Active reflective display module

Abstract

The invention relates to the technical field of display modules, and discloses an active reflective display module, comprising a display screen driving circuit board, a reflective display screen electrically connected to the display screen driving circuit board, a surface light source driving circuit board and a surface light source, wherein the surface light source comprises a reflective substrate, a plurality of LED lamp beads and a plurality of reflectors, the display screen driving circuit board and the surface light source driving circuit board are located behind the reflective display screen, the surface light source is located in front of the side of the reflective display screen, a plurality of LED lamp beads are fixed on the reflective substrate at intervals and are electrically connected to the surface light source driving circuit board, each LED lamp bead is located inside a corresponding reflector, a plurality of reflectors are fixed side by side on the reflective substrate, and each reflector is provided with a light outlet facing the reflective display screen, thereby overcoming the defect of the existing active reflective display module that less light in the light beam emitted by each LED lamp bead illuminates the reflective display screen and more light is lost, thereby improving the luminous efficiency of each LED lamp bead and the display performance of the reflective display screen.

Description

Technical Field

[0001] The present invention relates to the technical field of display modules, and in particular to an active reflective display module. Background Art

[0002] Existing reflective display modules are mainly divided into passive reflective display modules and active reflective display modules. The passive reflective display module includes a reflective display screen and a first circuit board with a display screen driving circuit (hereinafter referred to as the first circuit board as the display screen driving circuit board). The display screen driving circuit board is electrically connected to the reflective display screen. The reflective display screen provides a display function under the drive of the display screen driving circuit board and is illuminated by ambient light when providing the display function. In addition to the reflective display screen and the display screen driving circuit board, the active reflective display module also includes a plurality of LED lamp beads and a second circuit board with a surface light source driving circuit (hereinafter referred to as the second circuit board as the surface light source driving circuit board). The surface light source driving circuit board is electrically connected to each LED lamp bead, each LED lamp bead emits a light beam under the drive of the surface light source driving circuit board, and the reflective display screen is illuminated by the light beam when providing the display function. Compared with the passive reflective terminal, the active reflective display module has the ability of autonomous fill light, which enhances the display performance of the active reflective display module in a dark environment.

[0003] However, less light in the light beam emitted by each LED lamp bead illuminates the reflective display screen and more light is lost. The lost light does not illuminate the reflective display screen, resulting in low utilization rate of the above light beam, resulting in low luminous efficiency of each LED lamp bead and poor display performance of the reflective display screen. Summary of the invention

[0004] The present invention aims at the disadvantage that less light in the light beam emitted by each LED lamp bead illuminates the reflective display screen and more light is lost in the existing active reflective display module, and provides an active reflective display module, the active reflective display module comprises a display screen driving circuit board and a reflective display screen electrically connected to the display screen driving circuit board, the reflective display screen comprises a backlight surface and a light-transmitting surface distributed in layers, the display screen driving circuit board is located behind the backlight surface, the active reflective display module also comprises a surface light source driving circuit board located behind the backlight surface and a surface light source located in front of the light-transmitting surface, the surface light source comprises a reflective substrate, a plurality of LED lamp beads and a plurality of reflectors, the plurality of LED lamp beads are fixed on the reflective substrate at intervals and are electrically connected to the surface light source driving circuit board, each of the LED lamp beads is respectively located inside the corresponding reflector, the plurality of reflectors are fixed side by side on the reflective substrate, each of the reflectors is provided with a light outlet, and the light outlet faces the light-transmitting surface.

[0005] The active reflective display module provided by the present invention has the following beneficial effects: the reflective display screen provides a display function under the action of the display screen driving circuit board, each LED lamp bead emits a light beam under the drive of the surface light source driving circuit board, part of the light in the light beam is redirected by a reflective chamber composed of a corresponding reflector and a reflective substrate, the redirected light is emitted from a light outlet to a light-transmitting surface, the light emission range of the light beam is reduced by the reflective chamber, the light in the light beam that plays a role in illuminating the reflective display screen is increased, the light that is lost in the light beam is reduced, the luminous efficiency of each LED lamp bead and the display performance of the reflective display screen are improved, the surface light source is uniformly emitted by a plurality of reflectors that are evenly arranged and distributed on the reflective substrate, and the display screen driving circuit board, the surface light source driving circuit board and the surface light source do not block the light-transmitting surface, thereby ensuring that the surface light source uniformly illuminates the entire reflective display screen.

