Display device

Abstract

The display device provided by the embodiment of the utility model comprises a display panel which is configured to display an image; the display panel comprises a glass substrate and a polaroid. The backlight module is located on the light incident side of the display panel and is configured to provide backlight; the backlight module comprises an optical film; wherein the polaroid is located between the optical film and the glass substrate; the orthographic projection of the polaroid on the glass substrate is at least partially located in the range of the orthographic projection of the optical film on the glass substrate; the backlight module further comprises a segment difference compensation layer, and the segment difference compensation layer is configured to supplement the segment difference between the optical film and the polaroid. The orthographic projection of the segment difference compensation layer on the glass substrate is not overlapped with the orthographic projection of the polaroid on the glass substrate, and the segment difference compensation layer is arranged around the polaroid. If the edge of the optical film is bent, the segment difference between the optical film and the polaroid is supplemented through the segment difference compensation layer, so that the edge of the optical film is prevented from being in a bent stress state, the optical film is ensured not to be separated or layered, and the display effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of display, and particularly relates to a display device. Background Art

[0002] With the development of electronic technology, liquid crystal display devices have now been widely used in electronic products with growth potential such as monitors, laptop computers, digital cameras, and projectors. Usually, a liquid crystal display device includes a liquid crystal display panel and a backlight module. The liquid crystal display panel is composed of two glass substrates sandwiching a liquid crystal layer, and the liquid crystal display panel also has a polarizer; among them, since the liquid crystal display panel itself does not emit light, a uniform light source system needs to be provided for it through the backlight module, and the backlight module includes optical films and the like.

[0003] Among them, the optical film needs to be bonded to the polarizer through an optical adhesive. Since the optical film is larger than the polarizer, there is a step difference between the optical film and the polarizer after bonding, resulting in the edge of the optical film being in a bent stress state all the time, and then the optical film is detached or delaminated, affecting the display effect of the display device. Summary of the Utility Model

[0004] The display device provided by the embodiment of the utility model includes:

[0005] A display panel configured for image display; the display panel includes: a glass substrate and a polarizer;

[0006] A backlight module located on the light incident side of the display panel and configured to provide backlight; the backlight module includes an optical film;

[0007] Wherein, the polarizer is located between the optical film and the glass substrate; at least part of the orthographic projection of the polarizer on the glass substrate is within the range of the orthographic projection of the optical film on the glass substrate;

[0008] The backlight module further includes a step difference compensation layer configured to compensate for the step difference between the optical film and the polarizer; the orthographic projection of the step difference compensation layer on the glass substrate does not overlap with the orthographic projection of the polarizer on the glass substrate, and the step difference compensation layer is arranged around the polarizer.

[0009] In some embodiments of the utility model, the thickness difference between the step difference compensation layer and the polarizer is less than a first threshold.

[0010] In some embodiments of the utility model, there is a gap between the step difference compensation layer and the edge of the polarizer, and the gap is configured to protect the polarizer.

[0011] In some embodiments of the present utility model, the overlapping area exists between the orthographic projection of the step difference compensation layer on the glass substrate and the orthographic projection of the optical film on the glass substrate.

[0012] In some embodiments of the present utility model, the backlight module further includes: an adhesive layer; the adhesive layer is disposed between the optical film and the polarizer, and the adhesive layer is configured to bond and fix the optical film and the polarizer.

[0013] In some embodiments of the present utility model, the orthographic projection of the adhesive layer on the glass substrate overlaps with the orthographic projection of the optical film on the glass substrate.

[0014] In some embodiments of the present utility model, the step difference compensation layer is a release film of the adhesive layer.

[0015] In some embodiments of the present utility model, the step difference compensation layer is provided with a hollowed-out area, and the hollowed-out area is configured to expose the adhesive layer; the orthographic projection of the polarizer on the glass substrate is within the range of the orthographic projection of the hollowed-out area on the glass substrate.

[0016] In some embodiments of the present utility model, a protective film is disposed on a side of the optical film facing away from the glass substrate, and the protective film is configured to protect the optical film.

