with continuous and separate acute angles and arranged on the exterior margin of the light-incoming end surface; continuous and spaced wedges are formed on the light-incoming end surface of two contiguous hollow cutting parts; the position of each scattering region is corresponding to the position of each luminary. The utility model can reduce the clear degree of a dark band region on the light conducting panel, namely an expressed position without enlarging the distance between the luminary and the light conducting panel or increasing the allocated amount of the luminary. By allocating an economic quantity of luminary, the utility model is favorable for commercial articles to have bigger space to change the designs and increase the commercial value of the commercial articles.

Description

Light guide plate

[technical field]

The utility model is about a kind of light guide plate.

[background technology]

As shown in Figure 1, general LCD 1, the light source that is provided is the backlight source module 2 that comes from coupling mostly, and backlight source module 2 light sources come from light guide plate 21 wherein, be subjected to its irradiation back, lamp source folding, the reflection bright dipping, and can be applicable to many commodity, such as mobile phone, computer, even TV or the like, all to reach a large amount of application of industry, and as shown in Figure 1, the bottom surface of LCD 1 is provided with a light guide plate 21, the bottom surface of this light guide plate 21 then is provided with numerous leaded light points 211 of making light reflection usefulness, the exiting surface of light guide plate 21 is provided with the diffusion sheet 23 that prismatic lens 22 that promising number do not wait and diffused light source are used, and the reflecting surface in light guide plate 21 is provided with a reflector plate 24 in addition, and is provided with luminophor 25 with the supply light source in the light inputting end of light guide plate 21, selecting for use then because of the product difference of luminophor 25 generally is that the two is arranged in pairs or groups with light emitting diode (LED) and cold cathode fluorescent lamp (CCF); It in the utilization light source with luminophor 25 outputs, after entering light guide plate 21, utilize the leaded light point 211 of light guide plate 21, and the reflection of reflector plate 24, its light source is penetrated towards exiting surface, even in the diffusion that makes its optically focused that sees through prismatic lens 22 and diffusion sheet 23, its light source is penetrated towards exiting surface, utilize for this LCD 1.

And be that enhancement product quality, relevant dealer there's no one who doesn't or isn't drop into a large amount of painstaking effort researchs, in the hope of improving its performance boundary,, or be the variation design of prismatic lens 22, diffusion sheet 23 such as the formation and the aspect of leaded light point 211 in the light guide plate 21, strengthen light transmittance efficiency, i.e. the briliancy of light and all performance of neat degree; Yet, all commodity that are applied to LCD 1 also constantly change improvement, as size increasing, thickness attenuation or the like, wherein change greatly with mobile phone again, because of mobile phone now towards colored screen development, and be guiding, but the volume specification of mobile phone integral body with bigger screen form, reverse design is more and more small and exquisite again, and making wherein, the interior all component of screen is subjected to rigor test; The backlight source module 2 that general mobile phone is used, mostly with light emitting diode (LED) as the luminophor 25 that required light source is provided, as shown in Figure 2, be that light inlet end face in light guide plate 21 prolongs and puts several luminophors 25, towards light guide plate 21 input light sources, and 25 of in fact per two adjacent luminophors, the light source of output can produce an angle because of the relation of beam angle, and form so-called blanking bar district 212, cause light source usefulness to be subtracted, influence very greatly, the mobile phone of the little screen of old type can utilize because of sizable fuselage space is arranged, so general needing only the visible area in the screen to reach, or luminophor 25 and light guide plate 21 light inlet end face distances are widened, as shown in Figure 3, can overcome these problems.

Yet, strengthening the mobile phone of screen, the shared area ratio of its screen is very big, so it is quite limited to adjust the space of displacement for luminophor 25 or visible area, often causes integral product considerable limitation in designing; Also there is the part dealer directly to solve this problem with the configuration quantity of setting up luminophor 25, but increase the quantity of luminophor 25 simply, not only cost improves, and the failure rate of commodity also increases in the future, and cause energy dissipation or the like problem again, real non-correct improving one's methods.

See also shown in Figure 4, be No. 92200919 novel patents of TaiWan, China, main in this case is that the light inlet end face that is light guide plate 3 nearly luminophors 4 is defined as a fringe area 31, this fringe area 31 is continuously and the at interval hollow-out parts 32 of tool acute angle of tool that sets to the concave of the end limit with light guide plate 3, so that the light guide plate 3 of two adjacent hollow-out parts 32 forms tools continuously and sphenoid 33 at interval, when making the light source of luminophor 4 enter fringe area 31, part light source directly enters light guide plate 3 by the bottom of sphenoid 33, and most light source then enters in the light guide plate 3 via hollow-out parts 32 refraction rears; Can obtain by light source that each hollow-out parts 32 is reflected in the fringe area 31, and make light source produce dispersion effect, enlarge the angle of luminophor 4 light beam of light source, and make, reduce the obvious degree in blanking bar district 34 because of the blanking bar district between the adjacent luminophor 4 34 obtains more light source.

[utility model content]

The purpose of this utility model is to be to provide a kind of light guide plate, can make light source obtain the chance of more refractions, makes the light source homogenising, reduces the obvious degree in blanking bar district, and reduces the blanking bar district in the performance position of light guide plate.

In order to achieve the above object, the utility model provides a kind of light guide plate, and this light guide plate comprises a light inlet end face, and the light inlet end of contiguous this light guide plate is provided with luminophor, it is characterized in that:

This light inlet end face is provided with the fringe area of at least two spaces, this each fringe area is that the outer rim setting in this light inlet end face has continuously and the hollow-out parts of tool acute angle at interval, light inlet end face in this two adjacent hollow-out parts forms continuously and sphenoid at interval, and the position of this each fringe area is the position that corresponds respectively to this each luminophor.

