CN216901242U - Display device - Google Patents
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- CN216901242U CN216901242U CN202220489985.9U CN202220489985U CN216901242U CN 216901242 U CN216901242 U CN 216901242U CN 202220489985 U CN202220489985 U CN 202220489985U CN 216901242 U CN216901242 U CN 216901242U
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Abstract
The utility model discloses a display device, comprising: the backlight module comprises a lamp panel, a diffusion plate support and a three-dimensional reflection structure. The diffusion plate bracket is positioned between the lamp panel and the diffusion plate and used for supporting the diffusion plate; the three-dimensional reflection structure is positioned between the lamp panel and the diffusion plate, divides the lamp panel into a plurality of areas, reflects light rays of light sources in each area and prevents light rays of light sources in adjacent areas from mutual crosstalk; the diffusion plate support is arranged at the corners of a plurality of areas divided by the three-dimensional reflection structure and used for fixing the three-dimensional reflection structure.
Description
Technical Field
The utility model relates to the technical field of display, in particular to a display device.
Background
Due to the characteristics of high brightness, divisible control, energy saving and environmental protection, Light Emitting Diode (LED) lamp panels are widely used in backlight modules of Liquid Crystal Display (LCD) devices in recent years, and achieve high-quality image Display effects.
The LED lamp panel is generally applied to a direct-type backlight module, and the emergent light of the LED is distributed in a brownian manner, and a certain light mixing Distance (OD for short) is required to ensure that the emergent light is uniformly mixed when the LED lamp panel is applied to the backlight module. At present, the number of LEDs on a lamp panel is increased in the related art, the purpose of shortening the light mixing distance is achieved, and the ultra-thin backlight scheme design that the light mixing distance is close to zero is achieved.
Due to the fact that the number of the LEDs is increased, the distance between the LED light sources is reduced, emergent light of the light sources can be leaked to the upper portion of the adjacent light sources, when regional dimming is conducted, the junction of the adjacent partitions can generate obvious halos, the contrast of the regional dimming is affected, and therefore the display effect is affected.
SUMMERY OF THE UTILITY MODEL
In some embodiments of the utility model, a display device includes:
a display panel for image display;
the backlight module is positioned at the light incident side of the display panel; the backlight module includes:
the lamp panel is used as a light source of the backlight module;
the diffusion plate is positioned on the light emergent side of the lamp panel;
the diffusion plate bracket is positioned between the lamp panel and the diffusion plate and used for supporting the diffusion plate;
the three-dimensional reflection structure is positioned between the lamp panel and the diffusion plate; the three-dimensional reflecting structure is fixed on the diffusion plate bracket.
The lamp panel is divided into a plurality of areas by the three-dimensional reflection structure, light rays of the light sources in each area are reflected, and mutual crosstalk of the light rays of the light sources in adjacent areas is prevented; the diffuser plate support is arranged at the corners of a plurality of areas divided by the three-dimensional reflection structure and used for fixing the three-dimensional reflection structure.
In some embodiments of the utility model, the size of one side of the diffusion plate bracket close to the diffusion plate is smaller than the size of one side of the diffusion plate bracket close to the lamp panel; the lamp panel is divided into a plurality of areas by the three-dimensional reflection structure, and the diffusion plate support is positioned at the corner of each area; the one end that the diffuser plate support is close to the lamp plate is provided with a plurality of openings, and the three-dimensional reflection configuration inserts and fixes in the opening of diffuser plate support.
In some embodiments of the utility model, the opening of the diffuser plate bracket is a slit arranged in a direction vertical to the lamp panel; the three-dimensional reflecting structure comprises a plurality of reflecting sheets; the reflecting sheet comprises a substrate and reflecting layers coated on two opposite surfaces of the substrate; the plurality of reflectors are spliced with each other to divide a plurality of areas of the lamp panel; and aiming at each area, a diffusion plate bracket is arranged between adjacent reflection sheets, and two ends of each reflection sheet are respectively inserted into the slits of the diffusion plate brackets at two sides for fixation.
In some embodiments of the present invention, the diffuser plate support has a height greater than the reflector plate; the edge of one side of the reflector plate, which deviates from the lamp panel, is serrated.
In some embodiments of the present invention, the backlight module further comprises: the plane reflector plate is located the one side of lamp plate towards the diffuser plate, and the plane reflector plate includes a plurality of trompils that are used for exposing light source on the lamp plate. The plane reflector plate and the reflector plate vertically arranged form a plurality of reflecting cavities for limiting the emergent range of the light rays in the light source subarea.
In some embodiments of the present invention, the opening of the diffuser plate holder is a groove penetrating the bottom of the diffuser plate holder; the width of one side of the groove close to the lamp panel is larger than that of one side of the groove far away from the lamp panel; the three-dimensional reflecting structure comprises a plurality of reflecting dams; the reflective box dam is made of white silica gel; the plurality of reflecting dams are mutually spliced to divide a plurality of areas of the lamp panel; the width of one side, close to the lamp panel, of the light reflecting dam is larger than that of one side, far away from the lamp panel, of the light reflecting dam, and the shape of the light reflecting dam is the same as that of the groove of the diffusion plate support; and aiming at each area, arranging a diffusion plate support at least one corner position, wherein the light reflecting dam is fixed in the groove of the diffusion plate support.
In some embodiments of the present invention, the backlight module further comprises: the plane reflector plate is located the one side of lamp plate towards the diffuser plate, and the plane reflector plate includes a plurality of trompils that are used for exposing light source on the lamp plate. The plane reflection sheet and the reflection dam form a plurality of reflection cavities for limiting the emergent range of light rays in the light source partition.
In some embodiments of the present invention, the backlight module further comprises: a planar reflective structure; the planar reflection structure is positioned on one side of the lamp panel facing the diffusion plate and comprises a plurality of openings for exposing the light source on the lamp panel; the plane reflection structure and the three-dimensional reflection structure form a three-dimensional reflection sheet of an integrated structure; the opening of the diffusion plate bracket is a groove which penetrates through the bottom of the diffusion plate bracket; the width of one side of the groove close to the lamp panel is larger than that of one side of the groove far away from the lamp panel; the width of one side, close to the lamp panel, of the three-dimensional reflection structure is larger than that of one side, far away from the lamp panel, of the three-dimensional reflection structure, and the shape of the three-dimensional reflection structure is the same as that of the groove of the diffusion plate support; to every region of lamp plate, set up one in at least one corner position diffuser plate support, three-dimensional reflection configuration is fixed in diffuser plate support's recess.
