CN105093392A - Light guide plate and liquid crystal display - Google Patents
Light guide plate and liquid crystal display Download PDFInfo
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- CN105093392A CN105093392A CN201510501819.0A CN201510501819A CN105093392A CN 105093392 A CN105093392 A CN 105093392A CN 201510501819 A CN201510501819 A CN 201510501819A CN 105093392 A CN105093392 A CN 105093392A
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- Prior art keywords
- guide plate
- light guide
- triangular prism
- microstructure
- exiting surface
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Classifications
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
- G02B6/0036—2-D arrangement of prisms, protrusions, indentations or roughened surfaces
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
- G02B6/0053—Prismatic sheet or layer; Brightness enhancement element, sheet or layer
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
- G02F1/133607—Direct backlight including a specially adapted diffusing, scattering or light controlling members the light controlling member including light directing or refracting elements, e.g. prisms or lenses
Abstract
The embodiments of the invention provide a light guide plate and a liquid crystal display, and relate to the technical field of liquid crystal display. The liquid crystal display can realize double-side display, and a screen of the liquid crystal display can obtain uniform brightness. The light guide plate comprises a first light-exiting surface and a second light-exiting surface of a v-shaped microstructure, as well as a first lateral surface, a second lateral surface, a third lateral surface and a fourth lateral surface which are respectively adjacent to the second light-exiting surface and the first light-exiting surface, wherein the second light-exiting surface is opposite to the first light-exiting surface; a triangular prism microstructure arranged as a first array and a triangular prism microstructure arranged as a second array are arranged inside the light guide plate, the triangular prism microstructure arranged as the first array is parallel to the first light-exiting surface, the triangular prism microstructure arranged as the second array is parallel to the second light-exiting surface, and each triangular prism microstructure vertically penetrates the second lateral surface and the fourth lateral surface; and a circular microstructure is arranged inside the light guide plate and between the triangular prism microstructure arranged as the first array and the triangular prism microstructure arranged as the second array.
Description
Technical field
The present invention relates to technical field of liquid crystal display, particularly relate to a kind of light guide plate and liquid crystal display.
Background technology
At present, AT STATION, airport, the public place such as conference and exhibition center and dining room adopt that console mode pastes wall, console mode hang in the air from wall and ceiling in any one mode liquid crystal display is installed, watch obtaining train information, Flight Information and the information such as news in real time for people.Because people streams in public places is than comparatively dense, spectators are more, in order to improve the utilization factor of public place, usually adopting console mode to hang two kinds of modes in the air from wall or ceiling and installing liquid crystal display.But liquid crystal display is all generally one side display, is in the screen that liquid crystal display spectators below just can't see liquid crystal display.
Prior art provides a kind of liquid crystal display, this liquid crystal display comprises backlight module, this backlight module comprises the first light guide plate and the second light guide plate, first light guide plate comprises the first exiting surface, second light guide plate comprises the second exiting surface, first exiting surface and the second exiting surface are oppositely arranged, each described light guide plate is provided with site, obtain and penetrate light uniformly, when having made light by light guide plate, can be reflected by the site on two faces, make two faces all energy bright dippings of a backlight module, make the screen of liquid crystal display to show image.But light guide plate itself does not have brightness enhancement function, if need to obtain higher brightness, need additionally to increase brightness enhancement film; Further, this backlight module also needs two pieces of light guide plate, could realize two-sided bright dipping, and not only cost is higher but also liquid crystal display is thicker.
Prior art also provides another kind of liquid crystal display, this liquid crystal display comprises backlight module, this backlight module comprises light guide plate, uniform injection astigmatism particle in this light guide plate, obtain and penetrate light uniformly, when having made light by light guide plate, can be reflected by the astigmatism particle of this light guide plate, make two faces all energy bright dippings of this light guide plate, make the screen of liquid crystal display to show image.But inherently strong near the intensity of the local light of light source, the light of reflection is just many, goes out light intensity high; Local light away from light source is inherently more weak, the light of reflection is just few, and light intensity is low, and the uniform astigmatism particle of this light guide plate causes the part position light intensity near light source high, position light intensity away from light source is weak, so the screen of liquid crystal display can not obtain uniform brightness.
Therefore, LCD double face how can be made to show, and the screen of liquid crystal display can obtain uniform brightness is a problem demanding prompt solution.
