CN214098031U

CN214098031U - a display device

Info

Publication number: CN214098031U
Application number: CN202120339353.XU
Authority: CN
Inventors: 张楠楠; 李富琳
Original assignee: Hisense Visual Technology Co Ltd
Current assignee: Hisense Visual Technology Co Ltd
Priority date: 2021-02-05
Filing date: 2021-02-05
Publication date: 2021-08-31
Anticipated expiration: 2031-02-05

Abstract

The utility model discloses a display device, which comprises a display panel and a backlight module; the backlight module includes: the backplate, a plurality of lamp plates and the reflector plate that includes a plurality of net points, the reflector plate is located the one side that the lamp plate deviates from the backplate, set up the concatenation seam department between two adjacent lamp plates for concatenation seam position department light is by the reflexion utilization once more behind the reflector plate, the existence of a plurality of net points has been avoided leading to concatenation seam position department to be lighter than other display area of lamp plate behind the attached reflector plate partially, reduce the regional difference of luminance with other display area of lamp plate of piece, realize backlight unit's demonstration luminance homogenization.

Description

Display device

Technical Field

The utility model relates to a show technical field, especially relate to a display device.

Background

With the rapid progress of Liquid Crystal Display (LCD) manufacturing technology and the advantages of being light, thin, power-saving, and radiation-free, LCD displays are widely used in various electronic products such as notebook computers, digital cameras, digital camcorders, mobile phones, computer screens, and LCD tvs. However, since the lcd panel in the lcd is a non-self-luminous display panel, the display function can be generated only by the light source provided by the backlight module.

Currently, the commonly used backlight modules include a side-in type backlight module and a direct type backlight module. In the straight following formula backlight unit of jumbo size, in order to prevent that the too big panel that leads to of printed circuit board size harmomegathus is serious, the not high scheduling problem of pad precision, the mode that adopts a plurality of lamp plate concatenations provides in a poor light usually, but the concatenation seam can appear during the lamp plate concatenation, leads to the light of concatenation seam position department can't be recycled by the reflexion and the dark line appears for backlight unit display area luminance is inhomogeneous, influences display device's display effect.

SUMMERY OF THE UTILITY MODEL

In some embodiments of the present invention, a display device includes: the display device comprises a display panel and a backlight module; the backlight module includes: the LED lamp comprises a back plate, a plurality of lamp panels and a reflector plate comprising a plurality of lattice points, wherein the reflector plate is positioned on one side of each lamp panel, which is far away from the back plate, and is arranged at a splicing seam between every two adjacent lamp panels, so that light rays at the position of the splicing seam are reflected and utilized again after passing through the reflector plate; the existence of a plurality of net points has avoided leading to splice seam position department than other display area of lamp plate to be bright partially behind the attached reflector plate, reduces splice area and other display area luminance differences of lamp plate, realizes backlight unit's display brightness homogenization.

The utility model discloses in some embodiments, the lamp plate includes: the circuit board provides a driving signal for the light source, and the reflective layer is an insulating protective layer and has the function of protecting the circuit board.

The utility model discloses in some embodiments, the reflectivity of reflector layer and the difference of the reflectivity of reflector plate are less than the default, avoid the reflector plate to be too big than the reflectivity difference of reflector layer, the inhomogeneous problem of display device luminance that leads to.

The utility model discloses in some embodiments, the site is the trompil, and the existence of trompil has been avoided leading to splice seam position department than other display area of lamp plate to be bright partially behind the attached reflector plate, reduces splice area and the difference of other display area luminance of lamp plate, realizes backlight unit's demonstration luminance homogenization.

The utility model discloses in some embodiments, the site is the light absorption point, and the existence of light absorption point has been avoided leading to splice seam position department than other display area of lamp plate to shine partially behind the attached reflector plate, reduces splice area and the difference of other display area luminance of lamp plate, realizes backlight unit's demonstration luminance homogenization.

In some embodiments of the present invention, the light absorbing point is made of black ink.

