Display module

Abstract

The application discloses a display module and belongs to the technical field of display and touch, which comprises: a display film and a backlight module which are arranged in layers; the display film is arranged on the surface of the display module, and the display film comprises at least a first display area and a second display area; the first display area and the second display area are connected without a gap or overlap together; the backlight module comprises a first backlight area, a second backlight area and a spacer; the first backlight area and the second backlight area are connected or overlap together; the first backlight area and the second backlight area are arranged below the first display area and the second display area respectively; and the spacer is arranged below the first backlight area and the second backlight area; when only the first backlight area emits light, the number of light rays that propagate to the area outside the first backlight area and cross the second backlight area is less than a preset proportion of the total number of light rays propagated by the first backlight area, so that almost no light is leaked between the first backlight area and the second backlight area.

Description

Technical Field

[0001] This invention belongs to the field of display touch technology, and specifically relates to a display module. Background Technology

[0002] Currently, most LED display interfaces use direct backlighting from LEDs, and their specific structure is as follows: The display module has a faceplate containing at least two icons. Behind this faceplate is an opaque plastic light-shielding bracket, which is hollowed out below each icon. To prevent light interference between two icons, there is a partition layer between them, with a thickness between 0.6mm and 2mm. Below this bracket is a circuit board with a light source consisting of n LEDs in the icon area.

[0003] Some LED display interfaces are backlit by light guide plates, and their specific structure is as follows: The display module has a faceplate containing at least two icons. Below this faceplate is an opaque plastic light-shielding bracket, which is hollowed out at the position of each icon. To prevent light interference between two icons, there is a partition layer between the two icons, with a thickness between 0.6mm and 2mm. Each icon has a uniform light guide plate in its hollowed-out area, with a light input port. Below the bracket and the light guide plate in its hollowed-out space is a circuit board with n LEDs forming a light source, each corresponding to the light input port of each light guide plate.

[0004] The partitions on the light-shielding bracket in the aforementioned display module create black lines of 0.6mm-2mm thickness between the icons on the corresponding faceplates. These black lines have little impact on ordinary icons, numbers, and fonts in traditional interactive interfaces; however, for segmented lighting and anti-color screens, the black lines affect the aesthetics. Especially for anti-color screen displays, the presence of these black lines severely limits design freedom, and the simulated color screen loses some of its realism. Summary of the Invention

[0005] The purpose of this invention is to provide a display module that solves the technical problem in the prior art where the partition on the light-shielding bracket of the LED display interface causes black lines between icons on the corresponding surface stickers. These black lines affect aesthetics, severely limit design freedom, and reduce the display fidelity of the display module. To solve the above technical problem, this invention provides a display module.

[0006] This invention provides a display module, comprising: a display film and a backlight module stacked together;

[0007] A display film is disposed on the surface of the display module. The display film includes at least a first display area and a second display area. The first display area and the second display area are connected or overlapped without gaps. The first display area is used to display first content, and the second display area is used to display second content.

[0008] The backlight module includes at least a first backlight area, a second backlight area, and an isolator. The first backlight area and the second backlight area are connected or overlapped. The first backlight area is located below the first display area, and the second backlight area is located below the second display area. The light emitted by each backlight area is upward and can completely cover its corresponding display area. The isolator is located below the first backlight area and the second backlight area. When only the first backlight area emits light, the number of stray light rays that propagate to the area outside the first backlight area and intersect with the second backlight area is less than a preset proportion of the total number of light rays propagating from the first backlight area, so as to ensure that there is almost no stray light between the first backlight area and the second backlight area.

[0009] In this way, when the two backlight areas of the backlight module emit light, the light emitted from the emitting backlight areas rises to the entire display area of ​​their corresponding display films, causing the display content of the display area to become illuminated. Finally, two seamless emitting display areas are formed on the surface of the display module.

[0010] When one backlight area of ​​the backlight module emits light, the other backlight areas remain off. The light emitted from the emitting backlight area rises to the display area of ​​its corresponding display film, causing the displayed content in that area to illuminate. Furthermore, the amount of stray light propagating from the emitting backlight area to the other connected backlight areas is extremely limited and can be ignored. Finally, on the surface of the display module, the display content in the corresponding emitting backlight area becomes illuminated, while the other connected display areas show almost no change in brightness.

[0011] Furthermore, the backlight module includes a light-shielding component and a positive light source;

[0012] The light-shielding component is positioned above the positive light source and below the display film;

[0013] The positive light source includes a circuit board, a first front-facing light-emitting diode (LED), and a second front-facing light-emitting diode (LED); both the first and second front-facing LEDs include at least one set of front-facing LEDs.

[0014] The light-shielding component is a plastic housing, including a light-shielding frame and at least one isolator disposed in the light-shielding frame. The isolator is a light-blocking wall. The thickness of the light-blocking wall gradually decreases at its height, and becomes almost a thin line with a width of less than 0.2 mm at the position where it contacts the display film, forming a pointed corner. The light-blocking wall separates a first backlight area and a second backlight area. A first front light-emitting diode is disposed in the first backlight area, and a second front light-emitting diode is disposed in the second backlight area.

[0015] In this way, the backlight module is placed below the display area in the display film, and each backlight area can fully illuminate its corresponding display area without light spilling into other display areas.

[0016] Furthermore, the light transmittance of the two display areas, excluding the junction, is 80%, while there is a 0.2mm wide area at the junction with 100% light transmittance; the transition between 80% and 100% light transmittance can be gradual.

[0017] Furthermore, the height of the light-blocking wall is slightly lower than that of the light-blocking frame, and the thickness of the light-blocking wall gradually narrows in the height direction, with the width at the highest point between 0.2mm and 0.6mm.

[0018] This reduces the precision requirements for the light-shielding components, making their production easier.