[0017] In some embodiments of the present utility model, the optical film includes: a first prism layer and a second prism layer which are stacked in sequence; the second prism layer is located on a side close to the glass substrate, and the first prism layer is located on a side close to the backlight module; the prism lines of the first prism layer are orthogonal to the prism lines of the second prism layer.

[0018] The display device provided by the embodiments of the present utility model includes: a display panel configured for image display; the display panel includes: a glass substrate and a polarizer; a backlight module located on the light incident side of the display panel and configured to provide backlight; the backlight module includes an optical film; wherein, the polarizer is located between the optical film and the glass substrate; at least part of the orthographic projection of the polarizer on the glass substrate is within the range of the orthographic projection of the optical film on the glass substrate; the backlight module further includes a step difference compensation layer configured to compensate for the step difference between the optical film and the polarizer; the orthographic projection of the step difference compensation layer on the glass substrate does not overlap with the orthographic projection of the polarizer on the glass substrate, and the step difference compensation layer is disposed around the polarizer. Then, the step difference between the optical film and the polarizer is compensated by the step difference compensation layer, so as to avoid the edge of the optical film being in a bent stress state, and further ensure that the optical film does not show detachment or delamination phenomena, thereby improving the display effect. Description of the Drawings

[0019] Figure 1One of the schematic cross-sectional structures of a display device in the prior art;

[0020] Figure 2 Another schematic cross-sectional structure of a display device in the prior art;

[0021] Figure 3 One of the schematic cross-sectional structures of the display device provided by an embodiment of the present invention;

[0022] Figure 4 One of the schematic top views of the display device provided by an embodiment of the present invention;

[0023] Figure 5 Another schematic cross-sectional structure of the display device provided by an embodiment of the present invention;

[0024] Figure 6 Another schematic top view of the display device provided by an embodiment of the present invention;

[0025] Figure 7 Another schematic cross-sectional structure of the display device provided by an embodiment of the present invention;

[0026] Figure 8 Another schematic top view of the display device provided by an embodiment of the present invention;

[0027] Figure 9 Another schematic cross-sectional structure of the display device provided by an embodiment of the present invention;

[0028] Figure 10 Another schematic cross-sectional structure of the display device provided by an embodiment of the present invention;

[0029] Figure 11 Another schematic top view of the display device provided by an embodiment of the present invention;

[0030] Figure 12 Another schematic top view of the display device provided by an embodiment of the present invention. Detailed implementation manners

[0031] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are some but not all of the embodiments of the present invention. And, without conflict, the embodiments in the present invention and the features in the embodiments may be combined with each other. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0032] Unless otherwise defined, the technical terms or scientific terms used in this utility model shall have the ordinary meanings understood by those with ordinary skills in the field to which this utility model belongs. The "first", "second" and similar words used in this utility model do not denote any order, quantity or importance, but are only used to distinguish different components. Words such as "including" or "comprising" mean that the elements or objects appearing before this word cover the elements or objects listed after this word and their equivalents, without excluding other elements or objects. Words such as "connected" or "coupled" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

[0033] It should be noted that the sizes and shapes of the various figures in the drawings do not reflect the true proportions, and the purpose is only to schematically illustrate the content of this utility model. And the same or similar reference numerals throughout denote the same or similar elements or elements having the same or similar functions.

[0034] Figure 1 It is one of the schematic cross-sectional structures of a display device in the prior art. Figure 2 It is another schematic cross-sectional structure of a display device in the prior art.

[0035] Liquid Crystal Displays (LCDs) have many advantages such as power saving, no radiation, and soft pictures, and are widely used in the display field.

[0036] With the development of electronic technology, liquid crystal display devices are now widely used in electronic products with growth potential such as monitors, laptop computers, digital cameras, and projectors. Usually, a liquid crystal display device includes a liquid crystal display panel and a backlight module.

