TW201202794A - Backlight module and display device containing the backlight module - Google Patents

Abstract

The present invention relates to a backlight module and display device containing the backlight module. 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. At least one reflection structure is located on the back plate. The light guide plates are disposed on the top of at least one reflection structure, and each light guide plate has at least one inner side face and at least one light incoming face. The light guide plates are separated from each other to form at least a second gap. The auxiliary reflection structures are located on the inner side face. The light sources face the light incoming face of the light guide plates. As such, it achieves the best local dimming function.

Description

201202794 VI. Description of the Invention: [Technical Field] The present invention relates to a backlight module and a display device including the same, and particularly to a backlight module capable of local dimming and a backlight module including the same Display device. [Prior Art] A perspective exploded view of a conventional display device is shown with reference to Fig. 1A'. Referring to Fig. 1B', a schematic cross-sectional view of a conventional display device is shown. The display device 1 includes an optical module 10, a display panel 16, a signal processor (not shown), and a plurality of controllers (not shown). The backlight module includes a backing plate 11, a reflective sheet 12, a light guide plate 13, a plurality of LEDs 14, and at least one film 15. The #1111 is an aluminum backing plate, which is the main frame of the backlight module, for accommodating the reflective sheet 12, the light guide plate 13, the first and second films, and the film 15. The reflection sheets 12 are attached to the back sheet by attachment, which is a whole sheet of reflection sheets. The light guide plate 13 is disposed above the reflection sheet 12 and has at least one light incident surface (peripheral surface). The LEDs 14 are attached to the light guide plate 13 with respect to the light incident surface of the light guide plate 13. The diaphragm 15 is disposed on the light guide plate 13 . The display panel 16 is disposed above the diaphragm 15 of the backlight module 1 . The signal processor is configured to convert a video signal into a control signal (including a brightness signal and a display signal. The controller is electrically connected to the signal processor, the display panel 16 and the backlight module 1〇iLED14, The driving signal (including the brightness signal and the display signal) is received, and the LEDI4 of the backlight module is driven according to the brightness signal, and the display panel is driven according to the display signal. i S] 149527.doc 201202794 16 The display device 1丨 丨 等 等 控制器 控制器 控制器 控制器 控制器 控制器 控制器 控制器 控制器 控制器 控制器 控制器 控制器 控制器 控制器 控制器 控制器 』 』 』 』 』 』 』 』 』 』 』 』 』 』 』 』 』 』 』 』 』 』 』 』 』 』 』 』 』 』 The darker 'uses the controller to control the light located on the upper right periphery of the light guide plate 13 to be bright, and the other _4 to be dark. Similarly, the above method can also be used; the light plate U has other specific-small areas of light and dark The local dimming function is achieved, thereby reducing the waste of energy. The disadvantage of the "page" device 1 is that its local dimming function is not good. In the above example, when located on the light guide plate 13 LED14 on the top right side The light emitted by the LEDs 14 is advanced to the lower side of the light guide plate, so that the lower half of the light guide plate 13 cannot be made dark. There is another prior art system using the control display panel. The pixel inside uses the electric or current to control the rotation angle of the liquid crystal to determine the angle of opening, and the small to achieve the purpose of local dimming. However, because the pixel has light leakage, the above method uses the adjustment pixel as a means of local dimming. Poor' and because the backlight module must be in a normally open state, it is not in line with the trend of energy saving. Therefore, it is necessary to provide an innovative and progressive time module and a display device including the same to solve the above problems. The present invention provides a backlight module including a backplane, at least one reflective structure, a plurality of light guides, a plurality of auxiliary reflective structures, and a plurality of light sources. The at least-reflective structure is located on the backplane. The light guide plates are disposed above the at least one reflective structure, and each of the light guide plates has at least one inner side s. 149527.doc 201202794 and at least a light incident surface, the light guides Forming at least one second gap apart from each other. The auxiliary reflective structures are located on the inner side surfaces. The light source planes are in the light incident surface of the light guide plates, thereby achieving optimal local 'dimming The present invention further provides a backlight module, comprising: a back plate, at least a reflective structure, a light guide plate, and a plurality of light sources. The at least one reflective structure is located on the back plate. The light guide plate is located at the at least one Above the reflective structure, the light guide plate has a light-emitting surface, the light-emitting surface has at least one groove, the at least one groove divides the light guide plate into a plurality of blocks, and each of the blocks has at least one light-incident surface. The light source surface is in the light entrance surface of the blocks, thereby achieving the best local dimming function. The invention further provides a display device comprising a backlight module, a display panel, a signal processor and a plurality of controllers. The backlight module is one of the backlight modules as described above. The display panel is oppositely disposed on the backlight module. The signal processor is configured to convert a video signal into a control signal. The controller is electrically connected to the signal processor, the backlight module and the display panel for receiving the control signal and driving the backlight module and the display panel according to the control signal. [Embodiment] A schematic diagram of a stereoscopic decomposition of a first embodiment of a display device of the present invention is shown with reference to Fig. 2A'. Referring to Fig. 2B, there is shown a cross-sectional view showing a first embodiment of the display device of the present invention. The display device 2 includes a backlight module 20, a display panel 251, a signal processor (not shown), and a plurality of controllers (not shown).