[0006] On the basis of the above technical solution, the present invention also makes the following improvements:

[0007] Furthermore, a vertical spacing is reserved between each of the LED lamp beads and the light-transmitting surface along a direction perpendicular to the light-transmitting surface, and the vertical spacing is less than or equal to 100 mm.

[0008] The beneficial effect of the above further solution is that the vertical spacing is configured to be no more than 100 mm, thereby avoiding excessive vertical spacing, providing a guarantee for the surface light source to illuminate the entire reflective display screen, and preventing the active reflective display module from being too thick.

[0009] Furthermore, each of the reflectors is a funnel body, the bottom of the funnel body is fixedly connected to the reflective substrate, the top of the funnel body is provided with the light outlet, the spill angle in the light outlet is set to a first acute angle, the plane where the light outlet is located is perpendicular to the central axis of the funnel body, and a second acute angle is set between the central axis of the funnel body and the light-transmitting surface.

[0010] The beneficial effect of the above further scheme is: compared with the spill angle greater than 90 degrees, the first acute angle makes the light outlet have a smaller light outlet range, thereby improving the reflective ability of the reflector, and the second acute angle ensures that the surface light source illuminates the entire reflective display screen.

[0011] Furthermore, the bottom of the funnel body is provided with two locking feet symmetrically distributed along the central axis, and the two locking feet are respectively locked on the reflective substrate.

[0012] The beneficial effect of the above further solution is that the corresponding reflector is detachably fixed on the reflective substrate by two locking feet, which simplifies the fixing structure between the reflectors and facilitates the disassembly and assembly of the reflector.

[0013] Further, the first acute angle is greater than or equal to 10 degrees, the first acute angle is less than or equal to 60 degrees, and the second acute angle is less than or equal to 30 degrees.

[0014] The beneficial effects of the above further scheme are: the first acute angle is set at 10 degrees to 60 degrees, which enhances the compactness of arranging multiple reflectors on the reflective substrate, which is beneficial to reducing the uniformity of light output from the reflectors and the surface light sources; the second acute angle is set to no more than 30 degrees, ensuring that the surface light source evenly illuminates the entire screen of the reflective display.

[0015] Furthermore, the active reflective display module also includes a flat plate, the backlight surface is laminated and fixed on the front of the flat plate, and the display screen driving circuit board and the surface light source driving circuit board are arranged behind the back of the flat plate.

[0016] The beneficial effect of the above further solution is that the flat panel supports the reflective display screen behind the backlight surface to prevent the reflective display screen from being worn and deformed, which helps to enhance the display performance of the reflective display screen.

[0017] Furthermore, the active reflective display module also includes a back shell and a front cover, the front cover is sealed on the open end of the back shell, the back shell and the front cover form a shell having a chamber, and the display screen driving circuit board, the reflective display screen, the surface light source driving circuit board, the surface light source and the flat plate are arranged in the chamber of the shell; the inner surface of the back shell is fixedly connected to the display screen driving circuit board, the surface light source driving circuit board and the flat plate respectively; the front cover includes a light-transmitting portion and a light-shielding portion surrounding the light-transmitting portion, the light-transmitting portion and the light-transmitting surface are distributed in layers relative to each other, and the back side of the light-shielding portion is fixedly connected to the reflective substrate.

[0018] The beneficial effect of the above further scheme is: the display screen driver circuit board, reflective display screen, surface light source driver circuit board, surface light source and flat panel are fixed by the shell with a cavity formed by the back shell and the front cover, which simplifies the structure and assembly process of the active reflective display module, ensures that the light-transmitting part located directly in front of the light-transmitting surface can emit light, and avoids light leakage from the shading part.

[0019] Furthermore, the front of the tablet is detachably fixedly connected to the backlight surface, and the inner surface of the back shell is detachably fixedly connected to the display screen driving circuit board, the surface light source driving circuit board and the tablet respectively.

[0020] The beneficial effects of the above further solution are: it is convenient to disassemble and assemble the reflective display screen on the flat panel, and it is convenient to disassemble and assemble the display screen driving circuit board, the surface light source driving circuit board and the flat panel on the back shell.

[0021] Furthermore, the surface light source also includes a support base, and the support base is fixedly connected to the reflective substrate and the back surface of the shading portion respectively.

[0022] The beneficial effect of the above further solution is that an installation space is provided between the reflective substrate and the back side of the light shielding portion by the support seat, so as to reduce the difficulty of fixing the reflective substrate and the back side of the light shielding portion.