The utility model discloses in some embodiments, the material that the reflector layer adopted and to have the reflection nature coats in the surface of circuit board, and the position at the pad place that processes such as rethread sculpture will be used for welding light source is exposed to form the trompil that is used for exposing the light source, the reflector layer adopts the material that has the reflection nature to make the light that reflects back on the lamp plate utilize by the reflexion once more behind the luminescent layer, has improved the utilization ratio of light source.

The utility model discloses some embodiments, the material that the reflector layer adopted is for having the white printing ink of the nature that reflects to light, and white printing ink's reflectivity is greater than or equal to 85%.

The utility model discloses in some embodiments, the light source adopts miniature emitting diode, and miniature emitting diode's electrode welding realizes the electricity between the two to connect on the pad that the circuit board exposes, and miniature emitting diode is different from ordinary emitting diode, its concrete miniature emitting diode chip that indicates. Because the size of the micro light-emitting diode is very small, the dynamic light-emitting control of the backlight module is favorably controlled to smaller partitions, more refined dynamic control can be realized, and the dynamic contrast of the display device is improved.

In some embodiments of the present invention, the size of the micro light emitting diode is less than 500 μm.

The utility model discloses in some embodiments, when the light source adopted miniature emitting diode, the lamp plate still included the encapsulated layer, and the encapsulated layer is glued for the protection that covers miniature emitting diode and deviates from circuit board side surface. The packaging layer is used for packaging and protecting the micro light-emitting diode and preventing foreign matters from entering the interior of the micro light-emitting diode.

In some embodiments of the present invention, when the light source is a light emitting diode, the light emitting diode further includes a light emitting chip and a package structure for packaging the light emitting chip, and the light emitting chip is used for emitting light with a set wavelength; the packaging structure is a protection structure arranged on the surface of one side, away from the circuit board, of the light-emitting chip. The packaging structure is used for packaging and protecting the light emitting diode and preventing foreign matters from entering the inside of the light emitting diode.

In some embodiments of the present invention, the backlight module further comprises: the light source comprises a diffusion plate, a diffusion plate support and an optical membrane, wherein the diffusion plate is used for scattering incident light, so that the light passing through the diffusion plate is more uniform, and the light homogenizing effect is realized; the diffusion plate bracket is used for supporting the diffusion plate and preventing the diffusion plate from warping and deforming; the arrangement of the optical film can make the backlight module adapt to various practical applications.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required 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 for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic cross-sectional structure diagram of a display device according to an embodiment of the present invention;

fig. 2 is a schematic cross-sectional structure view of a backlight module according to an embodiment of the present invention;

fig. 3 is a partial top view of a backlight module according to an embodiment of the present invention;

fig. 4 is one of top views of a reflector plate according to an embodiment of the present invention;

fig. 5 is a second top view of a reflector according to an embodiment of the present invention.

The LED backlight module comprises a backlight module 100, a display panel 200, a back panel 11, a lamp panel 12, a diffusion plate 13, a diffusion plate 14, a diffusion plate support 15, an optical membrane 15, a reflector 16, a circuit board 121, a light source 122, a light reflecting layer 123, an opening 161, a light absorbing point 162, a D-dot and an S-splicing seam.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be 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 for expressing the position and direction described in the present invention are all the explanations given by taking the drawings as examples, but can be changed according to the needs, and the changes are all included in the protection scope of the present invention. The drawings of the present invention are only for illustrating the relative positional relationship and do not represent true proportions.

The liquid crystal display mainly comprises a backlight module and a liquid crystal display panel. The liquid crystal display panel does not emit light, and brightness display needs to be realized by a light source provided by the backlight module.

The display principle of the liquid crystal display is that liquid crystal is placed between two pieces of conductive glass, and the electric field effect of liquid crystal molecule distortion is caused by the driving of an electric field between two electrodes so as to control the transmission or shielding function of a backlight source, thereby displaying an image. If a color filter is added, a color image can be displayed.

Fig. 1 is a schematic cross-sectional structure diagram of a display device according to an embodiment of the present invention.

Referring to fig. 1, the display device includes: a backlight module 100 and a display panel 200.

