CN103076649A - Light guide plate and backlight source - Google Patents
Light guide plate and backlight source Download PDFInfo
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- CN103076649A CN103076649A CN2011103281200A CN201110328120A CN103076649A CN 103076649 A CN103076649 A CN 103076649A CN 2011103281200 A CN2011103281200 A CN 2011103281200A CN 201110328120 A CN201110328120 A CN 201110328120A CN 103076649 A CN103076649 A CN 103076649A
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- light guide
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Abstract
The invention discloses a light guide plate and a backlight source in the technical field of display. The light guide plate comprises a groove and through holes, wherein the groove is arranged on the upper surface of the light guide plate and is used for placing an optical diaphragm; the through holes are arranged at the edge of the light guide plate and are used for placing a light source. The backlight source comprises the light guide plate, the optical diaphragm, the light source and a bottom frame, wherein the lower surface of the light guide plate is arranged on the bottom frame; the bottom frame comprises a reflecting layer and a metal layer; and the reflecting layer and the light guide plate are adjacent.
Description
Technical field
The present invention relates to the display technique field, particularly a kind of light guide plate and backlight.
Background technology
Along with the development of liquid crystal display, liquid crystal display with thin thickness, volume is little and the advantage such as little that takes up room, liked by the consumer, and be widely used in various fields.Wherein, in order further to save the space, liquid crystal display to narrow frame require growing.Liquid crystal display mainly comprises: backlight and the display panels that is positioned on the backlight.One of border width determinative of liquid crystal display is the distance between LCD panel edges and the backlight edge, the i.e. border width of backlight.
Fig. 1 is the stereo decomposing structural representation of a kind of side-light type back light of prior art, backlight from top to bottom mainly comprises successively in the prior art: anti-dazzling screen 10, blooming piece 20, light guide plate (light guide plate, LGP) 30, light source 70, glue frame 40, reflector plate (reflector) 60 and chase 50, wherein:
Anti-dazzling screen 10, this anti-dazzling screen 10 is a rectangular hollow blooming piece, and it is mainly used in preventing the light leakage, and described anti-dazzling screen 10 is generally the shading rubber belt of black, and it can also be used for blooming piece 20, light guide plate 30 etc. is fixed on glue frame 40;
Blooming piece 20 comprises diffusion sheet and brightening piece etc., is used for the diffusion of light and blast etc.;
Light guide plate 30 is positioned at the lower surface of described blooming piece 20, is used for changing line source into area source;
Light source 70 comprises a plurality of LED (light-emitting diode, light emitting diode), and a plurality of LED is integrated into a lamp bar, and this lamp bar sticks in the groove of glue frame 40 by adhesive tape 80;
Reflector plate 60 is arranged between glue frame 40 and the chase 50, and the light that is used for not being scattered reflexes to light guide plate 30;
Chase 50 is complementary with glue frame 40, is used for placing and protection glue frame 40;
Described glue frame 40 comprises a plurality of grabs 41, and described chase 50 comprises a plurality of draw-in grooves 51, by grab 41 and corresponding being connected of draw-in groove 51 realizing the assembling of glue frame 40 and chase 50.
Fig. 2 is the vertical view of liquid crystal display, wherein: display panels 900 is placed in the glue frame 40, glue frame 40 is placed in the chase 50, certainly exist gap 90 in glue frame 40 and the chase 50, then the border width of the backlight of this liquid crystal display equals the bee-line between the edge of the edge of display panels 900 and chase 50.Particularly, when the wall thickness of glue frame 40 is d1, the wall thickness of chase 50 is d3, when the width in the gap 90 between glue frame 40 and the chase 50 is d2, and the border width d=d1+d2+d3 of backlight then.Wherein, because the restriction of condition of molding, the wall thickness of glue frame 40 is generally more than or equal to 0.45 millimeter in the prior art, the width in the gap 90 between glue frame 40 and the chase 50 generally is positioned at 0.05 millimeter to 0.1 millimeter scope, the wall thickness of chase 50 can be positioned at 0.1 millimeter to 0.3 millimeter scope, thus in the prior art border width of liquid crystal display at least more than or equal to 0.6 millimeter.