[0023] Furthermore, the support seat includes a first fixed wall and a second fixed wall fixedly connected to the first fixed wall, a third acute angle is provided between the second fixed wall and the first fixed wall, the first fixed wall is detachably fixedly connected to the reflective substrate, and the second fixed wall is detachably fixedly connected to the back side of the shading portion.

[0024] The beneficial effect of the above further solution is that the back side of the shading portion is detachably fixedly connected to the reflective substrate through the support seat, which reduces the difficulty of fixing the back side of the shading portion to the reflective substrate and facilitates the disassembly and assembly of the surface light source on the front cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 An exploded schematic diagram of the active reflective display module provided in Example 1;

[0026] Figure 2 For the corresponding Figure 1 A schematic top view of a reflective display screen and a surface light source;

[0027] Figure 3 For the corresponding Figure 1 A cross-sectional schematic diagram of an active reflective display module;

[0028] Figure 4 For the corresponding Figure 2 A front view schematic diagram of a surface light source in FIG.

[0029] Figure 5 For the corresponding Figure 4 A cross-sectional schematic diagram of a surface light source in FIG.

[0030] Figure 6 For the corresponding Figure 4 A schematic diagram of a reflector on a surface light source viewed from above;

[0031] Figure 7 An exploded schematic diagram of an active reflective display module provided in Example 2;

[0032] Figure 8 An exploded schematic diagram of an active reflective display module provided in Example 3;

[0033] Fig. 9 For the corresponding Figure 8A top view schematic diagram of a reflective display screen and two surface light sources;

[0034] Fig.10 For the corresponding Figure 8 A cross-sectional schematic diagram of an active reflective display module;

[0035] Fig.11 A three-dimensional schematic diagram of a support base on a surface light source provided in Example 3;

[0036] Fig.12 A front view schematic diagram of a reflective display screen and two surface light sources provided in the fourth embodiment;

[0037] Fig.13 This is a front view schematic diagram of the reflective display screen and four surface light sources provided in the fifth embodiment.

[0038] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0039] 1-display screen driver circuit board, 2-reflective display screen, 3-surface light source driver circuit board, 4-surface light source, 5-flat plate, 6-back shell, 7-front cover, 21-backlight surface, 22-translucent surface, 41-reflective substrate, 42-LED lamp beads, 43-reflector, 44-support seat, 71-translucent part, 72-shading part, 431-positioning foot, 441-first fixed wall, 442-second fixed wall. DETAILED DESCRIPTION

[0040] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention but not to limit the scope of the present invention. The figure numbers of the same components remain consistent.

[0041] Embodiment 1

[0042] See also Figure 1 The active reflective display module includes a display screen driving circuit board 1, a reflective display screen 2, a surface light source driving circuit board 3 and a surface light source 4. The display screen driving circuit board 1 is electrically connected to the reflective display screen 2. The reflective display screen 2 provides a display function under the drive of the display screen driving circuit board 1. Along the thickness direction of the reflective display screen 2, the display screen driving circuit board 1 and the surface light source driving circuit board 3 are both arranged behind the reflective display screen 2, so that the reflective display screen 2, the display screen driving circuit board 1 and the surface light source driving circuit board 3 are arranged in layers. Compared with the reflective display screen 2 and the display screen driving circuit board 1 or / and the surface light source driving circuit board 3 being arranged in partitions, the width or length of the active reflective display module is reduced, and the active reflective display module is narrowed.

[0043] See also Figure 1 and Figure 2, a surface light source 4 is arranged in front of one side of the reflective display screen 2. Compared with the surface light source 4 being arranged directly in front of the reflective display screen 2, in order to prevent the surface light source 4 from blocking the reflective display screen 2, the reflective display screen 2 can adopt an electronic ink screen or a reflective LCD display screen.

[0044] It should be pointed out that the specific structure of the display driver circuit board 1 and the specific structure of the reflective display screen 2, as well as the specific structure of the electrical connection between the display driver circuit board 1 and the reflective display screen 2, all belong to the prior art and will not be described in detail here.