The display panel 200 is located at the light emitting side of the backlight module 100, the shape and size of the display panel are generally matched with those of the backlight module, and the display panel 200 may be configured as a rectangle in general, including a top side, a bottom side, a left side and a right side, where the top side is opposite to the bottom side, the left side is opposite to the right side, the top side is connected to one end of the left side and one side of the right side, and the bottom side is connected to the other end of the left side and the other end of the right side.

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 generally disposed at the bottom of the display device, and has a shape and size corresponding to those of the display device. When applied to the field of televisions or mobile terminals, the backlight module generally takes a rectangular shape.

The embodiment of the utility model provides an in backlight unit adopt straight following formula backlight unit for even light that sends in whole light-emitting surface provides sufficient and the even light that distributes of luminance for display panel, so that display panel can normally show the image.

Fig. 2 is a schematic cross-sectional view of a backlight module according to an embodiment of the present invention.

Referring to fig. 2, the backlight assembly includes: a back plate 11, a lamp panel 12, a diffuser plate 13, a diffuser plate holder 14, an optical film 15, and a reflector 16.

The back plate 11 is located at the bottom of the backlight module and has supporting and bearing functions. The back plate 11 is typically a rectangular structure, the shape of which is adapted to the shape of the display device when applied to a contoured display device. The back panel 11 includes a top side, a bottom side, a left side, and a right side. Wherein the antenna side is opposite to the ground side, the left side is opposite to the right side, the antenna side is connected with one end of the left side and one side of the right side respectively, and the ground side is connected with the other end of the left side and the other end of the right side respectively.

The material of the back plate 11 is aluminum, iron, aluminum alloy or iron alloy. The back plate 11 is used to fix edge positions of the lamp panel 12, the diffuser plate 13, the optical film 14 and other components, and the back plate 11 also plays a role in dissipating heat of the lamp panel 12.

In the embodiment of the present invention, the backlight module is a direct type backlight module, and the lamp panel 12 is adopted as the backlight source. The lamp panel 12 is located above the back panel 11.

In general, the lamp panel 12 may be square or rectangular in shape as a whole. The lamp panel 12 includes a plurality of light sources, and the circuit board is too big and can cause the problems of serious expansion and contraction of the board, low precision of the bonding pad, and the like, so the size of the lamp panel 12 is not too big. When applied to a large-sized display device, a plurality of lamp panels 12 are usually spliced together to provide backlight.

According to display device 'S size can set up a plurality of lamp plates 12, for example, 75 inches' S TV can adopt and provide jointly being shaded through the concatenation mode between 2 x 8 lamp plates 12, and at this moment, provide jointly through the concatenation mode between the lamp plate 12 and be shaded, and at this moment, there is concatenation seam S between two adjacent lamp plates 12.

Diffuser plate 13 is located the light-emitting side of lamp plate 12, has certain distance with lamp plate 12, and the shape of diffuser plate 13 is the same with the holistic shape of lamp plate 12. The diffuser plate 13 may be provided in a rectangular or square shape in a general case.

The diffuser 13 functions to scatter incident light, making the light passing through the diffuser 13 more uniform. The diffusion plate 13 is provided with scattering particle materials, and light incident to 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 uniformization is achieved.

The diffusion plate 13 has higher haze and more uniform effect, and can be processed by an extrusion process, and the material of the diffusion plate 13 is generally selected from at least one of polymethyl methacrylate (PMMA), Polycarbonate (PC), polystyrene material (PS), and polypropylene (PP).

The diffusion plate 13 may further include a quantum dot material disposed therein to form a quantum dot diffusion plate, the quantum dot material includes a red quantum dot material and a green quantum dot material, the red quantum dot material emits red light under excitation of blue light, the green quantum dot material emits green light under excitation of blue light, and the red light, the green light and the transmitted blue light emitted by excitation are mixed to form a white light emission.

The quantum dot diffusion plate is not provided with a quantum dot film in the subsequent process of manufacturing the backlight module, so that the cost is reduced, and the display device is lighter and thinner.

The diffuser 13 is required to cover all areas where the lamp panels 12 are located, and has a relatively large size, so that the diffuser is prone to collapse and warping deformation, which deteriorates the optical characteristics of the backlight module, and even damages the light source, and therefore, a diffuser bracket 14 is usually disposed between the lamp panels 12 and the diffuser 13 for supporting the diffuser 13.

