Utility model content
In view of the above drawbacks of the prior art, the technical problem to be solved by the utility model is to provide a kind of can existWhen local display, the backlight module and display panel of unit work consumptiom under the conditions of same display brightness are reduced.
To achieve the above object, the utility model provides a kind of backlight module, comprising:
Light guide plate；
Backlight is equipped with the light guide plate；
Backboard, for carrying the light guide plate and backlight；
Glue frame, for being equipped with the backboard；
The light guide plate includes:
At least two pieces guide-lighting blocks,
At least one separator, the separator are arranged between an at least adjacent surface for the adjacent two pieces guide-lighting blocks,For separating the guide-lighting block.
Optionally, the separator is arranged between the upper top surface of the light guide plate and bottom surface, and with the upper top surfaceIt is obliquely installed with bottom surface in 30 degree to 60 degree angles, and the perspective plane of the separator and the guide-lighting block in the horizontal directionIt is completely overlapped.
Optionally, the first surface and second surface of the separator are coated respectively with reflecting material or light screening material；
The upper end of the separator is flushed with the upper top surface of the light guide plate, the lower end of the separator and the light guide plateBottom surface flush.In the present embodiment, which can be reflector plate, and at least side is coated with reflecting material,Simply coated there can also be light screening material, the barn door for preventing optical crosstalk is made, if this light screening material can be realized diffusing reflection,When can increase local display by a small margin, the brightness of regional area, if reflector plate, then can increase by a relatively large margin it is locally aobviousShow brightness；When the separator is reflector plate, which can be aluminium reflector plate, be also possible to two-sided silver-colored reflector plate, canIt is light-exposed near infrared spectral range, argentum reflecting layer is that reflectivity is highest in all metallic reflectors.Due to aluminium, silver, copper etc.Material is easy to aoxidize and reduce performance in air, which can be protected using dielectric film, commonly usesProtective coatings have silicon monoxide, magnesium fluoride, silica, aluminum oxide etc.；In addition, the two-sided silver-colored reflector plate is set asUpper end is flushed with the upper top surface of light guide plate, and lower end is flushed with the bottom surface of light guide plate, then is in order to completely by each guide-lighting blockThe completely isolated of light is carried out, is avoided in local display, the light for putting bright area is gone in non-lit up region, and brightness is caused to becomeDark problem.
Optionally, the separator is that first surface and second surface are coated with the two-sided silver of silver-colored reflecting material insteadPiece is penetrated, is arranged between the upper top surface of the light guide plate and bottom surface, and is in 30 degree to 60 degree with the upper top surface and bottom surfaceAngle is obliquely installed.In the present embodiment, more specifically, which is double-sided reflecting piece；The two-sided silver-colored reflector plateThe junction of guide-lighting block can be inclined to 60 degree in 30 degree, optionally, which is arranged in 45 degree of angles,Particularly, for side-light backlight, the light of irradiation thereon preferably can be gone out light to light guide plate by upper surfaceFace guidance；And the lower surface of two-sided silver-colored reflector plate, then the light of irradiation thereon can be reflected into guide-lighting block, so as to guide-lighting blockLight is oriented to light-emitting surface；In addition, when the two-sided silver-colored reflector plate is in 45 degree of angles, on the two-sided silver-colored reflector plate upper end and light guide plateIn the case that top surface flushes, the contact surface of top surface is minimum on the reflector plate and light guide plate, can be to avoid because of two-sided silver-colored reflector plateIt is arranged and occurs the possibility of bar shaped concealed wire.