[0037] As Figure 1 shown, the liquid crystal display panel is composed of two glass substrates 10 and a liquid crystal layer 11 located between the two glass substrates 10, and the liquid crystal display panel also has a polarizer 12; among them, since the liquid crystal display panel itself does not emit light, a uniform light source system needs to be provided for it through the backlight module, and the backlight module includes optical films 21, etc.

[0038] Among them, as Figure 2 shown, the optical film 21 needs to be adhered to the polarizer 12 through an optical adhesive OCA. Since the optical film 21 is larger than the polarizer 12, there is a step difference between the optical film 21 and the polarizer 12 after adhesion, resulting in the edge of the optical film 21 being in a bent and stressed state all the time, and then the optical film 21 detaching or delaminating, affecting the display effect of the display device.

[0039] Based on the above problems, an embodiment of the present invention provides a display device. Figure 3 It is one of the schematic cross-sectional structures of the display device provided by the embodiment of the present invention.

[0040] The display device provided by the embodiment of the present invention, as Figure 3 shown, includes a display panel 1 and a backlight module 2.

[0041] The display panel 1 is configured for image display; wherein, the display panel 1 can be a liquid crystal display panel. As Figure 1 shown, the display panel 1 is composed of two glass substrates 10 and a liquid crystal layer 11 located between the two glass substrates 10. And as Figure 3 shown, the display panel 1 further includes a polarizer 12.

[0042] The backlight module 2 is located on the light incident side of the display panel 1 and is configured to provide backlight. As Figure 3 shown, the backlight module 2 includes an optical film 21. The function of the optical film 21 is to improve the optical uniformity of the backlight module and at the same time improve the overall brightness of the backlight module.

[0043] Among them, the polarizer 12 is located between the optical film 21 and the glass substrate 10; the orthographic projection of the polarizer 12 on the glass substrate 10 is at least partially within the range of the orthographic projection of the optical film 21 on the glass substrate 10. Such a setting is to reserve a part of the non-display area, so that some other required structures can be set in the non-display area.

[0044] The backlight module 2 further includes a step compensation layer 22, and the step compensation layer 22 is configured to compensate for the step between the optical film 21 and the polarizer 12. As Figure 3 shown, the step between the optical film and the polarizer is compensated by the step compensation layer, so as to avoid the optical film from detaching or delaminating, and further improve the display effect.

[0045] Figure 4 It is one of the schematic top views of the display device provided by the embodiment of the present invention.

[0046] As Figure 4 shown, the orthographic projection of the step compensation layer 22 on the glass substrate 10 does not overlap with the orthographic projection of the polarizer 12 on the glass substrate 10, and the step compensation layer 22 is arranged around the polarizer 12. Such a setting can further avoid that there is no step between the edge of any side of the optical film and the polarizer, so as to avoid the edge of any side of the optical film being in a bent stress state, and further ensure that the optical film will not appear detachment or delamination phenomena, and further improve the display effect.

[0047] In the embodiment of the present utility model, by providing a step difference compensation layer on the same layer as the polarizer, the step difference between the optical film and the polarizer can be compensated by the step difference compensation layer, and by making the orthographic projection of the step difference compensation layer on the glass substrate surround the orthographic projection of the polarizer on the glass substrate, the edge of any side of the optical film can be prevented from being in a bending stress state, thereby ensuring that the optical film will not exhibit detachment or delamination phenomena and improving the display effect.

[0048] Figure 5 It is the second schematic cross-sectional structure diagram of the display device provided by the embodiment of the present utility model.

[0049] In some embodiments, as Figure 5 shown, the thickness difference between the step difference compensation layer 22 and the polarizer 12 is less than the first threshold. By setting the step difference compensation layer in this way, the step difference between the optical film and the polarizer can be perfectly compensated, thereby preventing the optical film from bending towards the glass substrate and preventing the optical film from bending away from the glass substrate, ensuring that the optical film will not have detachment or delamination problems.

[0050] Exemplarily, the first threshold can be 0 or a value close to 0. When the first threshold is 0, the thickness of the step difference compensation layer 22 is exactly the same as the thickness of the polarizer 12. In this way, the step difference compensation layer 22 can compensate the step difference between the optical film and the polarizer to the greatest extent and achieve the most perfect step difference compensation effect.