The material used for the diffuser plate holder 14 is generally polycarbonate PC.

In practical implementation, the diffuser plate holder 14 may be in the shape of a triangle, a trapezoid, a cone, etc., which are simple in shape, and is not limited herein.

The optical film 15 is located the one side that diffuser plate 13 deviates from lamp plate 12, and the whole layer of setting of optical film 15, its shape is the same with the holistic shape of lamp plate 12, can set up to rectangle or square under the normal conditions.

The optical film 15 can make the backlight module suitable for various practical applications.

In the embodiment of the present invention, the light source 122 in the lamp panel 12 may be a blue light micro light emitting diode, and the optical film 15 includes a quantum dot layer or a fluorescent layer.

The quantum dot layer comprises a red quantum dot material and a green quantum dot material, the red quantum dot material emits red light under the excitation of blue light, the green quantum dot material emits green light under the excitation of the blue light, and the red light, the green light and the transmitted blue light which are emitted by excitation are mixed to form white light for emitting.

The fluorescent layer comprises fluorescent materials which are stimulated to emit red light and green light, and the stimulated red light, the green light and the transmitted blue light are mixed into white light to be emitted.

In addition, the optical film 15 may further include a prism sheet, which can change the exit angle of light, thereby changing the viewable angle of the display device.

The optical film 15 may further include a reflective polarizer, which is a brightness enhancement film, and can improve the brightness of the backlight module, improve the utilization efficiency of light, and make the emergent light have polarization property, thereby omitting the use of the polarizer under the liquid crystal display panel.

Specifically, referring to fig. 2, lamp panel 12 specifically includes: circuit board 121, light source 122, reflector layer 123.

The circuit board 121 is located on the back plate 11, and the shape of the circuit board 121 is the same as the overall shape of the lamp panel 12. In general, the circuit board 121 has a plate shape, and has a rectangular or square shape as a whole.

The Circuit Board 121 may be a Printed Circuit Board (PCB), where the PCB includes a substrate and a conductive layer, the conductive layer is deposited on the substrate by electroplating using a conductive material, and a Circuit is formed by etching a Circuit as needed, and the conductive layer may be made of copper.

The substrate of the circuit board 121 may be made of FR4, aluminum base, or glass. Alternatively, the substrate or the substrate base plate of the circuit board 121 may be made of a flexible material to form a flexible display device.

The light source 122 is disposed on the circuit board 121, and the circuit board 121 is used for providing a driving signal for the light source 122. In an embodiment of the present invention, the light source 122 is a light emitting diode, and the light emitting diode is arranged on the circuit board 121 to provide backlight for the display panel.

When the light source 122 is a light emitting diode, the light emitting diode further includes a light emitting chip and a package structure for packaging the light emitting chip, and the light emitting chip is used for emitting light with a set wavelength; the packaging structure is a protection structure arranged on the surface of one side, away from the circuit board, of the light-emitting chip. The packaging structure is used for packaging and protecting the light emitting diode and preventing foreign matters from entering the inside of the light emitting diode. In the embodiment of the present invention, the light emitting diode can adopt a POB patch mode; or, the outer side of the light emitting diode is further provided with a lens for adjusting the outgoing coverage of the light, which is not limited herein.

In another embodiment provided by the present invention, the light source 122 can also be a micro light emitting diode, and the electrode of the micro light emitting diode is soldered on the exposed pad of the circuit board 121 to realize the electrical connection therebetween.

The micro light emitting diode is different from a common light emitting diode, and is specifically referred to as a micro light emitting diode chip. Because the size of the micro light-emitting diode is very small, the dynamic light-emitting control of the backlight module is favorably controlled to smaller partitions, more refined dynamic control can be realized, and the dynamic contrast of the display device is improved. In the embodiment of the present invention, the size of the micro light emitting diode is below 500 μm.

The lamp panel 12 may include only one color of micro light emitting diode, and may also include multiple colors of micro light emitting diodes, which is not limited herein.

