CN203799044U

CN203799044U - Improved structure of light guide plate

Info

Publication number: CN203799044U
Application number: CN201420186129.1U
Authority: CN
Inventors: 李兰芝
Original assignee: KUMHO ELECTRIC (SHENZHEN) CO Ltd
Current assignee: KUMHO ELECTRIC (SHENZHEN) CO Ltd
Priority date: 2014-04-17
Filing date: 2014-04-17
Publication date: 2014-08-27
Anticipated expiration: 2024-04-17

Abstract

The utility model discloses an improved structure of a light guide plate. The light guide plate is provided with a light incident surface which is used for receiving light emitted by a light source and guiding the incident light to the inside of the light guide plate, a reflection surface which reflects the light penetrating into the light guide plate, and a light emission surface which is used for the light inside the light guide plate to emit therefrom. The improvements are as follows: the light incident surface is provided with a plurality of light guide grooves arranged along the length direction of the light incident surface, and the light guide grooves are of arc structures. According to the improvement structure of the light guide plate, through arranging the arc light guided grooves on the light incident surface, the informality and brightness of the light emitted from the light emission surface on the light guide plate are improved, and the phenomena of light beams, halation and dark areas are prevented.

Description

The structure-improved of light guide plate

Technical field

The utility model relates to light guide plate, relates in particular to a kind of structure-improved of the light guide plate that can improve uniformity coefficient and brightness.

Background technology

Light guide plate is the sci-tech product that line source is changed into area source, and it is optical grade acryl (PMMA)

/ PC is base material, uses the back light model setting technology of LCD display and notebook computer, sees through the high light line conductivity of light guiding points, through computer, light guiding points is calculated, and makes light guide plate light refraction become the equal light state of area source.

Light guide plate generally has incidence surface, exiting surface and reflecting surface, on incidence surface, be generally provided with microstructure, this microstructure is generally V-type groove, the light that light source sends enters light guide plate internal transmission through incidence surface, after reflecting surface transmitting, penetrate from exiting surface, the defect of this V-type groove structure is: light easily produces light beam, halation or even dark space after by incidence surface light splitting, the light that finally causes exiting surface to penetrate is inhomogeneous, cause electronic product screen intensity inhomogeneous, had a strong impact on performance backlight.In addition, the exiting surface of common light guide plate is planar structure, this planar structure, and light losing is more, and amount of light is relatively little, and overall brightness declines.

Utility model content

The purpose of this utility model is to overcome deficiency of the prior art and structure-improved that a kind of light guide plate is provided.

The technical scheme that the utility model solution prior art problem adopts is: a kind of structure-improved of light guide plate, this light guide plate has to receive the light that light source sends the incidence surface that this incident ray is directed into light guide plate inside, the reflecting surface reflecting entering the light of described light guide plate inside, and the exiting surface penetrating for described light guide plate internal light, its improvement is: described incidence surface has a plurality of leaded light grooves that arrangement is provided with along its length, the curved structure of described leaded light groove.

Below technique scheme is further elaborated:

Further, described exiting surface is arranged along its length and is provided with a plurality of strip bulges.

Further, the cross section of described strip bulge is triangular in shape.

Further, the cross section of described strip bulge is curved.

Further, described reflecting surface is distributed with a plurality of lattice point structures.

Further, described light guide plate is plate shaped or wedge.

The beneficial effects of the utility model are: the structure-improved of the light guide plate that the utility model provides, on incidence surface, be provided with curved leaded light groove, the light that light source sends is in the time of incidence surface incident, the leaded light groove of arc makes the light scattering of incident, so, incident ray is injected light guide plate inside more equably, improve the uniformity coefficient that in light guide plate, exiting surface is penetrated light light, be that brightness is more even, there will not be light beam, halation and dark area effect, in addition, as further improvement of the utility model, the structure of strip bulge is set at exiting surface, the lensed effect of this strip bulge tool, exiting surface amount of light is increased, less light losing, improve the brightness of bright dipping.

Brief description of the drawings

Fig. 1 is the perspective view of a kind of embodiment of the utility model;

Fig. 2 is the front view of a kind of embodiment of the utility model;

Fig. 3 is the front view of another embodiment of the utility model;

Fig. 4 is the perspective view that the utility model and FPCB install;

Fig. 5 is the front view that the utility model and FPCB install;

In figure: incidence surface 10; Leaded light groove 101; Reflecting surface 20; Lattice point structure 201; Exiting surface 30; Strip bulge 301; FPCB40; Light source 41.