[0019] Furthermore, the backlight module includes another light guide plate assembly, another light-shielding assembly, and a front-emitting light source. The front-emitting light source includes a circuit board and at least two sets of front-emitting LEDs. The light guide plate assembly includes two light guide plates, each with a chamfer below its junction, forming a "∧" shape. The light-shielding assembly is a plastic housing including a light-shielding frame, a step, and at least one light-blocking wall; the height of the step and the light-blocking wall is equal to the height of the light-shielding frame minus the thickness of the light guide plate assembly. The thickness of the light-blocking wall gradually tapers along its height, reaching a thin line at its highest point, forming a pointed corner. This perfectly matches the two chamfers on the light guide plate assembly; the light guide plate assembly is placed on the step and the light-blocking wall. The light-shielding assembly is positioned above the front-emitting light source, and the light-blocking wall is placed inside the light-shielding frame, dividing the frame into at least two backlight areas, each with at least one set of front-emitting LEDs.

[0020] In this way, the backlight module is placed below the display area of ​​the display film, and each backlight area can fully illuminate its corresponding display area without light spilling into other display areas.

[0021] Furthermore, the backlight module includes a light-shielding component and a light guide plate component;

[0022] The light guide plate assembly includes a first light guide plate and a second light guide plate that are connected to each other, and there are no chamfers at the connection between the first light guide plate and the second light guide plate;

[0023] The light-shielding component is positioned above the positive light source and below the display film;

[0024] The light-shielding component includes a light-shielding frame with open ends on the left and right sides and three light-blocking walls. Steps are provided on the light-shielding frame, and a light guide plate assembly is set on the steps and the three light-blocking walls. The surface of the light guide plate assembly is flush with the surface of the light-shielding frame. The thickness of the light-blocking walls gradually decreases in the height direction. The three light-blocking walls are respectively set at both ends and inside the light-shielding frame, and the three light-blocking walls separate a first backlight area and a second backlight area. The light-shielding component is set above the positive light source. A first front light-emitting diode is set in the first backlight area, and a second front light-emitting diode is set in the second backlight area.

[0025] In this way, the backlight module is placed below the display area within the display film, with both ends of the backlight module completely covered by the display film. Therefore, a single display module can provide a seamless, borderless, luminous color image. Multiple such display modules can be connected side-by-side to extend the seamless display content, allowing for modular design of seamless displays. Furthermore, the structure of such light guide plates and light-shielding components is relatively simple, making assembly easier.

[0026] Furthermore, the backlight module includes a light guide plate, a reflector, and a side-emitting light source;

[0027] The side-emitting light source includes a circuit board, a first side-emitting diode, and a second side-emitting diode; both the first side-emitting diode and the second side-emitting diode include at least one set of side-emitting diodes.

[0028] The light guide plate includes a transparent substrate, an isolator, a first refractive area, a second refractive area, a first input port, and a second input port, wherein the isolator is a dividing line;

[0029] The dividing line is a semi-transparent or fully transparent slit in the transparent substrate. The dividing line separates the first refractive area and the second refractive area, forming the first backlight area and the second backlight area. The width of the dividing line is less than 1 mm, the depth of the dividing line is greater than one-quarter of the thickness of the transparent substrate, the length of the dividing line is greater than the length of the first refractive area and the second refractive area, and the angle formed by the straight line from the top of the dividing line to the light-emitting diode and the straight line perpendicular to the plane of the light-emitting diode is greater than 60 degrees.

[0030] The light guide plate is positioned above the reflector and the side-emitting light source, and below the display film;

[0031] The size of the first refractive region is less than or equal to the size of the first display region, and the size of the second refractive region is less than or equal to the size of the second display region;

[0032] A first side-emitting diode is disposed in the first input port, corresponding to the first refractive region; a second side-emitting diode is disposed in the second input port, corresponding to the second refractive region;

[0033] The reflector covers the first and second refractive areas.

[0034] In this way, very little light emitted by the LEDs corresponding to a specific backlight area can propagate into other backlight areas. The backlight module forms two mutually non-cross-spotting backlight areas. Thus, the backlight module is positioned below the display area within the display film, ensuring that each backlight area fully illuminates its corresponding display area without light crossing into other display areas.

[0035] Furthermore, there is at least one layer of light-blocking film in the gap of the transparent substrate on the light guide plate through which the dividing line penetrates. The light-blocking film is an ultra-thin film with low light transmittance, which can be glued to one side of the gap or structurally secured in the middle of the gap.

[0036] Furthermore, the dividing line is a groove that does not completely penetrate the thickness of the transparent substrate, separating the two refractive regions to form two backlight areas; the width of the dividing line is less than 1 mm, and the depth is greater than 1 / 4 of the thickness of the transparent substrate; the length of the dividing line exceeds the length of the refractive regions that need to be separated. At the same time, the angle formed by the straight line from the top of the dividing line to the light-emitting diode and the straight line perpendicular to the plane of the light-emitting diode is greater than 60 degrees.

[0037] Furthermore, the display film includes at least two seamlessly connected first display areas and second display sub-areas. The first display area includes a first display sub-area and a second display sub-area, which have different light transmittances. The second display area includes a third display sub-area and a fourth display sub-area, which also have different light transmittances. The backlight module includes at least a first backlight area and a second backlight area. The first backlight area includes a first backlight sub-area and a second backlight sub-area, which have different brightness levels. The second backlight area includes a third backlight sub-area and a fourth backlight sub-area, which also have different brightness levels. The first display area and the second display area correspond to the first backlight area and the second backlight area, respectively. The first display sub-area, the second display sub-area, the third display sub-area, and the fourth display sub-area correspond to the first backlight sub-area, the second backlight area, the third backlight area, and the fourth backlight area, respectively. The brightness of the backlight sub-area is proportional to the light transmittance of the corresponding display sub-area. In this way, by adjusting the local brightness of the backlight area, the contrast of the displayed content of the display module can be significantly improved.

[0038] Furthermore, the backlight module includes a first light guide plate, a second light guide plate, a reflector, and a side-emitting light source;

[0039] The side-emitting light source includes a circuit board, a first side-emitting diode, and a second side-emitting diode, wherein the first side-emitting diode and the second side-emitting diode are not on the same plane;

[0040] The first light guide plate includes a first transparent substrate, a first dividing line, a first refractive area, and a first input port;

[0041] The second light guide plate includes a second transparent substrate, a second dividing line, a second refractive area, and a second input port;

[0042] The first dividing line and the second dividing line are gaps respectively set on the first transparent substrate and the second transparent substrate. The first dividing line separates the first refractive region, and the second dividing line separates the second refractive region. The width of both the first dividing line and the second dividing line is less than 1 mm, and the depth of both the first dividing line and the second dividing line is greater than one-quarter of the thickness of the first transparent substrate and the second transparent substrate. The length of the first dividing line is greater than the length of the first refractive region. The angle formed by the straight line from the top of the first dividing line to the first side light-emitting diode and the straight line perpendicular to the plane of the first side light-emitting diode is greater than 60 degrees. The length of the second dividing line is greater than the length of the second refractive region. The angle formed by the straight line from the top of the second dividing line to the second side light-emitting diode and the straight line perpendicular to the plane of the second side light-emitting diode is greater than 60 degrees.

