CN102338305A - Backlight module and display device comprising same - Google Patents
Backlight module and display device comprising same Download PDFInfo
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- CN102338305A CN102338305A CN2010102382676A CN201010238267A CN102338305A CN 102338305 A CN102338305 A CN 102338305A CN 2010102382676 A CN2010102382676 A CN 2010102382676A CN 201010238267 A CN201010238267 A CN 201010238267A CN 102338305 A CN102338305 A CN 102338305A
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- catoptric arrangement
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Abstract
The invention relates to a backlight module and a display device comprising the same. The backlight module comprises a back plate, at least one reflection structure, a plurality of light guide plates, a plurality of auxiliary reflection structures and a plurality of light sources; the at least one reflection structure is positioned on the back plate; the light guide plates are configured above the at least one reflection structure; each light guide plate is provided with at least one inner side surface and at least one light-incoming surface; the light guide plates are separated mutually so as to form at least one second clearance. The auxiliary reflection structure is positioned on the inner side surface; and the light sources face to the light-incoming surfaces of the light guide plates. So the optimal partial dimming function can be achieved.
Description
Technical field
The present invention relates to a kind of backlight module and comprise the display unit of this backlight module, but a kind of backlight module of local dimming and comprise the display unit of this backlight module particularly.
Background technology
With reference to Figure 1A, show the perspective exploded view of existing display unit.With reference to Figure 1B, show the cross-sectional schematic of existing display unit.This display unit 1 comprises backlight module 10, display floater 16, signal processor (not shown) and a plurality of controller (not shown).This backlight module 10 comprises backboard 11, reflector plate 12, LGP 13, a plurality of LED14 and at least one diaphragm 15.This backboard 11 is the aluminium backboard, and it is the main framework of this backlight module 10, in order to hold this reflector plate 12, this LGP 13, said LED14 and this diaphragm 15.Said reflector plate 12 is positioned on this backboard 11 with the attaching mode, and it is the reflector plate of whole piece.This LGP 13 is disposed at this reflector plate 12 tops, and it has at least one incidence surface (periphery surface).
Said LED14 regards to the incidence surface of this LGP 13, and around this LGP 13.This diaphragm 15 is disposed on this LGP 13.This display floater 16 is disposed at the top of this diaphragm 15 of this backlight module 10 relatively.This signal processor is in order to convert vision signal into control signal (comprise luminance signal and show signal).Said controller is electrically connected at the LED14 of this signal processor, this display floater 16 and this backlight module 10; In order to receive this control signal (comprise luminance signal and show signal); And drive the LED14 of this backlight module, and show that according to this signal drives this display floater 16 according to this luminance signal.
This display unit 1 said controller control section LED14's capable of using is bright dark, and this backlight module 10 is done local light modulation.With Figure 1A is example, and brighter for the upper right side if this vision signal is desired in the picture displayed, other zones are darker, and it is bright then utilizing said controller control to be positioned at the peripheral LED14 in these LGP 13 upper right side, and other LED14 are dark.Likewise, said method also can be controlled the bright dark of these LGP 13 other specific zonules, and reaches the function of local dimming, thus, and to reduce the waste of the energy.
The shortcoming of this display unit 1 is that the function of its local dimming is not good.In last example, when to be positioned at the LED14 of these LGP 13 end faces outside right-hand be bright, the light that said LED14 sent can advance to the below of this LGP 13, and make this LGP 13 Lower Half and can't become very dark.
In addition; Also having another kind of background technology is the pixel of utilizing in the control display floater 16, utilizes the voltage or the Current Control liquid crystal anglec of rotation to decide the angular dimension of unlatching to reach the purpose of local dimming, still; Because pixel has the problem of light leak; Above-mentioned utilization adjustment pixel is used as its poor effect of means of local dimming, and because of the light source of backlight module is necessary for normally open, is not inconsistent energy-conservation trend design.
Therefore, be necessary to provide an innovation and be rich in the backlight module of progressive and comprise the display unit of this backlight module, to address the above problem.
Summary of the invention
The present invention provides a kind of backlight module, and it comprises backboard, at least one catoptric arrangement, a plurality of LGP, a plurality of auxiliary catoptric arrangement and a plurality of light source.This at least one catoptric arrangement is positioned on this backboard.Said LGP is disposed at this at least one catoptric arrangement top, and each LGP has at least one medial surface and at least one incidence surface, and said LGP is apart and form at least one second space.Said auxiliary catoptric arrangement is positioned at said medial surface.Said surface of light source is for the incidence surface of said LGP.Thus, can reach best local dimming function.
