Display module

Abstract

The present application provides a display module, which can make the light emitted by the light source assembly distributed in the edge area of ​​the display area, thereby enhancing the light emission of the edge area and improving the light effect of the edge area. The display module includes a stacked display screen, an optical assembly, and a light source assembly; the display screen includes a display area, and the display area includes a central area and an edge area surrounding the central area; the display module also includes a frame, and the frame is located between the optical assembly and the light source assembly; the frame includes a light incident surface arranged near the light source of the light source assembly, a reflective surface arranged corresponding to the light incident surface, and a light emitting surface arranged near the display screen, the light incident surface is a transparent surface, and the light emitted by the light source assembly enters the frame from the light incident surface, and after being reflected by the reflective surface in the frame, it is emitted from the light emitting surface to the edge area of ​​the display area.

Description

Technical Field

[0001] This application relates to the field of display technology, and more particularly to a display module. Background Art

[0002] Currently, dual-display panels, as high-end monitor screens, possess characteristics such as high display brightness, high image uniformity, and high contrast. The dual-display panel consists of two LCD panels (a main display panel and a secondary display panel). The main display panel has a built-in color filter to provide visual stimulation; the secondary display panel has no color filter and is used for precise backlight control. While providing ultra-high display brightness, the dual-display panel module boasts an ultra-high (over one million) contrast ratio and superior dark detail display capabilities.

[0003] However, while dual display panels offer superior display performance, they also present significant design challenges. The use of separate liquid crystals to control light transmission in each panel results in lower overall transmittance. Since professional monitors require higher brightness (HDR1000), direct-lit starry backlighting is necessary to provide sufficient backlight brightness.

[0004] like Figure 1 As shown, the display area AA' of the dual display panel 10' includes a central area A1' and an edge area A2', with the edge area A2' surrounding the central area A1'. A lamp plate 31' with a plurality of evenly distributed LED beads 32' is fixed to a back plate 60' as a light source; a diffuser plate 21' is placed on a sub-frame 50' or a support structure, with a spacing space 40' between the diffuser plate 21' and the lamp plate 31', forming a light mixing space; an optical film layer 22' is placed on the diffuser plate 21' to enhance light efficiency and conceal imperfections; the light emitted from the lamp plate 31' passes through the light mixing space (spacing space 40' and diffuser plate 21') and the optical film layer 22' to form a uniform surface light source. The propagation path of the light emitted by the LED beads 32' is shown by the arrow direction in the figure. Compared to side-lit backlighting, direct-lit backlighting can provide a relatively uniform backlight source, but it also suffers from uneven image quality. The cause of this is explained below:

[0005] 1. The light-emitting surface of the LED bead 32' is at a fixed angle (usually the light-emitting surface of the LED bead 32' without a lens is less than 180°). The number of light mixing layers is different at different positions in space. Due to the boundary conditions, the number of light mixing layers in the edge area A2' of the display area AA' is necessarily less than that in the center area A1' of the display area AA'.

[0006] 2. For example Figure 1As shown, due to the small spacing between the backlight LEDs 32', supporting light columns cannot be used, necessitating that the sub-frame 50' or supporting structure have a certain size of support surface. The light from the LEDs 32' positioned at the edge of the light panel 31' is easily reflected or blocked by the sub-frame 50' or supporting structure. Especially in narrow bezel module designs, it is impossible to shield the low luminous efficiency at the edges by blocking the edge area A2', potentially causing the light to fail to fully illuminate the entire display area AA'.

[0007] If the ratio of the luminous efficacy of the edge area to that of the center area in a single-layer display panel is K1, then after passing through a dual-display panel, the ratio of the luminous efficacy of the edge area to that of the center area in the display area becomes K2 (K1>K2). This makes the unevenness in the backlight (especially under solid color images) more easily exposed to the user's view. Specifically, as shown below... Figure 2 As shown, a continuous ring of yellow spots C (represented by black dots) is formed in the edge area A2' of the dual display panel 10', which has a significant impact on display quality.