[0051] However, due to process errors, the thickness of the step difference compensation layer 22 may not be exactly the same as the thickness of the polarizer 12. Therefore, the first threshold can be a value close to 0, such as -0.01, -0.02, 0.01, 0.02, etc. However, the first threshold cannot be too much greater than 0 or less than 0, otherwise the step difference between the optical film and the polarizer cannot be compensated.

[0052] In some embodiments, as Figure 4 shown, there is a gap between the edge of the step difference compensation layer 22 and the polarizer 12, and the gap is configured to protect the polarizer 12. By setting it in this way, some space can be reserved during the subsequent assembly process to prevent the step difference compensation layer from squeezing the polarizer, thereby avoiding affecting the polarizer.

[0053] Figure 6 It is the second schematic top view structure diagram of the display device provided by the embodiment of the present utility model.

[0054] In some embodiments, as Figure 6 shown, there is an overlapping area between the orthographic projection of the step difference compensation layer 22 on the glass substrate 100 and the orthographic projection of the optical film 21 on the glass substrate 100. Only by setting the step difference compensation layer in this way can the step difference between the optical film and the polarizer be compensated, otherwise the step difference compensation layer cannot function.

[0055] Figure 7 The third schematic diagram of the cross-sectional structure of the display device provided in the embodiment of the utility model.

[0056] In some embodiments, Figure 3 and Figure 7 As shown, the backlight module 2 further includes: an adhesive layer 23; the adhesive layer 23 is disposed between the optical film 21 and the polarizer 12, and the adhesive layer 23 is configured to bond and fix the optical film 21 to the polarizer 12. That is, the optical film 21 and the polarizer 12 are bonded and fixed to each other through the adhesive layer 23. In this embodiment, the adhesive layer is provided to ensure that the optical film can be more firmly attached to the polarizer.

[0057] In some embodiments, the orthographic projection of the adhesive layer 23 on the glass substrate 10 overlaps with the orthographic projection of the optical film 21 on the glass substrate 10. That is, by making the area of ​​the adhesive layer close to the area of ​​the optical film, it can be ensured that the optical film can be completely attached to the display panel, further preventing the optical film from detaching.

[0058] Exemplarily, the orthographic projection of the adhesive layer 23 on the glass substrate 10 completely overlaps with the orthographic projection of the optical film 21 on the glass substrate 10. That is, by making the area of ​​the adhesive layer the same as the area of ​​the optical film, such a design can ensure that the optical film is fully attached to the display panel to the greatest extent, and better prevent the optical film from detaching.

[0059] In some embodiments, the step compensation layer 22 is a release film of the adhesive layer 23. That is, the step compensation layer and the adhesive layer are integrated, and such a design can make up the step difference between the optical film and the polarizer through the release film of the adhesive layer itself without increasing the cost in advance, thereby avoiding the problem of separation or delamination of the optical film and improving the reliability of the display device.

[0060] Exemplarily, the material of the adhesive layer may be optical adhesive, and the surface of the optical adhesive has a PET release film.

[0061] Figure 8 This is a third schematic diagram of the top view structure of the display device provided in an embodiment of the utility model.

[0062] In some embodiments, Figure 8As shown, the step compensation layer 22 is provided with a hollowed-out area 220, and the hollowed-out area 220 is configured to expose the adhesive layer 23; the optical film is adhered to the polarizer through the hollowed-out area that exposes the adhesive layer. The orthographic projection of the polarizer 12 on the glass substrate 100 is within the range of the orthographic projection of the hollowed-out area 220 on the glass substrate 100. In this way, the entire polarizer can be evenly adhered to the optical film, and the area of the polarizer is smaller than the area of the hollowed-out area, which can prevent the step compensation layer from overlapping with the polarizer, thereby avoiding the step compensation layer from affecting or squeezing the polarizer and ensuring the display effect.