The present invention provides a kind of backlight module in addition, and it comprises backboard, at least one catoptric arrangement, LGP and a plurality of light source.This at least one catoptric arrangement is positioned on this backboard.This LGP is positioned at this at least one catoptric arrangement top, and this LGP has exiting surface, and this exiting surface has at least one groove, and this at least one groove is divided into a plurality of blocks with this LGP, and each this block has at least one incidence surface.Said surface of light source is for the incidence surface of said block.Thus, can reach best local dimming function.
The present invention provides a kind of display unit in addition, and it comprises backlight module, display floater, signal processor and a plurality of controller.This backlight module is one of them of aforesaid backlight module.This display floater is disposed on this backlight module relatively.This signal processor is in order to convert vision signal into control signal.Said controller is electrically connected at this signal processor and this backlight module and this display floater, in order to receive this control signal and to drive this backlight module and this display floater according to this control signal.
Description of drawings
Figure 1A shows the perspective exploded view of existing display unit;
Figure 1B shows the cross-sectional schematic of existing display unit;
Fig. 2 A shows the perspective exploded view of first embodiment of display unit of the present invention;
Fig. 2 B shows the first embodiment cross-sectional schematic of display unit of the present invention;
Fig. 3 shows the perspective exploded view of second embodiment of display unit of the present invention;
Fig. 4 A shows the perspective exploded view of the 3rd embodiment of display unit of the present invention;
Fig. 4 B shows the 3rd embodiment cross-sectional schematic of display unit of the present invention;
Fig. 5 shows the front-view schematic diagram that the LGP of the 4th embodiment of display unit of the present invention distributes;
Fig. 6 A shows the perspective exploded view of the 5th embodiment of display unit of the present invention;
Fig. 6 B shows the 5th embodiment cross-sectional schematic of display unit of the present invention.
The main element symbol description
1 existing display unit
First embodiment of 2 display unit of the present invention
The 3rd embodiment of 3 display unit of the present invention
The 4th embodiment of 4 display unit of the present invention
The 5th embodiment of 5 display unit of the present invention
10 backlight modules
11 backboards
12 reflector plates
13 LGPs
14 LED
15 diaphragms
16 display floaters
20 backlight modules
21 backboards
22A first catoptric arrangement
22B second catoptric arrangement
23A first LGP
23B second LGP
24A first light source
The 24B secondary light source
25 diaphragms
26 secondary light sources
The 27A first auxiliary catoptric arrangement
The 27B second auxiliary catoptric arrangement
28 first spaces
29 second spaces
30 backlight modules
31 backboards
32A first catoptric arrangement
32B second catoptric arrangement
32C the 3rd catoptric arrangement
32D the 4th catoptric arrangement
33A first LGP
33B second LGP
33C the 3rd LGP
33D the 4th LGP
34A first light source
The 34B secondary light source
34C the 3rd light source
34D the 4th light source
35 diaphragms
36 secondary light sources
The 37A first auxiliary catoptric arrangement
The 37B second auxiliary catoptric arrangement
37C the 3rd auxiliary catoptric arrangement
37D the 4th auxiliary catoptric arrangement
38 first spaces
39 second spaces
43 LGPs
44 light sources
50 backlight modules
51 backboards
52A first catoptric arrangement
52B second catoptric arrangement
53 LGPs
53A first block
53B second block
54A first light source
The 54B secondary light source
55 diaphragms
56 secondary light sources
58 spaces
59 grooves
231A first incidence surface
231B second incidence surface
232A first medial surface
232B second medial surface
251 display floaters
331A first incidence surface
331B second incidence surface
331C the 3rd incidence surface
332D the 4th incidence surface
332A first medial surface
332B second medial surface
332C the 3rd medial surface
331D the 4th medial surface
351 display floaters
531A first incidence surface
531B second incidence surface
551 display floaters
The specific embodiment
With reference to figure 2A, show the perspective exploded view of first embodiment of display unit of the present invention.With reference to figure 2B, show the first embodiment cross-sectional schematic of display unit of the present invention.This display unit 2 comprises backlight module 20, display floater 251, signal processor (not shown) and at least one controller (not shown).