Optionally, the guide-lighting block further include:
The lower part for the two-sided silver-colored reflector plate being obliquely installed is arranged in light source reserved place；
The light source reserved place includes lamp holder and the lamp position for installing backlight, and the upper surface of the lamp holder is led with describedThe bottom surface of tabula rasa flushes setting；
The backlight is arranged at the light source reserved place.In the present embodiment, specifically, the light source reserved place includesLamp holder and lamp position for installing backlight, the upper surface of the lamp holder should actually flush setting with the bottom surface of light guide plate,In this way, the problem of backlight is just not in, and light is from the lower end oblique fire of two-sided silver-colored reflector plate to non-lit up region, can incite somebody to actionThe light of the corresponding backlight of each leaded light block is convergent in corresponding guide-lighting block and regional area, when reducing local display, pointThe problem of backlight waste of bright area；In addition, the light source reserved place belongs to the set-up mode of substantive side-light backlight, this 45The light of light source at light source reserved place is reflected into guide-lighting block by the lower surface for spending the two-sided silver-colored reflector plate being obliquely installed, meanwhile,Due to being obliquely installed, light source reserved place is sheltered from, avoids the setting because of the backlight at light source reserved place, and causes backlightThe problem of source local luminance unevenness.
Optionally, the light guide plate and separator are integrally formed.In the present embodiment, the light guide plate and separator are oneMolding ground, when making light guide plate, is placed in separator in light guide plate, and light guide plate is divided into guide-lighting and backlight and controls phaseMutual independent multiple regions；Specifically, it is also necessary to reserve light source reserved place in the region interval of light guide plate.
Optionally, the guide-lighting block independently forms, multiple guide-lighting block splicing compositions light guide plate, and described pointThe junction of leaded light block described in every two is arranged in spacing body.In the present embodiment, which is independently molding, moldingAssembled light guide plate afterwards, and the junction between guide-lighting block is just arranged in separator.
Optionally, it is arranged in a crossed manner in the horizontal and vertical direction of the light guide plate to extend through the light guide plate for the separatorThere are two groups, separator described in two groups will be divided into 3*3 totally nine pieces of guide-lighting blocks between the light guide plate；
The guide-lighting block is located in the middle not to be connected to the outer surface of the light guide plate.In the present embodiment, each leadLight block can be same size, be also possible to it is different size of, it is true with specific reference to the concrete condition of light guide plate and display panelIt is fixed；In addition, one of them of the guide-lighting block of the utility model can be the middle part that entire display area is arranged in, with display areaThe outer surface of four sides light guide plate in other words is not directly contacted with, and the display panel can be side-light backlight panel.
Optionally, the backlight includes the first backlight and the second backlight；
First backlight includes:
First sub-light source is arranged on side wall of the backboard relative to the light guide plate；
Second sub-light source is arranged at the light source reserved place；
Second backlight is evenly spaced in the incidence surface of the light guide plate.In the present embodiment, specifically, first backLight source, that is, side-edge type backlight, and second backlight, that is, direct-light-type backlight；Optionally, which can be only arrangedIt is uniformly distributed multiple in a side of the light guide plate, it is also possible to that the two sides of light guide plate are arranged in, it is uniformly distributed multiple；SeparatelyOutside, second sub-light source, at the reserved place of the light source, the junction along every two pieces guide-lighting blocks is uniformly distributed multiple for setting.
The invention also discloses a kind of display panels, comprising: as the utility model it is any disclosed in backlight module, withAnd display module and front frame；
The backlight module, display module and front frame assemble to form the display panel.
The light guide plate of the utility model is split as at least two pieces guide-lighting blocks by separator interval, and each leaded light block will be rightIt should be controlled respectively in the backlight in a display area of display interface, each leaded light block region, in this way, when only needing to lightWhen one of display area, it can correspond to and close the backlight of other display areas；And due to the presence of the separator,The light of backlight in display area can be good at being convergent in corresponding guide-lighting block and display area, be not in because of backlightThe problem of light in source is irradiated to non-lit up guide-lighting block and display area and the brightness in display area is caused to be substantially reduced；SeparatelyOutside, which is reflector plate, in this way, in each leaded light block, if corresponding backlight is wanted by separator to non-lit up aobviousWhen showing regional diffusion, which can reflect back into this some light in corresponding guide-lighting block and display area, reduceThe problem of loss of light is reduced in back light source brightness constant situation, and display area brightness reduces；Certainly, the separator is notIt is that reflector plate is also possible, even diffusing reflection, which can also collect a part of light, returns to corresponding guide-lighting block and viewing areaIn domain, only effect is good not as reflector plate, but in selection, scope of selecting material is wider, easily choose it is applicable it is low atThis material.