I'SI 149527.doc 201202794 It is emphasized that the backlight module 20 includes a back plate 21, at least one reflective structure (a first reflective structure 22A and a second reflective structure 22B), at least an auxiliary light source 26, a plurality of light guide plates (a first light guide plate 23a and a second light guide plate 23B), a plurality of auxiliary reflection structures (a first auxiliary reflection structure 27 and a second auxiliary reflection structure 27B), and a plurality of light sources (plural a first light source 24A and a plurality of second light sources 24B) and at least one diaphragm 25. The backplane 21 can be a backplane or any backplane that can support the backlight module 2, which is the main frame of the backlight module 20 for accommodating the reflective structures, the at least one auxiliary The light source 26, the light guide plates 'the auxiliary reflection structures, the light sources and the diaphragm 25. In the present embodiment, the at least one reflective structure is a plurality of reflective structures. The first reflective structure 22A and the second reflective structure 22B are disposed on the back plate 21. The first reflective structure 22A and the second reflective structure 22B are spaced apart from each other to form a first gap 28. The auxiliary light source % is a plurality of LEDs located on the back plate 21 and located in the first gap 28. The light guide plates include a first light guide plate 23A and a second light guide plate 23B' respectively disposed above the reflective structures. That is, the first light guide plate 23 A corresponds to the first reflective structure 22A, and the second light guide plate 23B corresponds to the second reflective structure 22B. Preferably, the size of the first light guide plate 23a is the same as the size of the second light guide plate 23B. The first light guide plate 23A has a first inner side surface 232A and at least one first light incident surface 23 1 Α β. The second light guide plate 23 Β has a second inner side surface 23 2 Β and at least a second light incident surface 231 。. The light guide plates are spaced apart from each other to form at least one second gap 29, and in the embodiment, the first inner side surface 232A faces the second inner side surface 232B to form the second gap 29. The position of the first gap 28 corresponds to the position of the second gap 29, and the first gap 28 and the second gap 29 are all in a straight line shape. The auxiliary reflective structures are located on the inner sides. In this embodiment, the auxiliary reflective structures include a first auxiliary reflective structure 27A and a second auxiliary reflective structure 27B, and the first auxiliary reflective structure 27 A is located on the first inner side 232A, and the second auxiliary reflection Structure 27B is located on the second inner side 232B. In the present embodiment, the reflective structures (the first reflective structure 22A and the second reflective structure 22B) and the auxiliary reflective structures (the first auxiliary reflective structure 27A and the second auxiliary reflective structure 27B) are reflected Sheet or reflective film. It will be understood, however, that the reflective structures and the auxiliary reflective structures may also be microstructures. The light source faces are incident on the light incident surface of the light guide plates. In this embodiment, the light sources include a plurality of first light sources 24A and a plurality of second light sources 24B, and the first light sources 24A face the first light incident surface 23 1A of the first light guide plate 23a. The first light source 24B faces the first light incident surface 23 1B of the second light guide plate 23 B. In this embodiment, the light sources (the first light sources 24A and the second light sources 24B) are led, and the output power of the auxiliary light source is less than the light sources (the first ones) The output power of the light source Μ a and the second light source 24B) is turned on to avoid a bright band caused by the auxiliary light source % being too bright. Further, the film 25 (for example, a brightness enhancement film, a diffusion film, etc.) is disposed on the "plates (the light guide plate 23 and the second light guide plate 2)