[0043] The first light guide plate and the second light guide plate overlap and are positioned above the reflector and below the display film;

[0044] The first refractive area and the second refractive area do not overlap each other. The first refractive area corresponds to the first backlight area of ​​the backlight module, and the second refractive area corresponds to the second backlight area of ​​the backlight module. The first backlight area and the second backlight area of ​​the backlight module are connected together on the same plane.

[0045] The reflector covers the first and second refractive areas;

[0046] A first side-emitting diode is disposed in the first input port, corresponding to the first refractive area, and a second side-emitting diode is disposed in the second input port, corresponding to the second refractive area.

[0047] In this way, the backlight module, through the implementation of two layers of light-emitting diodes and a light guide plate, can also achieve two backlight areas that do not cross-scan. The backlight module is placed below the display area within the display film, ensuring that each backlight area can fully illuminate its corresponding display area without light crossing over to other display areas. This implementation method also solves the problem of narrow display areas within the display film.

[0048] Furthermore, the backlight module includes a first light guide plate, a second light guide plate, a reflector, and a side-emitting light source;

[0049] The side-emitting light source includes a circuit board, a first side-emitting diode, and a second side-emitting diode, wherein the first side-emitting diode and the second side-emitting diode are not on the same plane;

[0050] The first light guide plate includes a first transparent substrate, a first dividing line, a first refractive area, and a first input port;

[0051] The second light guide plate includes a second transparent substrate, a second dividing line, a second refractive area, and a second input port;

[0052] The first light guide plate and the second light guide plate are stacked on top of the reflector. The first refractive area and the second refractive area overlap. The first refractive area corresponds to the first backlight area of ​​the backlight module, and the second refractive area corresponds to the second backlight area of ​​the backlight module. The first backlight area and the second backlight area of ​​the backlight module overlap together.

[0053] The reflector covers the first and second refractive areas;

[0054] A first side-emitting diode is disposed in the first input port, corresponding to the first refractive region; a second side-emitting diode is disposed in the second input port, corresponding to the second refractive region.

[0055] In this way, the backlight module, through the implementation of two layers of light-emitting diodes and light guide plates, can also achieve two backlight areas without light leakage. The backlight module is placed below the display area within the display film, ensuring that each backlight area fully illuminates its corresponding display area while minimizing light leakage to other display areas. This implementation method also solves the problem of two overlapping display areas within the display film, such as one display area encompassing another.

[0056] Furthermore, the backlight module also includes a light-shielding film, which comprises a light-shielding area and at least one transparent area, positioned between an overlapping first and second light guide plate. The transparent area is located above the second refractive area of ​​the second light guide plate. The size of the transparent area is equal to or slightly smaller than the size of the second display area corresponding to the second refractive area of ​​the second light guide plate. The light-shielding area has low light transmittance and high reflectivity, for example, a light transmittance of less than 20% and a reflectivity of more than 40%.

[0057] In this way, the boundary between the two backlight areas of the backlight module, which have almost no light leakage, will be clearer, and the amount of light leakage in the display area will be reduced.

[0058] Furthermore, the display module includes a hidden layer, an upper light guide plate, and an upper light source;

[0059] The hidden layer has a light transmittance of less than 30%; the hidden layer is set on the surface of the display module;

[0060] The upper light source includes a set of side light-emitting diodes. The side light-emitting diodes of the upper light source are disposed on the circuit board of the side light source of the backlight module, or the side light-emitting diodes of the upper light source are disposed on the circuit board of the side light source.

[0061] The upper light guide plate includes a transparent substrate, a refractive area with high light transmittance and low refractive index, and an input port;

[0062] The light guide plate is placed between the hidden layer and the display film;

[0063] The side-emitting diodes in the upper light source are located at the input port of the upper light guide plate.

[0064] In this way, by adding a light guide plate with a pattern using high light transmittance and low refractive index as the refractive area, the display module can provide seamless color display interfaces with different content: a background display interface composed of one or more seamless luminous color images, and a color display interface combining the aforementioned background display interface and the pattern on the light guide plate. These bright small areas can represent indicator lights or buttons.

[0065] Furthermore, the display film also includes a hidden layer, which is placed above the display content and on the surface of the display module.

[0066] In this way, by adding a hidden layer to the display film, the pattern on the upper light guide plate can be made unaffected by the light emission from the color film behind it, resulting in a more uniform pattern and higher visibility on the upper light guide plate.

[0067] Furthermore, the side-emitting light source also includes a touch sensor disk and a touch chip. The display film has a display area corresponding to the touch sensor disk, and the touch sensor disk is located below the display area corresponding to the touch sensor disk. The touch sensor disk is formed by a conductive medium, such as copper foil on a circuit board, and the touch sensor disk is electrically connected to the touch chip through the circuit board.

[0068] In this way, by placing a touch-enabled chip on the circuit board of the light source of a display module and arranging a touch sensor on the copper foil of the circuit board, the display module can be given touch interaction functionality. This is a highly efficient and cost-effective touch display module solution.

[0069] Furthermore, the display module also includes a touch diaphragm, a touch chip, and an FPC connector;

[0070] The touch film includes a transparent area, a touch-sensing area, and an FPC connection terminal. The touch film is located below the hidden layer. The display film has a display area corresponding to the touch-sensing area, and the touch-sensing area is located below the display area corresponding to the touch-sensing area.

[0071] The touch chip and FPC connector are located on the circuit board of the light source in the backlight module;

[0072] The FPC connection terminal is inserted into the FPC connector.

[0073] The touch-sensitive area is formed by a conductive medium, such as PEDOT, ITO, or silver nanowires.