In some embodiments of the utility model, the lamp panel is divided into a plurality of areas by the three-dimensional reflection structure, and the diffusion plate support is positioned at the corner of the areas; the diffusion plate bracket comprises a plurality of supporting parts and a plurality of convex parts; the plurality of supporting parts are mutually connected, and the width of one side, close to the lamp panel, of each supporting part is larger than the width of one side, far away from the lamp panel, of each supporting part; the supporting part comprises two opposite inclined planes which are used for fixing the three-dimensional reflecting structure; the protruding part is positioned at one side of the joint of the supporting parts, which is close to the diffusion plate, and the protruding part is used for supporting the diffusion plate.
In some embodiments of the present invention, the stereoscopic reflective structure includes a plurality of reflective sheets; the reflector plate comprises a substrate and a reflective layer coated on one side surface of the substrate; the plurality of reflectors are spliced with each other to divide a plurality of areas of the lamp panel; aiming at each area, a diffusion plate bracket is arranged between adjacent reflection sheets, and two ends of each reflection sheet are respectively attached to the inclined surfaces of the supporting parts of the diffusion plate brackets at two sides; the reflecting layer of the reflecting sheet is positioned on one side of the inclined plane which is far away from the supporting part.
In some embodiments of the present invention, the backlight module further comprises: a planar reflective structure; the planar reflection structure is positioned on one side of the lamp panel facing the diffusion plate and comprises a plurality of openings for exposing the light source on the lamp panel; the plane reflection structure and the three-dimensional reflection structure form a three-dimensional reflection sheet of an integrated structure; aiming at each area of the lamp panel, arranging one diffusion plate support at least one corner position; the width of one side, close to the lamp panel, of the three-dimensional reflection structure is larger than that of one side, far away from the lamp panel, of the three-dimensional reflection structure, and the shape of the three-dimensional reflection structure is the same as that of the supporting part; the three-dimensional reflection structure is positioned on one side of the diffusion plate support, which is far away from the lamp panel, and is lapped on the surface of the corresponding support part of the diffusion plate support; the three-dimensional reflection structure comprises a through hole for exposing the bulge part of the diffusion plate bracket; the convex part of the diffusion plate bracket passes through the three-dimensional reflecting structure through the through hole to support the diffusion plate.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments of the present invention will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic cross-sectional view of a display device in the related art;
FIG. 2 is a schematic cross-sectional view of a backlight module according to the present invention;
FIG. 3 is a schematic structural diagram of a diffuser plate holder according to an embodiment of the present invention;
fig. 4 is a schematic top view of the lamp panel according to the present invention;
FIG. 5 is a second schematic structural view of a diffuser plate holder according to an embodiment of the present invention;
fig. 6 is a second schematic view of a top view structure of the lamp panel according to the present invention;
FIG. 7 is a second schematic cross-sectional view of a backlight module according to the present invention;
FIG. 8 is a third schematic cross-sectional view of a backlight module according to the present invention;
fig. 9 is a third schematic view of a top view structure of the lamp panel according to the present invention;
FIG. 10 is a fourth schematic cross-sectional view of a backlight module according to the present invention;
FIG. 11 is a third schematic view of a diffuser plate holder according to an embodiment of the present invention;
FIG. 12 is a fifth schematic cross-sectional view of a backlight module according to the present invention;
FIG. 13 is a sixth schematic cross-sectional view of a backlight module according to the present invention;
fig. 14 is a schematic diagram of a reflection light path of a three-dimensional reflection structure according to an embodiment of the present invention;
FIG. 15 is a seventh schematic cross-sectional view of a backlight module according to the present invention;
FIG. 16a is a fourth schematic view of a diffuser plate holder according to an embodiment of the present invention;
FIG. 16b is a fifth schematic view of a diffuser plate holder according to an embodiment of the present invention;
FIG. 17 is an eighth schematic cross-sectional view of a backlight module according to an embodiment of the present invention;
FIG. 18 is a ninth schematic cross-sectional view of a backlight module according to an embodiment of the present invention;
FIG. 19 is a cross-sectional view of a backlight module according to the present invention.
The LED backlight module comprises a backlight module 100, a lamp panel 11, a light source 111, a circuit board 112, a backboard 12, a diffuser plate 13, an optical film 14, a quantum dot film 15, a stereoscopic reflector 16, a bottom surface 161, a side wall 162, a diffuser plate support 17, an L-ray, an L1-ray, an L2-ray, an L3-ray, an OD-light mixing distance, an 18-stereoscopic reflection structure, an S-area, an H-opening, a 19-plane reflector, an 18A-plane reflection structure, an M-bulge part, an N-support part and a T-inclined plane.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, the present invention is further described with reference to the accompanying drawings and examples. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their repetitive description will be omitted. The words indicating positions and directions in the present invention are illustrated by way of example in the accompanying drawings, but may be changed as required and are within the scope of the present invention. The drawings of the present invention are for illustrative purposes only and do not represent true scale.
Due to the characteristics of high brightness, partition control, energy saving and environmental protection, a Light Emitting Diode (LED) lamp panel is widely used in a backlight module of a Liquid Crystal Display (LCD) device in recent years, and achieves an image Display effect with higher image quality.
Fig. 1 is a schematic cross-sectional view of a display device in the related art.
As shown in fig. 1, the display device includes: a backlight module 100 and a display panel 200.
The display panel 200 is used for image display and has a shape and size corresponding to those of the display device. When applied to the field of televisions or mobile terminals, etc., the display panel 200 generally takes a rectangular shape; when applied to a special-shaped display device, the display panel 200 may also be in a shape of a circle, and the like, and is not limited herein.
The display panel 200 is a transmissive display panel, which can modulate the transmittance of light, but does not emit light by itself. The display panel 200 has a plurality of pixel units arranged in an array, and each pixel unit can independently control the transmittance and color of light incident to the pixel unit from the backlight module 100, so that the light transmitted by all the pixel units forms a displayed image.
The backlight module 100 is located at the light incident side of the display panel 200 and is used for providing a backlight source for the display panel 200. The shape and size of the backlight module 100 are adapted to the shape and size of the display panel 200.
The backlight module in the embodiment of the utility model adopts the direct type backlight module, is used for uniformly emitting light rays in the whole light emitting surface, and provides light rays with sufficient brightness and uniform distribution for the display panel, so that the display panel can normally display images.
