CN206638848U

CN206638848U - A kind of light guide plate, direct-light-type backlight and liquid crystal display die set

Info

Publication number: CN206638848U
Application number: CN201621212535.6U
Authority: CN
Inventors: 郭文; 周福新
Original assignee: Truly Semiconductors Ltd
Current assignee: Truly Semiconductors Ltd
Priority date: 2016-11-10
Filing date: 2016-11-10
Publication date: 2017-11-14
Anticipated expiration: 2026-11-10

Abstract

The utility model discloses a kind of light guide plate, direct-light-type backlight and liquid crystal display die set.The light guide plate includes incidence surface and exiting surface relative in a light conducting plate body and the light conducting plate body, and the prismatic micro-structural of some strips or the prismatic micro-structural of some groups of ring-types are evenly arranged with the incidence surface.The light guide plate becomes numerous small inclined-planes by being evenly arranged with prismatic micro-structural on incidence surface, by the plane of script incidence surface, and light produces refraction at inclined-plane, reaches the purpose for scattering light, solves the problems, such as the LED location part bright spot of direct-light-type backlight.

Description

A kind of light guide plate, direct-light-type backlight and liquid crystal display die set

Technical field

It the utility model is related to field of backlights, more particularly to a kind of light guide plate, direct-light-type backlight and liquid crystal display die set.

Background technology

The backlighting requirements brightness of vehicle-mounted HUD products is high, and brightness range is from tens of thousands of to hundreds of thousands, far beyond current TFT Color screen backlight it is thousands of to 10,000 or so scope, conventional side entering-type LED backlight source can not meet vehicle-mounted because lamp bar is small The brightness requirement of HUD products, direct LED backlight can only be used, and in order to lift brightness, it is high-power in being typically employed to LED, these LED luminances are very high, and LED is local easily to form bright spot.

In the prior art, in order to solve the problems, such as the LED location part bright spot of direct-light-type backlight, increasing the thickness of backlight is One method, still, this developing direction lightening with liquid crystal module are runed counter to.

Utility model content

In order to solve above-mentioned the deficiencies in the prior art, the utility model provides a kind of light guide plate, direct-light-type backlight and liquid Brilliant display module.The light guide plate is become the plane of script incidence surface by being evenly arranged with prismatic micro-structural on incidence surface Numerous small inclined-planes, light produce refraction at inclined-plane, reach the purpose for scattering light, solve direct-light-type backlight LED location part bright spot problem.

Technical problem to be solved in the utility model is achieved by the following technical programs：

Relative incidence surface and exiting surface on a kind of light guide plate, including a light conducting plate body and the light conducting plate body, The prismatic micro-structural of some strips is evenly arranged with the incidence surface.

Further, it is parallel to each other between the prismatic micro-structural of some strips.

Further, the prismatic micro-structural of some strips includes first group of prismatic micro-structural and second group of micro- knot of prismatic Structure, it is parallel to each other between first group of prismatic micro-structural, is parallel to each other between second group of prismatic micro-structural, described first Intersected between group prismatic micro-structural and second group of prismatic micro-structural.

Further, intersected between first group of prismatic micro-structural and second group of prismatic micro-structural in 90 °.

Further, the prismatic micro-structural of some strips is projective structure or sunk structure.

Relative incidence surface and exiting surface on a kind of light guide plate, including a light conducting plate body and the light conducting plate body, The prismatic micro-structural of some groups of ring-types is evenly arranged with the incidence surface.

Further, the prismatic micro-structural of one group of ring-type to should direct-light-type backlight a luminescent device, and with this Spread centered on luminescent device to surrounding.

Further, the prismatic micro-structural of some groups of ring-types is projective structure or sunk structure.

A kind of direct-light-type backlight, including above-mentioned light guide plate.

A kind of liquid crystal display die set, including above-mentioned direct-light-type backlight

The utility model has the advantages that：The light guide plate on incidence surface by being evenly arranged with the micro- knot of prismatic Structure, the plane of script incidence surface is become into numerous small inclined-planes, light produces refraction at inclined-plane, reaches light scattering Purpose, solves the problems, such as the LED location part bright spot of direct-light-type backlight.