iSI I49527.doc 201202794 A full sheet of film covering the first light guide plate 23 A and the second light guide plate 23B. The display panel 251 is disposed above the diaphragm 25 of the backlight module 20 . The signal processor is configured to convert a video signal into a control signal (including a brightness signal and a display signal). The controllers are electrically connected to the signal processor, the display panel 251, and the backlight module 20. The light source (the first light source 24A and the second light source 24B) and the auxiliary light source 26 are configured to receive the control signal (including the brightness signal and the display signal), and selectively control the auxiliary light source according to the brightness signal 26 'the gray level brightness of the light sources or some of the light sources' and driving the display panel 25 according to the display signal. In the embodiment, the first light guide plate 23 and the second light guide plate 23B are separated from each other. The second gap 29 thus achieves a preferred local dimming function. Moreover, due to the reflection of the first auxiliary reflective structure 27 and the second auxiliary reflective structure 27B, the local dimming function can be optimized, that is, for example, the first light source 24A emits The light does not enter the second light guide plate 23B. In addition, in order to compensate for the second gap 29, the moon b may cause a dark band when the whole frame is full. The auxiliary light source 26 is only bright when the first light source 24A and the second light source 24B are both bright. The equal light source 24A and the second light sources are illuminated when a preset brightness gray level value is reached. In this embodiment, the first light sources 24A are located on the outer surface of the top surface and the outer surface of the first light guide plate 23A, and the second light sources 24b are located on the bottom surface and the outer surface of the second light guide plate 23B. The periphery of the side. However, in the embodiment of the present invention, the light source 24A is located only on the periphery of the top surface of the first light guide plate 23A and the second light sources 24B are located only on the bottom surface of the second light guide plate 23B. On the periphery, a second embodiment as shown in FIG. In this embodiment, the at least one reflective structure is a plurality of reflective structures. However, in other embodiments, the at least one reflective structure may also be a whole reflective structure (without the first gap 28). The auxiliary light source % is located on the reflective structure, and the position of the auxiliary light source 26 corresponds to the position of the second gap 29. Referring to Fig. 4A, there is shown a perspective exploded view of a third embodiment of the display device of the present invention. Referring to Fig. 4B, there is shown a cross-sectional view showing a third embodiment of the display device of the present invention. The display device 3 includes a backlight module 3A, a display panel 351, a signal processor (not shown), and a plurality of controllers (not shown). It is emphasized that the backlight module 30 includes a back plate 31, at least one reflective structure, at least one auxiliary light source 36, a plurality of light guide plates, a plurality of auxiliary reflective structures, a plurality of light sources, and at least one film 35. The backplane 3 1 may be an aluminum backplane or other material capable of supporting the backlight module 30, and is a main frame of the backlight module 30 for accommodating the reflective structures, the at least one auxiliary light source 36, The light guide plates, the auxiliary reflective structures, the light sources, and the diaphragms 35. In this embodiment, the at least one reflective structure is a plurality of reflective structures, including a first reflective structure 32A, a second reflective structure 32B, a third reflective structure 32C, and a fourth reflective structure 32D. Located on the back plate 31. The first reflective structure 32A, the second reflective structure 32B, 149527.doc • 9-201202794, the third reflective structure 32C and the fourth reflective structure 32D are spaced apart from each other to form a first gap 38. The first gap 38 is in the shape of a cross. The auxiliary light source 36 is a plurality of LEDs located on the back plate 31 and located in the first gap 38.

The light guide plate includes a first light guide plate 33A, a second light guide plate 33B, a third light guide plate 33C and a fourth light guide plate 33D, which are respectively disposed above the reflective structures. That is, the first light guide plate 33 A corresponds to the first reflective structure 32A 'the second light guide plate 33B corresponds to the second reflective structure 32B'. The third light guide plate 33C corresponds to the third reflective structure 32C, the fourth light guide plate 33D corresponds to the fourth reflective structure 32d. Preferably, the dimensions of the first light guide plate 33A, the second light guide plate 33B, the third light guide plate 33C and the fourth light guide plate 33D are the same. The first light guide plate 33A has two first inner side surfaces 332a and at least one first light incident surface 331A. The second light guide plate 33B has two second inner side surfaces 332B and at least one second light incident surface 331B. The third light guide plate 33C has two second inner side surfaces 332C and at least one third light incident surface 33 1C. The fourth light guide plate 33D has two fourth inner side surfaces 33 1D and at least one fourth light incident surface 332D. The specific light guide plates are spaced apart from each other to form at least one second gap 39. The first gap 39 is a cross. In this embodiment, the first inner side surface 3/2A, the second inner side surface 332B, the third inner side surface 332c, and the fourth inner side surface 3 3 1 D face each other to form the first Two voids 3 9 . The position of the first gap 38 corresponds to the position of the second gap 39. The auxiliary reflective structures include a first auxiliary reflection structure, a second auxiliary reflection structure 37B, a third auxiliary reflection structure 37 and a fourth