Blooming piece 20 and light source 70 are all fixed carrying by glue frame 40 in the above-mentioned technology, and the seal ring thickness of glue frame 40 becomes a critical limitation factor of the narrow frame of backlight.
Therefore, narrow frame how to realize backlight changes into the problem demanding prompt solution into those skilled in the art.
Summary of the invention
The problem that the present invention solves provides a kind of light guide plate and backlight, so that light guide plate realizes the fixedly function of bearing optical diaphragm and light source, finally realizes the narrow frame of backlight.
For addressing the above problem, the invention provides a kind of light guide plate, comprise the upper surface that is arranged on described light guide plate and the groove that is used for placing blooming piece; The edge that is arranged on described light guide plate also is used for placing the through hole of light source.
Alternatively, described light guide plate comprises that also described through hole is arranged in the described groove for the groove of placing the light source flexible circuit board, and described light source flexible circuit board and described light source weld together.
Alternatively, described light source flexible circuit board is pasted at described channel bottom by adhesive tape, and the degree of depth of described groove is equal to or greater than the thickness of described light source flexible circuit board and described adhesive tape.
Alternatively, the degree of depth of described groove is more than or equal to 0.08 millimeter and be less than or equal to 0.3 millimeter.
Alternatively, the thickness of described light guide plate is more than or equal to 0.2 millimeter and be less than or equal to 1.5 millimeters.
Alternatively, the degree of depth of described groove is equal to or greater than the thickness of described blooming piece.
Alternatively, the degree of depth of described groove is more than or equal to 0.165 millimeter and less than 1.0 millimeters.
Alternatively, the edge side at light source place arranges opening on the described light guide plate, and described opening is used for being connected of light source flexible circuit board and main flexible PCB.
Alternatively, the groove outer in the described light guide plate and described blooming piece protuberance corresponding section arrange a plurality of the first breach, and perhaps the groove outer in the described light guide plate is corresponding with described blooming piece recess arranges a plurality of teats.
Alternatively, described the first breach is rectangle.
Alternatively, the length of described the first breach is more than or equal to 0.5 millimeter and be less than or equal to 3.0 millimeters, and the width of described the first breach is more than or equal to 0.35 millimeter and be less than or equal to 1.0 millimeters.
Alternatively, the groove outer in the described light guide plate also is provided with the second breach of placing adhesive tape and mating with described adhesive tape, and described the second breach is more shallow than described the first breach, and described the first breach is arranged in described the second breach scope.
Alternatively, the degree of depth of described the second breach is more than or equal to 0.05 millimeter and be less than or equal to 0.2 millimeter.
In order to address the above problem, the present invention also provides a kind of backlight that comprises above-mentioned light guide plate, described backlight also comprises: blooming piece, light source and underframe, wherein: the lower surface of described light guide plate is arranged on the described underframe, described underframe comprises reflection horizon and metal level, and described reflection horizon is adjacent with described light guide plate; Described blooming piece is arranged in the groove of described light guide plate.
Alternatively, described light guide plate is fixed on the described underframe by adhesive tape.
Alternatively, the material in described reflection horizon comprises: polyethylene terephthalate (polyethylene terephthalate, PET) is or/and polyethylene fibre.
Alternatively, the thickness range in described reflection horizon comprises: 0.1 millimeter～0.4 millimeter.
Alternatively, the material of described metal level comprises: iron or ferroalloy.
Alternatively, the thickness range of described metal level comprises: 0.1 millimeter～0.3 millimeter.
Alternatively, between described reflection horizon and the described metal level one deck glue is set.
Alternatively, described light source comprises a plurality of LED, and described a plurality of LED is integrated into a lamp bar.
Alternatively, four of described underframe angles arrange respectively a groove.
Alternatively, the difference in height scope between the upper surface of the upper surface of described groove and described light guide plate comprises :-0.3 millimeter～0.3 millimeter.