[0045] See also Figures 1 to 3 The reflective display screen 2 includes a backlight surface 21 and a translucent surface 22 which are distributed in layers. The translucent surface 22 is located in front of the backlight surface 21. The display screen driving circuit board 1 and the surface light source driving circuit board 3 are both arranged behind the backlight surface 21. A surface light source 4 is arranged in front of the translucent surface 22. This avoids the display screen driving circuit board 1, the surface light source driving circuit board 3 and the surface light source 4 blocking the translucent surface 22, and helps the translucent surface 22 to be fully illuminated by the surface light source 4.

[0046] Taking the electronic ink screen as an example, the electronic ink screen includes a glass plate, an electronic ink layer and a shading substrate. The electronic ink layer is arranged between the glass plate and the shading substrate. The side of the glass plate away from the electronic ink layer is a light-transmitting surface 22, so that the light-transmitting surface 22 has the function of light input and light output. The side of the shading substrate away from the electronic ink layer is a backlight surface 21, so that the backlight surface 21 has the function of reflecting or absorbing light.

[0047] See also Figure 3 and Figure 4 The surface light source 4 includes a reflective substrate 41, a plurality of LED lamp beads 42 and a plurality of reflectors 43. The plurality of LED lamp beads 42 are fixed on the reflective substrate 41 at intervals, and each LED lamp bead 42 is located inside a corresponding reflector 43. The plurality of reflectors 43 are fixed side by side on the reflective substrate 41, ensuring that the plurality of reflectors 43 are evenly arranged and distributed on the reflective substrate 41. Each reflector 43 is provided with a light outlet, which faces the light-transmitting surface 22. The corresponding LED lamp beads 42 are hidden in a reflective cavity formed by each reflector 43 and the reflective substrate 41, thereby avoiding exposure of each LED lamp bead 42 on the reflective substrate 41, reducing the number of LED lamp beads 42, and improving the utilization rate of the reflective substrate 41.

[0048] Specifically, the reflective substrate 41 may be a PCB board coated with a reflective material, the reflective cover 43 may be a metal cover coated with a reflective material, and the reflective material may be paint or a reflective tape.

[0049] A plurality of LED lamp beads 42 are electrically connected to the surface light source driving circuit board 3. Each LED lamp bead 42 emits a light beam when driven by the surface light source driving circuit board 3. Part of the light in the light beam is redirected by the corresponding reflective chamber, and the redirected light is emitted from the light outlet to the light-transmitting surface 22. Compared with each LED lamp bead 42 being exposed on the reflective substrate 41, the reflective chamber reduces the light emission range of the aforementioned light beam, increases the light in the aforementioned light beam that plays a role in illuminating the reflective display screen 2, and reduces the light lost in the aforementioned light beam. This overcomes the defect of the existing active reflective display module that less light in the light beam emitted by each LED lamp bead 42 illuminates the reflective display screen 2 and more light is lost, thereby improving the luminous efficiency of each LED lamp bead 42 and the display performance of the reflective display screen 2.

[0050] The surface light source emits light uniformly by means of multiple reflectors 43 evenly arranged and distributed on the reflective substrate 41, and the display screen driving circuit board 1, the surface light source driving circuit board 3 and the surface light source 4 do not block the light-transmitting surface 22, ensuring that the surface light source 4 uniformly illuminates the entire screen of the reflective display screen 2.

[0051] It should be pointed out that the specific structure of the surface light source driving circuit board 3 and the specific structure of each LED lamp bead 42, as well as the specific structure of the electrical connection between multiple LED lamp beads 42 and the surface light source driving circuit board 3 all belong to the prior art and will not be repeated here.

[0052] See also Figure 3 A vertical spacing D is reserved between each LED lamp bead 42 and the light-transmitting surface 22 in a direction perpendicular to the light-transmitting surface 22. The vertical spacing D is less than or equal to 100 mm. The vertical distance D can be the thickness from the center of each LED lamp bead 42 to the horizontal plane where the light-transmitting surface 22 is located along the thickness direction of the reflective display screen 2. For example, the vertical spacing D is equal to 0 mm or 60 mm or 100 mm. Avoiding the vertical spacing D from being too large provides a guarantee for the surface light source 4 to illuminate the entire screen of the reflective display screen 2 to prevent the active reflective display module from being too thick.

[0053] See also Figure 3 , Figure 4 and Figure 5 Each reflector 43 is a funnel body, and the funnel body is a trapezoidal structure extending from the bottom to the top along the central axis. The trapezoidal structure can be a quadrangular prism structure or a cylindrical structure. The bottom of the funnel body is fixedly connected to the reflective substrate 41. The bottom of the funnel body is provided with a receiving port, and the corresponding LED lamp beads 42 are provided in the receiving port. The top of the funnel body is provided with a light outlet, and the light outlet is larger than the receiving port.