[SI 149527.doc 201202794 Auxiliary Reflective Structure 37D. The first auxiliary reflective structure 37A is located on the first inner side surface 332A, the second auxiliary reflective structure 37]3 is located on the second inner side surface 332B, and the third auxiliary reflective structure wc is located on the third inner side surface 332C. The fourth auxiliary reflective structure is located on the fourth inner side surface 331D. In this embodiment, the reflective structures and the auxiliary reflective structures are reflective sheets or reflective films. However, it will be understood that the reflective structures and the auxiliary reflective structures may also be microstructures. The light sources include a plurality of first light sources 34A, a plurality of second light sources 34B', a plurality of third light sources 34C, and a plurality of fourth light sources 34]. The first light source 34A faces the first light incident surface 33A of the first light guide plate 33A, and the second light source 34B faces the second light incident surface 331B of the second light guide plate 33B. The third light source 34C faces the third light incident surface 331C of the third light guide plate 33, and the fourth light source 34D faces the fourth human light surface 332D of the fourth light guide plate 33d. In this embodiment, the light sources are (4), and the output power when the auxiliary light source 36 is turned on is smaller than the output when the light sources are turned on to avoid bright bands caused by the auxiliary light source 36 being too bright. The diaphragm 35 (e.g., a brightness enhancement film, a diffusion film, etc.) is disposed on the light guide plate, which is a film of the entire sheet, and covers the light guide plates. The display panel 351 is disposed above the cymbal 35 of the backlight module 30. The signal processor is configured to convert a video signal into a control signal (including a brightness signal and a display signal p). The controller is electrically connected to the signal processor, the display panel 351 and the backlight module 3 The equal light source (the first light source 34A, the second light source 34B, the third light source 3 and the fourth light source 34D) and the auxiliary light source 26 are configured to receive the control signal 149527.doc rsi 201202794 (including The brightness signal and the display signal are selectively controlled according to the brightness signal, and the gray level brightness of the light source or some of the light sources is controlled, and the display panel 351 is driven according to the display signal. The position of the first light guide plate 33A, the second light guide plate 33B, the second light guide plate 33c and the fourth light guide plate are separated by the second gap 39', so that a better local dimming function can be achieved. Due to the reflection of the auxiliary reflective structures, the local dimming function can be optimized, that is, the light emitted by the first light source 34A is only within the first light guide plate 33, and Not going at all In another embodiment, the auxiliary light source is controlled in such a manner that the auxiliary light source is located in the first gap formed by two adjacent reflective structures corresponding to the two adjacent light guide plates. When the light sources of the light incident surfaces of the two adjacent light guide plates are all bright, or the light sources of the light incident surfaces of the two adjacent light guide plates are at a preset brightness gray scale value, For example, when the first light source 34Α and the third light source 34c are both bright, the auxiliary light source 36 located between the first light guide plate 33Α and the third light guide plate 33c will “when” When the brightness of the first light source 34 and the third light source 34C reaches a predetermined value, the auxiliary light source 36 between the first light guide plate 33 and the third light guide plate 33 is bright. In the example, the first light source 34 is located at the periphery of the top surface and the outer surface of the first light guide plate 33, and the second light source 34β is located at the periphery of the top surface and the outer surface of the first light guide plate 33. The third light source 34C is located on the periphery of the bottom surface and the outer side surface of the second light guide plate 33c. Four source lines located 3 4 D 3 3 D fourth bottom surface of the light guide plate and the outer side surface

[SI 149527.doc 201202794

The first light sources 34A are located only in the vicinity of the second light sources 34B only the periphery of the third light sources 34C. In other embodiments, the periphery of the top surface of the first light guide plate 33A is located on the bottom surface of the third light guide plate 33D outside the top surface of the second light guide plate 33B. The periphery. In the present embodiment, the reflective structure is a plurality of reflective structures, but in other embodiments, the at least one reflective structure may also be a

The entire reflective structure (without the first void 38) is located on the reflective structure and the position of the auxiliary source 36 corresponds to the location of the second void 39. Referring to Fig. 5, there is shown a front view showing the distribution of the light guide plate of the fourth embodiment of the display device of the present invention. In the present invention, the number of the light guide plates may be n, the number of the reflective structures is also n, and the number of the reflective structures is 2n, and the number of the reflective structures is also 2n, wherein the η is Integer (η 1, 2, 3...), the light guide plates are arranged in a 2Χn matrix, and the reflective structures are also arranged in a 2xn matrix. In the first embodiment described above (Fig. 2A), the light guide plates and the reflective structures are respectively arranged in a matrix. In the above third embodiment (Fig. 4A), the light guide plates and the reflective structures are respectively arranged in a matrix of 2 χ 2 . In the display device 4 of the embodiment, the light guide plates 43 and the special reflection structure (not shown) are respectively arranged in a 2×3 matrix, and the light sources 44 are respectively located on the top or bottom surface of the light guide plates 43. The periphery. And so on. In other embodiments, the light guides and the reflective structures may be arranged in a 2 X 4 matrix, a 2 X 5 matrix or a 2x6 matrix or other 2 χ n matrix, respectively.

