CN2679497Y - Face lighting source device able to dual-side give off - Google Patents

Abstract

The utility model relates to a face lighting source device able to dual-side give off which comprises a light conducting plate, an optical membrane with functions of light reflection and light transmission, a diffusion slice, a prismatic lens and a lamp source. The lamp source is disposed at the end edging of the light conducting plate; one side surface of the light conducting plate is provided with the diffusion and the prismatic lens in turn; the other side of the light conducting plate is provided with the optical membrane, the diffusion slice and the prismatic lens in turn. The utility model can make the light transmitted from the lamp source be reflected by the optical membrane and go out towards one side of the light conducting plate to form a first light-out side for a part of the light and penetrate the optical membrane and go out towards the reverse direction of the light-out side to form a second light-out side for the rest part, when the light transmitted from the lamp source passes the optical membrane after passing the light conducting plate.

Description

Planar light source device that can two-sided bright dipping

[technical field]

The utility model is about a kind of planar light source device that can two-sided bright dipping, can provide the commodity that need double-sided display function to use.

[background technology]

As shown in Figure 1, 2, the planar light source device that general display is mated, differentiation has front light-source device 1, reach 2 two kinds of backlight arrangements: summary, the composition of front light-source device 1, be to establish a LGP 12,, can reach the function of demonstration by light source bright dipping after reflected displaying device 11 reflections of lamp source 13 outputs that are arranged at LGP 12 sides by the place ahead of a reflected displaying device 11.And the composition of backlight arrangement 2, be to establish a LGP 22 by the back side of a display 21, establish a reflecting plate 23 again in the bottom surface of LGP 22, and be provided with lamp source 24 to supply with light source in the side of LGP 22, in the application, they be to make the light source of lamp source 24 outputs, and reflecting plate 23 reflection backs are towards display 21 inputs, in order to the usefulness of bright dipping demonstration through LGP 22 refractions.More than two kinds of planar light source devices, use for a long time for the display industry haply, especially the application of backlight arrangement 2 is extensive especially.

No matter and display applied be front light-source device 1, or backlight arrangement 2 its applicable exiting surfaces have only single exiting surface, the relevant dealer who often makes or use display limits to some extent.For instance, in the mobile phone of a new generation, towards transmitting image, in order to transmit image, the mobile phone dealer promptly as shown in Figure 3 on the function; Establish a key frame viewing area 31 in the cover inboard of mobile phone 3, when this key frame viewing area 31 is flat except showing general message, more can demonstrate the portrait or the landscape image that receive, wherein taking in image then is the phtographic lens 32 that utilizes in the mobile phone 3, the image that captures is gone out by the electronic equipment of phone itself, after making the recipient receive, show for watching in key frame display 31; Yet, if the user is generally more easy to operate when the oneself takes, because of mobile phone 3 being gripped with hand, phtographic lens 32 is aimed at towards oneself, whether and to utilize key frame viewing area 31 to see and look be best picture, and comply with the required mobile phone 3 that adjusts slightly again and can take, if but when taking his thing, because of most of phtographic lenses 32 suffer the foreign matter wearing and tearing or hide for avoiding, so phtographic lens 32 is arranged at the phone medial surface, at this moment, then his object space of phtographic lens 32 reversed alignment can must be taken, and in order to obtain best shooting picture, existing dealer is in addition in the back side of key frame viewing area 31, it is the cover lateral surface of mobile phone 3, one form viewing area 33 is set, the person of being convenient to operation is from form viewing area 33, whether sight is looked the image frame of desire shooting and is satisfied with, and the foundation that is further adjusted, in addition, the part dealer is also arranged, application with this form viewing area 33 has added incoming call display function, promptly when incoming call is arranged, can learn the telephone number of first speaker by 33 horse backs from the form viewing area, and needn't raise phone.Based on so, mobile phone 3 promptly must configuration two group display equipments, more for this two group display equipment; Then must two groups of planar light source devices of configuration, thus, not only on foot increase cost, make mobile phone 3 weight strengthen again, volume strengthens, even disappearance such as power supply consumption increasing, so the solution of a problem is very urgent, its improved necessity is arranged.

[utility model content]

The purpose of this utility model is to be to provide a kind of planar light source device that can two-sided bright dipping, and it can reach the usefulness of two-sided bright dipping, uses for the commodity that need double-sided display function.