Be that this backlight module 20 comprises backboard 21, at least one catoptric arrangement (the first catoptric arrangement 22A and the second catoptric arrangement 22B), at least one secondary light source 26, a plurality of LGP (the first LGP 23A and the second LGP 23B), a plurality of auxiliary catoptric arrangement (the first auxiliary catoptric arrangement 27A and the second auxiliary catoptric arrangement 27B), a plurality of light source (a plurality of first light source 24A and a plurality of secondary light source 24B) and at least one diaphragm 25 in what this stressed.This backboard 21 can be aluminium backboard or any backboard that material became that supports backlight module 20; It is the main framework of this backlight module 20, in order to hold said catoptric arrangement, this at least one secondary light source 26, said LGP, said auxiliary catoptric arrangement, said light source and this diaphragm 25.
In the present embodiment, this at least one catoptric arrangement is a plurality of catoptric arrangements, and it comprises the first catoptric arrangement 22A and the second catoptric arrangement 22B, and it is positioned on this backboard 21.This first catoptric arrangement 22A and this second catoptric arrangement 22B are apart and form first space 28.This secondary light source 26 is a plurality of LED, and it is positioned on this backboard 21, and is positioned at this first space 28.
Said LGP comprises the first LGP 23A and the second LGP 23B, its respectively correspondence be disposed at said catoptric arrangement top.That is this first LGP 23A is to should the first catoptric arrangement 22A, and this second LGP 23B is to should the second catoptric arrangement 22B.Preferably, the size of this first LGP 23A and this second LGP 23B's is measure-alike.This first LGP 23A has the first medial surface 232A and at least one first incidence surface 231A.This second LGP 23B has the second medial surface 232B and at least one second incidence surface 231B.Said LGP is apart and form at least one second space 29, and in the present embodiment, this first medial surface 232A forms this second space 29 in the face of this second medial surface 232B.The position in this first space 28 is corresponding to the position in this second space 29, and this first space 28 and this second space 29 are all linear.
Said auxiliary catoptric arrangement is positioned at said medial surface.In the present embodiment; Said auxiliary catoptric arrangement comprises the first auxiliary catoptric arrangement 27A and the second auxiliary catoptric arrangement 27B; And this first auxiliary catoptric arrangement 27A is positioned at this first medial surface 232A, and this second auxiliary catoptric arrangement 27B is positioned at this second medial surface 232B.In the present embodiment, said catoptric arrangement (this first catoptric arrangement 22A and this second catoptric arrangement 22B) and said auxiliary catoptric arrangement (this second auxiliary catoptric arrangement 27B of this first auxiliary catoptric arrangement 27A) are reflector plate or reflectance coating.Yet it is understandable that said catoptric arrangement and said auxiliary catoptric arrangement also can be micro-structurals.
Said surface of light source is for the incidence surface of said LGP.In the present embodiment; Said light source comprises a plurality of first light source 24A and a plurality of secondary light source 24B; The said first light source 24A is in the face of the first incidence surface 231A of this first LGP 23A, and said secondary light source 24B is in the face of the second incidence surface 231B of this second LGP 23B.In the present embodiment; Said light source (said first light source 24A and said secondary light source 24B) is LED; And the power output that the power output of this secondary light source 26 when opening opened less than said light source (said first light source 24A and said secondary light source 24B) is avoided crossing the bright bright band that causes because of secondary light source 26.
In addition, this diaphragm 25 (for example brightness enhancement film and diffusion barrier etc.) is disposed on the said LGP (this first LGP 23A and this second LGP 23B), and it is the diaphragm of whole piece, and contains this first LGP 23A and this second LGP 23B.This display floater 251 is disposed at the top of this diaphragm 25 of this backlight module 20 relatively.
This signal processor is in order to convert vision signal into control signal (comprise luminance signal and show signal).Said controller is electrically connected at said light source (said first light source 24A and said secondary light source 24B) and this secondary light source 26 of this signal processor, this display floater 251 and this backlight module 20; In order to receive this control signal (comprise luminance signal and show signal); And optionally control the GTG brightness of this secondary light source 26, said light source or the said light source of part, and show that according to this signal drives this display floater 251 according to this luminance signal.
In the present embodiment, because therefore this second space 29 that is separated by between this first LGP 23A and this second LGP 23B can reach preferred local dimming function.And more because the reflex of this first auxiliary catoptric arrangement 27A and this second auxiliary catoptric arrangement 27B; More can make this local dimming function reach best; That is for example, the light that the said first light source 24A is sent can not get into this second LGP 23B.In addition; May cause blanking bar when bright in that whole image is complete in order to remedy this second space 29, Cai this secondary light source 26 is only bright or just bright when the said first light source 24A and said secondary light source reach a preset intensity gray scale value when the said first light source 24A and said secondary light source 24B are all bright.
