Display module capable of preventing light leakage and energy storage device

Abstract

The utility model relates to the technical field of display modules, and discloses a light leakage prevention display module and an energy storage device, which comprise a shell, a display screen, a shading sheet, a light guide plate and a PCB (Printed Circuit Board) which are arranged in sequence, the PCB is fixedly connected with the shell, a pin part located on the outer side of the light guide plate extends on the display screen, and the display screen is inserted into the PCB through the pin part and is electrically connected with the PCB; the light shielding sheet comprises a light guide area and a light shielding area arranged on the periphery of the light guide area in a surrounding mode, the light shielding area comprises a light shielding part extending in the direction of the pin part, and the light shielding part is bent and arranged between the pin part and the side face of the light guide plate; the energy storage device comprises an energy storage equipment host and the display module, and the display module is electrically connected with the energy storage equipment host; the display module mainly solves the technical problem that light rays refracted at the pin part of the display screen cause light leakage of the side edge of the display module.

Description

Technical Field

[0001] The utility model relates to the technical field of display modules, and in particular to a light leakage-proof display module and an energy storage device. Background Art

[0002] With the rapid development of new energy technologies, energy storage devices have become increasingly popular. End users are increasingly demanding of the user experience and the lack of defects during use. Consequently, manufacturers have developed numerous design improvements to address microscopic defects in their products. For example, the display module of an energy storage device typically uses an LCD display. Currently, the following methods are used to address light leakage along the side edges of the display module:

[0003] 1. Improve light leakage around the edge of the display by reducing the inner size of the shock-absorbing foam between the housing and the LCD display;

[0004] 2. When assembling the LCD display, add an extra thin PC sheet between the LCD display and the light guide plate (located between the LCD display and the backlight, its function is to convert the point light source emitted by the backlight into a surface light source, thereby improving the uniformity of light entering the LCD display, thereby enhancing the brightness and contrast of the LCD display, making the LCD display clearer and brighter) to improve light leakage at the edge of the display module;

[0005] 3. In the early stage of processing the light guide plate, a layer of aluminum film with the same size as the light guide plate is attached to the side of the light guide plate facing the LCD display to improve the light leakage at the edge of the display module;

[0006] When the LCD display is connected to the PCB board behind it using a low-cost pin method (used to drive the LCD display and control the LCD display to display the desired image), none of the above three methods can block the light refracted outward from the LCD display pins, resulting in the display module still having undesirable defects such as light leakage at the side edges.

[0007] Therefore, there is a need to improve the existing technology. Utility Model Content

[0008] The utility model provides a light leakage-proof display module and an energy storage device, which mainly solve the technical problem that light leakage at the side edge of the display module is caused by light refracted at the pin portion of the display screen.

[0009] To achieve the above objectives, the present invention provides the following technical solutions:

[0010] A light leakage-proof display module comprises a housing, a display screen, a light shielding sheet, a light guide plate and a PCB board which are arranged in sequence;

[0011] The PCB is fixedly connected to the housing, and a pin portion extends from the display screen and is located outside the light guide plate. The display screen is plugged into the PCB via the pin portion and is electrically connected to the PCB.

[0012] The light shielding sheet includes a light guide area and a light shielding area arranged around the light guide area. The light shielding area includes a light shielding portion extending toward the pin portion. The light shielding portion is bent and arranged between the pin portion and the side surface of the light guide plate.

[0013] In one of the technical solutions, a positioning and mounting structure is provided between the light shielding sheet and the light guide plate.

[0014] In one of the technical solutions, the positioning and mounting structure is a positioning notch provided on the light-shielding portion, and the positioning notch is provided in an area of ​​the light-shielding portion that is not directly facing the pin portion. The positioning notch forms a positioning and mounting surface on one side of the light-shielding sheet for aligning flush with the side surface of the light guide plate.

[0015] In one of the technical solutions, the positioning notch is arranged at an end position of the shading portion along the length direction.

[0016] In one of the technical solutions, the display screen has pin portions extending on both opposite sides, and the two pin portions are arranged oppositely on the outside of the light guide plate. The shading area includes two opposite shading portions, one of the shading portions is bent and arranged between the one pin portion and one side surface of the light guide plate, and the other shading portion is bent and arranged between the other pin portion and the other side surface of the light guide plate.

[0017] In one of the technical solutions, the light-shielding sheet is an insulating component with insulating properties.