Compared with prior art, the present invention has the following advantages:
1) is complementary with blooming piece and is used for placing the groove of blooming piece and is complementary with light source and is used for placing the through hole of light source by arranging, thereby provide a kind of light guide plate that can fix with bearing optical diaphragm and light source, so that light guide plate can substitute the partial function of glue frame in the prior art.
2) when being applied to above-mentioned light guide plate in the backlight, can further adopt the underframe that comprises reflection horizon and metal level to realize to the buffer action of display panels with to the fixedly carrying effect of light guide plate, be that light guide plate has substituted the repertoire of glue frame in the prior art in conjunction with underframe, thereby the backlight that can not comprised the glue frame has been realized the narrow frame of backlight.
3) owing to having save the glue frame, thereby save the forming process of glue frame, can save the die sinking expense of glue frame, finally reduced the cost of manufacture of backlight.
4) in the possibility, four angles of described underframe arrange respectively groove, thereby the damage of the display panels that both can avoid the corner of the corner of display panels and underframe to bump causing can avoid again the light of light guide plate to leak.
Description of drawings
Fig. 1 is the stereo decomposing structural representation of prior art backlight;
Fig. 2 is the vertical view of prior art liquid crystal display;
Fig. 3 is the perspective view of light guide plate in the embodiment of the invention;
Fig. 4 is the plan structure schematic diagram of Fig. 3;
Fig. 5 is the local enlarged diagram of Fig. 3;
Fig. 6 is the cross-sectional view along AA direction among Fig. 5;
Fig. 7 is a kind of structural representation of the first breach among Fig. 3;
Fig. 8 is the another kind of structural representation of the first breach among Fig. 3;
Fig. 9 is the stereo decomposing structural representation of backlight in the embodiment of the invention;
Figure 10 is the structural representation of liquid crystal display in the embodiment of the present invention;
Figure 11 is the structural representation of backlight among Figure 10.
Embodiment
For above-mentioned purpose of the present invention, feature and advantage can be become apparent more, below in conjunction with accompanying drawing the specific embodiment of the present invention is described in detail.
Set forth in the following description a lot of details so that fully understand the present invention, implement but the present invention can also adopt other to be different from alternate manner described here, so the present invention has not been subjected to the restriction of following public specific embodiment.
Just as described in the background section, backlight comprises glue frame and chase in the prior art, and the glue frame is used for fixing and bearing optical diaphragm, light guide plate and light source, and the damping fluid LCD panel.But the matching technique more complicated of glue frame and chase, and the existence of glue frame has been so that the border width of backlight has increased the width of glue frame and the gap width between glue frame and the chase, so the border width of backlight is at least more than 0.6 millimeter.
In order to realize the narrow frame of backlight, the invention provides a kind of light guide plate and backlight, be complementary with blooming piece and be used for placing the groove of blooming piece and be complementary with light source and be used for placing the through hole of light source by arranging, thereby provide a kind of light guide plate that can fix with bearing optical diaphragm and light source, so that light guide plate can substitute the partial function of glue frame in the prior art; When being applied to above-mentioned light guide plate in the backlight, can further adopt the underframe that comprises reflection horizon and metal level to realize to the buffer action of display panels with to the fixedly carrying effect of light guide plate, be that light guide plate has substituted the repertoire of glue frame in the prior art in conjunction with underframe, thereby the backlight that can not comprised the glue frame has been realized the narrow frame of backlight; Saved simultaneously the cost of manufacture of backlight.
Be elaborated below in conjunction with accompanying drawing.
With reference to figure 3 and shown in Figure 4, the present embodiment provides a kind of light guide plate, is used for placing blooming piece and light source, and the groove 1 of placement blooming piece is set at the upper surface of described light guide plate.What be positioned at groove 1 periphery is groove outer 7; Edge surface in described light guide plate arranges the through hole 2 of placing light source.