In the present embodiment, the said first light source 24A is positioned at the end face of this first LGP 23A and the periphery of two lateral surfaces, and said secondary light source 24B is positioned at the bottom surface of this second LGP 23B and the periphery of two lateral surfaces.Yet in other embodiments, the said first light source 24A only is positioned at the periphery of the end face of this first LGP 23A, and said secondary light source 24B only is positioned at the periphery of the bottom surface of this second LGP 23B, second embodiment as shown in Figure 3.
In the present embodiment; This at least one catoptric arrangement is a plurality of catoptric arrangements; Yet in other embodiments; This at least one catoptric arrangement also can be the catoptric arrangement (and not having this first space 28) of whole piece, and 26 of this secondary light sources are positioned on this catoptric arrangement, and the position of this secondary light source 26 is corresponding to the position in this second space 29.
With reference to figure 4A, show the perspective exploded view of the 3rd embodiment of display unit of the present invention.With reference to figure 4B, show the 3rd embodiment cross-sectional schematic of display unit of the present invention.This display unit 3 comprises backlight module 30, display floater 351, signal processor (not shown) and at least one controller (not shown).
What stress in this is that this backlight module 30 comprises backboard 31, at least one catoptric arrangement, at least one secondary light source 36, a plurality of LGP, a plurality of auxiliary catoptric arrangement, a plurality of light source and at least one diaphragm 35.This backboard 31 can be the aluminium backboard or other materials that can support this backlight module 30 are formed; It is the main framework of this backlight module 30, in order to hold said catoptric arrangement, this at least one secondary light source 36, said LGP, said auxiliary catoptric arrangement, said light source and this diaphragm 35.
In the present embodiment, this at least one catoptric arrangement is a plurality of catoptric arrangements, and it comprises the first catoptric arrangement 32A, the second catoptric arrangement 32B, the 3rd catoptric arrangement 32C and the 4th catoptric arrangement 32D, and it is positioned on this backboard 31.This first catoptric arrangement 32A, this second catoptric arrangement 32B, the 3rd catoptric arrangement 32C and the 4th catoptric arrangement 32D are apart and form first space 38.This first space 38 is a cross.This secondary light source 36 is a plurality of LED, and it is positioned on this backboard 31, and is positioned at this first space 38.
Said LGP comprises the first LGP 33A, the second LGP 33B, the 3rd LGP 33C and the 4th LGP 33D, its respectively correspondence be disposed at said catoptric arrangement top.That is this first LGP 33A is to should the first catoptric arrangement 32A, and this second LGP 33B is to should the second catoptric arrangement 32B, and the 3rd LGP 33C is to should the 3rd catoptric arrangement 32C, and the 4th LGP 33D is to should the 4th catoptric arrangement 32D.Preferably, the size of this first LGP 33A, this second LGP 33B, the 3rd LGP 33C and the 4th LGP 33D is all identical.
This first LGP 33A has two first medial surface 332A and at least one first incidence surface 331A.This second LGP 33B has two second medial surface 332B and at least one second incidence surface 331B.The 3rd LGP 33C has two the 3rd medial surface 332C and at least one the 3rd incidence surface 331C.The 4th LGP 33D has two the 4th medial surface 331D and at least one the 4th incidence surface 332D.Said LGP is apart and form at least one second space 39.This second space 39 is a cross.In the present embodiment, the said first medial surface 332A, the said second medial surface 332B, said the 3rd medial surface 332C and said the 4th medial surface 331D face with each other and form this second space 39.The position in this first space 38 is corresponding to the position in this second space 39.
Said auxiliary catoptric arrangement comprises the first auxiliary catoptric arrangement 37A, the second auxiliary catoptric arrangement 37B, the 3rd auxiliary catoptric arrangement 37C and the 4th auxiliary catoptric arrangement 37D.This first auxiliary catoptric arrangement 37A is positioned at the said first medial surface 332A; This second auxiliary catoptric arrangement 37B is positioned at the said second medial surface 332B; The 3rd auxiliary catoptric arrangement 37C is positioned at said the 3rd medial surface 332C, and the 4th auxiliary catoptric arrangement 37D is positioned at said the 4th medial surface 331D.In the present embodiment, said catoptric arrangement and said auxiliary catoptric arrangement are reflector plate or reflectance coating.Yet it is understandable that said catoptric arrangement and said auxiliary catoptric arrangement also can be micro-structurals.