[0074] In this way, by placing a touch-enabled chip on the circuit board of one of the light sources in a display module, and adding a touch diaphragm, the display module can be given touch functionality. This is another efficient and cost-effective touch display module solution.

[0075] The embodiments of the present invention have at least the following beneficial technical effects:

[0076] In this embodiment of the invention, the display module includes a display film and a backlight module. The display film is disposed on the surface of the display module and includes at least a first display area and a second display area, which are connected or overlapped without gaps. The backlight module includes at least a first backlight area, a second backlight area, and an isolator. The first backlight area and the second backlight area are connected or overlapped, with the first backlight area positioned below the first display area and the second backlight area positioned below the second display area. This is used to display the content of the first or second display area without gaps, avoiding the appearance of black lines. The isolator is disposed below the first and second backlight areas; the isolator can be a light-blocking wall, a dividing line, a dividing groove, or a dividing recess, which limits the amount of light straying from the non-light-emitting display area to a certain range, improving the aesthetics of the display module, facilitating design freedom, and also enhancing the display fidelity of the display module. Attached Figure Description

[0077] Figure 1 An exploded view of the structure of a display module provided by the present invention;

[0078] Figure 2 Another display module provided by the present invention includes yet another display film;

[0079] Figure 3 A cross-sectional view of a display module provided by the present invention, comprising another light-blocking wall, a light-shielding frame, and a display film;

[0080] Figure 4 An exploded view of the structure of another display module provided by the present invention;

[0081] Figure 5 An exploded view of a display module provided by the present invention, comprising three light-blocking walls, one light-shielding frame, and two light guide plates;

[0082] Figure 6 An exploded view of the structure of another display module provided by the present invention;

[0083] Figure 7 An exploded view of the structure of another display module provided by the present invention;

[0084] Figure 8 Another display module provided by the present invention includes yet another light guide plate;

[0085] Figure 9 Another display module provided by the present invention includes yet another light guide plate;

[0086] Figure 10 Another display module provided by the present invention includes yet another light guide plate;

[0087] Figure 11 An exploded view of the structure of another display module provided by the present invention;

[0088] Figure 12 An exploded view of the structure of another display module provided by the present invention;

[0089] Figure 13 An exploded view of the structure of another display module provided by the present invention;

[0090] Figure 14 Another display module provided by the present invention includes yet another light guide plate;

[0091] Figure 15 An exploded view of the structure of another display module provided by the present invention;

[0092] Figure 16 An exploded view of the structure of another display module provided by the present invention;

[0093] Figure 17 An exploded view of the structure of another display module provided by the present invention;

[0094] Figure 18 Another display module provided by the present invention includes yet another display film with a hidden layer;

[0095] Figure 19 This is an exploded view of another display module provided by the present invention. The realization of the objectives, functional features, and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. Detailed Implementation

[0096] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0097] The display module provided in the embodiments of the present invention will be described in detail below with reference to the accompanying drawings, through specific embodiments and application scenarios.

[0098] A display film is disposed on the surface of the display module. The display film includes at least a first display area and a second display area. The first display area and the second display area are connected or overlapped without gaps. The first display area is used to display first content, and the second display area is used to display second content.

[0099] The backlight module includes at least a first backlight area, a second backlight area, and an isolator. The first backlight area is connected to or overlaps with the second backlight area. The first backlight area is located below the first display area, and the second backlight area is located below the second display area. The isolator is located below the space between the first backlight area and the second backlight area. When only the first backlight area emits light, the amount of light rays that propagate to the area outside the first backlight area and intersect with the second backlight area is less than a preset proportion of the total amount of light rays propagating from the first backlight area, so as to ensure that there is almost no light leakage between the first backlight area and the second backlight area.

[0100] It should be noted that the isolation component is a light-blocking wall, a dividing line, a dividing groove, or a dividing recess.

[0101] Optionally, the preset ratio is 5%. In actual use, those skilled in the art can determine the size of the preset ratio according to actual needs, and no limitation is made here.

[0102] Reference Figure 1 The diagram shows an exploded view of the structure of a display module provided by the present invention.

[0103] The display module includes: a display film 120, and a backlight module including a light-shielding component 140 and a positive light source 160.

[0104] Optionally, the display diaphragm 120 includes at least a first display area 121 and a second display area 122.

[0105] Optionally, the first display area 121 and the second display area 122 have a light transmittance of 80%.

[0106] Optionally, the display film 120 may further include a diffuser layer 125, which is formed by applying a diffuser coating to the back side of the display film 120.

[0107] Optionally, the first display area 121 and the second display area 122 can be spliced ​​together without gaps or overlapped together without gaps.

[0108] Optionally, the positive light source 160 includes a circuit board 169 and a first front light-emitting diode 161 and a second front light-emitting diode 162.

[0109] Optionally, the light-shielding assembly 140 is a plastic housing comprising a light-shielding frame 144 and a light-blocking wall 143; the light-blocking wall 143 is positioned below the boundary area between the first display area 121 and the second display area 122 and above the positive light source 160.

[0110] Optionally, the thickness of the light-blocking wall 143 gradually decreases at its height, becoming almost a thin line less than 0.2 mm wide at the point where it contacts the display film, forming a pointed corner. In this way, the space inside the light-blocking frame 144 is isolated into two hollow areas 141 and 142, corresponding to two sets of light-emitting diodes 161 and 162, respectively, forming the first backlight area and the second backlight area on the surface of the backlight module.

[0111] Optionally, the first backlight area and the second backlight area can be spliced ​​together without gaps or overlapped together without gaps, and the first backlight area and the second backlight area correspond to the first display area 121 and the second display area 122, respectively.

[0112] Alternatively, the light-blocking wall 143 can be an open wall or an enclosed enclosure.

[0113] Optionally, the thickness of the light-blocking wall 143 gradually decreases in the height direction, becoming almost a thin line with a width of only 0.2 mm at the position where it contacts the display film 120, forming a pointed corner.

[0114] Optionally, both the first front-facing light-emitting diode 161 and the second front-facing light-emitting diode 162 are composed of a group of nine blue front-facing light-emitting diodes.