Summary of the invention
The embodiment of the present invention provides a kind of light guide plate and liquid crystal display, LCD double face can be made to show, and the screen of liquid crystal display can obtain uniform brightness.
For achieving the above object, the technical scheme that the embodiment of the present invention adopts is:
First aspect, provides a kind of light guide plate, comprising:
First exiting surface of v shape microstructure and the second exiting surface of v shape microstructure, described second exiting surface and described first exiting surface are oppositely arranged;
First side, the second side, the 3rd side and the 4th side, described first side, described second side, described 3rd side and described 4th side adjoin with described second exiting surface and described first exiting surface respectively, described first side and described 3rd side are oppositely arranged, and described second side and described 4th side are oppositely arranged;
Inner in described light guide plate, with the triangular prism micro-structure of the first array arrangement, with the triangular prism micro-structure of the second array arrangement, described parallel with described first exiting surface with the triangular prism micro-structure of the first array arrangement, described parallel with described second exiting surface with the triangular prism micro-structure of the second array arrangement, each described triangular prism micro-structure vertically runs through described second side and described 4th side, and each described triangular prism micro-structure is hollow;
Described light guide plate inside is provided with circular microstructure, and described circular microstructure is arranged at described with the triangular prism micro-structure of the first array arrangement and described with between the triangular prism micro-structure of the second array arrangement.
In conjunction with first aspect, can in implementation at the first, according to the light source of described light guide plate, circular microstructure varies in size, and density arrangement is different.
Can implementation in conjunction with first aspect or the first, can in implementation at the second, described light guide plate is an overall plate body, reject described light guide plate inside according to described triangular prism micro-structure and form described triangular prism micro-structure, reject described light guide plate inside according to described circular microstructure and form described circular microstructure.
Can implementation in conjunction with first aspect or the first, can in implementation at the third, described light guide plate comprises at least two-layer plate body,
Wherein, a plate body is provided with described v shape microstructure and described triangular prism micro-structure, and another plate body is provided with described v shape microstructure and described triangular prism micro-structure, and a described plate body or another plate body described are also provided with described circular microstructure;
Or two plate bodys are provided with described v shape microstructure, and two plate bodys are provided with described triangular prism micro-structure, and another plate body is provided with described circular microstructure.
Second aspect, provides a kind of backlight, comprising:
First aspect, first aspect the first can implementation to the third of first aspect can light guide plate in implementation described in any one, at least one side of described light guide plate is provided with light source, described first exiting surface is provided with the first diffusion sheet, described second exiting surface is provided with the second diffusion sheet.
In conjunction with second aspect, can in implementation at the first,
When described first side is provided with light source, described second side, described 3rd side and described 4th side are respectively arranged with reflector plate, and described circular microstructure, is arranged according to from sparse to intensive from small to large from described first side to described 3rd side;
Or, when described first side and described 3rd side are provided with light source, described second side and described 4th side are respectively arranged with reflector plate, described circular microstructure from described first side and described 3rd side to relative described first side and described 3rd side in the middle of according to from sparse to intensive, arrange from small to large;
Or, when described first side, described second side and described 3rd side are provided with light source, described 4th side is provided with reflector plate, described circular microstructure from described first side and described 3rd side to relative described first side and described 3rd side in the middle of according to from sparse to intensive, arrange from small to large, described circular microstructure, is arranged according to from sparse to intensive from small to large from described second side to described 4th side;
Or, when described first side, described second side, described 3rd side and described 4th side are provided with light source, described circular microstructure from described first side and described 3rd side to relative described first side and described 3rd side in the middle of according to from sparse to intensive, arrange from small to large, described circular microstructure from described second side and described 4th side to relative described second side and described 4th side in the middle of according to from sparse to intensive, arrange from small to large.
Can implementation in conjunction with the first, can in implementation at the second, described light source is the light source of plural number row and several column.
The third aspect, provides a kind of liquid crystal display, and the first comprising second aspect or second aspect can backlight described in implementation.
In conjunction with the third aspect, in implementation, described first diffusion sheet can be provided with the first display panel, described second diffusion sheet is provided with the second display panel at the first.
Can implementation in conjunction with the first, in implementation, can also comprise the first shell and second housing at the second.