[0008] Therefore, how to make light fill the entire display area in the design of narrow bezel modules and improve the light effect of the edge area of ​​the display area is a technical problem that urgently needs to be solved in this field. Summary of the Invention

[0009] This application provides a display module that, by setting the specific structure of the frame, enables the light emitted by the light source component to be distributed in the edge area of ​​the display area, thereby enhancing the light output in the edge area, improving the light efficiency in the edge area, and making the light fill the entire display area, thus achieving uniformity of the display in the entire display area.

[0010] According to an embodiment of this application, a display module is provided, the display module including a display screen, an optical component located below the display screen, and a light source component located below the optical component;

[0011] The display screen includes a display area, which includes a central area and an edge area surrounding the central area;

[0012] The display module further includes a frame, which is located between the optical component and the light source component. One end of the frame is disposed along the outer periphery of the light source component, and the other end is disposed along the outer periphery of the optical component. The frame includes a light-incident surface disposed near the light source component, a reflective surface disposed corresponding to the light-incident surface, and a light-emitting surface disposed near the display screen. The light-incident surface is transparent. Light emitted by the light source component enters the frame through the light-incident surface, is reflected by the reflective surface within the frame, and is emitted by the light-emitting surface to the edge area of ​​the display area.

[0013] Optionally, the light-incident surface is a first inclined surface, which gradually extends from one end near the light source assembly to one end near the optical assembly towards the outer periphery of the display module; and / or,

[0014] At least one second inclined surface is provided on the reflective surface, and the second inclined surface gradually extends from one end near the light source component to one end near the optical component towards the outer periphery of the display module.

[0015] Optionally, the light-incident surface is a first inclined plane, and the angle between the first inclined plane and the horizontal plane is 65 degrees to 90 degrees.

[0016] Optionally, at least one second inclined surface is provided on the reflective surface, and the angle between the second inclined surface and the horizontal plane is 55 degrees to 60 degrees.

[0017] Optionally, the outer side of the reflective surface is coated with a reflective coating.

[0018] Optionally, the refractive index of the frame is 1.4 to 1.5.

[0019] Optionally, the frame is made of polycarbonate or polymethyl methacrylate.

[0020] Optionally, the frame includes a first horizontal portion, a second horizontal portion, and a support portion. The support portion is connected to the first horizontal portion, the second horizontal portion, and the support portion. Both the first horizontal portion and the second horizontal portion are parallel to the plane where the display screen is located. The first horizontal portion abuts against the light source assembly, and the second horizontal portion abuts against the optical assembly.

[0021] Optionally, the width of the support portion of the frame is 0.7-1.2 mm.

[0022] Optionally, the frame is a plastic frame.

[0023] The display module of this application, through the specific structure of its frame, enables the light emitted by the light source component to be distributed to the edge area of ​​the display area, thereby enhancing the light output and improving the light efficiency of the edge area, allowing the light to fill the entire display area and achieving uniformity of the display across the entire display area. The frame in this application not only supports the optical components but also effectively gathers the light from the periphery of the light source component, enhancing the light efficiency of the edge area of ​​the display area. Moreover, the frame in this application does not require additional structural components and can be directly molded within the existing mold, saving on usage costs. Attached Figure Description

[0024] Figure 1 This is a partial cross-sectional structural diagram of a display module in the prior art.

[0025] Figure 2 This is a schematic diagram illustrating the display effect of a display module in the existing technology.

[0026] Figure 3 This is a partial cross-sectional structural diagram of a display module according to an exemplary embodiment of this application.

[0027] Figure 4 This is a partial cross-sectional structural diagram of the frame of an exemplary embodiment of this application.

[0028] Figure 5 This is a schematic diagram illustrating the display effect of a display module according to an exemplary embodiment of this application. Detailed Implementation

[0029] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses consistent with some aspects of this application as detailed in the appended claims.