Brief description of the drawings

Fig. 1 is the schematic diagram of light guide plate provided by the utility model；

Fig. 2 is the schematic diagram of another light guide plate provided by the utility model；

Fig. 3 is the schematic diagram of another light guide plate provided by the utility model；

Fig. 4 is the schematic diagram of another light guide plate provided by the utility model；

Fig. 5 is the schematic diagram of another light guide plate provided by the utility model；

Fig. 6 is the schematic diagram of another light guide plate provided by the utility model；

Fig. 7 is the profile of light guide plate provided by the utility model；

Fig. 8 is another profile of light guide plate provided by the utility model；

Fig. 9 is the another profile of light guide plate provided by the utility model；

Figure 10 is the another profile of light guide plate provided by the utility model；

Figure 11 is the another profile of light guide plate provided by the utility model；

Figure 12 is the another profile of light guide plate provided by the utility model；

Figure 13 is the another profile of light guide plate provided by the utility model；

Figure 14 is the another profile of light guide plate provided by the utility model；

Figure 15 is the structure chart of direct-light-type backlight provided by the utility model.

Embodiment

The utility model is described in detail with reference to the accompanying drawings and examples.

Embodiment one

As Figure 1-5, it is relative on a kind of light guide plate 1, including a light conducting plate body and the light conducting plate body to enter Smooth surface 11 and exiting surface, the prismatic micro-structural 111 of some strips is evenly arranged with the incidence surface 11.

The light guide plate 1 on incidence surface 11 by being evenly arranged with prismatic micro-structural 111, by the plane of script incidence surface 11 Become numerous small inclined-planes, light produces refraction at inclined-plane, reaches the purpose for scattering light, solves direct-light-type backlight LED location part bright spot problem.

It is parallel to each other between the prismatic micro-structural 111 of some strips, and can be with the sides aligned parallel of the light guide plate 1 （Such as Fig. 1）Or in certain angle（Such as Fig. 2 and 3）；Or the prismatic micro-structural 111 of some strips includes first group Prismatic micro-structural 111 and second group of prismatic micro-structural 111, it is parallel to each other between first group of prismatic micro-structural 111, described Be parallel to each other between two groups of prismatic micro-structurals 111, first group of prismatic micro-structural 111 and second group of prismatic micro-structural 111 it Between intersect（Such as Figure 4 and 5）, optimally, between first group of prismatic micro-structural 111 and second group of prismatic micro-structural 111 Intersect in 90 °.

Wherein, every prismatic micro-structural 111 can also disconnect forming some small prismatic micro-structural 111（Such as Fig. 3 and 5）.

As illustrated in figs. 8-12, the prismatic micro-structural 111 of some strips is projective structure（Such as Fig. 8）Or sunk structure （Such as Fig. 9）, can be with continuous arrangement between the prismatic micro-structural 111 of some strips（Such as Fig. 7）Or discontinuous arrangement（Such as figure 8 and 9）；Its projective structure or sunk structure can also further make radian processing（Such as Figure 10,11 and 12）.

As shown in Figs. 13 and 14, the projective structure or sunk structure can also be in dissymmetrical structure.

For convenience of explanation, Fig. 1-5 illustrate only a part of prismatic micro-structural 111 on the light guide plate 1, the blank in figure Region should also be as with prismatic micro-structural 111, and the prismatic micro-structural 111 should equably be covered with whole light guide plate 1 The vision area region of incidence surface 11, otherwise can cause the brightness unevenness problem of light, and the scope of protection of the utility model should not yet Therefore it is restricted.

Embodiment 2

As shown in fig. 6, relative on a kind of light guide plate 1, including a light conducting plate body and the light conducting plate body enter light Face 11 and exiting surface, the prismatic micro-structural 111 of some groups of ring-types is evenly arranged with the incidence surface 11.

The prismatic micro-structural 111 of one group of ring-type to should direct-light-type backlight a luminescent device, and with the photophore Spread centered on part to surrounding.

As illustrated in figs. 8-12, the prismatic micro-structural 111 of some ring-types is projective structure（Such as Fig. 8）Or sunk structure （Such as Fig. 9）, can be with continuous arrangement between the prismatic micro-structural 111 of some ring-types（Such as Fig. 7）Or discontinuous arrangement（Such as figure 8 and 9）；Its projective structure or sunk structure can also further make radian processing（Such as Figure 10,11 and 12）.