[0115] In practical applications, when the two sets of LEDs 161 and 162 are turned on, the light source emits blue light. The light propagates within the two hollowed-out areas 141 and 142 of the light-shielding frame 144. Most of the light directly hits the corresponding display area on the display film 120, while a portion propagates to the inner wall of the hollowed-out area for emission before reaching the display film 120. When the blue light enters the diffuser layer of the display film 120, it disperses in several directions. Therefore, although no light directly enters the display film 120 from the pointed corner of the light-blocking wall 143 inside the light-shielding frame 144, some of the light entering the display film 120 from the periphery is diffused onto this line, which is less than 0.2mm wide. Finally, these rays pass through the first display area 121 and the second display area 122 on the display film 120, forming two relatively uniform blue, uninterrupted display areas on the surface of the display module. The junction of the two display areas has a 0.2mm wide area with slightly weaker display brightness than the other display areas.

[0116] When one set of LEDs 161 is turned on and the other set of LEDs 162 is turned off, the light source emits blue light that propagates in the first backlight area 141 within the light-shielding frame 144. Most of the light directly hits the corresponding first display area 121 on the display film, while a portion propagates to the inner wall of the perforated area for further emission before reaching the display film. When the blue light enters the diffuser layer of the display film for diffused propagation, the vast majority of the light passes through the first display area 121. Simultaneously, a very small portion of the light also propagates to the second backlight area 142 through the thin walls at the pointed corners of the light-shielding wall or the tiny gaps between the light-shielding wall and the display film; this portion is negligible due to its extremely limited quantity. Finally, a relatively uniformly emitting blue first display area 121 and a non-emitting second display area 122 are formed on the surface of the display module.

[0117] In this way, when one set of LEDs of the light source is turned on, the display module surface only displays the corresponding display area, and the other display areas are not lit; but when the two sets of LEDs of the light source are turned on, the display module surface displays the two connected display areas without gaps.

[0118] Reference Figure 2 This illustrates yet another display module provided by the present invention, comprising yet another display film.

[0119] In one possible implementation, the transmittance of the first display area 123 and the second display area 124, excluding the junction, is 80%, while the transmittance of the 0.2 mm wide area at the junction 126 is 100%. Optionally, the transition between 80% and 100% can be a gradient transition.

[0120] In practical applications, when the two sets of LEDs 161 and 162 are turned on, the light source emits blue light. The light propagates within the first and second backlight areas of the light-shielding frame 144. Due to the sharp angle of the light-shielding wall, less light reaches the junction 126 on the display film 120 than in the first display area 123 and the second display area 124. Therefore, the brightness at the junction is slightly weaker, which is corrected by adjusting the transmittance of the display area. Finally, two relatively uniform, seamless blue display areas are formed on the surface of the display module.

[0121] Reference Figure 3 The diagram shows a cross-sectional view of another display module provided by the present invention, comprising another light-blocking wall, a light-shielding frame, and a display film.

[0122] In one possible implementation, the height of the light-blocking wall 145 is less than the height of the light-shielding frame 144, and the distance from the display film 120 is 0.4 mm. The light-blocking wall 145 gradually thins in the height direction, and when the distance from the display film 120 is 0.4 mm, the width of the highest point of the light-blocking wall 145 is 0.5 mm.

[0123] In practical applications, when the two sets of light-emitting diodes 161 and 162 are turned on, the light source emits blue light. The light propagates from the first backlight area 141 and the second backlight area 142 in the light-shielding frame 144. Because there is a 0.4mm gap between the light-blocking wall 145 and the display film 120, a small portion of the light can directly propagate to the junction on the display film 120, ultimately forming two relatively uniform blue, uninterrupted display areas on the surface of the display module.

[0124] When one set of LEDs 161 is turned on and the other set of LEDs 162 is turned off, the light source emits blue light that propagates in the first backlight area 141 and the second backlight area 142 within the light-shielding frame 144. A small portion of the light can directly propagate to the junction on the display film 120 through the 0.4mm gap between the light-blocking wall 145 and the display film 120, and a very small portion will also propagate to the hollow area 142, but its quantity is negligible. Finally, a uniformly emitting blue first display area 121 and a non-emitting second display area 122 are formed on the surface of the display module.

[0125] Reference Figure 4 The diagram shows an exploded view of the structure of another display module provided by the present invention.

[0126] An embodiment of the present invention provides a display module, including: a hidden layer 110, a display film 127 and a backlight module, the backlight module including a light guide plate assembly 130, a light shielding assembly 150 and a positive light source 160.

[0127] The hidden layer 110 is black in color and has a light transmittance of about 13%. The hidden layer 110 is placed on the surface of the display module.

[0128] Display diaphragm 127 includes seamlessly connected display areas 128 and 129, each display area including a color image. Display diaphragm 127 is positioned below hidden layer 110.

[0129] The positive light source 160 includes a circuit board 169 and at least two sets of nine white front-emitting diodes 163 and 164 respectively.

[0130] The light guide plate assembly 130 includes a first light guide plate 131 and a second light guide plate 132. The first light guide plate 131 and the second light guide plate 132 each have a chamfer at the junction, and the two chamfers together form a "^" shape. The first light guide plate 131 and the second light guide plate 132 are both made of 1mm thick transparent sheet as the base material.

[0131] The light-shielding assembly 150 is a plastic housing and includes a light-shielding frame 154, a step 155, and a light-blocking wall 159. The height of the step 155 is 1 mm lower than the height of the light-shielding frame 154. The light-blocking wall 159 divides the space within the light-shielding frame 154 into a first backlight area 151 and a second backlight area 152. The light-blocking wall 159 is positioned below the boundary between the first display area 128 and the second display area 129. The thickness of the light-blocking wall 159 gradually tapers along the height direction of the step 155, becoming a thin line less than 0.2 mm wide at a distance of 0.4 mm from the display film, forming a pointed corner that matches the two chamfers on the light guide plate assembly 130. The light guide plate assembly 130 is positioned on the step 155 and the light-blocking wall 159, and the positive light source 160 is positioned below the light-shielding assembly 150, forming a backlight module positioned below the display film 127.

[0132] In practical applications, when both sets of LEDs 163 and 164 are turned off and the light source does not emit light, ambient light shines on the surface of the display module. Of this ambient light, 13% passes through the hiding layer 110. After reflection from different areas of the display film, light guide plate, and circuit board behind the hiding layer 110, less than 1% of the ambient light passes through the hiding layer 110 again. Therefore, different areas of the light-shielding film, light guide plate, and reflector behind the hiding layer are almost invisible. Under ambient light, only a black surface of the display module is visible.