[0063] Exemplarily, the orthographic projection of the polarizer 12 on the glass substrate 100 can be completely within the range of the orthographic projection of the hollowed-out area 220 on the glass substrate 100. In this way, it can be maximally avoided that the polarizer cannot be completely adhered to the optical film, and further avoid the delamination or detachment of the optical film caused by insufficient adhesion.

[0064] Figure 9 This is the fourth cross-sectional structure schematic diagram of the display device provided by the embodiment of the present invention.

[0065] In some embodiments, as Figure 9 shown, a protective film 210 is provided on the side of the optical film 21 facing away from the glass substrate 10, and the protective film 210 is configured to protect the optical film 21. By providing the protective film, it can be ensured that the optical film will not have scratches, abrasions, etc., ensuring the performance of the optical film and avoiding affecting the display effect.

[0066] Figure 10 This is the fifth cross-sectional structure schematic diagram of the display device provided by the embodiment of the present invention.

[0067] In some embodiments, as Figure 10 shown, the optical film 20 includes: a first prism layer 211 and a second prism layer 212 that are sequentially stacked; the first prism layer 211 is located on the side close to the glass substrate 10, and the first prism layer 211 is located on the side close to the backlight module 2; the ridge lines of the first prism layer 211 are orthogonal to the ridge lines of the second prism layer 212. By utilizing the prism structures of the first prism layer and the first prism layer, through optical principles such as refraction, total reflection, and light accumulation, the light in all directions can be concentrated towards the central viewing angle, thereby improving the brightness of the display device and controlling the viewing angle, and further achieving an energy-saving effect.

[0068] In some embodiments, the optical film 20 further includes a polarizing layer located on the side of the second prism layer facing away from the first prism layer. The function of the polarizing layer is to control the direction and transmission of light. The polarizing layer selectively allows light with a specific polarization direction to pass through while blocking or attenuating light with other polarization directions. It should be noted that the polarization direction of the polarizing layer is parallel to that of the polarizer. This can more precisely screen out light with a specific polarization direction.

[0069] Exemplarily, as Figure 3 shown, the backlight module 2 further includes a backplane 20, a light source 24, a reflector 25, and a diffusion plate 26. Among them, the backplane 20 can be located at the bottom of the backlight module 2. The backplane 20 is used to support the light source 24 and the reflector 25, and to support and fix the edges of components such as the diffusion plate 26.

[0070] The material of the backplane 20 can be aluminum, iron, aluminum alloy, or iron alloy, etc. The backplane 20 can also play a role in heat dissipation.

[0071] Figure 11 This is the fifth top view structural schematic diagram of the display device provided by the embodiment of the present invention. Figure 12 This is the sixth top view structural schematic diagram of the display device provided by the embodiment of the present invention.

[0072] As Figure 3 shown, the light source 24 is located on the backplane 20.

[0073] Exemplarily, as Figure 11 shown, the light source 24 can adopt a plurality of parallel and spaced lamp bars. The lamp bar usually adopts a strip-shaped circuit board 241, and the strip-shaped circuit board 241 extends along the first direction F1. A row of light-emitting devices 242 are connected to the strip-shaped circuit board 241. Among them, the plurality of lamp bars are spaced apart along the first direction F1 or the second direction F2 on the backplane 20. That is, by arranging the light sources evenly on the backplane, the light sources can more evenly illuminate each area of the display panel, ensuring the display effect. Among them, the lamp bars can be fixed on the backplane 20 through connectors such as screws, or the lamp bars can also be pasted on the backplane 20.

[0074] Exemplarily, as Figure 12 shown, the light source 24 can also adopt a lamp board. The lamp board includes a circuit board 241 and light-emitting devices 242 arranged in an array on the circuit board 241. Among them, the light-emitting devices 242 on the lamp board are evenly spaced in sequence along the first direction F1 and the second direction F2 of the circuit board 241. That is, by arranging the light sources evenly on the backplane, the light sources can more evenly illuminate each area of the display panel, ensuring the display effect. Usually, the whole lamp board can be square or rectangular. When applied to a special-shaped display device, its shape and size adapt to the shape and size of the display device.