ί SI 149527.doc _ 201202794 Referring to Figure 6A, a perspective exploded view of a fifth embodiment of the display device of the present invention is shown. Referring to Fig. 6B, there is shown a cross-sectional view showing a fifth embodiment of the display device of the present invention. The display device 5 includes a backlight module 5A, a display panel 551, a signal processor (not shown), and a plurality of controllers (not shown). It is emphasized that the backlight module 5 includes a back plate 5 , at least one reflective structure (a first reflective structure 52A and a second reflective structure 52B ), at least one auxiliary light source 56 , and a light guide plate 53 . a plurality of light sources (a plurality of first light sources 54A and a plurality of second light sources Η) and at least one film 55. The back plate 51 can be an aluminum back plate or any back plate made of a material capable of supporting the backlight module 5〇 The main frame of the backlight module 50 is for accommodating the reflective structures, the at least one auxiliary light source 56, the light guide plate 53, the light source and the diaphragm 55. In the embodiment, the at least A reflective structure is a plurality of reflective structures, including a first reflective structure 52A and a second reflective structure 52B, which are located on the back plate 51. The first reflective structure 52A and the second reflective structure 52B are separated from each other. A gap 58 is formed. In this embodiment, the reflective structures are reflective sheets or reflective films. However, it can be understood that the reflective structures may also be microstructures. The auxiliary light source 56 is a plurality of LEDs. It is located on the back plate 51 and is located at The light guide plate 53 is a whole piece of light guide plate located above the reflective structures. The light guide plate 53 has a light exit surface (the surface facing the lower left in FIG. 6A). a groove 59, the at least one groove 59 dividing the light guide plate 53 into a plurality of blocks (for example, the first block 53A and the second block iS) I49527.doc •14·201202794 53B), and the blocks Correspondingly disposed above the reflective structures respectively, that is, the first block 53A corresponds to the first reflective structure 52A, and the second block 53B corresponds to the second reflective structure 52B. Preferably, the first block The size of the 53A is the same as the size of the second block 53B. Each of the blocks has at least one light incident surface, that is, the first block 53 A has at least one first light incident surface 531A, and the second The block 53B has at least one second light incident surface 5μβ. The position of the at least one groove 59 corresponds to the position of the gap 58. In the embodiment, the gap 58 and the at least one groove 59 are all in a straight line shape. And the number of the grooves may be a plurality of strips. Preferably, the depth of the groove 59 is greater than the guide One half of the thickness of the plate 53. The light source of the panel 4 is for the light incident surface of the blocks. In this embodiment, the light sources include a plurality of first light sources 54A and a plurality of second light sources 54B. The first light source 54A faces the first light incident surface 531A of the first block 53a, and the first light source 54B faces the second light incident surface 531B of the second block mb. In this embodiment, The light sources (the first light sources 54a and the first light sources 54B) are LEDs, and the output power of the auxiliary light source 56 is smaller than the light sources (the first light sources 54A and the second light sources 54B) ) The output power when turned on, to avoid the bright band caused by the excessive light of the auxiliary light source. The diaphragm 55 (for example, a brightness enhancement film, a diffusion film, or the like) is disposed on the light guide plate 53. The display panel 551 is disposed above the diaphragm 55 of the backlight module 5A. The signal processor is configured to convert a video signal into a control signal (including a luminance signal and a display signal). The controllers are electrically connected to the light source of the processor, the display panel 551 and the backlight module 5G (the first light source 54 and the second The light source 54B) and the auxiliary light source 56 are configured to receive the control signal (including the brightness signal and the display signal), and selectively control the gray level of the auxiliary light source 56, the light sources or some of the light sources according to the brightness signal. Brightness, and driving the display panel 551 according to the display signal. In this embodiment, since the first block 53A and the second block 53B are separated by the at least one groove 59, a better local portion can be achieved. Dimming function. In addition, in order to compensate for the fact that the at least one groove 59 may cause a dark band when the entire screen is completely bright, the auxiliary light source 56 is only illuminated when the first light source 54A and the second light source 54B are both bright, or The light sources of the light incident surfaces of the two adjacent blocks are illuminated when a preset gray scale value is reached. In the present embodiment, the first light sources 54A are located at the periphery of the top surface and the second outer surface of the first block 53 A and the second light sources 54B are located at the second block of the sth. The periphery of the bottom surface and the two outer sides. In other embodiments, however, the first light sources 54A are located only at the periphery of the top surface of the first block 53A and the second light sources 54B are located only outside the bottom surface of the second block 53B. In the present embodiment, the at least one reflective structure is a plurality of reflective structures. However, in other embodiments, the at least one reflective structure may also be a whole reflective structure (without the gap 58). 