Said light source comprises a plurality of first light source 34A, a plurality of secondary light source 34B, a plurality of the 3rd light source 34C and a plurality of the 4th light source 34D.The said first light source 34A is in the face of the first incidence surface 331A of this first LGP 33A; Said secondary light source 34B is in the face of the second incidence surface 331B of this second LGP 33B; Said the 3rd light source 34C is in the face of the 3rd incidence surface 331C of the 3rd LGP 33C, and said the 4th light source 34D is in the face of the 4th incidence surface 332D of the 4th LGP 33D.In the present embodiment, said light source is LED, and the output of the power output of this secondary light source 36 when opening when opening less than said light source, avoids crossing the bright bright band that causes because of secondary light source 36.
This diaphragm 35 (for example brightness enhancement film and diffusion barrier etc.) is disposed on the said LGP, and it is the diaphragm of whole piece, and contains said LGP.This display floater 351 is disposed at the top of this diaphragm 35 of this backlight module 30 relatively.
This signal processor is in order to convert vision signal into control signal (comprise luminance signal and show signal).Said controller is electrically connected at said light source (the said first light source 34A, said secondary light source 34B, said the 3rd light source 34C and said the 4th light source 34D) and this secondary light source 26 of this signal processor, this display floater 351 and this backlight module 30; In order to receive this control signal (comprise luminance signal and show signal); And optionally control the GTG brightness of this secondary light source 36, said light source or the said light source of part, and show that according to this signal drives this display floater 351 according to this luminance signal.
In the present embodiment, because therefore this second space 39 that is separated by between this first LGP 33A, this second LGP 33B, the 3rd LGP 33C and the 4th LGP 33D can reach preferred local dimming function.And more because the reflex of said auxiliary catoptric arrangement can make this local dimming function reach best, that is for example, the light that the said first light source 34A is sent only can be within this first LGP 33A, and can not get into other LGPs fully.In addition; In the present embodiment; The control mode of this secondary light source does, this secondary light source that is positioned at adjacent formed this first space of this catoptric arrangement of two adjacent these LGPs pairing two in the face of the said light source of the incidence surface of this two adjacent LGP just bright or just bright when the said light source of the incidence surface of this two adjacent LGP reaches a preset intensity gray scale value when all bright.For example, when the said first light source 34A and said the 3rd light source 34C were all bright, the secondary light source 36 that is positioned between this first LGP 33A and the 3rd LGP 33C just can be bright.Or when the said first light source 34A and said the 3rd light source 34C brightness reached a preset value, the secondary light source 36 that is positioned between this first LGP 33A and the 3rd LGP 33C just can be bright.
In the present embodiment; The said first light source 34A is positioned at the end face of this first LGP 33A and the periphery of lateral surface; Said secondary light source 34B is positioned at the end face of this second LGP 33B and the periphery of lateral surface; Said the 3rd light source 34C is positioned at the bottom surface of the 3rd LGP 33C and the periphery of lateral surface, and said the 4th light source 34D is positioned at the bottom surface of the 4th LGP 33D and the periphery of lateral surface.Yet in other embodiments; The said first light source 34A only is positioned at the periphery of the end face of this first LGP 33A; Said secondary light source 34B only is positioned at the periphery of the end face of this second LGP 33B; Said the 3rd light source 34C only is positioned at the periphery of the bottom surface of the 3rd LGP 33C, and said the 4th light source 34D only is positioned at the periphery of the bottom surface of the 4th LGP 33D.
In the present embodiment; This at least one catoptric arrangement is a plurality of catoptric arrangements; Yet in other embodiments; This at least one catoptric arrangement also can be the catoptric arrangement (and not having this first space 38) of whole piece, and 36 of this secondary light sources are positioned on this catoptric arrangement, and the position of this secondary light source 36 is corresponding to the position in this second space 39.