[0030] The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. Unless otherwise defined, the technical or scientific terms used in this application should be understood in their ordinary sense by one of ordinary skill in the art to which this application pertains. The words “a” or “one” and similar terms used in this specification and claims do not indicate a limitation of quantity, but rather indicate the presence of at least one. The words “comprising” or “including” and similar terms mean that the elements or objects preceding “comprising” or “including” encompass the elements or objects listed following “comprising” or “including” and their equivalents, and do not exclude other elements or objects. The words “connected” or “linked” and similar terms are not limited to physical or mechanical connections and can include electrical connections, whether direct or indirect. “A plurality” includes two, equivalent to at least two. The singular forms “a,” “the,” and “the” used in this specification and appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0031] like Figure 3 and Figure 4 As shown, this embodiment provides a display module 1. The display module 1 includes a display screen 10, an optical component 20 located below the display screen 10, and a light source component 30 located below the optical component 20.

[0032] The display screen 10 includes a display area AA and a border area BB surrounding the display area AA. The display area AA includes a central area A1 and an edge area A2 surrounding the central area A1. The display screen 10 includes a main display panel and a sub-display panel along its thickness direction T. The main display panel has a built-in color filter for providing visual stimulation; the sub-display panel has no color filter and is used for fine backlight control.

[0033] The optical component 20 is arranged parallel to the display screen 10. The optical component 20 includes a stacked diffuser plate 21 and an optical film layer 22. The diffuser plate 21 is located between the optical film layer 22 and the light source component 30.

[0034] The light source assembly 30 includes a lamp panel 31 and a plurality of lamp beads 32 evenly distributed on the lamp panel 31.

[0035] In this process, a gap is provided between the optical component 20 and the light source component 30 along the thickness direction T of the display module, that is, a gap space 40 is provided between the diffuser plate 21 and the lamp plate 31, and the diffuser plate 21 and the gap space 40 form a light mixing space.

[0036] The display module 1 also includes a frame 50, which is located between the optical component 20 and the light source component 30. One end of the frame 50 is set along the outer periphery of the light source component 30, and the other end is set along the outer periphery of the optical component 20. The frame 50 is made of transparent material.

[0037] The frame 50 includes a first horizontal portion 51, a second horizontal portion 52, and a support portion 53. The support portion 53 connects the first horizontal portion 51 and the second horizontal portion 52. Both the first horizontal portion 51 and the second horizontal portion 52 are parallel to the plane of the display screen 10. The first horizontal portion 51 abuts against the outer periphery of the light source assembly 30, and the second horizontal portion 52 abuts against the outer periphery of the optical assembly 20. By providing the first horizontal portion 51 to increase the contact area with the light source assembly 30, and similarly, by providing the second horizontal portion 52 to increase the contact area with the optical assembly 20, a better supporting effect can be achieved. The height H of the support portion 53 is equal to the distance between the optical assembly 20 and the light source assembly 30.

[0038] The frame is molded as a single piece, thus eliminating the need for additional processing.

[0039] The support portion 53 includes a light-incident surface 531 near the light source assembly 30, a reflective surface 532 corresponding to the light-incident surface 531, and a light-emitting surface 533 near the display screen 10. Light emitted from the light source assembly 30 enters the support portion 53 through the light-incident surface 531, is reflected by the reflective surface 532 within the support portion 53, and then exits through the light-emitting surface 533 to the edge region A2 of the display area AA. The propagation path of the light emitted from the light source assembly 30 is as follows: Figure 3 The arrows in the image indicate the direction.

[0040] Furthermore, the light emitted by the light source assembly 30 can be emitted from the light-emitting surface 533 to the edge area A2 of the display area AA and the border area BB.

[0041] Specifically, the light-incident surface 531 is a first inclined surface 534, which extends gradually from one end near the light source assembly 30 to one end near the optical assembly 20 towards the outer periphery of the display module 1, i.e. Figure 3 As shown, the light-incident surface 531 is inclined outwards to allow the light emitted by the light source assembly 30 to better enter the frame 50. Alternatively, the light-incident surface 531 is positioned along the thickness direction T of the display module.