[0075] Exemplarily, multiple driving ICs can be integrated on the lamp board or lamp strip, and the light source is divided into multiple dimming regions to achieve regional dimming. In a backlight module applying regional dimming technology, the light-emitting device can be an LED (Light Emitting Diode), a Mini LED (Mini-Light Emitting Diode), a Micro LED (Micro Light Emitting Diode), etc. For example, Mini LED is adopted because Mini LED has the advantages of small size and high brightness. More light-emitting devices can be arranged on the lamp board or lamp strip of the same area, providing higher backlight brightness and more delicate zoning control effect. When applied to different display devices and usage requirements, other types of light-emitting devices can also be adopted, which are not limited herein.

[0076] As Figure 3 shown in the figure, the reflector 25 is located on the side of the light source 24 away from the back plate 20. The reflector 25 is used to reflect the light emitted downward by the light-emitting device toward the light-emitting side, thereby improving the utilization rate of light.

[0077] Exemplarily, after the light emitted by the light source 24 reaches the position where the diffusion plate 26 is located, part of the light continues to move forward in the direction of the emitted light after being refracted by the diffusion plate 26, and the other part of the light is incident on the surface of the reflector 25 after being reflected by the surface of the diffusion plate 26 at the diffusion plate 26. The reflector 25 reflects this part of the light and emits it again in the direction of the diffusion plate 26. Through repeated reflection and refraction, the utilization rate of light can be improved, and the light can be mixed more evenly.

[0078] Among them, the reflector 25 is provided with a plurality of avoidance holes, and the plurality of avoidance holes are arranged in one-to-one correspondence with the plurality of light-emitting devices for completely exposing the light-emitting devices. To prevent the reflector from affecting the emitted light provided by the light source from being completely emitted.

[0079] As Figure 3 shown in the figure, the diffusion plate 26 is located on the light-emitting side of the light source 24. There is a certain distance between the diffusion plate 26 and the light source 24. The diffusion plate 26 can diffuse the incident light, so that the emitted light of the light source 24 is fully mixed, and the light emitted after passing through the diffusion plate 26 is more uniform.

[0080] Exemplarily, a scattering particle material is provided in the diffusion plate. When light is incident on the scattering particle material, refraction and reflection will continuously occur, so as to achieve the effect of scattering the light and realizing the function of light homogenization. The thickness of the diffusion plate is usually set to 0.5 mm - 3 mm. The greater the thickness of the diffusion plate, the greater the haze and the better the uniform effect.

[0081] For example, the diffusion plate can be processed by extrusion process, and the material used for the diffusion plate can include at least one of polymethyl methacrylate PMMA, polycarbonate PC, polystyrene PS, and polypropylene PP.

[0082] It should be noted that the display device may further include a diffusion plate bracket. Figure 3 The diffuser plate bracket is located between the back plate and the diffuser plate and is used to fix and support the diffuser plate.

[0083] like Figure 3 As shown, the display device further includes: a first glue frame 31 and a second glue frame 32. The display panel 1 is placed on the first glue frame 31, and the display panel 1 and the backlight module 2 are combined into a display device through the second glue frame 32. The first glue frame 31 can strengthen the structural strength of the backlight module 2 and place the display panel 1. The first glue frame 31 is provided with a protruding structure, and the back plate 20 is provided with a concave structure. The protruding structure of the first glue frame 31 is engaged with the concave structure of the back plate 20, thereby fixing the display panel 1 and the backlight module 2 together. The second glue frame 32 further fixes the display panel 1 and the backlight module 2, further ensuring the structural stability of the display device.

[0084] The process of laminating and assembling the optical film and the display panel in the embodiment of the utility model specifically includes:

[0085] Step 1: Clean the optical film and check its appearance. This can avoid stains on the optical film and avoid the situation of optical film damage in the subsequent assembly process, thus saving costs.

[0086] Step 2: Lay one side of the optical film on the protective film. This ensures that the side of the optical film that is not in contact with the display panel will not be scratched or worn, thereby ensuring the performance of the optical film and avoiding affecting the display effect.