The light guide plate that the embodiment of the present invention provides and liquid crystal display, first exiting surface and the second exiting surface of light guide plate arrange v shape microstructure respectively, this light guide plate also comprises the first side, second side, 3rd side and the 4th side, described first side, described second side, described 3rd side and described 4th side adjoin with described second exiting surface and described first exiting surface respectively, described first side and described 3rd side are oppositely arranged, described second side and described 4th side are oppositely arranged, simultaneously, inner in described light guide plate, be provided with the triangular prism micro-structure of the first array arrangement, with the triangular prism micro-structure of the second array arrangement, described parallel with described first exiting surface with the triangular prism micro-structure of the first array arrangement, described parallel with described second exiting surface with the triangular prism micro-structure of the second array arrangement, each described triangular prism micro-structure vertically runs through described second side and described 4th side, i.e. described triangular prism micro-structure and described v shape microstructure Relative vertical, discontinuous between each described triangular prism micro-structure, each described triangular prism micro-structure is hollow, further, described light guide plate inside is provided with circular microstructure, described circular microstructure is arranged at described with the triangular prism micro-structure of the first array arrangement and described with between the triangular prism micro-structure of the second array arrangement, thus make the light being irradiated into this light guide plate can reflect more light by circular microstructure, again by v shape microstructure and the refraction of triangular prism micro-structure make that light can be vertical from the first exiting surface and the injection of the second exiting surface, thus LCD double face can be made to show, and the screen of liquid crystal display can obtain uniform brightness.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 provides a kind of light conducting plate structure schematic diagram for the embodiment of the present invention;
Fig. 2 provides a kind of light guide plate front view for the embodiment of the present invention;
Fig. 3 provides a kind of light guide plate front elevation for the embodiment of the present invention;
Fig. 4 provides a kind of light guide plate left view for the embodiment of the present invention;
Fig. 5 provides a kind of light guide plate vertical view for the embodiment of the present invention;
Fig. 6 provides a kind of light guide plate left cut-open view for the embodiment of the present invention;
Fig. 7 provides a kind of light guide plate positive view for the embodiment of the present invention;
Fig. 8 provides another kind of light conducting plate structure schematic diagram for the embodiment of the present invention;
Fig. 9 provides another light conducting plate structure schematic diagram for the embodiment of the present invention;
Figure 10 provides a kind of v shape microstructure schematic diagram for the embodiment of the present invention;
Figure 11 provides another kind of v shape microstructure schematic diagram for the embodiment of the present invention;
Figure 12 provides another v shape microstructure schematic diagram for the embodiment of the present invention;
Figure 13 provides another v shape microstructure schematic diagram for the embodiment of the present invention;
Figure 14 provides a kind of triangular prism micro-structure schematic diagram for the embodiment of the present invention;
Figure 15 provides another kind of triangular prism micro-structure schematic diagram for the embodiment of the present invention;
Figure 16 provides another triangular prism micro-structure schematic diagram for the embodiment of the present invention;
Figure 17 provides another triangular prism micro-structure schematic diagram for the embodiment of the present invention;
Figure 18 provides a kind of back light source structure schematic diagram for the embodiment of the present invention;
Figure 19 provides a kind of back light source structure schematic diagram for the embodiment of the present invention;
Figure 20 provides another kind of back light source structure schematic diagram for the embodiment of the present invention;
Figure 21 provides another back light source structure schematic diagram for the embodiment of the present invention;
Figure 22 provides another back light source structure schematic diagram for the embodiment of the present invention;
Figure 23 provides another back light source structure schematic diagram another for the embodiment of the present invention;
Figure 24 provides and another back light source structure schematic diagram for the embodiment of the present invention;
Figure 25 provides another kind of back light source structure schematic diagram for the embodiment of the present invention again;
Figure 26 provides a kind of circular microstructure schematic diagram for the embodiment of the present invention;
Figure 27 provides another kind of circular microstructure schematic diagram for the embodiment of the present invention;
Figure 28 provides another circular microstructure schematic diagram for the embodiment of the present invention;
Figure 29 provides another circular microstructure schematic diagram for the embodiment of the present invention;
Figure 30 provides a kind of light guide plate principle of luminosity figure for the embodiment of the present invention;
Figure 31 provides a kind of liquid crystal display device structure schematic diagram for the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Embodiment 1
The embodiment of the present invention provides a kind of light guide plate 10, as shown in Figure 1, comprising:
First exiting surface 101 of v shape microstructure and the second exiting surface 102 of v shape microstructure, described second exiting surface 102 is oppositely arranged with described first exiting surface 101;
First side 103 (not shown), the second side 104 (not shown), the 3rd side 105 and the 4th side 106, described first side 103, described second side 104, described 3rd side 105 and described 4th side 106 adjoin with described second exiting surface 102 and described first exiting surface 101 respectively, described first side 103 is oppositely arranged with described 3rd side 105, and described second side 104 is oppositely arranged with described 4th side 106;
Inner in described light guide plate, with the triangular prism micro-structure 107 of the first array arrangement, with the triangular prism micro-structure 107 of the second array arrangement, described parallel with described first exiting surface 101 with the triangular prism micro-structure 107 of the first array arrangement, described parallel with described second exiting surface 102 with the triangular prism micro-structure 107 of the second array arrangement, each described triangular prism micro-structure vertically runs through described second side 104 and described 4th side 106, discontinuous between each described triangular prism micro-structure 107, each described triangular prism micro-structure 107 is hollow;
Described light guide plate inside is provided with circular microstructure 108, and described circular microstructure is arranged at described with the triangular prism micro-structure 107 of the first array arrangement and described with between the triangular prism micro-structure 107 of the first array arrangement.