As shown in fig. 1, the backlight module 100 includes: a lamp panel 11, a back panel 12, a diffuser plate 13, and an optical film 14.
The back plate 12 is located at the bottom of the backlight module 100, and has supporting and bearing functions. The shape of the back plate 12 is adapted to the shape of the backlight module 100. The material of the back plate 2 is aluminum, iron, aluminum alloy or iron alloy. The back plate 12 is used for supporting the lamp panel 11 and supporting and fixing edge positions of the diffusion plate 13, the optical film 14 and other components, and the back plate 12 also plays a role in heat dissipation of the lamp panel 11.
In the embodiment of the present invention, the backlight module is a direct type backlight module, and the lamp panel 11 is used as a light source of the backlight module and is located on one side of the back plate 12 close to the display panel 200. In general, the lamp panel 11 may be square or rectangular in shape, and is adapted to the shape of the back panel 12.
As shown in fig. 1, the lamp panel 11 includes a circuit board 112 and a light source 111 arranged on a side of the circuit board 112 away from the back panel 12.
The Circuit Board 112 is used to provide a driving signal for the light source 111, and a Printed Circuit Board (PCB) or a Thin Film Transistor (TFT) substrate may be used in the specific implementation, and the TFT substrate may implement active driving compared to the PCB, so as to improve driving efficiency, which is not limited herein.
The Light sources 111 may be LEDs, and specifically, Mini LEDs (Mini-Light Emitting diodes, abbreviated as Mini LEDs) may be used, and the Mini LEDs have smaller sizes compared to common LEDs, and more Light sources 111 may be placed on the lamp panel 11 with the same size, so as to achieve higher backlight brightness and finer partition control capability.
Compare and adopt the lamp strip as the backlight in the side income formula backlight unit, lamp plate 11 has higher luminance, at the dynamic control of cooperation subregion, can promote display device's dynamic contrast.
The diffusion plate 13 is provided with scattering particle materials, and light incident on the scattering particle materials can be refracted and reflected continuously, so that the effect of scattering the light is achieved, and the effect of light homogenization is achieved. The thickness of the diffusion plate is usually set to be 0.5mm-3mm, and the larger the thickness of the diffusion plate is, the higher the haze is, and the better the uniform effect is.
The diffuser plate 13 may be manufactured by an extrusion process, and the material of the diffuser plate 13 is generally at least one selected from the group consisting of polymethyl methacrylate PMMA, polycarbonate PC, polystyrene-based material PS, and polypropylene PP.
The optical film 14 is located on a side of the diffuser plate 13 facing away from the lamp panel 11. The optical film 14 is sized to fit the display device, is slightly smaller than the display device, and is typically rectangular or square in configuration.
In practical applications, the optical film 14 may include one or a combination of several fluorescent films, prism sheets, brightness enhancement films, etc., and is disposed according to specific needs, which is not limited herein.
In the embodiment of the present invention, the lamp panel 11 may be used to emit white light or blue light. As shown in fig. 1, when the lamp panel 11 emits blue light, the backlight module 100 further includes a quantum dot film 15. The quantum dot film 15 is located between the diffusion plate 13 and the optical film 14, and the quantum dot film 15 emits red light and green light under excitation of blue light, so that a higher color gamut can be obtained. In specific implementation, the diffusion plate 13 may be a quantum dot diffusion plate, and may implement both color conversion and diffusion functions.
As shown in fig. 1, since the outgoing light of the light source 111 is distributed in a brownian manner, a Distance between the upper surface of the lamp panel 11 and the lower surface of the diffuser 13 is usually a light mixing Distance (OD), and the Distance is set to sufficiently mix the outgoing light of the light source 111 on the lamp panel 11.
At present, through increasing the quantity of light sources on the lamp plate among the correlation technique, reach the purpose of shortening mixed light distance, realized that mixed light distance is close to zero's ultra-thin backlight scheme design, can increase subregion quantity simultaneously, realize more meticulous regional accuse light dynamic control. However, due to the increase of the number of the light sources, the distance between the light sources is reduced, the emergent light of the light sources can leak to the upper side of the adjacent light sources, and when regional dimming is performed, the boundary of the adjacent subareas can generate obvious halos, so that the contrast of the regional dimming is influenced, and the display effect is influenced.
As shown in fig. 1, in the related art, by providing the three-dimensional reflective sheet 16, each dimming area is separated, so that crosstalk between emergent light rays of adjacent partitioned light sources is avoided, and contrast of local dimming is improved.
The three-dimensional reflection sheet 16 is disposed between the lamp panel 11 and the diffusion plate 13, and includes a bottom surface 161 parallel to the lamp panel and a sidewall 162 connected to the bottom surface. The side wall 162 divides the light source 111 on the lamp panel 11 into a plurality of dimming areas, the small-angle light L1 emitted by the light source 111 in each dimming area is diffused and emitted through the diffusion plate 13 after being transmitted within the light mixing distance D, the large-angle light L2 emitted by the light source in each dimming area is reflected by the side wall 162 and then is transmitted towards the diffusion plate 13, and is emitted through the diffusion plate 13, so that the light emitted by the light source 111 in the dimming area is prevented from leaking to an adjacent area, halation is prevented from being generated at the junction of the adjacent areas, and the contrast of area dimming is improved.
Because the bottom surface 161 and the side walls 162 of the three-dimensional reflection sheet 16 are integrally formed in a folding manner, in the folding process, the angles of the side walls of different dimming areas are prone to have angle deviation, so that the shape of a reflection cavity formed by the bottom surface 161 and the side walls 162 is changed, the contrast of a local position is deviated, and a display picture is not uniform.
As shown in fig. 1, the diffuser plate 13 may be deformed to a certain degree due to the weight of the diffuser plate 13 and the weight of the optical film 14 carried by the diffuser plate 13, so that in addition to the support of the back plate 12, a diffuser bracket 17 between the lamp panel 11 and the diffuser plate 13 is usually required to support the diffuser plate 13. Besides the opening needed to expose the light source 111, the bottom surface 161 of the three-dimensional reflection sheet 16 also needs an additional opening to expose the diffuser plate holder 17, which also causes the reflection cavity to be deformed or the holder to be shaded.