[0042] Specifically, the angle α between the first inclined surface 534 (i.e., the light-incident surface 531) and the horizontal plane is 65 degrees to 90 degrees, so that the light emitted by the light source assembly 30 can better enter the support portion 53 of the frame 50. Among them, when the light-incident surface 531 is set along the thickness direction T of the display module, the angle α between the light-incident surface 531 and the horizontal plane is 90 degrees.

[0043] At least one second inclined surface 535 is provided on the reflective surface 532, which gradually extends from one end near the light source assembly 30 to one end near the optical assembly 20 towards the outer periphery of the display module 1, i.e. Figure 3 As shown, the reflective surface 532 is inclined outward so that the light emitted by the light source assembly 30 can be better emitted from the light-emitting surface 533 to the edge area A2 of the display area AA and the frame area BB. Specifically, the angle β between the second inclined surface 535 and the horizontal plane is 55 degrees to 60 degrees, so as to better reflect the light emitted by the light source assembly 30 to the edge area A2 of the display area AA.

[0044] In this embodiment, there are two second inclined surfaces 535, but it is not limited to this. The number of second inclined surfaces 535 can also be one or three, or other values ​​can be obtained. It can be adjusted according to the effect that the display module 1 needs to display.

[0045] The angles α and β formed by the two second inclined planes 535 and the horizontal plane can be the same or different, and both need to be adjusted according to the effect required to be displayed by the display module 1.

[0046] Preferably, the outer side of the reflective surface 532 is coated with a reflective coating 54. The material of the reflective coating 54 may be PET particles (PET stands for Polyethylene terephthalate, commonly known as polyester resin) or other coating materials with good reflective properties.

[0047] Preferably, the refractive index of the frame 50 is 1.4 to 1.5. The frame 50 is a plastic frame. The material of the frame 50 is polycarbonate or polymethyl methacrylate, but is not limited to these; it can also be other transparent materials with a refractive index of 1.4 to 1.5.

[0048] Considering the shrinkage effect during the injection molding process of plastic parts, the width W of the support portion 53 of the frame 50 is 0.7-1.2 mm. However, in applications of display modules 1 with large size and heavy load, the specific value of the width of the support portion 53 may be larger. The height H of the support portion 53 of the frame 50 is 0.4 to 0.5 times the height of the light mixing space.

[0049] like Figure 3 As shown, the working principle of the frame 50 in this embodiment is as follows: the light emitted by the light source component 30 reaches the light incident surface 531 in the direction of the arrow. Part of the light is directly reflected by the light incident surface 531 to the display area AA, and the other part of the light is refracted into the interior of the support part 53. After being reflected by the reflective surface 532, the light emitted from the periphery of the light source component 30 is gathered by the reflective surface 532 and formed direct light. In this way, the light effect area of ​​the light emitted by the light source component 30 can be expanded outward, improving the light effect of the edge area A2 of the display area AA, thereby reducing the problem of yellowing or darkening of the edge area A2 of the display area AA due to insufficient light.

[0050] The display module 1 also includes a back plate 60, a lamp plate 31, and a first horizontal portion 51 of a portion of the frame 50 fixed to the back plate 60. An outer frame 70 is provided on the outer side of the back plate 60. The outer frame 70 includes a first portion 71 and a second portion 72. The first portion 71 is perpendicular to the second portion 72, and the second portion 72 is arranged along the thickness direction of the display module 1. The first portion 71 is located between the display screen 10 and the optical component 20. A bezel 80 is provided on the outer side of the outer frame 70, and the bezel 80 is located on the outer periphery of the display screen 10, corresponding to the bezel area BB of the display screen 10. The bezel 80 is made of metal.