Relative to prior art, the site that two light guide plate are arranged or astigmatism particle is set in a light guide plate, the present invention by arranging v shape microstructure, triangular prism micro-structure and circular microstructure in light guide plate, thus make the light being irradiated into this light guide plate can reflect more light by circular microstructure, again by v shape microstructure and the refraction of triangular prism micro-structure make that light can be vertical from the first exiting surface and the injection of the second exiting surface, thus LCD double face can be made to show, and the screen of liquid crystal display can obtain uniform brightness.Meanwhile, light guide plate of the present invention can adopt 3D to print or laser engraves technique realization, reduces manufacturing cost.
The circular microstructure of light guide plate is inner structure, and shown in Fig. 1 is one jiao that excises light guide plate, shows the schematic diagram of the v shape microstructure of light guide plate, triangular prism micro-structure and circular microstructure.
As shown in Figure 2, light guide plate front view.Run through described second side and described 4th side in described light guide plate internal vertical and be provided with triangular prism micro-structure, be i.e. triangular prism micro-structure and v shape microstructure Relative vertical.
As shown in Figure 3, light guide plate front elevation.Front elevation refers to from the front of object observes the view obtained.What show in Fig. 3 is the first exiting surface 101 of this light guide plate.
As shown in Figure 4, light guide plate left view.Left view refers to the view obtained from the left side of front view toward right side.In Fig. 4, left side display is the second exiting surface 102 of v shape microstructure, the right display be the first exiting surface 101 of v shape microstructure.
As shown in Figure 5, light guide plate vertical view.Vertical view refers to the view doing orthogonal projection downwards and obtain above object.In Fig. 5, top display is one side of the second exiting surface 102, following display be one side of the first exiting surface 101, middle display be inner with the triangular prism micro-structure 107 of the first array arrangement with the triangular prism micro-structure 107 of the second array arrangement in described light guide plate.
As shown in Figure 6, the left cut-open view of light guide plate.Left cut-open view refers to from the left side of front view toward right side, cuts the view that object obtains from top downwards open.In Fig. 6, left side display is the second exiting surface 102 of v shape microstructure, the right display be the first exiting surface 101 of v shape microstructure.Two parallel lines of middle display are the projection lines of triangular prism micro-structure 107.The rectangle of middle display is the projection line of circular microstructure 108.Mesh lines is used for the profile line after representing nonmetallic materials cutting in the left cut-open view of light guide plate shown in Fig. 6.Such as, after the e-e cutting shown in Fig. 3, the left cut-open view of light guide plate shown in Fig. 6 is obtained.
As shown in Figure 7, light guide plate positive view.Positive view refers to from the front of front view and observes, and then cuts the view that object obtains downwards open from top.What show in Fig. 7 is the projection line of the circular microstructure 108 of light guide plate inside.Mesh lines is used for the profile line after representing nonmetallic materials cutting in the positive view of light guide plate shown in Fig. 7.Such as, after the f-f cutting shown in Fig. 5, the light guide plate positive view shown in Fig. 7 is obtained.