If the diffuser 13 is directly supported by the sidewall 162 of the three-dimensional reflective sheet 16, a dark image is generated at a position where the diffuser 13 contacts the three-dimensional reflective sheet 16, and the diffuser 13 presses the three-dimensional reflective sheet 16 to deform the shape of the reflective cavity, which causes a contrast deviation at a local position and affects the display effect of the image.
In view of the above, the present invention provides a display device, which uses a novel diffuser bracket and a three-dimensional reflective structure to solve the problem of light interference of light sources in adjacent dimming areas, and simultaneously avoid causing bracket shadows and contrast deviation of local positions.
Fig. 2 is a schematic cross-sectional view of a backlight module according to an embodiment of the utility model.
As shown in fig. 2, the backlight module provided by the present invention further includes: a diffuser plate support 17 and a three-dimensional reflective structure 18. The diffusion plate support 17 is located between the lamp panel 11 and the diffusion plate 13 and used for supporting the diffusion plate 13 to prevent the diffusion plate 13 from sinking and deforming; the three-dimensional reflection structure 18 is located between the lamp panel 11 and the diffuser plate 13, and the three-dimensional reflection structure 18 is fixed on the diffuser plate support 17.
The lamp panel is divided into a plurality of areas by the three-dimensional reflection structure 18, each area comprises a plurality of light sources 111, and the three-dimensional reflection structure 18 can avoid crosstalk of emergent light rays of adjacent areas. As shown in fig. 2, the small-angle light L1 emitted from the light source 111 propagates within the light mixing distance OD and then is diffused by the diffusion plate 13 and then exits; the large-angle light L2 emitted by the light source 111 enters the three-dimensional reflection structure 18, is reflected by the three-dimensional reflection structure toward the light exit direction of the area where the light source 111 is located, and exits after being diffused by the diffusion plate 13, so that the light emitted by the light source 111 in the area is prevented from leaking to the adjacent area, the halo is prevented from being generated at the junction of the adjacent partitions, and the contrast of regional dimming is improved.
Fig. 3 is a schematic structural diagram of a diffuser plate holder according to an embodiment of the present invention.
As shown in fig. 3, the top of the diffuser bracket 17 provided in the embodiment of the present invention contacts with the diffuser 13 and supports the diffuser 13, and the bottom of the diffuser bracket 17 contacts with the lamp panel 11. In order to avoid local shadows due to an excessively large contact area between the top of the diffuser plate holder 17 and the diffuser plate 13, the top of the diffuser plate holder 17 may be designed to be much smaller than the bottom of the diffuser plate holder 17. In concrete implementation, as shown in fig. 3, the diffuser plate holder 17 may be designed to have a conical shape, and fig. 3 is only for explanation of the embodiment and is not intended to limit the shape of the diffuser plate holder 17.
Fig. 4 is a schematic top view of the lamp panel according to the present invention.
As shown in fig. 4, the light panel is divided into a plurality of regions S by the three-dimensional reflection structure 18, each region S includes a plurality of light sources 111, and in specific implementation, the dynamic brightness control in different regions can be realized by applying different driving signals to the light sources 111 in different regions.
A diffuser plate holder 17 is provided at a corner of the region S for fixing the three-dimensional reflection structure 18. In specific implementation, the plurality of regions S into which the lamp panel is divided by the three-dimensional reflection structure 18 are generally rectangular or square, the diffuser plate support 17 may be disposed at a position of at least one corner for fixing the edge of the three-dimensional reflection structure 18, and two adjacent three-dimensional reflection structures may share one diffuser plate support 17 for fixing. As shown in fig. 2, only the diffuser bracket 17 disposed in the middle area of the lamp panel is shown, and in specific implementation, the diffuser bracket 17 may be disposed at an edge position of the lamp panel for fixing the three-dimensional reflective structure, which is not limited herein.
In the embodiment of the utility model, the three-dimensional reflection structure is a space structure which can form a three-dimensional space with the surface of the lamp panel, the three-dimensional reflection structure 18 is used as a structure for limiting the light source subareas, the light sources in the subareas are limited in a limited range, and the phenomenon that subarea light rays exit to an adjacent area can be avoided. The three-dimensional reflection structure is fixed on the diffusion plate support, so that the stability of the three-dimensional reflection structure can be improved, and the diffusion plate support simultaneously plays a role in supporting the diffusion plate, so that the backlight module is more compact in structure.
In specific implementation, one end of the diffuser plate bracket 17 close to the lamp panel is provided with a plurality of openings, and the three-dimensional reflection structure 18 is inserted into the openings of the diffuser plate bracket 17 for fixation. The quantity of opening can set up according to the regional demand of lamp plate division, does not do the restriction here.
Through the edge of the region S of setting up diffuser plate support 17 on the lamp plate that three-dimensional reflecting structure 18 marks off to insert diffuser plate support 'S tip in diffuser plate support' S opening, make diffuser plate support set up the border position at the light source subregion, diffuser plate support can not occupy the primary position of light source subregion, plays the effect of fixed three-dimensional reflecting structure 18 again simultaneously.
Fig. 5 is a second schematic structural view of a diffuser plate holder according to an embodiment of the present invention. Fig. 5 (a) is a front view of the diffuser plate holder, and fig. 5 (b) is a plan view of the diffuser plate holder. As shown in fig. 5, in some embodiments, the opening H may be a slit disposed perpendicular to the lamp panel, and the three-dimensional reflective structure 18 may be a plurality of reflective sheets. The reflector (18) comprises a substrate and reflective layers coated on two opposite surfaces of the substrate, wherein the substrate can be made of polyethylene terephthalate (PET), and the reflective layers can be made of white ink, barium sulfate, titanium dioxide and a mixture of at least two of the white ink, and the reflective layers are not limited herein. The surface of the diffuser plate holder 17 may also be coated with a reflective material to improve the reflective effect and prevent the diffuser plate holder 17 from causing holder shadows.
Fig. 6 is a second schematic view of a top view structure of the lamp panel provided by the present invention.
As shown in fig. 6, a plurality of reflection sheets (18) are joined to each other on the lamp panel to define a plurality of areas S. In specific implementation, for each region S, one diffuser plate bracket 17 is disposed between adjacent reflector plates, and two ends of each reflector plate are respectively inserted into the slits of the diffuser plate brackets 17 at two sides for fixation.
In the implementation, the area S divided by the reflective sheets (18) spliced with each other may be rectangular or square, in which case, a diffuser plate support 17 is required to be disposed at each of the four corners of the area S, so that the reflective sheets of the four edge sheets can be fixed.