56 is located on the reflective structure and the position of the auxiliary light source 56 is corresponding to the position of the second gap 59. In the present invention, the number of the blocks may be n, and the reflection structures m 149527.doc -16 - 201202794 correspond to n, preferably the number of blocks is one, and the number of the reflection structures Also, 2n 'where η is an integer ((4), 2, 3), the blocks are arranged in a 2χη matrix, and the reflection structures are also arranged in a 2χη matrix. In the fifth embodiment described above (Fig. 6A), the blocks and the reflection structures are respectively arranged in a 2d matrix. In other embodiments, the child block and the reflective structures may be respectively arranged in a 2χ2 matrix, that is, the reflective structures include a first reflective structure, a second reflective structure, and a third reflection. Structure and - fourth reflective structure. The first reflection structure, the second reflection structure, the third reflection structure, and the third reflection structure are spaced apart from each other to form the gap, and the gap is a cross. The blocks include a first block, a second block, a third block, and a fourth block. The first block is located above the first reflective structure and has at least one first light incident surface, the second block is located above the second reflective structure and has at least one second light incident surface, the third block is located at The third reflective structure has a top surface and a second light incident surface, and the fourth block is located above the fourth reflective structure and has at least one fourth light incident surface. The first block, the second block, the third block and the fourth block are the grooves, and the groove is in the shape of a cross. The position of the gap corresponds to the position of the groove. The light sources include a plurality of first light sources, a plurality of second light sources, a plurality of third light sources, and a plurality of fourth light sources. The first light source surface is for the at least one first light surface of the first block, the second light source surface is at least one second light surface for the second block, and the third light source surface is for the third area At least one third light incident surface of the block, the fourth light source surfaces are at least one fourth light incident surface of the fourth block. m 149527.doc •17· 201202794 Furthermore, the blocks and the reflection structures may be arranged in a 2x3 matrix, a 2x4 matrix, a 2x5 matrix or a 2x6 matrix or other 2xn matrix, respectively. It is to be understood from the above embodiments that the light sources (such as the first light source 24 A and the second light source 24B in FIG. 2A) may be disposed on any light incident surface of the light guide plate, or The two sides enter the glossy surface or any two opposite light surfaces. It should be noted that the light source and the auxiliary light source described in the above embodiments and figures are merely illustrative. It is conceivable that the light source or the auxiliary light source may be a light emitting diode (LED) or a light strip (LED). Light bar) or cold cathode ray tube (CCFL) or a combination thereof achieves the efficacy of the present invention. The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the scope of the present invention. The scope of the invention should be as set forth in the appended claims. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1A is a schematic exploded perspective view of a conventional display device; FIG. 1B is a schematic cross-sectional view showing a conventional display device; FIG. 2A is a perspective exploded view showing a first embodiment of the display device of the present invention; 1 is a schematic cross-sectional view showing a first embodiment of the display device of the present invention; FIG. 3 is a perspective view showing a second embodiment of the display device of the present invention. FIG. The three-dimensional decomposition of the example shows ISI · Garden, 149527.doc 201202794 Figure 4B Figure 5 · Display. 3⁄4 不本发"明Ss — «X . The third embodiment of the display device is a schematic cross-sectional view, · Front view / this The invention shows a schematic diagram of the light guide plate distribution of the fourth embodiment; FIG. 6A; FIG. 6A shows a perspective exploded view of the fifth embodiment of the display device of the present invention, showing the invention of the invention, $^ _ ·' A cross-sectional view of a fifth embodiment of the device. [Main component symbol description]