It should be noted that, described light guide plate is an overall plate body, rejects described light guide plate inside form described triangular prism micro-structure according to described triangular prism micro-structure, rejects described light guide plate inside form described circular microstructure according to described circular microstructure.
Optionally, can also by least two-layer plate body formation described light guide plate as depicted in figs. 1 and 2.
Concrete, as shown in Figure 8, described light guide plate comprises two-layer plate body, and a plate body A is provided with described v shape microstructure and described triangular prism micro-structure, another plate body B is provided with described v shape microstructure and described triangular prism micro-structure, and described another plate body B is also provided with described circular microstructure.
As shown in Figure 9, described light guide plate comprises plate body a, and first exiting surface 101 of this plate body a is provided with v shape microstructure, and the another side 109 of relatively described first exiting surface 101 of this plate body a is provided with another v shape microstructure with described v shape microstructure Relative vertical; Plate body b; Plate body c is provided with circular microstructure; Second exiting surface 102 of plate body d, this plate body d is provided with v shape microstructure, and the another side 110 of relatively described second exiting surface 102 of this plate body d is provided with another v shape microstructure with described v shape microstructure Relative vertical.Plate body a, plate body b, plate body c form light guide plate 10 together with plate body d.
Fig. 8 and Fig. 9 schematically illustrates a kind of implementation of light guide plate, and the present invention does not do concrete restriction to this, and other arbitrary plate bodys can also be adopted to realize light guide plate of the present invention.
It should be noted that, v shape microstructure of the present invention can be the v shape microstructure of continuous print equilateral " v " shape as shown in Figure 10.Or, the v shape microstructure of continuous print inequilateral " v " shape as shown in figure 11.Or continuous print drift angle is as shown in figure 12 the v shape microstructure of equilateral " v " shape of fillet.Or continuous print drift angle is the v shape microstructure of inequilateral " v " shape of fillet as shown in fig. 13 that.
Triangular prism micro-structure of the present invention can be equilateral triangular prism micro-structure as shown in figure 14.Inequilateral triangular prism micro-structure as shown in figure 15.Right-angle prismatic post microstructure as shown in figure 16.Drift angle is as shown in figure 17 the triangular prism micro-structure of fillet.
Circular microstructure of the present invention can also replace with the cylinder of any enclosed curve formation served the same role.Such as, the cylinder formed by circle, ellipse, quadrilateral, hexagon, star, arbitrary polygon and irregular closed curve shape, all belongs to the scope of patent protection of the present invention.In addition, other waits any stereoeffect as spheroid, spheroid, also all belongs to the scope of patent protection of the present invention.
Embodiment 2
The embodiment of the present invention provides a kind of backlight 20, as shown in figure 18, comprise light guide plate 10, at least one side of described light guide plate is provided with light source 201, described first exiting surface 101 is provided with the first diffusion sheet 202, described second exiting surface 102 is provided with the second diffusion sheet 203.
First diffusion sheet 202 and the second diffusion sheet 203 also for by equalizing light rays, the backlight of brightness uniformity is provided to the first display panel 201 and the second display panel 202.
Further, light guide plate also comprises reflector plate 204, described reflector plate is used for the light back not arranging the side injection of light source from light guide plate to return light guide plate, recycling light, till light penetrates from two exiting surfaces of the light guide plate being parallel to the first diffusion sheet 202 and the second diffusion sheet 203, then vertical irradiation is in the first diffusion sheet 202 and two diffusion sheets 203.
As shown in figure 19, when described first side is provided with light source 201, described second side, described 3rd side and described 4th side are respectively arranged with reflector plate 204.
As shown in figure 20, when described first side and described 3rd side are provided with light source 201, described second side and described 4th side are respectively arranged with reflector plate 204.
As shown in figure 21, when described second side is provided with light source 201, described first side, described 3rd side and described 4th side are respectively arranged with reflector plate 204.
As shown in figure 22, when described second side and described 4th side are provided with light source 201, described first side and described 3rd side are respectively arranged with reflector plate 204.
As shown in figure 23, when described first side, described second side and described 4th side are provided with light source 201, described 3rd side is provided with reflector plate 204.
As shown in figure 24, when described first side, described second side and described 3rd side are provided with light source 201, described 4th side is provided with reflector plate 204.
As shown in figure 25, when described first side, described second side, described 3rd side and described 4th side are provided with light source 201.