Fig. 7 is a second cross-sectional view of the backlight module according to the present invention.
As shown in fig. 7, the stereoscopic reflective structure 18 divides the lamp panel into a plurality of regions, each region includes a plurality of light sources 111, and small-angle light rays L1 emitted by the light sources 111 are emitted after being spread within the light mixing distance OD and then diffused by the diffuser plate 13; the large-angle light L2 emitted by the light source 111 enters the reflective sheet, is reflected to the light exit direction of the area where the light source 111 is located, and exits after being diffused by the diffusion plate 13, so that the light emitted by the light source 111 in the area is prevented from leaking to the adjacent area, the halo is prevented from being generated at the junction of the adjacent subareas, and the contrast of regional dimming is improved.
Fig. 8 is a third schematic cross-sectional view of a backlight module according to the present invention.
As shown in fig. 8, in the embodiment of the present invention, the diffuser plate holder 17 has a height greater than that of the reflective sheet; the edge of one side of the reflector plate (18) departing from the lamp panel is serrated.
The reflector plate (18) is located between the lamp panel 11 and the diffuser plate 13, the height of the diffuser plate support 17 is larger than that of the reflector plate, one side edge of the reflector plate departing from the lamp panel 11 is not in direct contact with the diffuser plate 13, the reflector plate is prevented from being stressed and deformed, and meanwhile, the contact part of the reflector plate and the diffuser plate 13 is prevented from forming a shadow.
The edge of the reflector sheet (18) facing away from the lamp panel 11 may be serrated. Design one side edge that deviates from lamp plate 11 with the reflector plate for the cockscomb structure, can reduce the area of contact of reflector plate and diffuser plate, avoid forming the shadow because of the reflector plate large tracts of land contacts with diffuser plate 13, influence display effect. The shape of the reflector plate deviating from one side edge of the lamp panel 11 can be designed into other shapes according to requirements, and is not limited here.
Fig. 9 is a third schematic view of a top view structure of the lamp panel according to the present invention; FIG. 10 is a fourth schematic cross-sectional view of a backlight module according to the present invention.
As shown in fig. 9 and 10, in some embodiments, the backlight module may further include: a planar reflective sheet 19. As shown in fig. 9, the plane reflection sheet 19 is located on one side of the lamp panel facing the diffusion plate, the plane reflection sheet 19 is disposed parallel to the lamp panel, and the plane reflection sheet 19 includes a plurality of openings for exposing the light sources 111 in the region S. As shown in fig. 10, the planar reflective sheet 19 and the reflective sheet (18) form a plurality of reflective cavities, the planar reflective sheet 19 can further reflect the light L3 reflected by the diffuser plate 13 and the reflective sheet (18) toward the lamp panel, and the light emitted from the light source 111 is reflected by the diffuser plate 13 in the reflective cavities for a plurality of times, so as to improve the utilization rate of the light.
Fig. 11 is a third schematic view of a diffuser plate holder according to an embodiment of the present invention. The diffuser plate holder according to the embodiment of the present invention is (a) a front view of the diffuser plate holder according to the embodiment of the present invention, and (b) a top view of the diffuser plate holder according to the embodiment of the present invention.
As shown in fig. 11, in some embodiments, the opening H of the diffuser plate holder 17 may be shaped as a groove through the bottom of the diffuser plate holder 17; the width that the recess is close to lamp plate one side is greater than the width that the lamp plate one side was kept away from to the recess. And the three-dimensional reflecting structure 18 can comprise a plurality of reflecting dams, and a plurality of reflecting dams (18) are spliced with each other on the lamp panel to divide a plurality of areas. For each area, a diffuser plate holder 17 is provided at least one corner position, and the light reflecting dam is fixed in the groove of the diffuser plate holder 17. The quantity of recess can set up according to the regional demand of lamp plate division, does not do the injecing here. The reflective dam may be made of white silica gel, which is not limited herein.
FIG. 12 is a fifth schematic cross-sectional view of a backlight module according to the present invention.
Specifically, as shown in fig. 12, a reflective dam (18) is located between the lamp panel 11 and the diffuser panel 13. Wherein, the width that the reflection of light box dam is close to lamp plate one side is less than the width that the reflection of light box dam kept away from lamp plate one side, and the shape of reflection of light box dam is the same with the shape of the recess of diffuser plate support 17 to ensure that three-dimensional reflection structure 18 just fixes in the recess.
The height of diffuser plate support 17 is greater than the height of reflection of light box dam (18), and the bottom at diffuser plate support 17 is fixed to the reflection of light box dam, guarantees from this that one side edge that the reflection of light box dam deviates from lamp plate 11 does not with diffuser plate 13 direct contact, avoids forming the shadow.
As shown in fig. 12, the small-angle light L1 emitted by the light source 111 in each region is emitted after being diffused by the diffusion plate 13 after propagating within the light mixing distance OD; the large-angle light L2 emitted by the light source 111 enters the light reflecting dam (18), is reflected by the three-dimensional light reflecting dam to the light emitting direction of the area where the light source 111 is located, and is emitted after being diffused by the diffusion plate 13, so that the light emitted by the light source 111 in the area is prevented from leaking to the adjacent area, the halo is prevented from being generated at the junction of the adjacent subareas, and the contrast of regional dimming is improved.
FIG. 13 is a sixth schematic cross-sectional view of a backlight module according to the present invention.
In the above embodiments of the present invention, the backlight module may further include: a planar reflective sheet 19. The plane reflector plate 19 is located the one side that the diffuser plate 13 was faced to the lamp plate, and plane reflector plate 19 is on a parallel with the lamp plate setting, and plane reflector plate 19 includes a plurality of trompils that are used for exposing light source 111 in the region S.
Fig. 14 is a schematic diagram of a reflection light path of the three-dimensional reflection structure according to the embodiment of the present invention. Wherein (a) in fig. 14 is a schematic view of a reflection light path of the reflection sheet, and (b) in fig. 14 is a schematic view of a reflection light path of the reflection dam.