Because light guide plate also needs to arrange in the above the groove 1 that is complementary with blooming piece when realizing the light conducting function, so light guide plate should have certain thickness, and this thickness is greater than the thickness of blooming piece at least; And for so that light source is arranged in light guide plate, the thickness of described light guide plate also is greater than or equals the thickness of light source.
The thickness of light guide plate described in the present embodiment can and be less than or equal to 1.5 millimeters more than or equal to 0.2 millimeter, as: 0.2 millimeter, 0.45 millimeter, 0.8 millimeter, 1.0 millimeters or 1.5 millimeters.Thickness when the thickness of the light guide plate of indication refers to without any groove or through hole herein; With reference to shown in Figure 6, also can be described as the thickness H0 of groove outer 7.With reference to shown in Figure 6, the depth H 1 of described groove 1 can be equal to or greater than the thickness of described blooming piece.Preferably, the depth H 1 of described groove 1 equals the thickness of described blooming piece, and the shape size of described groove 1 is all identical with the shape size of described blooming piece, thus being housed in the described groove 1 of described blooming piece compactness.
Described blooming piece is same as the prior art, as: can comprise the first diffusion sheet, brightening piece and the second diffusion sheet.The thickness of described blooming piece can be more than or equal to 0.165 millimeter and less than 1.0 millimeters, therefore under the prerequisite of depth H 1 less than the thickness of light guide plate that guarantees groove 1, the depth H 1 of groove described in the present embodiment 1 can be more than or equal to 0.165 millimeter and less than 1.0 millimeters, as: 0.165 millimeter, 0.4 millimeter, 0.65 millimeter or 0.9 millimeter.
Described light source is used for providing light, and it can comprise a plurality of LED, and described a plurality of LED can be integrated into a lamp bar.Correspondingly, be provided with a plurality of through holes 2 on the described light guide plate, a plurality of through holes 2 are complementary with a plurality of LED.With reference to shown in Figure 6, the degree of depth of described through hole 2 can be H3.
Need to prove; in other embodiments of the invention; described light source can also adopt the other light sources such as cold cathode fluorescent tube (CCFL), thermic cathode fluorimetric pipe (HCFL), external electrode fluorescent lamp (EEFL), plane fluorescent (FFL), field effect backlight (FE), and it should not limit protection scope of the present invention at this.
In order to guarantee light guide plate to the stability of light source loading, can LED be sticked in the described through hole 2 by glue (as: double faced adhesive tape), thereby through hole 2 is being parallel to size on the described light guide plate direction and can equaling the size sum of LED and glue.
See also Fig. 5, and in conjunction with consulting Fig. 6, in order to realize the control to light source, described LED need to weld together with a light source flexible circuit board (flexible printed circutit, FPC).Preferably, described light guide plate can also comprise for the groove 5 of placing the light source flexible circuit board, described through hole 2 is arranged in the described groove, described light source flexible circuit board is pasted in described groove 5 bottoms by adhesive tape, described light source flexible circuit board and described LED weld together, groove 5 is complementary with described light source flexible circuit board, described light source flexible circuit board is arranged in the described groove 5, thereby the upper surface of light source flexible circuit board can not be higher than the upper surface of light guide plate, can further save the space.Preferably, described light source flexible circuit board is pasted in the bottom of described groove 5 by adhesive tape (as: double faced adhesive tape), so the depth H 2 of described groove 5 can be equal to or greater than the thickness sum of described light source flexible circuit board and this double faced adhesive tape.Preferably, the depth H 2 of described groove 5 equals the thickness sum of described light source flexible circuit board and this double faced adhesive tape, as: as described in the depth H 2 of groove 5 can and be less than or equal to 0.3 millimeter more than or equal to 0.08 millimeter, as: 0.08 millimeter, 0.1 millimeter, 0.13 millimeter, 0.15 millimeter or 0.3 millimeter.
Need to prove, can the section of existence poor (as shown in Figure 6) between the lower surface of the lower surface of described groove 1 and described groove 5, also the section of existence is not poor, and it is specifically determined by the factors such as thickness of blooming piece and power supply flexible PCB.