In order to achieve the above object, the utility model provides a kind of planar light source device that can two-sided bright dipping, comprising: blooming piece and diffusion sheet, prismatic lens and the lamp source of a LGP, tool light reflection and light transmission function is characterized in that:

The lamp source is arranged at this LGP end limit, and a side of this LGP disposes this diffusion sheet and this prismatic lens in regular turn, and the another side of this LGP then disposes this blooming piece, this diffusion sheet and this prismatic lens in regular turn.

In sum, the utility model can two-sided bright dipping planar light source device, it is the blooming piece that tool reflection and transmission dual-use function are set in a side of LGP, the light source that makes illuminator output is through LGP during again through blooming piece, part light source can be after blooming piece reflection towards a side bright dipping of LGP, and form first exiting surface; Another part light source then after the blooming piece transmission, towards the opposite direction bright dipping of first exiting surface, and forms second exiting surface, to reach the usefulness of two-sided bright dipping, can offer the commodity that need double-sided display function and use.

[description of drawings]

Fig. 1 is existing front light-source device schematic diagram.

Fig. 2 is existing backlight arrangement schematic diagram.

Fig. 3 is the mobile phone schematic diagram of existing tool image transmission and Presentation Function.

Fig. 4 the utility model combination schematic diagram.

Fig. 5 the utility model combination action schematic diagram.

Fig. 6 embodiment of the present utility model.

[specific embodiment]

For making further understanding structure of the present utility model, reach the function that can reach, explanation of conjunction with figs. and preferred embodiment now as back:

At first, as shown in Figure 4, be the planar light source device 4 of a kind of two-sided bright dipping of the present utility model, include a LGP 41, and dispose one or several lamp sources 42 in LGP 41 end limits, and, be provided with light diffusing sheet 43 and one or more prismatic lens 44 in a side of LGP 41; Forming first exiting surface 45, the another side of LGP 41, then the blooming piece 46 of reflection of configuration one tool and transmission dual-use function earlier is provided with light diffusing sheet 47 more in regular turn, and one or more prismatic lens 48; To form second exiting surface 49, as shown in Figure 5, after receiving the light source that comes from lamp source 42 when LGP 41, the light source of a part can be through LGP 41 internal reflections, and be subjected to blooming piece 46 to possess the two factor of part light reflection function, the light source of a part is done the diffusion of light towards light diffusing sheet 43, and after prismatic lens 44 gives effective optically focused, and can be at first exiting surface, 45 smooth output light sources, with desire utilize this light source configuration display application it; Again, the light source that comes from lamp source 42 equally, except that aforementioned towards the output of first exiting surface 45, another part light source then through LGP 41 through blooming piece 46 time, then because of blooming piece 46 has the light transmissive function of part, and make the light source of its transmission can be again to do the diffusion of light through light diffusing sheet 47 even, give effective optically focused through prismatic lens 48 again, and carry out output light source in second exiting surface, make another display of desire configuration use.

As shown in Figure 6, if when implementing as use of the present utility model with the mobile phone commodity, wherein the key frame viewing area 31 of mobile phone 3 is because main viewing area, form viewing area 33 then is a secondary display area, so can be according to the actual required collocation of first exiting surface 45 and second exiting surface 49 being done the Different Light output quantity, promptly cooperating the two ratio of the reflectivity of blooming piece 46 and transmissivity to do different the adjustment uses, and in existing the reflectivity of these blooming pieces 46 mostly a little more than transmissivity, so, in other words, because of using the light reflection performance, and can obtain used than first exiting surface 45 of the multiple light courcess picture-display-region 31 of can deciding, and utilize second exiting surface 49 of light transmission usefulness, because of its light source a little less than first exiting surface 45, then selecting for use becomes form viewing area 33, and the two can reach the collocation on the practice, and makes unlikely waste of light source and not enough situation take place.

Claims (1)

1, a kind of planar light source device that can two-sided bright dipping comprises: blooming piece and diffusion sheet, prismatic lens and the lamp source of a LGP, tool light reflection and light transmission function is characterized in that:

The lamp source is arranged at this LGP end limit, and a side of this LGP disposes this diffusion sheet and this prismatic lens in regular turn, and the another side of this LGP then disposes this blooming piece, this diffusion sheet and this prismatic lens in regular turn.

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