1 Conventional display device 2 First embodiment of display device of the present invention Third embodiment of display device of the present invention Fourth embodiment of display device of the present invention Fifth embodiment of display device of the present invention 10 backlight module 11 Back plate 12 Reflector 13 Light guide plate 14 LED 15 Diaphragm 16 Display panel 20 Backlight module 21 Back plate 22 Α First reflective structure 22 Β Second reflective structure 23 Α First light guide plate 149527.doc -19- 201202794

23B 24A 24B 25 26 27A 27B 28 30 31 32A 32B 32C 32D 33A 33B 33C 33D 34A 34B 34C 34D 35 Second light guide plate first light source second light source diaphragm auxiliary light source first auxiliary reflection structure second auxiliary reflection structure first gap Second gap backlight module back plate first reflection structure second reflection structure third reflection structure fourth reflection structure first light guide plate second light guide plate third light guide plate fourth light guide plate first light source second light source third light source Four light source diaphragm 149527.doc -20- 201202794

36 Auxiliary light source 37 A First auxiliary reflective structure 37B Second auxiliary reflective structure 37C Third auxiliary reflective structure 37D Fourth auxiliary reflective structure 38 First gap 39 Second gap 43 Light guide plate 44 Light source 50 Backlight module 51 Back plate 52A A reflective structure 52B second reflective structure 53 light guide plate 53A first block 53B second block 54A first light source 54B second light source 55 diaphragm 56 auxiliary light source 58 gap 59 groove 231A first light incident surface 231B second input Glossy [S] I49527.doc •21 - 201202794 232A First inner side 232B Second inner side 251 Display panel 33 ΙΑ First light incident surface 331B Second light incident surface 331C Third light incident surface 331D Fourth inner side 332A First inner side surface 332B second inner side surface 332C third inner side surface 332D fourth light incident surface 351 display panel 53 ΙΑ first light incident surface 531 Β second light incident surface 551 display panel

1' SI 149527.doc -22-

Claims (1)