[0054] See also Figure 3 , Figure 4 and Figure 5The spill angle in the light outlet is configured as a first acute angle α. Compared with the spill angle in the light outlet being greater than 90 degrees, the light outlet has a smaller light outlet range through the first acute angle α, thereby improving the reflective ability of the reflector 43. The plane where the light outlet is located is perpendicular to the central axis of the funnel body. A second acute angle β is configured between the central axis of the funnel body and the light-transmitting surface 22. The second acute angle β ensures that the surface light source 4 illuminates the entire screen of the reflective display screen 2.

[0055] See also Figure 3 The central axis of the funnel body is shown by a dotted oblique line, and the two light rays emitted from the light outlet are respectively shown by rays with arrows, and the two rays are distributed on both sides of the dotted oblique line. The angle between the two rays is taken as an example of the overflow angle in the light outlet, wherein one ray is parallel to the first side of the funnel body, and the other ray is parallel to the second side of the funnel body. The overflow angle in the light outlet can be the angle between the straight line where the first side is located and the straight line where the second side is located as another example.

[0056] See also Figure 4 and Figure 5 The bottom of the funnel body is provided with two locking feet 431 which are symmetrically distributed along the central axis. The two locking feet 431 are respectively connected to the reflective substrate 41. The corresponding reflector 43 is detachably fixed to the reflective substrate 41 through the two locking feet 431, which simplifies the fixing structure between the reflectors 43 and facilitates the disassembly and assembly of the reflector 43.

[0057] The first acute angle α is greater than or equal to 10 degrees, and the first acute angle α is less than or equal to 60 degrees, for example: the first acute angle α is equal to 10 degrees or 35 degrees or 60 degrees, which enhances the compactness of the arrangement of multiple reflectors 43 on the reflective substrate 41, and is beneficial to reducing the uniformity of the light output of the reflector 43 and the surface light source 4.

[0058] The second acute angle β is less than or equal to 30 degrees, for example, the second acute angle β is equal to 5 degrees, 20 degrees or 30 degrees, which ensures that the surface light source 4 evenly illuminates the entire reflective display screen.

[0059] Embodiment 2

[0060] See also Figures 4 to 7 The active reflective display module also includes a flat panel 5, on the front of which a backlight surface 21 is laminated and fixed, and behind the back of the flat panel 5 a display screen driving circuit board 1 and a surface light source driving circuit board 3 are arranged.

[0061] The side of the flat plate 5 opposite to the backlight surface 21 is the front side, and the side of the flat plate 5 away from the backlight surface 21 is the rear side. The backlight surface 21 can be glued to the front side of the flat plate 5 so that the flat plate 5 supports the reflective display screen 2 behind the backlight surface 21 to prevent the reflective display screen 2 from being worn and deformed, which helps to enhance the display performance of the reflective display screen 2.

[0062] Embodiment 3

[0063] See also Figures 4 to 6 as well as Figures 8 to 10 The active reflective display module also includes a back shell 6 and a front cover 7. The back shell 6 is in a groove shape as a whole. The front cover 7 is sealed on the open end of the back shell 6. The back shell 6 and the front cover 7 form a shell with a chamber. A display screen driving circuit board 1, a reflective display screen 2, a surface light source driving circuit board 3, a surface light source 4 and a flat plate 5 are arranged in the chamber of the shell. The inner surface of the back shell 6 is fixedly connected to the display screen driving circuit board 1, the surface light source driving circuit board 3 and the flat plate 5 respectively. For example, the display screen driving circuit board 1 and the surface light source driving circuit board 3 are arranged in partitions on the inner surface of the back shell 6 and are arranged in layers on the inner surface of the back shell 6 with the flat plate 5, which simplifies the structure and assembly process of the active reflective display module and helps to make full use of the chamber of the shell.

[0064] See also Figure 8 and Fig.10 The front cover 7 includes a light-transmitting portion 71 and a light-shielding portion 72 surrounding the light-transmitting portion 71. The light-shielding portion 72 can be a hollow reflective frame. The light-transmitting portion 71 is a transparent glass plate embedded in the empty area of ​​the reflective frame. The light-transmitting portion 71 and the light-transmitting surface 22 are relatively distributed in layers. The area of ​​the light-transmitting surface 22 does not exceed the area of ​​the light-transmitting portion 71, so that the light-transmitting portion 71 is arranged directly in front of the light-transmitting surface 22. The back side of the light-shielding portion 72 is fixedly connected to the reflective substrate 41, ensuring that the light-transmitting portion 71 located directly in front of the light-transmitting surface 22 emits light and avoids light leakage from the light-shielding portion 71.