Especially, described light source is the light source of plural number row and several column.This light source can be light emitting diode (English full name: LightEmittingDiode, English abbreviation: LED) light source.
It should be noted that, according to the light source of described light guide plate, circular microstructure varies in size, and density arrangement is different.
As shown in figure 26, when described first side is provided with light source 201, described second side, described 3rd side and described 4th side are respectively arranged with reflector plate 204.Described circular microstructure, is arranged according to from sparse to intensive from small to large from described first side to described 3rd side.
As shown in figure 27, when described first side and described 3rd side are provided with light source 201, described second side and described 4th side are respectively arranged with reflector plate 204.Described circular microstructure from described first side and described 3rd side to relative described first side and described 3rd side in the middle of according to from sparse to intensive, arrange from small to large.
As shown in figure 28, when described first side, described second side and described 3rd side are provided with light source 201, described 4th side is provided with reflector plate 204.Described circular microstructure from described first side and described 3rd side to relative described first side and described 3rd side in the middle of according to from sparse to intensive, arrange from small to large, described circular microstructure, is arranged according to from sparse to intensive from small to large from described second side to described 4th side.
As shown in figure 29, when described first side, described second side, described 3rd side and described 4th side are provided with light source 201.Described circular microstructure from described first side and described 3rd side to relative described first side and described 3rd side in the middle of according to from sparse to intensive, arrange from small to large, described circular microstructure from described second side and described 4th side to relative described second side and described 4th side in the middle of according to from sparse to intensive, arrange from small to large.
As shown in figure 30, light guide plate principle of luminosity figure.The reflection of light through circular microstructure of this light guide plate is entered from the incidence surface of light guide plate, then through from first exiting surface and second exiting surface penetrate vertical with the refraction of triangular prism micro-structure of v shape microstructure.
Because the light intensity near light source is comparatively strong, the light intensity away from light source is more weak.So the circular microstructure of light guide plate 10 inside is lower near light source place microstructure dot density, and site is less; And higher away from light source place microstructure dot density, and site is larger.So, the part of comparatively strong for intensity of light source part is reflected less light; And the more weak part of the intensity of light source reflects more light, again by v shape microstructure and the refraction of triangular prism micro-structure make that light can be vertical from the first exiting surface and the injection of the second exiting surface, thus LCD double face can be made to show, and the screen of liquid crystal display can obtain uniform brightness.
Embodiment 3
The embodiment of the present invention provides a kind of liquid crystal display 30, as shown in figure 31, comprises backlight 20, first display panel 301 and the second display panel 302.
Further, described liquid crystal display 30 also comprises the first shell 303 and second housing 304.
It should be noted that, the first display panel 301 is arranged on described first diffusion sheet 202, and the second display panel 302 is arranged on described second diffusion sheet 203.
Relative to prior art, the site that two light guide plate are arranged or astigmatism particle is set in a light guide plate, the present invention by arranging v shape microstructure, triangular prism micro-structure and circular microstructure in light guide plate, thus make the light being irradiated into this light guide plate can reflect more light by circular microstructure, again by v shape microstructure and the refraction of triangular prism micro-structure make that light can be vertical from the first exiting surface and the injection of the second exiting surface, thus LCD double face can be made to show, and the screen of liquid crystal display can obtain uniform brightness.
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; change can be expected easily or replace, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of described claim.
Claims (10)
1. a light guide plate, is characterized in that, comprising:
First exiting surface of v shape microstructure and the second exiting surface of v shape microstructure, described second exiting surface and described first exiting surface are oppositely arranged;
First side, the second side, the 3rd side and the 4th side, described first side, described second side, described 3rd side and described 4th side adjoin with described second exiting surface and described first exiting surface respectively, described first side and described 3rd side are oppositely arranged, and described second side and described 4th side are oppositely arranged;
Inner in described light guide plate, with the triangular prism micro-structure of the first array arrangement, with the triangular prism micro-structure of the second array arrangement, described parallel with described first exiting surface with the triangular prism micro-structure of the first array arrangement, described parallel with described second exiting surface with the triangular prism micro-structure of the second array arrangement, each described triangular prism micro-structure vertically runs through described second side and described 4th side, and each described triangular prism micro-structure is hollow;
Described light guide plate inside is provided with circular microstructure, and described circular microstructure is arranged at described with the triangular prism micro-structure of the first array arrangement and described with between the triangular prism micro-structure of the second array arrangement.