Described light source flexible circuit board also needs to link to each other with main flexible PCB, thereby in the groove outer 7 of light source place light guide plate edge side an opening 4 need to be set; Perhaps the groove outer 7 of light source place light guide plate edge side is all removed.Described main flexible PCB refers to the flexible PCB of control backlight, and it is same as the prior art, does not repeat them here.
Around the described blooming piece and light source flexible circuit board top all needs to paste shading rubber belt, reveals from light guide plate to prevent light, can also better blooming piece and light source be fixed in the light guide plate simultaneously.After pasting shading rubber belt on the light source flexible circuit board, do not have projecting height directly over the light source flexible circuit board.
In addition, in order better shading rubber belt to be sticked on the edge of light guide plate, simultaneously also in order to prevent that blooming piece is by anti-loaded, can also protuberance be set at the periphery of blooming piece, the groove outer 7 in the described light guide plate arranges a plurality of the first breach 3 with described blooming piece protuberance (not shown) corresponding section.Correspondingly, described blooming piece protuberance can be housed in described the first breach 3.When only having the location matches when described the first breach 3 and described blooming piece protuberance, blooming piece correctly could be placed in the described groove 1.Protection scope of the present invention is not all limited in the shape of described the first breach 3 and position.Need to prove, in other embodiments of the invention, the edge of described blooming piece can comprise a plurality of recesses, at this moment, groove outer in the described light guide plate is corresponding with described blooming piece recess to arrange a plurality of teats, and described teat and described recess are complementary; The edge of described blooming piece can also comprise recess and protuberance simultaneously, and correspondingly, the groove outer of described light guide plate arranges a plurality of teats and the first breach simultaneously, and described the first breach and described protuberance are complementary, and described teat and described recess are complementary.
Comprise four symmetrically arranged the first breach 3 in the present embodiment, and described the first breach 3 is rectangle, the length of described the first breach 3 can and be less than or equal to 3.0 millimeters more than or equal to 0.5 millimeter, as: 0.5 millimeter, 1.5 millimeters or 3.0 millimeters; The width of described the first breach 3 can and be less than or equal to 1.0 millimeters more than or equal to 0.35 millimeter, as: 0.35 millimeter, 0.7 millimeter or 1.0 millimeters.
As an object lesson, with reference to shown in Figure 7, because the existence of described the first breach 3, described blooming piece is housed in described groove 1 and described the first breach 3.Described shading rubber belt stickup also covers the face edge, light guide plate top that comprises described the first breach 3.
As another object lesson, with reference to shown in Figure 8, groove outer 7 in the described light guide plate can also be provided with the second breach 6 of placing adhesive tape and mating with described adhesive tape, and described the second breach 6 is more shallow than described the first breach 3, and described the first breach 3 is arranged in described the second breach 6 scopes.Described adhesive tape is used for the fixed optics diaphragm, can be normal tape, also can be shading rubber belt, only need to play interception just passable for employed shading rubber belt between this moment blooming piece and the light guide plate, therefore can reduce to cover the area of shading rubber belt on the blooming piece, thereby enlarge viewing area backlight.
The thickness of described the second breach 6 can be equal to or greater than the thickness of described adhesive tape.Preferably, the thickness of described the second breach 6 equals the thickness of described adhesive tape, at this moment, is arranged on the upper surface of the shading rubber belt in the second breach 6 and the upper surface flush of described light guide plate.Particularly, described the second breach 6 thickness can and be less than or equal to 0.2 millimeter more than or equal to 0.05 millimeter, as: 0.05 millimeter, 0.1 millimeter, 0.15 millimeter or 0.2 millimeter.
The present embodiment is complementary with blooming piece and is used for placing the groove 1 of blooming piece and is complementary with light source and is used for placing the through hole 2 of light source by arranging, thereby provide a kind of light guide plate that can fix with bearing optical diaphragm and light source, so that light guide plate can substitute the partial function of glue frame in the prior art.