Specific embodiment
Specific structure and function details disclosed herein are only representative, and are for describing the utility modelExemplary embodiment purpose.But the utility model can be implemented by many alternative forms, and should notIt is construed as being limited only by the embodiments set forth herein.
In the description of the present invention, it should be understood that term " center ", " transverse direction ", "upper", "lower", " left side ",The orientation or positional relationship of the instructions such as " right side ", "vertical", "horizontal", "top", "bottom", "inner", "outside" is based on the figureOrientation or positional relationship is merely for convenience of describing the present invention and simplifying the description, rather than the dress of indication or suggestion meaningIt sets or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as to the utility modelLimitation.In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importanceOr implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed orImplicitly include one or more of the features.In the description of the present invention, unless otherwise indicated, the meaning of " multiple "It is two or more.In addition, term " includes " and its any deformation, it is intended that cover and non-exclusive include.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacifiedDress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrallyConnection；It can be mechanical connection, be also possible to be electrically connected；Can be directly connected, can also indirectly connected through an intermediary,It can be the connection inside two elements.For the ordinary skill in the art, above-mentioned art can be understood with concrete conditionThe concrete meaning of language in the present invention.
Term used herein above is not intended to limit exemplary embodiment just for the sake of description specific embodiment.UnlessContext clearly refers else, otherwise singular used herein above "one", " one " also attempt to include plural number.Also answerWhen understanding, term " includes " and/or "comprising" used herein above provide stated feature, integer, step, operation,The presence of unit and/or component, and do not preclude the presence or addition of other one or more features, integer, step, operation, unit,Component and/or combination thereof.
The similar unit of structure is to be given the same reference numerals in the figure.
Local display technology is a kind of technology being widely noticed at present, and each TV, computer, liquid crystal producer are directed to local backThe technology that light is adjusted has carried out various trials.
Wherein, there is pure local display technology, i.e., switch and brightness regulation are not carried out to backlight, at least control liquid crystal surfaceThe overturning of plate, to achieve the purpose that local display, but such way, actually due to accounting for the backlight power consumption of major part without realBorder is reduced, thus is unable to reach the apparent purpose for reducing power consumption, cannot achieve green energy conservation.
Secondly, be Local Dimming (local backlight adjusting), Local Dimming be in local display technology mostIt is easily achieved, the most apparent technology of effect.Specifically, mark off multiple display areas, when only needing a portion aobviousWhen showing that region is lighted, the backlight in the region is constant, and the backlight in other regions is closed, and so just can reach local displayPurpose, while can achieve the purpose that reduce power consumption.But in practical application, due to electric bright area backlight, in fact veryMost light can be diffused into non-lit up region, so that under backlight equivalent brightness is adjusted, after local display, local displayThe brightness in region can be decreased obviously.In order to solve this problem, so that when local display, brightness when display brightness and full screen displayQuite, technical staff figure out thousand and one way, such as the backlight in non-lit up region is not closed, and only do dimmed processing or non-pointBright area is still lighted close to one week backlight of point bright area, to reach the backlight compensation point bright area back by non-lit up regionThe effect of brightness；For another example being diffused into the light in non-lit up region to compensate by the brightness for improving point bright area and maintainingThe purpose of brightness inconvenience.
But above-mentioned technical solution, actually the case where not changing display brightness and not changing liquid crystal overturning controlUnder, when existing scheme local display, the case where unit work consumptiom needed is above full screen display.
Fig. 1 is a kind of schematic diagram of backlight module of the utility model, with reference to Fig. 1 it is found that the utility model provides one kindBacklight module, comprising:
Include:
Light guide plate 10；
Optical diaphragm 20 is arranged in 10 light-emitting surface of light guide plate；
Backlight is equipped with the light guide plate 10；
Backboard 40, for carrying the light guide plate 10 and backlight；
Glue frame 50, for being equipped with the backboard 40；
The light guide plate 10 includes:
At least two pieces guide-lighting blocks 12,
An at least adjacent surface for the adjacent two pieces guide-lighting blocks 12 is arranged at least one separator 11, the separator 11Between, for separating the guide-lighting block 12.