2. light guide plate according to claim 1, is characterized in that, according to the light source of described light guide plate, circular microstructure varies in size, and density arrangement is different.
3. light guide plate according to claim 1 and 2, it is characterized in that, described light guide plate is an overall plate body, reject described light guide plate inside according to described triangular prism micro-structure and form described triangular prism micro-structure, reject described light guide plate inside according to described circular microstructure and form described circular microstructure.
4. light guide plate according to claim 1 and 2, is characterized in that, described light guide plate comprises at least two-layer plate body,
Wherein, a plate body is provided with described v shape microstructure and described triangular prism micro-structure, and another plate body is provided with described v shape microstructure and described triangular prism micro-structure, and a described plate body or another plate body described are also provided with described circular microstructure;
Or two plate bodys are provided with described v shape microstructure, and two plate bodys are provided with described triangular prism micro-structure, and another plate body is provided with described circular microstructure.
5. a backlight, is characterized in that, comprising:
Light guide plate described in claim 1-4 any one claim, is provided with light source at least one side of described light guide plate, and described first exiting surface is provided with the first diffusion sheet, and described second exiting surface is provided with the second diffusion sheet.
6. backlight according to claim 5, is characterized in that,
When described first side is provided with light source, described second side, described 3rd side and described 4th side are respectively arranged with reflector plate, and described circular microstructure, is arranged according to from sparse to intensive from small to large from described first side to described 3rd side;
Or, when described first side and described 3rd side are provided with light source, described second side and described 4th side are respectively arranged with reflector plate, described circular microstructure from described first side and described 3rd side to relative described first side and described 3rd side in the middle of according to from sparse to intensive, arrange from small to large;
Or, when described first side, described second side and described 3rd side are provided with light source, described 4th side is provided with reflector plate, described circular microstructure from described first side and described 3rd side to relative described first side and described 3rd side in the middle of according to from sparse to intensive, arrange from small to large, described circular microstructure, is arranged according to from sparse to intensive from small to large from described second side to described 4th side;
Or, when described first side, described second side, described 3rd side and described 4th side are provided with light source, described circular microstructure from described first side and described 3rd side to relative described first side and described 3rd side in the middle of according to from sparse to intensive, arrange from small to large, described circular microstructure from described second side and described 4th side to relative described second side and described 4th side in the middle of according to from sparse to intensive, arrange from small to large.
7. backlight according to claim 6, is characterized in that, described light source is the light source of plural number row and several column.
8. a liquid crystal display, is characterized in that, comprises the backlight described in claim 5-6 any one claim.
9. liquid crystal display according to claim 8, is characterized in that, described first diffusion sheet is provided with the first display panel, and described second diffusion sheet is provided with the second display panel.
10. liquid crystal display according to claim 9, is characterized in that, also comprises the first shell and second housing.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510501819.0A CN105093392B (en) | 2015-08-14 | 2015-08-14 | A kind of light guide plate and liquid crystal display |
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| CN201510501819.0A CN105093392B (en) | 2015-08-14 | 2015-08-14 | A kind of light guide plate and liquid crystal display |
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| CN105093392B CN105093392B (en) | 2018-08-21 |
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| WO2017152454A1 (en) * | 2016-03-11 | 2017-09-14 | 深圳市华星光电技术有限公司 | Light guide plate, backlight module, and double-surface display device |
| CN111929976A (en) * | 2020-10-15 | 2020-11-13 | 成都菲斯特科技有限公司 | Projection screen and projection system |
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| CN102095141A (en) * | 2011-02-22 | 2011-06-15 | 青岛海信电器股份有限公司 | Backlight module and display equipment |
| CN104076431A (en) * | 2013-03-26 | 2014-10-01 | 鸿富锦精密工业（深圳）有限公司 | Composite light guide plate, composite light guide plate manufacturing method and manufacturing device thereof |
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|---|---|
| CN105093392B (en) | 2018-08-21 |
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Address after: 266100 Zhuzhou Road, Laoshan District, Shandong, No. 151, No. Patentee after: Hisense Video Technology Co., Ltd Address before: 266100 Zhuzhou Road, Laoshan District, Shandong, No. 151, No. Patentee before: HISENSE ELECTRIC Co.,Ltd. |