When light source 122 is a micro light emitting diode, lamp panel 12 further includes a packaging layer, and the packaging layer is a protective adhesive covering a side surface of the micro light emitting diode away from the circuit board. The packaging layer is used for packaging and protecting the micro light-emitting diode and preventing foreign matters from entering the interior of the micro light-emitting diode. In the embodiment of the present invention, the encapsulation layer can be made of transparent colloid material, such as silica gel, modified silica gel or epoxy resin with better permeability.

The reflective layer 123 is located on the surface of the circuit board 121 near the light source 122, and is an insulating protective layer, which has a function of protecting the circuit board. In the embodiment of the present invention, the reflective layer 123 is coated on the surface of the circuit board 121 by a material having reflective property, and the position of the pad for the welding light source 122 is exposed by etching or the like to form the opening for exposing the light source 122.

In the embodiment of the present invention, the material used for the reflective layer 123 is white ink with a property of reflecting light, and the reflectivity of the white ink is greater than or equal to 85%, which is not limited herein.

Among the prior art, in order to prevent that the too big panel that leads to of printed circuit board size harmomegathus is serious, the not high scheduling problem of pad precision, the mode that adopts a plurality of lamp plates 12 concatenations provides backlight usually, but splice seam S can appear during the lamp plate concatenation, leads to the light of splice seam S position department can't be recycled by the reflexion and the dark line appears for backlight unit display area luminance is inhomogeneous, influences display device' S display effect.

In view of this, as shown in fig. 2 and fig. 3, the direct-type backlight module provided by the present invention further includes a reflector 16, and the reflector 16 includes a plurality of dots D, and the reflector 16 is attached above the splicing seam S of the two lamp panels 12, so that the light at the splicing seam S is reflected again after passing through the reflector 13; the problem of dark line appears in the unable recycled of being reflected again of light of splice seam S position department to the existence of a plurality of net points D has been avoided leading to splice seam position department than other display area of lamp plate to be bright partially behind the attached reflector plate, reduces splice area and other display area differences in brightness of lamp plate, realizes backlight unit' S display brightness homogenization.

The reflector 16 is located above the splice S of the two lamp panels 12, and is usually configured as a strip. The reflective sheet 16 includes a substrate made of PET, and a reflective layer formed by spraying a mixture having high reflectivity on the substrate.

The difference between the reflectivity of the reflective layer 123 and the reflectivity of the reflective sheet 16 is smaller than a preset value, so that the problem of uneven brightness of the display device caused by too large difference between the reflectivity of the reflective sheet 16 and the reflectivity of the reflective layer 123 is avoided.

Fig. 4 is a top view of a reflector according to an embodiment of the present invention.

In a practical mode, refer to fig. 4, the embodiment of the utility model provides a plurality of sites are a plurality of even regular trompils 161, and the existence of trompil 161 has been avoided leading to splice seam S position department to be lighter than other display area of lamp plate 12 behind the attached reflector plate 16, reduces splice area and the regional difference of luminance of other display area of lamp plate, realizes backlight unit' S demonstration luminance homogenization.

In another kind of mode that can carry out, refer to fig. 5, the embodiment of the utility model provides a plurality of sites are a plurality of even regular light absorption points 162, and the existence of light absorption points 162 has been avoided leading to splice seam S position department to be lighter than other display area of lamp plate 12 behind the attached reflector plate 16 partially, reduces the regional difference with other display area luminance of lamp plate of splice seam, realizes backlight unit' S demonstration luminance homogenization.

The embodiment of the utility model provides a material that light absorption point 162 adopted is black printing ink.

According to the concept of the first utility model, the backlight module comprises a reflector plate, and the reflector plate is attached above the splicing seam position of the two lamp panels, so that the light at the splicing seam position is reflected and utilized again after passing through the reflector plate; the reflector plate comprises a plurality of net points, the existence of the plurality of net points avoids that the position of the splicing seam is brighter than other display areas of the lamp plate after the reflector plate is attached, the brightness difference between the splicing seam area and other display areas of the lamp plate is reduced, and the display brightness homogenization of the backlight module is realized.