[0018] In one of the technical solutions, the shading film is a PET black and white film, which has a white film area and a black film area covering part of the white film area. The black film area is the shading area, and the area on the white film area not covered by the black film area is the light-guiding area.

[0019] In one of the technical solutions, an annular foam is sandwiched between the shell and the display screen, the side of the display screen facing the annular foam is a display area, and the inner circle size of the annular foam is smaller than the display size of the display area.

[0020] In one of the technical solutions, a dust-proof lens is provided on the side of the housing facing away from the display screen.

[0021] The present application also provides an energy storage device, comprising an energy storage device host and the above-mentioned light leakage-proof display module, wherein the display module is electrically connected to the energy storage device host.

[0022] Compared with the prior art, the light leakage-proof display module provided by the present invention has at least the following beneficial effects:

[0023] This solution adopts a structure in which a light-shielding sheet is provided between the display screen and the light guide plate, and the light-shielding sheet is specifically designed to include a light-guiding area and a light-shielding area. The light-guiding area allows light to pass normally and enter the display screen. This solution uses the light-shielding area surrounding the light-guiding area to solve the problem of light leakage at the outer edge of the light guide plate. In particular, this solution extends the original light-shielding area on the light-shielding sheet for the structure in which the display screen is plugged into the PCB board through the pin portion, and forms a light-shielding portion bent between the pin portion and the side of the light guide plate. The light-shielding portion can block the outer side surface of the light guide plate adjacent to the pin portion, so that light will hardly hit the pin portion after passing through the light guide plate, thereby solving the current technical problem of light leakage at the side edge of the display module due to refraction of the pin portion. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0025] Figure 1 A schematic structural diagram of a light leakage-proof display module provided in an embodiment of the present application;

[0026] Figure 2 An exploded view of the structure of a light leakage-proof display module provided in an embodiment of the present application;

[0027] Figure 3 A cross-sectional view of a light leakage-proof display module provided in an embodiment of the present application;

[0028] Figure 4 for Figure 3 A partial enlarged view of point A in the middle;

[0029] Figure 5 for Figure 3 A partial enlarged view of point B in the middle;

[0030] Figure 6 This is a front view of the light guide plate provided in an embodiment of the present application.

[0031] Reference numerals:

[0032] 1. Housing; 2. Display screen; 21. Pin portion; 3. Shading sheet; 31. Light-guiding area; 32. Shading area; 321. Shading portion; 322. Positioning notch; 323. Positioning mounting surface; 4. Light guide plate; 5. PCB board; 6. Annular foam; 7. Dust-proof lens. DETAILED DESCRIPTION

[0033] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application more clearly understood, this application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0034] It should be noted that when an element is referred to as being “fixed on” or “disposed on” another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or indirectly connected to the other element.

[0035] It should be understood that the terms, "upper", "lower", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0036] In addition, in the description of the present application, “a plurality of” means two or more, unless otherwise clearly and specifically defined.

[0037] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention is further described in detail below with reference to the accompanying drawings and embodiments.

[0038] Please also refer to Figures 1 to 6The present invention provides a light leakage-proof display module, which mainly includes a housing 1, a display screen 2, a light shielding sheet 3, a light guide plate 4, and a PCB board 5, which are arranged in sequence. The PCB board 5 is fixedly connected to the housing 1 by screws. The display screen 2 is preferably an LCD display screen. A pin portion 21 extends from the display screen 2 and is located outside the light guide plate 4. The display screen 2 is electrically connected to the PCB board 5 by plugging the pin portion 21 into the PCB board 5. The method of electrically connecting the display screen 2 and the PCB board 5 via the pin portion 21 has the advantage of low cost. The PCB board 5 is used to drive the display screen 2 to display the desired image according to the required electrical signal. The backlight source for providing light to the display screen 2 can also be integrated on this PCB board 5. The light guide plate 4 is located between the display screen 2 and the backlight source. Its function is to convert the point light source emitted by the backlight source into a surface light source, thereby improving the uniformity of light entering the display screen 2, thereby enhancing the brightness and contrast of the LCD display screen 2, and making the display effect of the LCD display screen 2 clearer and brighter.