[0087] Step 3: Lay the side of the optical film without the protective film on the side of the adhesive layer without the release film, wherein the adhesive layer itself has a release film.

[0088] Step 4: Laser cut the side of the adhesive layer with the release film, keep the release film around the edge of the adhesive layer, and remove the release film in the middle of the adhesive layer. The laser cutting process energy can be adjusted to improve the cutting speed, ensure that the release film in the adhesive layer can be completely cut off, and try to avoid cutting the optical film.

[0089] Step 5: Bond the adhesive layer that has been bonded to the optical film to the polarizer in the display panel, and bond the middle part of the adhesive layer without the release film to the polarizer.

[0090] Step 6: Perform degassing treatment on the whole to further improve the display effect.

[0091] In specific implementation, in the embodiments of the present invention, the display device may be: any product or component with a display function such as a mobile phone, a tablet computer, a television, a monitor, a laptop computer, a digital photo frame, a navigator, etc. Other essential components of the display device should be understood by those of ordinary skill in the art and will not be elaborated herein, nor should they be regarded as a limitation to the present invention.

[0092] Although the preferred embodiments of the present invention have been described, those skilled in the art can make additional changes and modifications once they know the basic creative concept. Therefore, the appended claims are intended to be construed as including the preferred embodiments and all changes and modifications falling within the scope of the present invention.

[0093] Obviously, those skilled in the art can make various changes and modifications to the embodiments of the present invention without departing from the spirit and scope of the embodiments of the present invention. Thus, if these modifications and variations of the embodiments of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention also intends to include these modifications and variations.

Claims

1. A display device, characterized in that: include: A display panel configured to display an image; The display panel includes: a glass substrate and a polarizer; A backlight module, located at the light incident side of the display panel, configured to provide backlight; the backlight module includes an optical film; Wherein, the polarizer is located between the optical film and the glass substrate; the orthographic projection of the polarizer on the glass substrate is at least partially located within the range of the orthographic projection of the optical film on the glass substrate; The backlight module also includes a step compensation layer, which is configured to make up for the step difference between the optical film and the polarizer; the orthographic projection of the step compensation layer on the glass substrate does not overlap with the orthographic projection of the polarizer on the glass substrate, and the step compensation layer is arranged around the polarizer.

2. The display device according to claim 1, wherein: A difference between a thickness of the step compensation layer and a thickness of the polarizer is less than a first threshold.

3. The display device according to claim 1, wherein: There is a gap between the step compensation layer and the edge of the polarizer, and the gap is configured to protect the polarizer.

4. The display device according to claim 1, wherein: An orthographic projection of the step compensation layer on the glass substrate and an orthographic projection of the optical film on the glass substrate have an overlapping area.

5. The display device according to any one of claims 1 to 4, characterized in that: The backlight module further includes: an adhesive layer; the adhesive layer is disposed between the optical film and the polarizer, and the adhesive layer is configured to adhere and fix the optical film and the polarizer.

6. The display device according to claim 5, characterized in that The orthographic projection of the adhesive layer on the glass substrate overlaps with the orthographic projection of the optical film on the glass substrate.

7. The display device according to claim 5, characterized in that The step compensation layer is a release film of the adhesive layer.

8. The display device according to claim 7, characterized in that: The step compensation layer is provided with a hollow area, and the hollow area is configured to expose the adhesive layer; the orthographic projection of the polarizer on the glass substrate is located within the range of the orthographic projection of the hollow area on the glass substrate.

9. The display device according to any one of claims 1 to 4, characterized in that: A protective film is disposed on a side of the optical film away from the glass substrate, and the protective film is configured to protect the optical film.

10. The display device according to any one of claims 1 to 4, characterized in that: The optical film comprises: a first prism layer and a second prism layer stacked in sequence; the second prism layer is located on a side close to the glass substrate, and the first prism layer is located on a side close to the backlight module; the ridges of the first prism layer and the ridges of the second prism layer are orthogonal to each other.

Images