According to the second utility model concept, the reflectivity of reflector layer and the difference of the reflectivity of reflector plate are less than the default, avoid the reflector plate to be too big than the reflectivity difference of reflector layer, the inhomogeneous problem of display device luminance that leads to.

According to the third utility model discloses think about, a plurality of sites are a plurality of even regular trompils, and the existence of trompil has been avoided leading to splice seam position department to be brighter than other display area of lamp plate behind the attached reflector plate partially, reduces splice seam region and other display area luminance differences of lamp plate, realizes backlight unit's demonstration luminance homogenization.

According to the fourth utility model discloses think about, a plurality of sites are a plurality of even regular light spot that absorbs, and the existence of light spot has been avoided leading to splice seam position department to be lighter than other display area of lamp plate behind the attached reflector plate partially, reduces the splice area and the difference of other display area luminance of lamp plate, realizes backlight unit's demonstration luminance homogenization.

According to a fifth novel concept, the light absorbing dots are made of black ink.

According to a sixth aspect of the present invention, the reflective layer is made of a white ink having a property of reflecting light, and the reflectance of the white ink is greater than or equal to 85%.

According to the seventh utility model, the light source can be a micro light emitting diode, the electrode of the micro light emitting diode is welded on the exposed bonding pad of the circuit board, so as to realize the electrical connection between the micro light emitting diode and the bonding pad, and the micro light emitting diode is different from the common light emitting diode and specifically refers to a micro light emitting diode chip. Because the size of the micro light-emitting diode is very small, the dynamic light-emitting control of the backlight module is favorably controlled to smaller partitions, more refined dynamic control can be realized, and the dynamic contrast of the display device is improved.

According to the eighth inventive concept, the size of the micro light emitting diode is less than 500 μm.

While the 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. It is therefore intended that the appended claims be interpreted as including the preferred embodiment and all such alterations and modifications as fall within the scope of the invention.

It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. A display device, characterized in that, comprising:

Display panel for image display;

a backlight module, located on the light incident side of the display panel, for providing backlight;

The backlight module includes:

The back plate has the function of supporting and bearing;

a plurality of lamp panels, located on one side of the back panel; each of the lamp panels is spliced with each other, and a splicing seam exists between two adjacent lamp panels;

a reflective sheet, located on the side of the lamp panel away from the back panel, and arranged at the splicing seam between two adjacent lamp panels; the reflective sheet includes a plurality of dots, and the reflectivity of the dots It is smaller than the reflectivity of the area of the reflective sheet other than the dots.

2 . The display device of claim 1 , wherein the dots are openings. 3 .

3 . The display device of claim 1 , wherein the dots are light absorbing dots. 4 .

4 . The display device according to claim 3 , wherein the material used for the light absorbing points is black ink. 5 .

5. The display device according to any one of claims 1-4, wherein the light panel comprises:

a circuit board, located on the backplane, for providing driving signals;

a light source, located on the circuit board;

a reflective layer, located on the side of the circuit board close to the light source; the reflective layer includes an opening for exposing the light source;

The difference between the reflectivity of the reflective layer and the reflectivity of the reflective sheet is smaller than a preset value.

6 . The display device of claim 5 , wherein the reflectivity of the light-reflecting layer is greater than or equal to 85%. 7 .

7 . The display device according to claim 6 , wherein the material used for the light-reflecting layer is white ink. 8 .

8 . The display device according to claim 5 , wherein the light source is a miniature light emitting diode; the size of the miniature light emitting diode is less than 500 μm; 9 .

The light board further includes: an encapsulation layer, located on the surface of the micro light emitting diode on the side away from the circuit board, for encapsulating and protecting the micro light emitting diode.

9. The display device of claim 5, wherein the light source is a light emitting diode;

The light emitting diode includes a light emitting chip and a package structure surrounding the light emitting chip.

10. The display device according to any one of claims 1-4, wherein the backlight module further comprises:

a diffuser plate, located on the side of the light plate away from the back plate, the diffuser plate and the light plate are separated by a set distance;

a diffuser plate bracket, located between the light plate and the diffuser plate, for supporting the diffuser plate;

The optical film is located on the side of the diffuser plate away from the light plate.