With reference to figure 5, the front-view schematic diagram that the LGP of the 4th embodiment of demonstration display unit of the present invention distributes.In the present invention, the number of said LGP can be n, and the number of said catoptric arrangement also is n relatively; Be preferably 2n, the number of said catoptric arrangement also is 2n, and wherein n is integer (n=1; 2; 3...), said LGP is arranged in 2 * n matrix, and said catoptric arrangement also is arranged in 2 * n matrix.In above-mentioned first embodiment (Fig. 2 A), said LGP and said catoptric arrangement are arranged in one 2 * 1 matrix respectively.In above-mentioned the 3rd embodiment (Fig. 4 A), said LGP and said catoptric arrangement are arranged in one 2 * 2 matrix respectively.In the display unit 4 of present embodiment, said LGP 43 and said catoptric arrangement (not shown) are arranged in one 2 * 3 matrix respectively, and said light source 44 lays respectively at the end face of said LGP 43 or the periphery of bottom surface.The rest may be inferred, and in other embodiments, said LGP and said catoptric arrangement can be arranged in one 2 * 4 matrix, 2 * 5 matrixes or 2 * 6 matrixes or other 2 * n matrixes respectively.
With reference to figure 6A, show the perspective exploded view of the 5th embodiment of display unit of the present invention.With reference to figure 6B, show the 5th embodiment cross-sectional schematic of display unit of the present invention.This display unit 5 comprises backlight module 50, display floater 551, signal processor (not shown) and at least one controller (not shown).
What stress in this is that this backlight module 50 comprises backboard 51, at least one catoptric arrangement (the first catoptric arrangement 52A and the second catoptric arrangement 52B), at least one secondary light source 56, LGP 53, a plurality of light source (a plurality of first light source 54A and a plurality of secondary light source 54B) and at least one diaphragm 55.This backboard 51 can be aluminium backboard or any backboard that material became that supports backlight module 50; It is the main framework of this backlight module 50, in order to hold said catoptric arrangement, this at least one secondary light source 56, this LGP 53, said light source and this diaphragm 55.
In the present embodiment, this at least one catoptric arrangement is a plurality of catoptric arrangements, and it comprises the first catoptric arrangement 52A and the second catoptric arrangement 52B, and it is positioned on this backboard 51.This first catoptric arrangement 52A and this second catoptric arrangement 52B are apart and form space 58.In the present embodiment, said catoptric arrangement is reflector plate or reflectance coating.Yet it is understandable that said catoptric arrangement also can be a micro-structural.This secondary light source 56 is a plurality of LED, and it is positioned on this backboard 51, and is positioned at this space 58.
This LGP 53 is the LGP of whole piece, and it is positioned at said catoptric arrangement top.This LGP 53 has the exiting surface surface of lower left (among Fig. 6 A towards); This exiting surface has at least one groove 59; This at least one groove 59 is divided into a plurality of blocks (the for example first block 53A and the second block 53B) with this LGP 53, and said block respectively correspondence be disposed at said catoptric arrangement top.That is this first block 53A is to should the first catoptric arrangement 52A, and this second block 53B is to should the second catoptric arrangement 52B.Preferably, the size of this first block 53A and this second block 53B's is measure-alike.Each this block has at least one incidence surface, that is this first block 53A has at least one first incidence surface 531A, and this second block 53B has at least one second incidence surface 531B.
The position of this at least one groove 59 is to position that should space 58.In the present embodiment, this space 58 and this at least one groove 59 are all linear, and the number of this groove can be many.Preferably, the degree of depth of this groove 59 half the greater than the thickness of this LGP 53.
Said surface of light source is for the incidence surface of said block.In the present embodiment, said light source comprises a plurality of first light source 54A and a plurality of secondary light source 54B, and the said first light source 54A is in the face of the first incidence surface 531A of this first block 53A, and said secondary light source 54B is in the face of the second incidence surface 531B of this second block 53B.In the present embodiment; Said light source (said first light source 54A and said secondary light source 54B) is LED; And the power output the when power output that this secondary light source 56 is opened is opened less than said light source (said first light source 54A and said secondary light source 54B) is avoided crossing the bright bright band that causes because of secondary light source 56.
This diaphragm 55 (for example brightness enhancement film and diffusion barrier etc.) is disposed on this LGP 53.This display floater 551 is disposed at the top of this diaphragm 55 of this backlight module 50 relatively.
This signal processor is in order to convert vision signal into control signal (comprise luminance signal and show signal).Said controller is electrically connected at said light source (said first light source 54A and said secondary light source 54B) and this secondary light source 56 of this signal processor, this display floater 551 and this backlight module 50; In order to receive this control signal (comprise luminance signal and show signal); And optionally control the GTG brightness of this secondary light source 56, said light source or the said light source of part, and show that according to this signal drives this display floater 551 according to this luminance signal.