As shown in fig. 14, the width that the reflection box dam is close to lamp plate one side is less than the width that the reflection box dam kept away from lamp plate one side to form two inclined planes that become certain inclination with the lamp plate, the structure of the reflector plate of reflection box dam structure than the perpendicular setting of perpendicular to is more firm. As shown in fig. 14 (a), when a large-angle light L emitted from the light source enters the reflective sheet, the reflective sheet is vertically disposed, so that the light L is reflected and then emitted at a large angle, and cannot be utilized by the front view. As shown in fig. 14 (b), when the large-angle light L emitted from the light source enters the reflective box dam, the surface of the reflective box dam is an inclined surface with a certain inclination angle, so that the emergent angle of the light L after being reflected is reduced, and the light L can be utilized by the front viewing angle. Therefore, in specific implementation, the three-dimensional reflection structure can be provided with an inclined plane with a certain inclination angle, so that the light rays reflected by the three-dimensional reflection structure are emitted at a small angle as much as possible, and the brightness under the normal viewing angle is improved.
Fig. 15 is a seventh schematic cross-sectional view of a backlight module according to the present invention.
As shown in fig. 15, in some embodiments, the backlight module 100 further includes: a planar reflective structure 18A. The planar reflection structure 18A is located on a side of the lamp panel 11 facing the diffuser 13, and the three-dimensional reflection structure 18 is located on a side of the planar reflection structure 18A facing the diffuser 13. The planar reflective structure 18A includes a plurality of openings for exposing the light sources 111 on the lamp panel. In the embodiment of the present invention, the planar reflection structure 18A and the three-dimensional reflection structure 18 are an integral structure, that is, the planar reflection structure 18A and the three-dimensional reflection structure 18 form a three-dimensional reflection sheet, and the three-dimensional reflection sheet can be obtained by one-step forming through a folding or a blister process, which is not limited herein.
At this time, referring to fig. 11, the opening H of the diffuser plate holder 17 may be shaped as a groove penetrating the bottom of the diffuser plate holder 17; the width that the recess is close to lamp plate one side is greater than the width that the recess kept away from lamp plate one side. And the three-dimensional reflection structure 18 in the three-dimensional reflector plate divides the lamp panel into a plurality of areas, and to every area, sets up a diffuser plate support 17 in at least one corner position, and three-dimensional reflection structure 18 is fixed in diffuser plate support's recess.
The width of the side of the three-dimensional reflection structure 18 close to the lamp panel 11 is greater than the width of the side of the three-dimensional reflection structure 18 far from the lamp panel 11, and the shape of the three-dimensional reflection structure 18 is the same as that of the groove of the diffusion plate support 17, so that the three-dimensional reflection structure 18 is ensured to be just fixed in the groove.
As shown in fig. 15, the three-dimensional reflector composed of the planar reflection structure 18A and the three-dimensional reflection structure 18 is located between the lamp panel 11 and the diffuser plate 13, the height of the diffuser plate bracket 17 is greater than the height of the three-dimensional reflection structure 18, and the edge of the three-dimensional reflection structure 18 away from the lamp panel 11 is not in direct contact with the diffuser plate 13, so as to prevent the three-dimensional reflection structure 18 from being deformed by stress, and prevent the contact portion between the three-dimensional reflection structure 18 and the diffuser plate 13 from being shaded due to no light irradiation.
The surface of the diffusion plate supporter 17 may be coated with a light reflecting material so that the diffusion plate supporter 17 has a light reflecting effect. As shown in fig. 15, the small-angle light L1 emitted by the light source 111 in each region is diffused by the diffusion plate 13 and then emitted after being transmitted in the light mixing distance OD, and the large-angle light L2 emitted by the light source 111 enters the three-dimensional reflection structure 18 and then is reflected by the three-dimensional reflection structure 18 toward the light emitting direction of the region where the light source 111 is located, and is emitted after being diffused by the diffusion plate 13, so that the light emitted by the light source 111 in the region is prevented from leaking to an adjacent region, halo is prevented from being generated at the boundary between adjacent regions, and the contrast of regional dimming is improved.
Meanwhile, the planar reflection structure 18A and the three-dimensional reflection structure 18 jointly form a plurality of reflection cavities corresponding to the areas partitioned by the three-dimensional reflection structure 18, the planar reflection structure 18A can further reflect the light L3 reflected by the diffusion plate 13 and the three-dimensional reflection structure 18 in the direction of the lamp panel 11 toward the diffusion plate 13, and the light emitted from the light source 111 is emitted through the diffusion plate 13 after being reflected for multiple times in the reflection cavities, so that the utilization rate of the light is improved.
Through setting up diffuser plate support 17 in the edge of the region that the three-dimensional reflector plate was divided to through the fixed three-dimensional reflector plate of diffuser plate support 17, can avoid setting up the diffuser plate support at the extra trompil on the three-dimensional reflector plate, avoid causing the deformation of three-dimensional reflector plate or form the shadow because of the trompil, fix the three-dimensional reflector plate through diffuser plate support 17 simultaneously, guaranteed the stability of backlight unit structure.
FIG. 16a is a fourth schematic view of a diffuser plate holder according to an embodiment of the present invention; fig. 16b is a fifth schematic view of a diffuser plate holder according to an embodiment of the present invention.
As shown in fig. 16a and 16b, in some embodiments, the diffuser plate support 17 provided in the embodiments of the present invention includes a plurality of support portions N and a plurality of protruding portions M.
A plurality of supporting parts N interconnect, the bottom and the lamp plate contact of a plurality of supporting parts N and fix diffuser plate support 17 on the lamp plate. The width that supporting part N is close to lamp plate one side is greater than the width that the supporting part kept away from lamp plate one side to form the inclined plane T of two relative settings, inclined plane T is used for fixed three-dimensional reflective structure 18.
The protrusion M is located at the top of the interconnection of the plurality of support parts N. The protruding portion M is used for supporting the diffusion plate 13, and the size of the protruding portion M is far smaller than the size of the plurality of supporting portions N, so that local shadows caused by the overlarge contact area between the protruding portion M and the diffusion plate 13 are avoided.
Fig. 17 is an eighth schematic cross-sectional view of a backlight module according to an embodiment of the utility model.
As shown in fig. 17, the diffuser bracket 17 is located between the lamp panel 11 and the diffuser 13, and is used for supporting the diffuser 13 to prevent the diffuser 13 from sinking and deforming. The protruding portion M of the diffuser plate support 17 is located at one side close to the diffuser plate 13, the supporting portion N of the diffuser plate support 17 is located at one side close to the lamp panel 11, the size of the protruding portion M is far smaller than that of the supporting portion N, and local shadows caused by the fact that the contact area of the protruding portion M and the diffuser plate 13 is too large and light does not exist at the contact position are avoided.