In order to realize the narrow frame of backlight, the present invention also provides a kind of backlight that does not comprise the glue frame, with reference to shown in Figure 9, comprise: shading rubber belt 100, blooming piece 200, light guide plate 300, light source 600 and underframe 500, wherein: described blooming piece 200 is arranged on the upper surface of described light guide plate 300, described light source 600 is arranged on the side of described light guide plate 300, the lower surface of described light guide plate 300 is arranged on the described underframe 500, described underframe 500 comprises reflection horizon (not shown) and metal level (not shown), and described reflection horizon is adjacent with described light guide plate 300.
Wherein, described light guide plate 300, blooming piece 200 and light source 600 are with reference to previous embodiment.Particularly, described light guide plate 300 is mainly used in changing line source into area source, can be fixed on the described underframe 500 by adhesive tape 400 (as: double sticky tape).Described blooming piece 200 specifically can adopt any structure well-known to those skilled in the art, should not limit protection scope of the present invention at this.
Wherein, described shading rubber belt 100 is a rectangular hollow blooming piece, be arranged on described blooming piece 200 upper surfaces around.The upper surface that described shading rubber belt 100 is mainly used in preventing the light leakage and described blooming piece 200 is sticked on described light guide plate 300.
Wherein, described underframe 500 comprises reflection horizon and metal level, being about to reflector plate of the prior art and sheet metal is complex as a whole, described blooming piece 200 and described light source 600 all are fixed on the described light guide plate 300, be that described light guide plate 300 can replace the glue frame to realize the effect of the fixing described blooming piece 200 of carrying and described light source 600, reflection horizon after compound can substitute the realization of glue frame to the buffer action of display panels, final so that save these parts of glue frame in the backlight, realized the narrow frame of backlight; Saved simultaneously the cost of manufacture of backlight.
Wherein, the light that the reflection horizon of described underframe 500 both had been used for not being scattered reflexes to light guide plate 300, also is used for realization to the buffer action of display panels.The material for preparing described reflection horizon can comprise: polyethylene terephthalate is or/and polyethylene fibre.By the reflection horizon of described polyethylene terephthalate and polyethylene fibre preparation can with metal level carry out compound, higher to the luminance factor of light, preferably reflecting effect is namely arranged, and outstanding impact resistance and abrasion resistance is arranged.Need to prove, in other embodiments of the invention, can also adopt other to carry out compound, higher and the material of outstanding impact resistance and abrasion resistance is arranged as the material in reflection horizon to the luminance factor of light with metal level.In addition, the buffer action to display panels can be realized in described reflection horizon.
The thickness range in described reflection horizon can comprise: 0.1 millimeter～0.4 millimeter, as: 0.1 millimeter, 0.15 millimeter, 0.25 millimeter, 0.3 millimeter or 0.4 millimeter etc.
Wherein, the material for preparing the metal level of described underframe 500 can comprise: iron or ferroalloy etc. resistance to wears and the material of impact resistance, concrete as: model is the steel of SUS430, steel that model is SUS304 or aluminium plating zinc plate etc.
The thickness range of described metal level can comprise: 0.1 millimeter～0.3 millimeter, as: 0.1 millimeter, 0.15 millimeter, 0.2 millimeter, 0.25 millimeter or 0.3 millimeter etc.
Be provided with glue-line between described reflection horizon and the described metal level, but therefore the very thin thickness of described glue-line can ignore.
The shape of described underframe 500 can be for hollow, the rectangular parallelepiped of an opening is arranged, thereby described blooming piece 200 and light guide plate 300 are arranged in the described rectangular parallelepiped.
The thickness of described underframe 500 equals the thickness of described metal level and the thickness sum in described reflection horizon, and equal the border width of backlight, therefore the scope of the border width of described backlight can comprise: 0.2 millimeter～0.7 millimeter, as: 0.2 millimeter, 0.3 millimeter, 0.45 millimeter, 0.55 millimeter or 0.7 millimeter etc.