[0039] The light shielding plate 3 includes a light guide area 31 and a light shielding area 32 surrounding the light guide area 31. The light guide area 31 allows light to pass normally and enter the display screen 2. This solution uses the light shielding area 32 surrounding the light guide area 31 to solve the problem of light leakage to the outer edge after being emitted from the light guide plate 4. Specifically, this solution further designs the light shielding area 32 to include a light shielding portion 321 extending in the direction of the pin portion 21. Figure 2 Only Figure 6 The shading portion 321 shown is in an unfolded, unbent state. During actual assembly, the shading portion 321 needs to be bent and bent between the pin portion 21 and the outer side surface of the light guide plate 4. In other words, this solution is aimed at the structure in which the display screen 2 is plugged into the PCB board 5 through the pin portion 21. The original shading area 32 on the shading sheet 3 is extended and a shading portion 321 is formed that is bent between the pin portion 21 and the side surface of the light guide plate 4. The shading portion 321 can block the outer side surface of the light guide plate 4 adjacent to the pin portion 21, so that the light will hardly hit the pin portion 21 after passing through the light guide plate 4, thereby solving the current technical problem of light leakage at the side edge of the display module due to refraction by the pin portion 21.

[0040] Please also refer to Figures 2 to 6The display screen 2 has pins 21 extending from opposite sides. These pins 21 are positioned opposite each other on the outside of the light guide plate 4. Correspondingly, the light shielding region 32 includes two opposing light shielding portions 321 in the vertical direction. The top light shielding portion 321 is bent and positioned between the top pin 21 and the side surface of the top of the light guide plate 4, while the bottom light shielding portion 321 is bent and positioned between the bottom pin 21 and the other side surface of the bottom of the light guide plate 4. This solution can simultaneously address the technical issue of light leakage along the side edges of the display module caused by refraction from both pins 21.

[0041] In this embodiment, a positioning and mounting structure is provided between the light shielding sheet 3 and the light guide plate 4. By providing the positioning and mounting structure, the light shielding sheet 3 can be accurately installed at the specified position of the light guide plate 4, thereby facilitating the accurate bending of the light shielding portion 321 between the pin portion 21 and the side of the light guide plate 4, thereby solving the problem of inaccurate bending width of the light shielding portion 321 due to insufficient assembly accuracy of the light shielding sheet 3. If the bending width of the light shielding portion 321 is too large, the light shielding portion 321 may interfere with the PCB board 5 behind it. If the bending width of the light shielding portion 321 is too small, the light shielding portion 321 may fail to effectively cover the side of the light guide plate 4, thereby causing the pin portion 21 to still receive more light and refract the light and cause side light leakage. Optionally, the positioning and mounting structure of the present embodiment is specifically a positioning notch 322 provided on the light-shielding portion 321. Of course, this positioning notch 322 needs to be provided in an area of ​​the light-shielding portion 321 that is not directly opposite the pin portion 21. Preferably, the positioning notch 322 is provided at the end position of the light-shielding portion 321 along the length direction. This positioning notch 322 forms a positioning mounting surface 323 on one side of the light-shielding sheet 3. During installation, this positioning mounting surface 323 can be aligned flush with an outer side surface on the light guide plate 4 adjacent to the pin portion 21, so that the light-shielding sheet 3 can be quickly assembled on the light guide plate 4 with high precision.

[0042] In this embodiment, the light shielding sheet 3 is preferably an insulating member with insulating properties. Because the light shielding sheet 3 is insulating, even if the light shielding sheet 3 contacts the pin portion 21, it will not cause a short circuit on the display screen 2. The light shielding sheet 3 is further preferably a PET black and white film. The black and white film is a white high-density PET film (thickness 0.025-0.5mm optional), one side of which is coated with a black nano-technology-grade coating. After the white PET is coated with black, the coated side becomes black, while the other side without the coating remains white, hence the name black and white film. In other words, the PET black and white film has a white film area and a black film area that partially covers the white film area. The black film area is understood to be the aforementioned light shielding area 32, and the area on the white film area not covered by the black film area is understood to be the aforementioned light-guiding area 31. PET films have the advantages of high light transmittance and low haze, which can ensure a clear and bright display effect on the LCD display screen 2, reduce light scattering, and enhance the visual experience.

[0043] In this embodiment, an annular foam 6 is sandwiched between the shell 1 and the display screen 2. The side of the display screen 2 facing the annular foam 6 is the display area. The inner circle size of the annular foam 6 is smaller than the display size of the display area, so that the annular foam 6 can be sandwiched between the shell 1 and the display screen 2. In addition to preventing the display screen 2 from leaking light to the outer edge, this annular foam 6 also plays a shock-absorbing role. The annular foam 6 of appropriate size can effectively solve the problem of discoloration of the display screen 2 caused by force, and reduce the risk of poor display of the display screen 2.