Because of fringe area is established continuously and the at interval hollow-out parts of tool acute angle of tool with the outer rim of light inlet end face, make the light inlet end face of two adjacent hollow-out parts, form continuous and sphenoid at interval, so that the Lights section directly enters light guide plate by the sphenoid bottom, a part then enters light guide plate through the hollow-out parts refraction, can make the instant chance that obtains numerous refractions of light source of self-luminous body.

Described light guide plate is characterized in that: this fringe area is that the outer rim in this light inlet end face outwards is convexly equipped with.

Described light guide plate is characterized in that: this fringe area is that the outer rim in this light inlet end face sets to the concave.

Described light guide plate is characterized in that: the bottom of the sphenoid of this fringe area is tip-shape.

Described light guide plate is characterized in that: the length of this fringe area in this light inlet end face is greater than the length of this luminophor.

The utility model need not amplify the distance between luminophor and the light guide plate, or the configuration quantity of increase luminophor, can reduce that the obvious degree in blanking bar district promptly shows the position in the light guide plate, and be configured to the luminophor of less expensive quantity, the commodity that help using have bigger space and are changed design, can promote the commercial value of commodity.

For the effect that is easier to understand structure of the present utility model and can reach, conjunction with figs. is described as follows now:

[description of drawings]

Fig. 1 is the combination synoptic diagram of known LCD.

Fig. 2 is the synoptic diagram that known light guide plate blanking bar district forms.

Fig. 3 is the known synoptic diagram that overcomes the blanking bar district.

Fig. 4 is the synoptic diagram of another known light guide plate.

Fig. 5 is the synoptic diagram of the utility model light guide plate.

Fig. 6 is the synoptic diagram of the utility model one preferred embodiment.

Fig. 7 is the synoptic diagram of another embodiment of the utility model.

[embodiment]

At first see also Fig. 5, the utility model is to be provided with a fringe area 511 with luminophor 6 opposite positions in the light inlet end face 51 of light guide plate 5, this fringe area 511 has continuously for the outer rim setting with light inlet end face 51 and the hollow-out parts 512 of tool acute angle at interval, make the light inlet end face 51 of two adjacent hollow-out parts 512 form tools continuously and sphenoid 513 at interval, and fringe area 511 finds expression in the length of light inlet end face 51 in the light guide plate 5, with the length that is slightly larger than luminophor 6 is preferable, so that fringe area 511 can be caught the light source of luminophor 6, when the light source that comes from luminophor 6 enters fringe area 511, the part light source will directly pass through the bottom bright dipping of sphenoid 513, part light principle enters light guide plate 5 follow-up bright dippings through hollow-out parts 512 refraction sides, therefore, the light source of luminophor 6 is by behind the fringe area 511 of light inlet end face 51, can obtain the chance of numerous refractions at once, and with the light source homogenising, and can enlarge the angle of former luminophor 6 light beam of light source, at this moment, originally because of between each luminophor 6, the blanking bar district 52 that is formed at light guide plate 5 because of beam angle will obtain more light source, and reduce the obvious degree in blanking bar district 52; Simultaneously, also the angle that enters light guide plate 5 because of the light source of each luminophor 6 becomes big, and makes the angle in the blanking bar district 52 of two adjacent luminophors 6 also become big relatively, and then reduces the position that blanking bar district 52 finds expression in light guide plate 5.See also shown in Figure 6, the quantity of light source of each sphenoid direct bright dipping in 513 bottoms of control on the practice, change collocation with quantity of light source work through hollow-out parts 512 refraction back bright dippings, on so the utility model is implemented, even the bottom lengths that can make each sphenoid 513 contracts to minimum, form one tip-shape, required to accord with different specification, see also Fig. 7 again, the formation of this fringe area 511 can outwards be convexly equipped with in the outer rim of light inlet end face 51 and form.

The utility model can not need because of overcoming the performance of blanking bar district 52 in light guide plate 5, and the distance between amplification luminophor 6 and the light guide plate 5, or the configuration quantity of increase luminophor 6, can reduce that the obvious degree in blanking bar district 52 promptly shows the position in the light guide plate 5, and be configured to less expensive quantity luminophor 6 and for it, the commodity that help using have bigger space and are changed design, to reach the commercial value of promoting commodity.

Claims

1, a kind of light guide plate, this light guide plate have a light inlet end face, and the light inlet end of contiguous this light guide plate is provided with luminophor, it is characterized in that:

This light inlet end face is provided with the fringe area of at least two spaces, this fringe area is that the outer rim setting in this light inlet end face has continuously and the hollow-out parts of tool acute angle at interval, light inlet end face in this two adjacent hollow-out parts forms continuously and sphenoid at interval, and the position of this each fringe area is the position that corresponds respectively to this each luminophor.

2, light guide plate as claimed in claim 1 is characterized in that: this fringe area is that the outer rim in this light inlet end face outwards is convexly equipped with.

3, light guide plate as claimed in claim 1 is characterized in that: this fringe area is that the outer rim in this light inlet end face sets to the concave.

4, as claim 2 or 3 described light guide plate, it is characterized in that: the bottom of the sphenoid of this fringe area is tip-shape.

5, light guide plate as claimed in claim 1 is characterized in that: the length of this fringe area in this light inlet end face is greater than the length of this luminophor.