Wherein, which can be made of optical grade acryl plates or PC material, can also use other materialsMaterial is made, and the light guide plate can be used for converting area source for the light of backlight, is also used as him and uses.
Wherein, the backboard can be it is practical significance, corresponding there are the backboards of entity, led there are corresponding for carrying thisThe carrier of tabula rasa and backlight, but if the LED light of the backlight is arranged in the light guide plate, then the backboard is then the leaded lightPlate plays the part plate body (i.e. the backboard not practical there are a corresponding back board structures) of carrying effect.Similarly, which canTo be that there are the glue frames of entity on practical significance, correspondence, the backboard is fixed for cooperating, there are a backboard knots if not practicalPractical corresponding structure may be not present then the glue frame is also possible to a virtual component in structure.Again similarly, the optical diaphragmThere may be individual structures, are used for uniform light, and converge the effects of wide-angle light is observed for front, if but light guide plateIf developing to the effects of just capable of capable of completing uniform light without the optical diaphragm, which not practical can existOne corresponding structure.
The light guide plate of the utility model is split as at least two pieces guide-lighting blocks by separator interval, and each leaded light block will be rightIt should be controlled respectively in the backlight in a display area of display interface, each leaded light block region, in this way, when only needing to lightWhen one of display area, it can correspond to and close the backlight of other display areas；And due to the presence of the separator,The light of backlight in display area can be good at being convergent in corresponding guide-lighting block and display area, be not in because of backlightThe problem of light in source is irradiated to non-lit up guide-lighting block and display area and the brightness in display area is caused to be substantially reduced；SeparatelyOutside, which is reflector plate, in this way, in each leaded light block, if corresponding backlight is wanted by separator to non-lit up aobviousWhen showing regional diffusion, which can reflect back into this some light in corresponding guide-lighting block and display area, reduceThe problem of loss of light is reduced in back light source brightness constant situation, and display area brightness reduces；Certainly, the separator is notIt is that reflector plate is also possible, even diffusing reflection, which can also collect a part of light, returns to corresponding guide-lighting block and viewing areaIn domain, only effect is good not as reflector plate, but in selection, scope of selecting material is wider, easily choose it is applicable it is low atThis material.
The present embodiment is optional, and the separator 11 is arranged between the upper top surface of the light guide plate and bottom surface, and withThe upper top surface and bottom surface are obliquely installed in 30 degree to 60 degree angles, and the separator 11 and the guide-lighting block 12 are in levelPerspective plane on direction is completely overlapped.
The present embodiment is optional, the first surface and second surface of the separator 11 be coated respectively with reflecting material orLight screening material；
The upper end of the separator 11 is flushed with the upper top surface of the light guide plate 10, the lower end of the separator 11 and instituteThe bottom surface for stating light guide plate 10 flushes.In the present embodiment, which can be reflector plate, can also be shadingMaterial is made, and prevents the barn door of optical crosstalk, if this light screening material can be realized diffusing reflection, it is aobvious can to increase part by a small marginWhen showing, the brightness of regional area then being capable of increase local display brightness by a relatively large margin if reflector plate；When the separator isWhen reflector plate, which can be aluminium reflector plate, be also possible to for two-sided silver-colored reflector plate, in visible light near infrared spectrum modelIn enclosing, argentum reflecting layer is that reflectivity is highest in all metallic reflectors.Since the materials such as aluminium, silver, copper are easy in airIt aoxidizes and reduces performance, which can be protected using dielectric film, and common Protective coatings have an oxygenSiClx, magnesium fluoride, silica, aluminum oxide etc.；In addition, the two-sided silver-colored reflector plate is set as the upper top of upper end and light guide plateFace flushes, and lower end is flushed with the bottom surface of light guide plate, then be in order to which each guide-lighting block is completely carried out the completely isolated of light,It avoids in local display, the light for putting bright area is gone in non-lit up region, and the problem that brightness is dimmed is caused.