Realization, functional characteristics and the advantage of the utility model object, in connection with embodiment, are described further with reference to accompanying drawing.

Embodiment

Describe the technical solution of the utility model in detail below with reference to drawings and the specific embodiments, so as clearer, understand invention essence of the present utility model intuitively.

Shown in Fig. 1, embodiment of the present utility model provides a kind of structure-improved of light guide plate, this light guide plate has an incidence surface 10, a reflecting surface 20 and an exiting surface 30, wherein, the light that incidence surface 10 sends for receiving light source 41, and this light is directed into light guide plate inside, reflecting surface 20 is vertical with the plane of incidence, for the light that enters light guide plate inside is reflected, and exiting surface 30 is relative with reflecting surface 20, the light that enters light guide plate inside via reflecting surface 20 reflections after, finally penetrate from exiting surface 30.

This incidence surface 10 has a plurality of leaded light grooves 101 that arrangement is provided with along its length, the curved structure of leaded light groove 101, and the central axis of the leaded light groove 101 of arcuate structure is parallel to each other.

With reference to shown in Fig. 4 to Fig. 5, according to the light guide plate of the utility model embodiment, in use, FPCB40 correspondence is installed on the one end at incidence surface 10 places in light guide plate, and light source 41 correspondences on FPCB40 are positioned at the front of incidence surface 10.Because incidence surface 10 has the leaded light groove 101 of arcuate structure, the light that light source 41 sends is in the time of incidence surface 10 incident, the leaded light groove 101 of arc makes the light scattering of incident, so, incident ray is injected light guide plate inside more equably, improved the uniformity coefficient that in light guide plate, exiting surface 30 is penetrated light light, i.e. brightness is more even, there will not be light beam, halation and dark area effect.

Shown in Fig. 3, in another embodiment of the present utility model, exiting surface 30 is arranged along its length and is provided with a plurality of strip bulges 301, each strip bulge 301 extends along the Width of light guide plate, and the axis of each strip bulge 301 is parallel to each other, the lensed effect of this strip bulge 301 tool, so, the light of light guide plate inside, under the effect of lens, along penetrating perpendicular to exiting surface 30, less light losing, exiting surface 30 amount of lights are increased, improved the brightness of bright dipping.

The shape of strip bulge 301 can be arranged to various shape, as preferably, cross section (as shown in Figure 3) triangular in shape or curved (as shown in Figure 1, 2) of strip bulge 301, the strip bulge 301 of this triangle or arc makes the distribution of light of outgoing more even, bright dipping better effects if.

In addition, reflecting surface 20 is distributed with a plurality of lattice point structures 201, and this lattice point structure 201 can further strengthen emitting brightness and the uniformity coefficient of light guide plate.

In the present embodiment, light guide plate is plate shaped (as shown in Figure 3) or wedge (as shown in Figure 1, 2).

To sum up, the structure-improved of the light guide plate that the utility model provides, by curved leaded light groove 101 is set on incidence surface 10, improve uniformity coefficient and brightness that in light guide plate, exiting surface 30 is penetrated light light, avoided occurring light beam, halation and dark area effect, in addition, by the structure of strip bulge 301 is set at exiting surface 30, the amount of light that increases exiting surface 30 increases, and less light losing, has further improved emitting brightness.

The foregoing is only preferred embodiment of the present utility model; not thereby limit the scope of the claims of the present utility model; every equivalent structure or conversion of equivalent flow process that utilizes the utility model instructions and accompanying drawing content to do; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present utility model.

Claims

1. the structure-improved of a light guide plate, this light guide plate has to receive the light that light source sends the incidence surface that this incident ray is directed into light guide plate inside, the reflecting surface reflecting entering the light of described light guide plate inside, and the exiting surface penetrating for described light guide plate internal light, it is characterized in that: described incidence surface has a plurality of leaded light grooves that arrangement is provided with along its length, the curved structure of described leaded light groove.

2. light guide plate structure-improved according to claim 1, is characterized in that: described exiting surface is arranged along its length and is provided with a plurality of strip bulges.

3. light guide plate structure-improved according to claim 2, is characterized in that: the cross section of described strip bulge is triangular in shape.

4. light guide plate structure-improved according to claim 2, is characterized in that: the cross section of described strip bulge is curved.

5. according to light guide plate structure-improved described in any one in claim 1-4, it is characterized in that: described reflecting surface is distributed with a plurality of lattice point structures.

6. light guide plate structure-improved according to claim 5, is characterized in that: described light guide plate is plate shaped or wedge.