At this moment, the border width minimum of described backlight can be 0.2 millimeter, its with prior art in the border width minimum of backlight be 0.6 millimeter and compare, reduced 2/3rds.
When being applied to above-mentioned backlight in the liquid crystal display, with reference to shown in Figure 10, described liquid crystal display can comprise: upper Polarizer 820, be positioned at described upper Polarizer 820 lower surfaces display panels 900, be positioned at the lower Polarizer 810 of described display panels 900 lower surfaces and be positioned at the backlight 111 of described lower Polarizer 810 lower surfaces, described backlight 111 comprises underframe, and lower Polarizer 810, display panels 900 and upper Polarizer 820 are positioned at described underframe successively.
Wherein, described display panels 900 can comprise color membrane substrates and array base palte and the liquid crystal layer between described color membrane substrates and described array base palte that is oppositely arranged, and it is known for those skilled in the art, therefore do not repeat them here.
As a preferred version, with reference to shown in Figure 11, and in conjunction with consulting Fig. 9, Figure 11 shows that the surface structure schematic diagram of a side of liquid crystal display shown in Figure 10, four angles of described underframe 500 arrange respectively groove.Particularly, be lower than the vertical height D2 of all the other positions at the vertical height D1 of the grooves at four jiaos of underframe 500 places.Because blooming piece is arranged in the groove of light guide plate 300, therefore the upper surface of described backlight 111 zone lines is light guide plate 300, the upper surface of fringe region is shading rubber belt 100, and described shading rubber belt 100 is between lower Polarizer 810 and described light guide plate 300.
The effect that the place, four angles of described underframe 500 arranges groove is to avoid the corner (as: glass) of display panels 900 and the corner of underframe 500 to bump, thereby damages display panels 900; Can also avoid the light of light guide plate 300 to leak.Correspondingly, described groove can not be too dark, leaks with the light of avoiding light guide plate 300; Described groove can not be too shallow, bumps with the corner with underframe 500, the corner (as: glass) of avoiding display panels 900.Therefore, the setting of the vertical height of groove occurs to leak with the light that guarantees to avoid light guide plate 300 and avoids the corner of the corner of display panels 900 and underframe 500 to bump and is as the criterion.The span of the difference in height between the upper surface of described groove and described light guide plate 300 upper surfaces can comprise :-0.3 millimeter～0.3 millimeter, as :-0.3 millimeter ,-0.2 millimeter, 0 millimeter, 0.1 millimeter or 0.3 millimeter etc.Preferably, the difference in height between the upper surface of the upper surface of described groove and described light guide plate 300 is 0, i.e. the upper surface flush of the upper surface of described groove and described light guide plate 300.
The difference of the height of the upper surface of described display panels 900 and described groove equals difference in height, the thickness of lower polaroid 810 and the thickness sum of described anti-dazzling screen 100 between the upper surface of the upper surface of described groove and described light guide plate 300.
So far, realized the narrow frame of backlight and liquid crystal display.
Although the present invention discloses as above with preferred embodiment, the present invention is defined in this.Any those skilled in the art without departing from the spirit and scope of the present invention, all can make various changes or modifications, so protection scope of the present invention should be as the criterion with the claim limited range.
Claims (23)
1. a light guide plate is characterized in that, described light guide plate comprises the upper surface that is arranged on described light guide plate and the groove that is used for placing blooming piece; The edge that is arranged on described light guide plate also is used for placing the through hole of light source.
2. light guide plate as claimed in claim 1 is characterized in that, described light guide plate comprises that also described through hole is arranged in the described groove for the groove of placing the light source flexible circuit board, and described light source flexible circuit board and described light source weld together.
3. light guide plate as claimed in claim 2 is characterized in that, described light source flexible circuit board is pasted at described channel bottom by adhesive tape, and the degree of depth of described groove is equal to or greater than the thickness of described light source flexible circuit board and described adhesive tape.
4. light guide plate as claimed in claim 3 is characterized in that, the degree of depth of described groove is more than or equal to 0.08 millimeter and be less than or equal to 0.3 millimeter.