[0065] The front of the flat panel 5 is detachably fixedly connected to the backlight surface 21 . For example, the four corners of the backlight surface 21 are fixed to the backlight surface 21 by buckles, so that the reflective display screen 2 can be easily installed and removed from the flat panel 5 .

[0066] The side of the back shell 6 away from the flat plate 5 is the outer surface, and the side of the back shell 6 opposite to the flat plate 5 is the inner surface. The inner surface of the back shell 6 is detachably fixedly connected to the display screen driver circuit board 1, the surface light source driver circuit board 3 and the flat plate 5, for example: the display screen driver circuit board 1 and the surface light source driver circuit board 3 are respectively fixed to the inner surface of the back shell 6 by screws, and the four corners of the flat plate 5 are respectively fixed to the inner surface of the back shell 6 by screws, so that it is convenient to disassemble and assemble the display screen driver circuit board 1, the surface light source driver circuit board 3 and the flat plate 5 on the back shell 6.

[0067] See also Figure 8 and Fig. 9 The active reflective display module can be equipped with two surface light sources 4, which are distributed in the left front and right front of the light-transmitting surface 22 along the width direction of the reflective display screen 2. Compared with one surface light source 4, the two surface light sources 4 have a stronger performance in illuminating the reflective display screen 2, which helps to enhance the display performance of the reflective display screen 2.

[0068] See also Figures 8 to 10 Each surface light source 4 also includes a support seat 44, which is fixedly connected to the reflective substrate 41 and the back of the shading portion 72 respectively. For example, the support seat 44 is an L-shaped long frame or a triangular prism. The support seat 44 provides an installation space between the reflective substrate 41 and the back of the shading portion 72 to reduce the difficulty of fixing the reflective substrate 41 and the back of the shading portion 72.

[0069] See also Fig.10 and Fig.11 The support seat 44 includes a first fixed wall 441 and a second fixed wall 442 fixedly connected to the first fixed wall 441, a third acute angle θ is provided between the second fixed wall 442 and the first fixed wall 441, and the sum of the third acute angle θ and the second acute angle β is equal to 90 degrees. The first fixed wall 441 is detachably fixedly connected to the reflective substrate 41, and the second fixed wall 442 is detachably fixedly connected to the back side of the shading portion 72.

[0070] Specifically, the reflective substrate 41 can be obliquely fixed to the first fixed wall 441 by screws, clips or glue, and the second fixed wall 442 can be horizontally fixed to the back side of the shading portion 72 by screws, clips or glue. The reflective substrate 41 and the back side of the shading portion 72 are detachably fixedly connected through the support seat 44, which reduces the difficulty of fixing the back side of the shading portion 72 to the reflective substrate 41, and facilitates the disassembly and assembly of the surface light source 4 on the front cover 7.

[0071] Embodiment 4

[0072] See also Figure 1 and Fig.12 The two surface light sources 4 are distributed along the length direction of the reflective display screen 2 at the upper front and lower front of the light-transmitting surface 22. Compared with one surface light source 4, the two surface light sources 4 have a stronger performance in illuminating the reflective display screen 2, which helps to enhance the display performance of the reflective display screen 2.

[0073] Embodiment 5

[0074] See also Figure 1 and Fig.13The active reflective display module can be equipped with four surface light sources 4, two of which are distributed at the left front and right front of the light-transmitting surface 22 along the width direction of the reflective display screen 2, and the other two surface light sources 4 are distributed at the upper front and lower front of the light-transmitting surface 22 along the length direction of the reflective display screen 2. Compared with two surface light sources 4, four surface light sources 4 have a stronger performance in illuminating the reflective display screen 2, which helps to enhance the display performance of the reflective display screen 2.

[0075] It should be noted that Example 2, Example 3, Example 4 and Example 5 respectively have the structures of the display screen driver circuit board 1, reflective display screen 2, surface light source driver circuit board 3 and surface light source 4 described in detail in Example 1. For the sake of brief description, Example 2, Example 3, Example 4 and Example 5 are not described in detail. The schematic expressions of the above terms do not necessarily refer to the same embodiment or example. The described components, component structures and the relationships between different components can be combined in a suitable manner in one or more specific instances or examples. In the absence of contradictions, technicians in this field can combine and combine the features of different specific instances or examples and different embodiments or examples described in this specification.