201202794 VII. Patent Application Range: 1. A backlight module comprising: a backplane; at least one reflective structure on the backplane; - a plurality of light guides disposed above the at least one reflective structure, each lead The light panel has at least one inner side surface and at least one light incident surface, the light guide plates being spaced apart from each other to form at least one second gap; a plurality of auxiliary reflective structures on the inner side surfaces; and • a plurality of light source 'system faces for the The light entrance surface of the light guide plate. 2. The backlight module of claim 1, wherein the at least one reflective structure is a plurality of reflective structures, the reflective structures are spaced apart from each other to form at least one first gap, and the backlight module further comprises at least one auxiliary light source. The back plate is located in the first gap, wherein the position of the first gap corresponds to the position of the second gap, and the inner sides are opposite to each other. 3. The backlight module of claim 2, wherein the output power of the auxiliary light source is less than the output power of the light sources. The backlight module of claim 1, wherein the at least-reflecting structure is a whole reflective structure, the backlight module further comprises at least one auxiliary light source, 'on the reflective structure, wherein the auxiliary light source The position corresponds to the position of the - second gap and the inner sides are opposite each other. 5. The backlight module of claim 4, wherein the output power of the auxiliary light source is less than the output power of the light sources. 6. The backlight module of claim 2, wherein the reflective structures and the auxiliary reflective structures are reflective sheets. 149527.doc 201202794 7. The backlight of claim 2, wherein the reflective structure comprises a first reflective structure and a second reflective structure, the first reflective structure and the second & The first gap is formed by the first light guide plate, and the first light guide plate has a first inner side surface and at least one 筮 _ λτ ^ _ The first light guide plate has a first inner side surface and a second inner light incident surface, the first inner side surface facing the second inner side surface to form the second gap, the first gap and The second gaps are all - linear. The auxiliary reflection structures include a first-assisted anti-calling structure and a second auxiliary reflective structure. The first auxiliary reflective structure is located on the first inner side surface, and the second auxiliary reflection is The light source includes a plurality of first light sources and a plurality of second light sources, wherein the first light sources face at least one first light incident surface of the first light guide plate, and the second light source The light source faces at least one of the second light guide plates Incident surface. The backlight module of claim 2, wherein the reflective structure comprises a first reflective structure, a second reflective structure, a third reflective structure and a fourth reflective structure, the first reflective structure, the first The second reflective structure and the fourth reflective structure are spaced apart from each other to form the first air gap. The first gap is a cross. The light guide plate includes a first light guide plate and a second guide. a light guide plate, a third light guide plate and a fourth light guide plate, the first light guide plate is located above the first reflective structure and has two first inner sides and at least one first light incident surface, wherein the second light guide plate is located at the first light guide plate Above the second reflective structure and having two second inner sides and at least one second light incident surface, the third light guide plate is located above the third reflective structure and has two m I49527.doc -2 - 201202794 third inner side And at least one of: r-stop--the fourth light guide plate is located above the fourth reflective structure and has two fourth inner sides and at least one fourth light-incident surface, the first light guide plate, the second guide Light plate, the third light guide plate and The fourth light guide plates are spaced apart, and the [inner side surfaces, the second inner side surfaces, the third inner side surfaces, and the fourth inner side surfaces form a second working gap] The position of the first gap is corresponding to the position of the second gap. The auxiliary reflection structures include a first auxiliary reflection structure, a second auxiliary reflection structure, a third auxiliary reflection structure, and a fourth auxiliary reflection structure. The first auxiliary reflective structure is located on the second inner side, the second auxiliary reflective structure is located on the second inner side, the third auxiliary reflective structure is located on the third inner side, and the fourth auxiliary reflective structure is located at the second inner side The four inner sides, the light sources include a plurality of A-th sources, a plurality of second light sources, a plurality of third light sources, and a plurality of fourth light sources, wherein the first light source faces are at least a first light entering the first light guide plate The second light source surface is opposite to at least one second light incident surface of the second light guide plate, and the third light source surface is opposite to the third light guide plate to a second light incident surface, and the fourth light source surface Light source face for the fourth guide At least a fourth of the plate surface. A backlight module, comprising: a back plate; at least one reflective structure on the back plate; a light guide plate located above the reflective structure, the light guide plate having a light surface, the light exit surface having at least a __ groove The at least-groove divides the light guide plate into a plurality of blocks, each of the blocks having at least one incoming light m I49527.doc 201202794 face; and a plurality of light sources facing the light incident surface of the blocks. The backlight module of claim 9, wherein the at least one reflective structure is a plurality of reflective structures, and the reflective structures are spaced apart from each other to form at least a gap. The backlight module further includes at least one auxiliary light source on the back The plate is located in the gap, wherein the position of the groove is corresponding to the position of the gap, and the blocks are respectively disposed above the reflective structures. For example, the backlight module of claim 10, wherein the output power of the auxiliary light source is less than the output power of the light sources. The backlight module of claim 9, wherein the at least one reflective structure is a whole reflective structure, the backlight module further comprising at least one auxiliary light source located on the reflective structure, wherein the position of the auxiliary light source corresponds to The position of the groove, and the inner sides are opposite each other. The backlight module of claim 12, wherein the output power of the auxiliary light source is less than the output power of the light sources. For example, the backlight module of the fifth temple of claim 9 wherein the reflective structures are reflective sheets. The backlight module of claim 9, wherein the depth of the groove is greater than one half of the thickness of the light guide plate. 16. A backlight module as claimed in claim 1 wherein the reflective structures comprise a first reflection, . Constructing a second reflective structure, the first reflective structure and the second reflective structure. The spaces are separated from each other to form the gap, and the blocks include a first area and a _ ^ — Γ〇乐二块 block. The first block has at least one first incoming light [S] 149527.doc 201202794 The second block has at least one second light incident surface, the first block and the second block are the grooves, and the gap and the groove are both linear, and the light sources include a plurality of a first light source and a plurality of second light sources, the first light sources facing at least one first light incident surface of the first block, the first light sources facing at least one of the second blocks Two into the glossy side. The backlight module of claim 10, wherein the reflective structures comprise a first reflective structure, a second reflective structure, a third reflective structure, and a fourth reflective structure. The first reflective structure, the second reflective structure, the third reflective structure, and the third reflective structure are spaced apart from each other to form the gap, the gap is a cross shape, and the blocks include m - the second block, - a third block and a fourth block, the first block being located above the first reflective structure and having at least one first light incident surface, the second block being located above the second reflective structure and having at least one a second light incident surface, the third block is located above the third reflective structure and has at least one third light incident surface, the fourth block is located above the fourth reflective structure and has at least a fourth light incident surface, The first block, the second block, the third area [and the fourth block are the groove], the groove is in the shape of a cross, and the position of the gap corresponds to the position of the groove, The equal light source includes a plurality of light sources, a plurality of second light sources, and a complex a third light source and a plurality of fourth such first light source faces for at least one of the first blocks - first into the second light source faces for at least the second block - second into the second light sources For at least the third block of the third block, at least the fourth source of the fourth block, for the fourth block [SI 149527.doc 201202794 18. A display device, comprising: The backlight module of claim 1, wherein a display panel is disposed opposite to the backlight module; " a signal processor for converting a video signal into a control signal; and • a plurality of controllers Electrically connected to the signal processor and the backlight module and the display panel for receiving the control signal and driving the backlight module and the display panel according to the control signal. A display device, comprising: • a backlight module according to claim 9; a display panel disposed opposite to the backlight module; a signal processor for converting a video signal to a control signal; and a plurality of controllers are electrically connected to the signal processor and the backlight module and the display panel for receiving the control signal and driving the backlight module and the display panel according to the control signal . m I49527.doc 6