[0051] In this embodiment, the display module 1, through the specific structure of the frame 50, enables the light emitted by the light source component 30 to be distributed in the edge region A2 of the display area AA, thereby enhancing the light output of the edge region A2, improving the light efficiency of the edge region A2, and ensuring that the light covers the entire display area AA, achieving uniformity of display across the entire display area AA. In this embodiment, the frame 50 not only supports the optical component 20 but also effectively gathers the light from the periphery of the light source component 30, enhancing the light efficiency of the edge region A2 of the display area AA. Moreover, in this embodiment, the frame 50 does not require additional structural components and can be directly molded within the existing mold, saving on usage costs.

[0052] The frame 50 in this embodiment is particularly suitable for display modules with narrow bezels. Due to the size limitation of the bezel 80 of the narrow bezel display module 1, the orthographic projection of the frame 50 on the display screen 10 is usually located within the display area AA. In the prior art, the frame 50 is usually made of white polycarbonate (PC) to reduce costs, which will reflect or block the edge light of the light source component 30, thereby affecting the light effect of the edge area A2 of the display area AA. In this embodiment, the frame 50 not only has a supporting function, but also can effectively gather the light from the periphery of the light source component 30 and enhance the light effect of the edge area A2 of the display area AA.

[0053] The display effect of display module 1 in this embodiment is as follows: Figure 5 As shown, it can be seen that in Figure 2 The yellow spot C in the edge area A2' of the dual display panel module in Figure 5 The light effect of the edge area A2 of the display area AA of the display screen 10 has been greatly improved by setting the specific structure of the frame 50 in the display module 1 of this embodiment.

[0054] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A display module, characterized in that: The display module includes a display screen, an optical component located below the display screen, and a light source component located below the optical component; The display screen includes a display area, and the display area includes a central area and an edge area surrounding the central area; The display module also includes a frame, which is integrally formed; the frame is located between the optical assembly and the light source assembly, and one end of the frame is arranged along the outer periphery of the light source assembly, and the other end is arranged along the outer periphery of the optical assembly; the frame includes a light incident surface arranged near the light source of the light source assembly, a reflective surface arranged corresponding to the light incident surface, and a light emitting surface arranged near the display screen, the light incident surface is a transparent surface, and the light emitted by the light source assembly enters the frame from the light incident surface, is reflected by the reflective surface in the frame, and is emitted from the light emitting surface to the edge area of ​​the display area; The light incident surface is a first inclined surface, and the first inclined surface gradually extends from an end close to the light source assembly to an end close to the optical assembly toward an outer peripheral edge of the display module, or the light incident surface is arranged along the thickness direction of the display module; A plurality of second inclined surfaces are arranged on the reflective surface, and the second inclined surfaces gradually extend from an end close to the light source assembly to an end close to the optical assembly toward an outer peripheral edge of the display module.

2. The display module according to claim 1, wherein: The light incident surface is a first inclined surface, and the angle between the first inclined surface and the horizontal plane is 65 degrees to 90 degrees.

3. The display module according to claim 1, wherein: At least one second inclined surface is arranged on the reflecting surface, and the angle between the second inclined surface and the horizontal plane is 55 degrees to 60 degrees.

4. The display module according to any one of claims 1 to 3, characterized in that: The outer side of the reflective surface is coated with a reflective coating.

5. The display module according to any one of claims 1 to 3, characterized in that: The refractive index of the frame is 1.4-1.

5.

6. The display module according to any one of claims 1 to 3, characterized in that: The frame is made of polycarbonate or polymethyl methacrylate.

7. The display module according to any one of claims 1 to 3, characterized in that: The frame includes a first horizontal portion, a second horizontal portion and a supporting portion, the supporting portion is connected between the first horizontal portion and the second horizontal portion, the first horizontal portion and the second horizontal portion are both parallel to the plane where the display screen is located, the first horizontal portion abuts against the light source assembly, and the second horizontal portion abuts against the optical assembly.

8. The display module according to any one of claims 1 to 3, characterized in that: The width of the support portion of the frame is 0.7-1.2 mm.

9. The display module according to any one of claims 1 to 3, characterized in that: The frame is a plastic frame.

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