[0076] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An active reflective display module, comprising a display screen driving circuit board (1) and a reflective display screen (2) electrically connected to the display screen driving circuit board (1), wherein the reflective display screen (2) comprises a backlight surface (21) and a light-transmitting surface (22) distributed in layers, wherein the display screen driving circuit board (1) is located behind the backlight surface (21), and wherein: The active reflective display module also includes a surface light source driving circuit board (3) located behind the backlight surface (21) and a surface light source (4) located in front of the light-transmitting surface (22); the surface light source (4) includes a reflective substrate (41), a plurality of LED lamp beads (42) and a plurality of reflectors (43); the plurality of LED lamp beads (42) are fixed on the reflective substrate (41) at intervals and are electrically connected to the surface light source driving circuit board (3); each of the LED lamp beads (42) is located inside a corresponding reflector (43); the plurality of reflectors (43) are fixed side by side on the reflective substrate (41); each of the reflectors (43) is provided with a light outlet, and the light outlet faces the light-transmitting surface (22); A vertical spacing is reserved between each LED lamp bead (42) and the light-transmitting surface (22) in a direction perpendicular to the light-transmitting surface (22), and the vertical spacing is less than or equal to 100 mm; Each of the reflectors (43) is a funnel body, the bottom of the funnel body is fixedly connected to the reflective substrate (41), the top of the funnel body is provided with the light outlet, the spill angle in the light outlet is provided as a first acute angle, the plane where the light outlet is located is perpendicular to the central axis of the funnel body, and a second acute angle is provided between the central axis of the funnel body and the light-transmitting surface (22); The first acute angle is greater than or equal to 10 degrees, the first acute angle is less than or equal to 60 degrees, and the second acute angle is less than or equal to 30 degrees.

2. The active reflective display module according to claim 1, characterized in that: The bottom of the funnel body is provided with two locking feet (431) which are symmetrically distributed along the central axis, and the two locking feet (431) are respectively locked on the reflective substrate (41).

3. The active reflective display module according to claim 1 or 2, characterized in that: The active reflective display module also includes a flat plate (5), the backlight surface (21) being laminated and fixed on the front of the flat plate (5), and the display screen driving circuit board (1) and the surface light source driving circuit board (3) being arranged behind the back of the flat plate (5).

4. The active reflective display module according to claim 3, characterized in that: The active reflective display module further comprises a back shell (6) and a front cover (7), wherein the front cover (7) is sealed on the open end of the back shell (6), and the back shell (6) and the front cover (7) form a shell having a chamber, wherein the display screen driving circuit board (1), the reflective display screen (2), the surface light source driving circuit board (3), the surface light source (4) and the flat plate (5) are arranged in the chamber of the shell; the inner surface of the back shell (6) is fixedly connected to the display screen driving circuit board (1), the surface light source driving circuit board (3) and the flat plate (5) respectively; the front cover (7) comprises a light-transmitting portion (71) and a light-shielding portion (72) surrounding the light-transmitting portion (71), wherein the light-transmitting portion (71) and the light-transmitting surface (22) are arranged in layers relative to each other, and the back surface of the light-shielding portion (72) is fixedly connected to the reflective substrate (41).

5. The active reflective display module according to claim 4, characterized in that: The front of the flat panel (5) is detachably fixedly connected to the backlight surface (21), and the inner surface of the back shell (6) is detachably fixedly connected to the display screen driving circuit board (1), the surface light source driving circuit board (3) and the flat panel (5).

6. The active reflective display module according to claim 4, characterized in that: The surface light source (4) further comprises a support seat (44), wherein the support seat (44) is fixedly connected to the reflective substrate (41) and the back surface of the light shielding portion (72) respectively.

7. The active reflective display module according to claim 6, characterized in that: The support seat (44) includes a first fixed wall (441) and a second fixed wall (442) fixedly connected to the first fixed wall (441); a third acute angle is provided between the second fixed wall (442) and the first fixed wall (441); the first fixed wall (441) is detachably fixedly connected to the reflective substrate (41); and the second fixed wall (442) is detachably fixedly connected to the back side of the shading portion (72).

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