In the embodiment of the present invention, the three-dimensional reflective structure 18 may be a plurality of reflective sheets, and the plurality of reflective sheets are spliced on the lamp panel to divide a plurality of regions. The reflecting sheet comprises a substrate and a reflecting layer coated on one side surface of the substrate. The base material may be polyethylene terephthalate PET, and the reflective layer may be white ink, barium sulfate, titanium dioxide, or a mixture of at least two thereof, which is not limited herein.
In specific implementation, for each area, a diffusion plate support 17 is arranged between adjacent reflection sheets, two ends of each reflection sheet (18) are respectively attached to the inclined planes T of the support parts N of the diffusion plate supports 17 on the two sides, and the reflection layer of each reflection sheet is located on one side of the inclined plane T departing from the support part.
As shown in fig. 17, the height of the diffuser bracket 17 is greater than the height of the reflector (18), and the edge of the reflector facing away from the lamp panel 11 does not directly contact with the diffuser 13, so as to avoid the reflector from being deformed by stress and avoid the contact part between the reflector and the diffuser 13 from being shaded due to no light irradiation.
The small-angle light L1 emitted by the light source 111 is diffused by the diffusion plate 13 and then emitted after being transmitted within the light mixing distance OD, and the large-angle light L2 emitted by the light source 111 is incident on the reflector (18) and then reflected by the reflector (18) toward the light emitting direction of the area where the light source 111 is located, and is emitted after being diffused by the diffusion plate 13, so that the light emitted by the light source 111 in the area is prevented from leaking to the adjacent area, the halo is prevented from being generated at the boundary of the adjacent subareas, and the contrast of regional dimming is improved.
Fig. 18 is a ninth schematic cross-sectional view of a backlight module according to an embodiment of the utility model.
As shown in fig. 18, in some embodiments, the backlight module may further include: a planar reflective sheet 19. The plane reflector plate 19 is located the one side that the diffuser plate is faced to the lamp plate, and plane reflector plate 19 is on a parallel with the lamp plate setting, and plane reflector plate 19 includes a plurality of trompils that are used for exposing light source 111 in the region S.
As shown in fig. 18, the planar reflective sheet 19 and the reflective sheet (18) form a plurality of reflective cavities, the planar reflective sheet 19 can further reflect the light L3 reflected by the diffuser plate 13 and the reflective sheet (18) toward the lamp panel 11, and the light emitted from the light source 111 is reflected by the diffuser plate in the reflective cavities for multiple times, so as to improve the utilization rate of the light.
FIG. 19 is a cross-sectional view of a backlight module according to the present invention.
As shown in fig. 19, in some embodiments, the backlight module 100 further includes: a planar reflective structure 18A. The planar reflection structure 18A is located on a side of the lamp panel 11 facing the diffuser 13, and the three-dimensional reflection structure 18 is located on a side of the planar reflection structure 18A facing the diffuser 13. The planar reflecting structure 18A includes a plurality of openings for exposing the light source 111 on the lamp panel; the planar reflection structure 18A and the three-dimensional reflection structure 18 are an integral structure, that is, the planar reflection structure 18A and the three-dimensional reflection structure 18 form a three-dimensional reflection sheet, and the three-dimensional reflection sheet can be obtained by one-step forming through a folding or plastic-suction process, which is not limited herein.
The stereoscopic reflective structure 18 divides the lamp panel into a plurality of regions. In practice, one diffuser plate holder 17 is provided at least one corner position for each area. The width that three-dimensional reflecting structure 18 is close to lamp plate 11 one side is greater than the width that three-dimensional reflecting structure kept away from lamp plate one side, and the shape of three-dimensional reflecting structure 18 is the same with the shape of supporting part N in the diffuser plate support, sets up three-dimensional reflecting structure 18 in the one side that diffuser plate support 17 deviates from lamp plate 11, with the surface of 18 overlap joints of three-dimensional reflecting structure at the supporting part N of the diffuser plate support 17 that corresponds.
In practice, a hole may be formed in the three-dimensional reflection structure 18 at a position where the diffuser plate holder 17 is disposed, so that the protrusion of the diffuser plate holder 17 may support the diffuser plate through the hole. Therefore, the height of the diffusion plate bracket 17 is greater than that of the three-dimensional reflection structure 18, and the edge of one side of the three-dimensional reflection structure 18, which is away from the lamp panel 11, is not in direct contact with the diffusion plate 13, so that a shadow is prevented from being formed.
As shown in fig. 19, the small-angle light L1 emitted by the light source 111 is diffused by the diffusion plate 13 and then emitted after being transmitted within the light mixing distance OD, and the large-angle light L2 emitted by the light source 111 is incident on the three-dimensional reflection structure 18 and then reflected by the three-dimensional reflection structure 18 toward the light emitting direction of the region where the light source 111 is located, and is emitted after being diffused by the diffusion plate 13, so that the light emitted by the light source 111 in the region is prevented from leaking to an adjacent region, a halo is prevented from being generated at a boundary between adjacent partitions, and the contrast of regional dimming is improved.
Meanwhile, as shown in fig. 19, the planar reflection structure 18A and the three-dimensional reflection structure 18 jointly form a plurality of reflection cavities, the planar reflection structure 18A can further reflect the light L3 reflected by the diffusion plate 13 and the three-dimensional reflection structure 18 toward the lamp panel, and the light emitted from the light source 111 is emitted through the diffusion plate 13 after being reflected for multiple times in the reflection cavities, so that the utilization rate of the light is improved.
The embodiment of the utility model provides a three-dimensional reflection structure and a diffusion plate bracket applied to a direct type backlight module. The lamp plate of the backlight module is divided into a plurality of regions by the three-dimensional reflection structure, light of the light source in the region is reflected, the light source of adjacent regions is prevented from being mutually interfered to form a halo, the three-dimensional reflection structure is fixed on the diffusion plate support, and compared with the scheme that holes are formed in the three-dimensional reflection plate to expose the diffusion plate support in the related art, the local shadow caused by uneven light reflection and the diffusion plate support due to the fact that the three-dimensional reflection structure is deformed due to the holes is avoided, and the display effect is optimized.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the utility model.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the utility model. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. A display device, comprising:
a display panel for image display;
the backlight module is positioned at the light incident side of the display panel; the backlight module includes:
the lamp panel is used as a light source of the backlight module;
the diffusion plate is positioned on the light emergent side of the lamp panel;
the diffusion plate bracket is positioned between the lamp panel and the diffusion plate and used for supporting the diffusion plate;
the three-dimensional reflection structure is positioned between the lamp panel and the diffusion plate; the three-dimensional reflection structure is fixed on the diffusion plate support.