[0044] In this embodiment, a dustproof lens 7 is further provided on the side of the housing 1 facing away from the display screen 2 . The dustproof lens 7 can block dust from entering the display screen 2 and prevent the display screen 2 from being scratched, thereby reducing the risk of poor appearance of the display screen 2 .

[0045] In summary, this solution addresses the issue of light leakage from the side edges of the display module by employing a PET light shielding sheet 3 and extending the light shielding region 32 of the light shielding sheet 3 to include a light shielding portion 321 that shields the pin portion 21. This eliminates the need for an additional PC sheet to shield the outer surface of the light guide plate 4 facing the display screen 2, thereby reducing material and assembly costs. Furthermore, addressing the issue of light leakage from the side edges of the display module eliminates the need to reduce the inner size of the annular foam 6 used for shock absorption, thereby reducing the adverse effect on the display module's appearance caused by an undersized inner ring of the annular foam 6. Furthermore, the PET light shielding sheet 3 employed in this solution, due to its insulating properties, prevents short circuits caused by the light shielding sheet 3 contacting the pin portion 21 of the display screen 2.

[0046] This solution also provides an energy storage device, which includes an energy storage device host and the above-mentioned display module. The energy storage device host is mainly used to store electrical energy. The display module is electrically connected to the energy storage device host. The display module can be used to display the current status information and current data of the energy storage device host.

[0047] The above is merely a preferred embodiment of the present invention and only specifically describes the technical principles of the present invention. These descriptions are intended only to explain the principles of the present invention and should not be construed in any way as limiting the scope of protection of the present invention. Based on the explanations herein, any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention, as well as other specific embodiments of the present invention that can be imagined by those skilled in the art without inventive effort, shall be included within the scope of protection of the present invention.

Claims

1. A light leakage-proof display module, characterized in that: It includes a housing, a display screen, a light shielding sheet, a light guide plate and a PCB board which are arranged in sequence; The PCB is fixedly connected to the housing, and a pin portion extends from the display screen and is located outside the light guide plate. The display screen is plugged into the PCB via the pin portion and is electrically connected to the PCB. The light shielding sheet includes a light guide area and a light shielding area arranged around the light guide area. The light shielding area includes a light shielding portion extending toward the pin portion. The light shielding portion is bent and arranged between the pin portion and the side surface of the light guide plate.

2. The light leakage preventing display module according to claim 1, wherein: A positioning and mounting structure is provided between the light shielding sheet and the light guide plate.

3. The light leakage preventing display module according to claim 2, wherein: The positioning and mounting structure is a positioning notch arranged on the shading portion, and the positioning notch is arranged in an area of ​​the shading portion that is not directly opposite the pin portion. The positioning notch enables one side of the shading sheet to form a positioning and mounting surface for flush alignment with the side surface of the light guide plate.

4. The light leakage preventing display module according to claim 3, wherein: The positioning notch is arranged at an end position of the light shielding portion along the length direction.

5. The light leakage preventing display module according to claim 1, wherein: The display screen has pin portions extending on both opposite sides, and the two pin portions are arranged oppositely on the outside of the light guide plate. The shading area includes two opposite shading portions, one of the shading portions is bent and arranged between the one pin portion and one side surface of the light guide plate, and the other shading portion is bent and arranged between the other pin portion and the other side surface of the light guide plate.

6. The light leakage preventing display module according to claim 1, wherein: The light shielding sheet is an insulating member having insulating properties.

7. The light leakage preventing display module according to claim 6, wherein: The shading sheet is a PET black and white film, which has a white film area and a black film area covering part of the white film area. The black film area is the shading area, and the area on the white film area not covered by the black film area is the light guiding area.

8. The light leakage preventing display module according to any one of claims 1 to 7, wherein: An annular foam is sandwiched between the shell and the display screen. The side of the display screen facing the annular foam is a display area. The inner circle size of the annular foam is smaller than the display size of the display area.

9. The light leakage preventing display module according to any one of claims 1 to 7, characterized in that: A dustproof lens is provided on a side of the housing facing away from the display screen.

10. An energy storage device, characterized in that: It comprises an energy storage device host and the light leakage-proof display module according to any one of claims 1 to 9, wherein the display module is electrically connected to the energy storage device host.

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