[0133] When the two sets of LEDs 163 and 164 are turned on, the light source emits white light. The light propagates from the first backlight area 151 and the second backlight area 152 within the light-shielding frame 154. Most of the light enters directly from below the first light guide plate 131 and the second light guide plate 132 and then exits from above onto the display film. A small portion of the light propagates inside the light guide plates 131 and 132 and then exits from above onto the display film. Finally, this light passes through the color image and forms two seamless luminous color images on the surface of the display module in the first display area 128 and the second display area 129.

[0134] When one set of LEDs 163 is turned on and the other set of LEDs 164 is turned off, the light source emits white light that propagates in the first backlight area 151 within the light-shielding frame 144. The vast majority of the light enters from below the light guide plate 131 and exits directly from above onto the display film. A small portion of the light propagates inside the light guide plate 131 and then exits from above onto the color image in the display area 128. A very small portion of the light exits from the edge of the junction of the light guide plates 131, and even less enters from the edge of the junction into the light guide plate 132 before exiting upwards onto the display film 127. The amount of these rays is negligible. Finally, all the light passes through the color image, forming an luminous color image and a black surface on the first display area 128 and the second display area 129 of the display module, respectively.

[0135] Reference Figure 5 The diagram shows an exploded view of another display module provided by the present invention, comprising three light-blocking walls, a light-shielding frame, and two light guide plates.

[0136] In one possible implementation, the display module includes a light guide plate assembly 135 and a light shielding assembly 170. The light guide plate assembly 135 includes a first light guide plate 133 and a second light guide plate 134. The two light guide plates have no chamfer at the junction. The light guide plates are made of a 1mm thick transparent sheet as the substrate.

[0137] The light-shielding assembly 170 is a plastic housing and includes a light-shielding frame 174, two steps 175 and 176, and three light-blocking walls 177, 178, and 179. The height of steps 175 and 176 is 1 mm lower than the height of the light-shielding frame 174. The height of light-blocking walls 177, 178, and 179 is 1 mm lower than the height of the light-shielding frame 174. Light-blocking walls 177, 178, and 179 are respectively positioned below the boundary area of ​​the first display area 128 and the second display area 129, forming the first backlight area 171 and the second backlight area 172. The thickness of light-blocking walls 177, 178, and 179 gradually tapers from the top, becoming a thin line less than 0.4 mm wide at the highest point, forming a pointed corner. The light guide plate assembly 135 is placed on steps 175 and 176 and light-blocking walls 177, 178, and 179.

[0138] In practical applications, when one set of LEDs 163 is turned on and the other set of LEDs 164 is turned off, the light source emits white light that propagates in the first backlight area 171 within the light-shielding frame 174. Most of the light enters from below the light guide plate 133 and exits directly from above onto the display film 127, causing the color image on the first display area 128 to become illuminated. The pointed corners of the light-shielding walls 177 and 179 allow the color image on the first display area 128 to be fully illuminated, with the left edge of the illuminated image forming the edge of the display module. Finally, all the light passes through the color image, forming a borderless illuminated color image on the left side and a black surface on the first display area 128 and the second display area 129 of the display module, respectively.

[0139] In this way, a single display module can provide a seamless, borderless, luminous color image; multiple such display modules can be seamlessly connected together to modularly extend the displayed content. At the same time, the structure of such light guide plates and light-shielding components is relatively simple, making assembly easier.

[0140] Reference Figure 6 The diagram shows an exploded view of the structure of another display module provided by the present invention.

[0141] In one possible implementation, the display module includes a hidden layer 110, a display film 180, and a backlight module, which includes a light guide plate 138, a light shielding component 190, and a positive light source 165.

[0142] The hidden layer 110 is black in color and has a light transmittance of about 13%; the hidden layer 110 is placed on the surface of the display module.

[0143] The display diaphragm 180 includes at least two seamlessly connected first display areas 181 and second display areas 182, each display area including a color image, and the display diaphragm 180 is placed below the hidden layer 110.

[0144] The positive light source 165 includes a circuit board 168 and at least two sets of twenty white front-emitting diodes 166 and three white front-emitting diodes 167, respectively.

[0145] The light guide plate 138 includes a first light guide area 136 and a second light guide area 137. The two light guide areas can be completely separated, partially separated, or not separated. Complete separation means there is a penetrating gap at the junction of the two light guide areas, completely separating them. Partial separation means there is a non-penetrating gap at the junction of the two light guide areas, partially separating and partially connecting them. Not separated means there is no treatment at the junction of the two light guide areas. In this case, the two light guide areas are not separated. The light guide plate uses a 1mm thick transparent sheet as its base material.

[0146] It should be noted that the light-shielding assembly 190 is a plastic shell, including a light-shielding frame 194, a step 195, and an isolation wall 197; the height of the step 195 is 1mm lower than the height of the light-shielding frame 194. The height of the light-shielding wall 197 is 1mm lower than the height of the light-shielding frame 194. The isolation wall 197 is placed below the boundary area of ​​the two display areas 181 and 182, forming the first backlight area 191 and the second backlight area 192; the thickness of the light-shielding wall 197 gradually decreases in the height direction, becoming a thin line with a width of less than 0.4mm at the highest point, forming a pointed corner. The light guide plate 138 is placed on the step 195 and the isolation wall 197, and the positive light source 165 is placed below the light-shielding assembly 190. Two sets of light-emitting diodes 166 and 167 correspond to the first backlight area 191 and the second backlight area 192, respectively, forming a backlight module; the backlight module is placed below the display film 180.

[0147] In practical applications, when both sets of LEDs 166 and 167 are turned off and the light source does not emit light, ambient light shines on the surface of the display module. Of this ambient light, 13% passes through the hiding layer 110. After reflection from different areas of the display film, light guide plate, and circuit board behind the hiding layer 110, less than 1% of the ambient light passes through the hiding layer 110 again. Therefore, different areas of the light-shielding film, light guide plate, and reflector behind the hiding layer are almost invisible. Under ambient light, only a black surface of the display module is visible.