The present embodiment is optional, and separator 11 is that first surface and second surface are coated with the two-sided double of silver-colored reflecting materialFace silver reflector plate 111 is arranged between the upper top surface and bottom surface of the light guide plate 10, and is in the upper top surface and bottom surface30 degree to 60 degree angles are obliquely installed.In the present embodiment, more specifically, which is double-sided reflecting piece；This pairFace silver reflector plate is in 45 degree of angle settings, and particularly, for side-light backlight, upper surface will preferably can irradiate itOn light to the light-emitting surface of light guide plate guide；And the lower surface of two-sided silver-colored reflector plate, then it can be anti-by the light of irradiation thereonIt is mapped in guide-lighting block, so that light is oriented to light-emitting surface by guide-lighting block；In addition, the two-sided silver-colored reflector plate can incline in 30 degree to 60 degreeThe junction of guide-lighting block is tiltedly set, optionally, when which is in 45 degree of angles, in the two-sided silver-colored reflector plate upper endIn the case that top surface flushes on light guide plate, the contact surface of top surface is minimum on the reflector plate and light guide plate, can be to avoid because two-sidedThe setting of silver-colored reflector plate and there is the possibility of bar shaped concealed wire.
The present embodiment is optional, guide-lighting block 10 further include:
The lower part for the two-sided silver-colored reflector plate 111 being obliquely installed is arranged in light source reserved place 13；
The light source reserved place 13 includes that lamp holder (not shown) and the lamp position for installing backlight (are not shown in figureOut), the upper surface of the lamp holder flushes setting with the bottom surface of the light guide plate 10；
The backlight is arranged at the light source reserved place 13.In the present embodiment, specifically, the light source reserved place packetLamp holder and the lamp position for installing backlight are included, the upper surface of the lamp holder should actually be flushed with the bottom surface of light guide plate to be setIt sets, in this way, the problem of backlight is just not in, and light is from the lower end oblique fire of two-sided silver-colored reflector plate to non-lit up region, energyThe enough light by the corresponding backlight of each leaded light block is convergent in corresponding guide-lighting block and regional area, reduces local displayWhen, put bright area backlight waste the problem of；In addition, the light source reserved place belongs to the setting side of substantive side-light backlightThe light of light source at light source reserved place is reflected into guide-lighting block by the lower surface of formula, this 45 degree two-sided silver-colored reflector plates being obliquely installedIt is interior, simultaneously as being obliquely installed, light source reserved place is sheltered from, avoids the setting because of the backlight at light source reserved place, andThe problem of causing backlight local brightness disproportionation.
The present embodiment is optional, guide-lighting block 10 further include:
Light source reserved place 13, corresponding each guide-lighting block 12 are respectively set；
The control of the corresponding light source reserved place 13 of each guide-lighting block 12 is mutually indepedent.In the present embodiment, the light sourceReserved place can be the set-up mode of side-light backlight, be also possible to the set-up mode of direct-light-type backlight, and the light source is reservedPosition can be used for being arranged backlight and control the switch of backlight；Wherein, the corresponding light source reserved place of each guide-lighting blockIndependently of each other, the power consumption of backlight is reduced while local display in local display, to carry out corresponding control, thusRealize the purpose of green energy conservation.
The present embodiment is optional, and light guide plate 10 and separator 11 are integrally formed.In the present embodiment, the light guide plate and separationPart is to be integrally formed ground, and when making light guide plate, separator is placed in light guide plate, and light guide plate is divided into guide-lighting and backlightSource controls mutually independent multiple regions；Specifically, it is also necessary to reserve light source reserved place in the region interval of light guide plate.
The present embodiment is optional, and guide-lighting block 12 independently forms, and multiple guide-lighting splicings of block 12 form the leaded lightThe junction of leaded light block 12 described in every two is arranged in plate 10, the separator 11；
The guide-lighting block 12 is located in the middle not to be connected to the outer surface of the light guide plate 10.It, should in the present embodimentGuide-lighting block is independently molding, assembled light guide plate after molding, and the company between guide-lighting block is just arranged in separatorMeet place.