In the present embodiment, because this first block 53A and this second block 53B are separated by this at least one groove 59, therefore can reach preferred local dimming function.In addition; May be in order to remedy this at least one groove 59 at the full blanking bar that causes when bright of whole image; This secondary light source 56 is only just bright when the said first light source 54A and said secondary light source 54B are all bright, or just bright when the said light source of the incidence surface of this two adjacent block reaches a preset intensity gray scale value.
In the present embodiment, the said first light source 54A is positioned at the end face of this first block 53A and the periphery of two lateral surfaces, and said secondary light source 54B is positioned at the bottom surface of this second block 53B and the periphery of two lateral surfaces.Yet in other embodiments, the said first light source 54A only is positioned at the periphery of the end face of this first block 53A, and said secondary light source 54B only is positioned at the periphery of the bottom surface of this second block 53B.
In the present embodiment; This at least one catoptric arrangement is a plurality of catoptric arrangements; Yet in other embodiments; This at least one catoptric arrangement also can be the catoptric arrangement (and not having this space 58) of whole piece, and 56 of this secondary light sources are positioned on this catoptric arrangement, and the position of this secondary light source 56 is corresponding to the position in this second space 59.
In the present invention, the number of said block can be n, and said catoptric arrangement is to correspond to n; Preferred number of blocks is 2n, and the number of said catoptric arrangement also is 2n, and wherein n is integer (n=1; 2; 3...), said block is arranged in 2 * n matrix, and said catoptric arrangement also is arranged in 2 * n matrix.In above-mentioned the 5th embodiment (Fig. 6 A), said block and said catoptric arrangement are arranged in one 2 * 1 matrix respectively.The rest may be inferred, and in other embodiments, said block and said catoptric arrangement can be arranged in one 2 * 2 matrix respectively, that is said catoptric arrangement comprises first catoptric arrangement, second catoptric arrangement, the 3rd catoptric arrangement and the 4th catoptric arrangement.This first catoptric arrangement, this second catoptric arrangement, the 3rd catoptric arrangement and the 3rd catoptric arrangement are apart and form this space, and this space is a cross.Said block comprises first block, second block, the 3rd block and the 4th block.This first block is positioned at this first catoptric arrangement top and has at least one first incidence surface; This second block is positioned at this second catoptric arrangement top and has at least one second incidence surface; The 3rd block is positioned at the 3rd catoptric arrangement top and has at least one the 3rd incidence surface, and the 4th block is positioned at the 4th catoptric arrangement top and has at least one the 4th incidence surface.Between this first block, this second block, the 3rd block and the 4th block is this groove, and this groove is a cross, and the position in this space is to position that should groove.Said light source comprises a plurality of first light sources, a plurality of secondary light source, a plurality of the 3rd light source and a plurality of the 4th light source.Said first surface of light source is at least one first incidence surface of this first block; Said secondary light source regards at least one second incidence surface of this second block; Said the 3rd surface of light source is at least one the 3rd incidence surface of the 3rd block, and said the 4th surface of light source is at least one the 4th incidence surface of the 4th block.
In addition, said block and said catoptric arrangement can be arranged in one 2 * 3 matrix, 2 * 4 matrixes, 2 * 5 matrixes or 2 * 6 matrixes or other 2 * n matrixes respectively.
Can be guessed and known by the above embodiments, (like said first light source 24A and the said secondary light source 24B of 2A figure) is configurable in arbitrary incidence surface of those LGPs for those light sources, or wantonly two incidence surfaces that face mutually or wantonly two relative incidence surfaces.
What deserves to be mentioned is; The foregoing description and graphic described those light sources, secondary light source are merely explanation signal, can guess and know those light sources or secondary light source to can be light emitting diode (LED), striation (LED Light bar) or cold cathode ray tube (CCFL) or its combination and reach effect of the present invention.
The foregoing description is merely explanation principle of the present invention and effect thereof, and unrestricted the present invention, so those skilled in the art make amendment to the foregoing description and change and still do not take off spirit of the present invention.Interest field of the present invention should be listed like claims.