[0148] When all LEDs in one group of LEDs 166 are turned on and another group of LEDs 167 is turned off, the white light emitted by the light source enters the hollow area 191 in the light-shielding component 190 for propagation. Most of the light enters directly from below the first light guide plate 136 and exits from above onto the display film. A small portion of the light propagates inside the first light guide plate 136 and exits from above onto the display film. A very small portion of the light propagates to the second light guide plate 137 and exits from above onto the display film; this portion is negligible. Finally, this light forms an luminous color image on the first display area 181 of the display module surface through a color image, and a black surface on the second display area 182.

[0149] When all LEDs in one group of LEDs 166 are kept on, and the middle LED in another group of LEDs 167 is switched on, the light source emits white light of almost similar density, which enters the first backlight area 191 and the second backlight area 192 in the light-shielding assembly 190 for propagation. Most of the light enters directly from below the first light guide plate 136 and the second light guide plate 137 and exits from above onto the display film. A small portion of the light propagates inside the light guide plates 136 and 137 and then exits from above onto the display film. Finally, this light, through the color image, uniformly forms two seamless luminous color images on the surface of the display module in the first display area 181 and the second display area 182.

[0150] When all LEDs in one group of LEDs 166 and one LED in another group of LEDs 167 are kept on, and the other two LEDs in this group of LEDs 167 are updated and turned on, the light source emits white light of different densities that propagate into the cutout areas 191 and 192 in the light-shielding component 190. The light density in cutout area 192 is approximately three times that in cutout area 191. Most of the propagated light enters directly from below the light guide plates 136 and 137 and then exits from above onto the display film. A small portion of the light propagates inside the light guide plates 136 and 137 and then exits from above onto the display film. Finally, this light passes through the color image and forms two seamless, luminous color images of different brightness in display areas 181 and 182 on the surface of the display module. The brightness of display area 182 is almost three times that of display area 181. Here, we call the color image in display area 182 fully bright and the color image in display area 181 half bright.

[0151] In this way, the display mode can seamlessly display a half-bright or fully bright color image in the middle area of ​​an overall half-bright color image.

[0152] Optionally, the light density mentioned above refers to the amount of light propagating within a unit area.

[0153] Alternatively, the aforementioned isolation walls can have different geometric shapes, such as straight walls, "S"-shaped curved walls, and other open walls, or square or circular enclosed walls.

[0154] Reference Figure 7 The diagram shows an exploded view of the structure of another display module provided by the present invention.

[0155] In one possible implementation, the display module includes a display film 230 and the backlight module includes a light guide plate 240, a reflector 251 and a side-emitting light source 260.

[0156] The display diaphragm 230 is disposed on the surface of the display module. The display diaphragm 230 includes a first display area 231 and a second display area 232. The first display area 231 and the second display area 232 are connected together without gaps. The first display area 231 is used to display first content, and the second display area 232 is used to display second content. Each display area includes a color image.

[0157] The display film 230 also includes a light-diffusing layer 235, which is formed by applying a light-diffusing coating to the back side of the display film 230. The display film 230 is placed on the surface of the display module.

[0158] The backlight module includes a light guide plate 240, a reflector 251, and a side-emitting light source 260; the side-emitting light source 260 includes a circuit board 269, a first side-emitting diode 261, and a second side-emitting diode 262.

[0159] Optionally, both the first side-emitting diode 261 and the second side-emitting diode 262 are composed of one or more side-emitting diodes.

[0160] The light guide plate 240 includes a transparent substrate 241, a dividing line 242, a first refractive region 243, a second refractive region 244, a first input port 245, and a second input port 246. The dividing line 242 is a slit provided on the transparent substrate 241, which separates the first refractive region 243 and the second refractive region 244. The width of the dividing line 242 is less than 1 mm, the depth of the dividing line 242 is greater than one-quarter of the thickness of the transparent substrate 241, and the length of the dividing line 242 is greater than the length of the first refractive region 243 and the second refractive region 244. The angle formed by the straight line from the top of the dividing line 242 to the side light-emitting diode 261 or 262 and the straight line perpendicular to the plane of the light-emitting diode is greater than 60 degrees. In this way, very little light emitted by the light-emitting diode can propagate into the non-corresponding refractive region.

[0161] A light guide plate 240 is disposed below the display film 230 and above the reflector 251 and the side-emitting light source 260; the size of the first refractive area 243 is less than or equal to the size of the first display area 231, and the size of the second refractive area 244 is less than or equal to the size of the second display area 232; a first side-emitting diode 261 is disposed in the first input port 245, corresponding to the first refractive area 243; a second side-emitting diode 262 is disposed in the second input port 246, corresponding to the second refractive area 244.

[0162] The reflector covers the first refractive region 243 and the second refractive region 244;

[0163] The surface of the backlight module includes a first backlight area and a second backlight area, which correspond to a first refractive area 243 and a second refractive area 244, respectively.

[0164] Optionally, in the first refractive region 243 and the second refractive region 244, particles of different shapes and densities can be arranged on the transparent substrate 241 by printing as needed.

[0165] In practical applications, when the two sets of light-emitting diodes 261 and 262 are turned off and the side-emitting light source 260 does not emit light, ambient light shines on the surface of the display module, and the image on the surface of the display module reflects a portion of the light. The amount of this light depends on the brightness of the ambient light and the emissivity of the image. When the reflected light reaches a certain amount, the image becomes visible.

[0166] When one set of LEDs 261 is turned on and the other set of LEDs 262 is turned off, the side-emitting light source 260 emits white light, which enters the transparent substrate 241 through the first input port 245 and propagates. Most of the light propagates to the first refraction area 243 for refraction, so that part of the light is emitted from the transparent substrate 241 vertically to the first display area 231, and part of the light is emitted from the back of the transparent substrate 241 and reflected by the reflector 251, and then enters the transparent substrate 241 from the bottom for a second propagation, finally reaching the top of the transparent substrate 241 and then being emitted. The emitted light passes through the diffuser layer 235 and the first display area 231 with a non-uniform transmittance, making the color image on the first display area 231 glow.