The present embodiment is optional, and the separator 11 extends through described lead in the horizontal and vertical direction of the light guide plate 10Tabula rasa 10 is arranged in a crossed manner two groups, and separator 11 described in two groups will be divided into 3*3 totally nine pieces of guide-lighting blocks 12 between the light guide plate 10；
The guide-lighting block is located in the middle not to be connected to the outer surface of the light guide plate.In the present embodiment, each leadLight block can be same size, be also possible to it is different size of, it is true with specific reference to the concrete condition of light guide plate and display panelIt is fixed；In addition, one of them of the guide-lighting block of the utility model can be the middle part that entire display area is arranged in, with display areaThe outer surface of four sides light guide plate in other words is not directly contacted with, and the display panel can be side-light backlight panel.
The present embodiment is optional, and the backlight includes the first backlight and the second backlight；
First backlight includes:
First sub-light source 31 is arranged on side wall of the backboard 40 relative to the light guide plate 10；
Second sub-light source 32 is arranged at the light source reserved place 13；
Second backlight is evenly spaced in the incidence surface of the light guide plate 10.In the present embodiment, specifically, this firstBacklight, that is, side-edge type backlight, and second backlight, that is, direct-light-type backlight；Optionally, which can only setA side in the light guide plate is set, it is uniformly distributed multiple, it is also possible to that the two sides of light guide plate are arranged in, it is uniformly distributed multiple；In addition, second sub-light source, at the reserved place of the light source, the junction along every two pieces guide-lighting blocks is uniformly distributed multiple for setting.
The present embodiment is optional, and backlight includes direct-light-type backlight.In the present embodiment, which is also possible to directlyThe backlight of following formula, cooperation light guide plate setting.
The backlight module of the utility model, including light guide plate, the light guide plate are split as at least two pieces by separator intervalGuide-lighting block, each leaded light block will correspond to a display area of display interface, the backlight difference in each leaded light block regionControl, in this way, can correspond to when only needing to light one of display area and close the backlight of other display areas；And due to the presence of the separator, the light of the backlight in display area can be good at being convergent on corresponding guide-lighting block and showShow in region, is not in be caused in display area because the light of backlight is irradiated to non-lit up guide-lighting block and display areaThe problem of brightness is substantially reduced.
Fig. 2 is a kind of schematic diagram of display panel of the utility model, with reference to Fig. 2, in conjunction with Fig. 1 it is found that the utility model alsoDisclose a kind of display panel 200, comprising: as the utility model it is any disclosed in 60 and of backlight module 100 and display moduleFront frame 70；
The backlight module 100, display module 60 and the assembling of front frame 70 form the display panel.
The display panel of the utility model includes backlight module, which includes light guide plate, and the light guide plate is by dividingSpacing body interval is split as at least two pieces guide-lighting blocks, and each leaded light block will correspond to a display area of display interface, each leadBacklight in light block region controls respectively, in this way, can correspond to when only needing to light one of display area by otherThe backlight of display area is closed；And due to the presence of the separator, the light of the backlight in display area can be fineBe convergent in corresponding guide-lighting block and display area, be not in because the light of backlight is irradiated to non-lit up guide-lighting block and displayRegion and the problem of cause the brightness in display area to be substantially reduced.
The panel of the utility model can be TFT-LCD panel (thin film transistor-liquid crystalDisplay), TN panel (full name is Twisted Nematic, i.e. twisted nematic panel), IPS panel (In-PlaneSwitching, plane conversion), VA panel (vertically match by Multi-domain Vertical Alignment, more quadrantsTo technology), it is of course also possible to be other kinds of panel, it is applicable in.
It, cannot the above content is specific preferred embodiment further detailed description of the utility model is combinedAssert that the specific implementation of the utility model is only limited to these instructions.For the ordinary skill of the utility model technical fieldFor personnel, without departing from the concept of the premise utility, a number of simple deductions or replacements can also be made, should all regardTo belong to the protection scope of the utility model.