2. The display apparatus of claim 1, wherein a dimension of a side of the diffuser bracket adjacent the diffuser plate is smaller than a dimension of the diffuser bracket adjacent the lamp panel;
the lamp panel is divided into a plurality of areas by the three-dimensional reflection structure, and the diffusion plate support is positioned at the corner of the areas; one end of the diffusion plate support close to the lamp panel is provided with a plurality of openings, and the three-dimensional reflection structure is inserted into the openings of the diffusion plate support to be fixed.
3. The display device of claim 2, wherein the opening is a slit arranged perpendicular to the direction of the lamp panel;
the three-dimensional reflecting structure comprises a plurality of reflecting sheets; the reflecting sheet comprises a substrate and reflecting layers coated on two opposite surfaces of the substrate;
the plurality of reflectors are spliced with one another to divide a plurality of areas of the lamp panel; and aiming at each region, one diffusion plate bracket is arranged between the adjacent reflection sheets, and the two ends of each reflection sheet are respectively inserted into the slits of the diffusion plate brackets at the two sides for fixing.
4. The display device according to claim 3, wherein a height of the diffusion plate holder is greater than a height of the reflection sheet;
one side edge of the reflector plate deviating from the lamp panel is serrated.
5. The display apparatus of claim 2, wherein the opening is a recess through a bottom of the diffuser plate holder; the width of one side, close to the lamp panel, of the groove is larger than the width of one side, far away from the lamp panel, of the groove;
the three-dimensional reflecting structure comprises a plurality of reflecting dams; the reflective box dam is made of white silica gel;
the plurality of reflecting dams are mutually spliced to divide a plurality of areas of the lamp panel; the width of one side, close to the lamp panel, of the light reflecting dam is larger than the width of one side, far away from the lamp panel, of the light reflecting dam, and the shape of the light reflecting dam is the same as that of the groove of the diffusion plate support;
and aiming at each area, arranging one diffusion plate bracket at least one corner position, wherein the light reflecting dam is fixed in the groove of the diffusion plate bracket.
6. The display device of claim 2, wherein the backlight module further comprises: a planar reflective structure; the planar reflection structure is positioned on one side of the lamp panel facing the diffusion plate and comprises a plurality of openings for exposing the light source on the lamp panel; the planar reflection structure and the three-dimensional reflection structure are of an integral structure;
the opening is a groove which penetrates through the bottom of the diffusion plate bracket; the width of one side, close to the lamp panel, of the groove is larger than the width of one side, far away from the lamp panel, of the groove;
the width of one side, close to the lamp panel, of the three-dimensional reflection structure is larger than the width of one side, far away from the lamp panel, of the three-dimensional reflection structure, and the shape of the three-dimensional reflection structure is the same as that of the groove of the diffusion plate support;
the lamp panel is characterized in that each area of the lamp panel is provided with one diffusion plate support at least one corner position, and the three-dimensional reflection structure is fixed in the groove of the diffusion plate support.
7. The display device of claim 1, wherein the three-dimensional reflective structure divides the lamp panel into a plurality of regions, and the diffuser plate support is located at a corner of the regions;
the diffuser plate holder includes a plurality of support portions and a protrusion portion; the supporting parts are mutually connected, and the width of one side, close to the lamp panel, of each supporting part is larger than the width of one side, far away from the lamp panel, of each supporting part; the supporting part comprises two opposite inclined planes, and the inclined planes are used for fixing the three-dimensional reflecting structure; the protruding part is positioned at one side of the joint of the supporting parts, which is close to the diffusion plate, and the protruding part is used for supporting the diffusion plate.
8. The display device of claim 7, wherein the stereoscopic reflective structure comprises a plurality of reflective sheets; the reflecting sheet comprises a substrate and a reflecting layer coated on one side surface of the substrate;
the reflector plates are spliced with one another to divide a plurality of areas of the lamp panel; aiming at each area, one diffusion plate bracket is arranged between the adjacent reflection sheets, and the two ends of each reflection sheet are respectively attached to the inclined surfaces of the supporting parts of the diffusion plate brackets at the two sides; the reflecting layer of the reflector plate is positioned on one side of the inclined plane deviating from the supporting part.
9. The display device of claim 7, wherein the backlight module further comprises: a planar reflective structure; the planar reflection structure is positioned on one side, facing the diffusion plate, of the lamp panel and comprises a plurality of open holes used for exposing the light source on the lamp panel; the planar reflection structure and the three-dimensional reflection structure are of an integral structure;
aiming at each area of the lamp panel, arranging one diffusion plate bracket at least one corner position;
the width of one side, close to the lamp panel, of the three-dimensional reflection structure is larger than the width of one side, far away from the lamp panel, of the three-dimensional reflection structure, the shape of the three-dimensional reflection structure is the same as that of the supporting part, the three-dimensional reflection structure is located on one side, away from the lamp panel, of the diffusion plate support, and the three-dimensional reflection structure is overlapped on the surface of the corresponding supporting part of the diffusion plate support; the three-dimensional reflection structure comprises a through hole for exposing the bulge part of the diffusion plate bracket; the convex part of the diffusion plate bracket passes through the three-dimensional reflecting structure through the through hole to support the diffusion plate.
10. The display device of claim 3, 5 or 8, wherein the backlight module further comprises: the plane reflector plate, the plane reflector plate is located the lamp plate towards one side of diffuser plate, the plane reflector plate includes a plurality of trompils that are used for exposing light source on the lamp plate.
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| CN202220489985.9U CN216901242U (en) | 2022-03-08 | 2022-03-08 | Display device |
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| CN202220489985.9U CN216901242U (en) | 2022-03-08 | 2022-03-08 | Display device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024050937A1 (en) * | 2022-09-06 | 2024-03-14 | 瑞仪(广州)光电子器件有限公司 | Direct type backlight module having diffusion plate supporting function and display |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024050937A1 (en) * | 2022-09-06 | 2024-03-14 | 瑞仪(广州)光电子器件有限公司 | Direct type backlight module having diffusion plate supporting function and display |
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