5. light guide plate as claimed in claim 1 is characterized in that, the thickness of described light guide plate is more than or equal to 0.2 millimeter and be less than or equal to 1.5 millimeters.
6. light guide plate as claimed in claim 1 is characterized in that, the degree of depth of described groove is equal to or greater than the thickness of described blooming piece.
7. light guide plate as claimed in claim 5 is characterized in that, the degree of depth of described groove is more than or equal to 0.165 millimeter and less than 1.0 millimeters.
8. light guide plate as claimed in claim 1 is characterized in that, the edge side at light source place arranges opening on the described light guide plate, and described opening is used for being connected of light source flexible circuit board and main flexible PCB.
9. light guide plate as claimed in claim 1, it is characterized in that, the groove outer of described light guide plate and described blooming piece protuberance corresponding section arrange a plurality of the first breach that are complementary, and perhaps the groove outer of described light guide plate is corresponding with described blooming piece recess arranges a plurality of teats.
10. light guide plate as claimed in claim 9 is characterized in that, described the first breach is rectangle.
11. light guide plate as claimed in claim 10 is characterized in that, the length of described the first breach is more than or equal to 0.5 millimeter and be less than or equal to 3.0 millimeters, and the width of described the first breach is more than or equal to 0.35 millimeter and be less than or equal to 1.0 millimeters.
12. light guide plate as claimed in claim 9, it is characterized in that, the groove outer of described light guide plate also is provided with the second breach of placing adhesive tape and mating with described adhesive tape, and described the second breach is more shallow than described the first breach, and described the first breach is arranged in described the second breach scope.
13. light guide plate as claimed in claim 12 is characterized in that, the degree of depth of described the second breach is more than or equal to 0.05 millimeter and be less than or equal to 0.2 millimeter.
14. backlight, it is characterized in that, comprise: each described light guide plate, blooming piece, light source and underframe in the claims 1 to 13, wherein: the lower surface of described light guide plate is arranged on the described underframe, described underframe comprises reflection horizon and metal level, and described reflection horizon is adjacent with described light guide plate; Described blooming piece is arranged in the groove of described light guide plate.
15. backlight as claimed in claim 14 is characterized in that, described light guide plate is fixed on the described underframe by adhesive tape.
16. backlight as claimed in claim 14 is characterized in that, the material in described reflection horizon comprises: polyethylene terephthalate is or/and polyethylene fibre.
17. backlight as claimed in claim 16 is characterized in that, the thickness range in described reflection horizon comprises: 0.1 millimeter～0.4 millimeter.
18. backlight as claimed in claim 14 is characterized in that, the material of described metal level comprises: iron or ferroalloy.
19. backlight as claimed in claim 18 is characterized in that, the thickness range of described metal level comprises: 0.1 millimeter～0.3 millimeter.
20. backlight as claimed in claim 14 is characterized in that, between described reflection horizon and the described metal level one deck glue is set.
21. backlight as claimed in claim 14 is characterized in that, described light source comprises a plurality of LED, and described a plurality of LED is integrated into a lamp bar.
22. backlight as claimed in claim 14 is characterized in that, four angles of described underframe arrange respectively a groove.
23. backlight as claimed in claim 14 is characterized in that, the difference in height scope between the upper surface of described groove and the upper surface of described light guide plate comprises :-0.3 millimeter～0.3 millimeter.
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| CN201110328120.0A CN103076649B (en) | 2011-10-25 | 2011-10-25 | LGP and backlight |
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| CN201110328120.0A CN103076649B (en) | 2011-10-25 | 2011-10-25 | LGP and backlight |
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| CN103076649B CN103076649B (en) | 2016-05-04 |
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| WO2016173156A1 (en) * | 2015-04-30 | 2016-11-03 | 武汉华星光电技术有限公司 | Light guide plate, backlight module, and liquid crystal display |
| CN106412162A (en) * | 2016-11-11 | 2017-02-15 | 京东方科技集团股份有限公司 | Shell in mobile terminal and mobile terminal |
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