For convenience of explanation, Fig. 6 illustrate only a part of prismatic micro-structural 111 on the light guide plate 1, the clear area in figure Domain should also be as with prismatic micro-structural 111, and the prismatic micro-structural 111 should equably be covered with entering for whole light guide plate 1 The vision area region of smooth surface 11, otherwise can cause the brightness unevenness problem of light, and the scope of protection of the utility model also should not be because This and be restricted.

Embodiment 3

As shown in figure 15, a kind of direct-light-type backlight, including glue frame 2, the wiring board that is arranged on the bottom of glue frame 2, Some luminescent devices 3 of the wiring board on the side of glue frame 2 are arranged on, are arranged on the wiring board away from the glue Heat-radiating substrate 4 on frame side, the top of the glue frame 2 are provided with the light guide plate 1 described in embodiment 1 or embodiment 2.

The heat-radiating substrate 4 is the good metal substrate of heat conductivility, preferably aluminium base, the wiring board and radiating base The preferably integrated setting of plate 4, and pasted by viscose glue 52 on the glue frame；The wiring board includes FPC or PCB；Institute It is preferably LED to state luminescent device 3；The surface of the light guide plate 1 is additionally provided with an at least optical film 6, generally comprise diffusion barrier, under Bright enhancement film and upper bright enhancement film, the type of the optical film 6 can according to demand depending on, should not be limited with the present embodiment, the optics Film 6 can both be arranged on the incidence surface of the light guide plate 1, can also be arranged on the exiting surface of the light guide plate 1；The glue frame 2 Top be additionally provided with anti-dazzling screen 9, the anti-dazzling screen 9 is preferably double faced adhesive tape, preferably black backwards to the side of the light guide plate 1 Face, the side towards the light guide plate 1 can be the faces of black flour, fine flour or other colors.

Embodiment 4

A kind of liquid crystal display die set, including the direct-light-type backlight described in embodiment 3.

Embodiment described above only expresses embodiment of the present utility model, and its description is more specific and detailed, but simultaneously Therefore the limitation to the utility model patent scope can not be interpreted as, as long as using equivalent substitution or the form of equivalent transformation institute The technical scheme of acquisition, it all should fall within the scope of protection of the utility model.

Claims

1. relative incidence surface and exiting surface on a kind of light guide plate, including a light conducting plate body and the light conducting plate body, its It is characterised by, the prismatic micro-structural of some strips is evenly arranged with the incidence surface.

2. light guide plate according to claim 1, it is characterised in that mutually flat between the prismatic micro-structural of some strips OK.

3. light guide plate according to claim 1, it is characterised in that the prismatic micro-structural of some strips includes first group Prismatic micro-structural and second group of prismatic micro-structural, it is parallel to each other between first group of prismatic micro-structural, second group of prismatic It is parallel to each other between micro-structural, is intersected between first group of prismatic micro-structural and second group of prismatic micro-structural.

4. light guide plate according to claim 3, it is characterised in that first group of prismatic micro-structural and second group of prismatic are micro- Intersected between structure in 90 °.

5. according to any described light guide plate in claim 1-4, it is characterised in that the prismatic micro-structural of some strips is Projective structure or sunk structure.

6. relative incidence surface and exiting surface on a kind of light guide plate, including a light conducting plate body and the light conducting plate body, its It is characterised by, the prismatic micro-structural of some groups of ring-types is evenly arranged with the incidence surface.

7. light guide plate according to claim 6, it is characterised in that the prismatic micro-structural of one group of ring-type corresponds to direct-type backlight One luminescent device in source, and spread centered on the luminescent device to surrounding.

8. the light guide plate according to claim 6 or 7, it is characterised in that the prismatic micro-structural of some groups of ring-types is convex Go out structure or sunk structure.

9. a kind of direct-light-type backlight, it is characterised in that including any described light guide plate in claim 1-8.

10. a kind of liquid crystal display die set, it is characterised in that including the direct-light-type backlight described in claim 9.