Claims (15)
1. backlight module comprises:
One backboard;
At least one catoptric arrangement is positioned on this backboard;
A plurality of LGPs are disposed at this at least one catoptric arrangement top, and each this LGP has at least one medial surface and at least one incidence surface, and these a plurality of LGPs are apart and form at least one second space;
A plurality of auxiliary catoptric arrangements are positioned at this at least one medial surface; And
A plurality of light sources regard to the incidence surface of this LGP.
2. backlight module as claimed in claim 1; Wherein this at least one catoptric arrangement is a plurality of catoptric arrangements, and these a plurality of catoptric arrangements are apart and form at least one first space, and this backlight module also comprises at least one secondary light source; Be positioned on this backboard; And be positioned at this first space, wherein the position in this first space is corresponding to the position in this second space, and these a plurality of medial surfaces against each other.
3. backlight module as claimed in claim 2, wherein the power output of this secondary light source is less than the power output of said light source.
4. backlight module as claimed in claim 1; This at least one catoptric arrangement catoptric arrangement that is whole piece wherein; This backlight module also comprises at least one secondary light source; Be positioned on this catoptric arrangement, wherein the position of this secondary light source is corresponding to the position in this second space, and these a plurality of medial surfaces against each other.
5. backlight module as claimed in claim 4, wherein the power output of this secondary light source is less than the power output of these a plurality of light sources.
6. backlight module as claimed in claim 1, wherein this at least one catoptric arrangement and these a plurality of auxiliary catoptric arrangements are reflector plate.
7. backlight module comprises:
One backboard;
At least one catoptric arrangement is positioned on this backboard;
One LGP is positioned at this at least one catoptric arrangement top, and this LGP has exiting surface, and this exiting surface has at least one groove, and this at least one groove is divided into a plurality of blocks with this LGP, and each this block has at least one incidence surface; And
A plurality of light sources regard to the incidence surface of these a plurality of blocks.
8. backlight module as claimed in claim 7; Wherein this at least one catoptric arrangement is a plurality of catoptric arrangements, and these a plurality of catoptric arrangements are apart and form at least one space, and this backlight module also comprises at least one secondary light source; Be positioned on this backboard; And be positioned at this space, wherein the position of this groove is to position that should the space, and these a plurality of blocks respectively correspondence be disposed at this a plurality of catoptric arrangements top.
9. backlight module as claimed in claim 8, wherein the power output of this secondary light source is less than the power output of these a plurality of light sources.
10. backlight module as claimed in claim 7, this at least one catoptric arrangement catoptric arrangement that is whole piece wherein, this backlight module also comprises at least one secondary light source, is positioned on this catoptric arrangement, wherein the position of this secondary light source is corresponding to the position of this groove.
11. like the backlight module of claim 10, wherein the power output of this secondary light source is less than the power output of these a plurality of light sources.
12. backlight module as claimed in claim 7, wherein this at least one catoptric arrangement is a reflector plate.
13. backlight module as claimed in claim 7, the wherein degree of depth of this groove half the greater than the thickness of this LGP.
14. a display unit comprises:
Backlight module as claimed in claim 1;
One display floater, it is disposed on this backlight module relatively;
One signal processor is in order to be changed to control signal with the vision signal dress; And
A plurality of controllers are electrically connected at this signal processor and this backlight module and this display floater, in order to receive this control signal and to drive this backlight module and this display floater according to this control signal.
15. a display unit comprises:
Backlight module as claimed in claim 7;
One display floater, it is disposed on this backlight module relatively;
One signal processor is in order to convert vision signal into control signal; And
At least one controller is electrically connected at this signal processor and this backlight module and this display floater, in order to receive this control signal and to drive this backlight module and this display floater according to this control signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102382676A CN102338305B (en) | 2010-07-26 | 2010-07-26 | Backlight module and display device comprising same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102382676A CN102338305B (en) | 2010-07-26 | 2010-07-26 | Backlight module and display device comprising same |
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| CN102338305A true CN102338305A (en) | 2012-02-01 |
| CN102338305B CN102338305B (en) | 2013-11-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010102382676A Expired - Fee Related CN102338305B (en) | 2010-07-26 | 2010-07-26 | Backlight module and display device comprising same |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112397032A (en) * | 2019-08-19 | 2021-02-23 | Tcl集团股份有限公司 | Dynamic backlight driving module, method and display driving module |
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| JP2004079418A (en) * | 2002-08-21 | 2004-03-11 | Matsushita Electric Ind Co Ltd | Light guide plate, and backlight device using the same |
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| CN102338305B (en) | 2013-11-20 |
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