[0167] Meanwhile, near the edge of the dividing line 242 in the first refractive area 243, a small portion of the light rays propagate or refract from the transparent substrate 241 and enter the gap of the dividing line 242. Some of these rays will reach the area where the first display area 231 and the second display area 232 meet, adding luminous lines to the area where the first display area 231 and the second display area 232 meet. Another portion will continue to propagate to the other side of the dividing line 242 and re-enter the transparent substrate 241 to reach the second refractive area 244. In addition to these rays, some rays enter the transparent substrate 241 from the first input port 245, bypass the dividing line 242, and propagate to the second refractive area 244. After being refracted by the second refractive area 244, a small portion of these rays are emitted vertically upward from the transparent substrate 241 to the second display area 232. These emitted rays pass through the diffuser layer 235 and the second display area 232 which has a non-uniform transmittance. The number of these rays is extremely limited and can be ignored. The brightness of the color image on the second display area 232 remains unchanged. Finally, on the surface of the display module, an luminescent color image is formed in the first display area 231 and the dividing line 242 area, and a non-luminescent color image is formed in the second display area 232.

[0168] When one set of LEDs 262 is turned on and the other set of LEDs 261 is turned off, the side-emitting light source 260 emits white light, which enters the transparent substrate 241 through the second input port 246 and propagates. Most of the light propagates to the second refraction area 244 for refraction, causing a portion of the light to be emitted vertically upward from the transparent substrate 241 to the second display area 232. Another portion of the light is emitted from the back of the transparent substrate 241, reflected by the reflector 251, and then enters the transparent substrate 241 from the bottom again for a second propagation until it reaches the top of the transparent substrate 241 and is then emitted. The emitted light passes through the diffuser layer 235 and the second display area 232 with a non-uniform transmittance, causing the color image on the second display area 232 to become luminous.

[0169] Meanwhile, near the edge of the dividing line 242 in the second refractive region 244, a small portion of the light rays propagate or refract from the transparent substrate 241 and enter the gap of the dividing line 242. Some of these rays will reach the area where the first display area 231 and the second display area 232 meet, adding luminous lines to the area where the first display area 231 and the second display area 232 meet. Another portion will continue to propagate to the other side of the dividing line 242 and re-enter the transparent substrate 241 to reach the refractive region 243. In addition to these rays, some rays enter the transparent substrate 241 from the second input port 246, bypass the dividing line 242, and propagate to the first refractive region 243. After being refracted by the first refractive region 243, a small portion of these rays are emitted vertically upward from the transparent substrate 241 to the first display area 231. These emitted rays pass through the diffuser layer 235 and the first display area 231 with a non-uniform transmittance. The number of these rays is extremely limited and can be ignored. The brightness of the color image on the first display area 231 remains unchanged. Finally, on the surface of the display module, a luminous color image is formed in the second display area 232 and the dividing line 242 area, and a non-luminous color image is formed in the first display area 231.

[0170] When the two light-emitting diodes 261 and 262 are turned on, the side-emitting light source 260 emits white light, which enters the transparent substrate 241 through the first input port 245 and the second input port 246 and propagates. Most of the light propagates to the first refraction area 243 and the second refraction area 244 for refraction, so that a portion of the light is emitted vertically upward from the transparent substrate 241 to the first display area 231 and the second display area 232. Another portion of the light is emitted from the back of the transparent substrate 241 and reflected by the reflector 251, and then enters the transparent substrate 241 from the bottom for a second propagation until it reaches the top of the transparent substrate 241 and is emitted. The emitted light passes through the diffuser layer 235 and the first display area 231 and the second display area 232 with non-uniform light transmittance, so that the color images on the first display area 231 and the second display area 232 become luminous.

[0171] Meanwhile, near the edges of the dividing line 242 in the first refractive region 243 and the second refractive region 244, a small portion of the light rays propagate or refract from the transparent substrate 241 and enter the gap of the dividing line 242. Some of these rays will hit the area where the first display area 231 and the second display area 232 meet. Because these rays come from two refractive regions, their quantity will be twice that of ordinary rays, adding brighter luminous lines to the area where the first display area 231 and the second display area 232 meet than to other areas. Finally, on the surface of the display module, a luminous color image is formed in the first display area 231 and a luminous color image is formed in the second display area 232. At the same time, there will be brighter luminous lines at the junction of the two images.

[0172] In this way, when one of the light-emitting diodes of the light source is turned on, the surface of the display module only displays the corresponding display area, and the other display areas are not lit; but when both light-emitting diodes of the light source are turned on, the surface of the display module displays the first display area 231 and the second display area 232 without gaps; there will be a brighter thin line at the junction of the first display area 231 and the second display area 232.

[0173] Reference Figure 8 This illustrates yet another display module provided by the present invention, comprising yet another light guide plate.

[0174] In one possible implementation, the light guide plate 240 includes a transparent substrate 241 and a dividing groove 250. The dividing groove 250 opens from the bottom of the transparent substrate 241 without penetrating the thickness of the transparent substrate 241, partially separating two connected first refractive regions 243 and second refractive regions 244. The depth of the dividing groove 250 needs to be greater than 1 / 2 of the thickness of the transparent substrate 241, in this case, 2 / 3. The length of the dividing groove 250 exceeds the length of the refractive regions to be separated. Simultaneously, the angle formed by the straight line from the top of the dividing groove 250 to the light-emitting diode and the straight line perpendicular to the plane of the light-emitting diode is greater than 60 degrees, so that very little light emitted by this light-emitting diode can propagate into non-corresponding refractive regions.

[0175] When one set of LEDs 261 is turned on and the other set of LEDs 262 is turned off, the side-emitting light source 260 emits white light, which enters the transparent substrate 241 through the first input port 245 and propagates thereafter. The light is refracted in the first refraction area 243, directly or indirectly causing a portion of the light to be emitted vertically upward from the transparent substrate 241 to the first display area 231, making the color image on the first display area 231 glow.

[0176] Meanwhile, near the edge of the dividing groove 250 in the first refractive area 243, a small portion of the light propagates directly from the top of the dividing groove 250 to the second refractive area 244. Another small portion of the light, after propagation or refraction, exits from the transparent substrate 241 and enters the gap in the dividing groove 250. Some of these rays will propagate, refract, and reflect in the area where the first display area 231 and the second display area 232 meet, adding luminous fine lines to the area where the first display area 231 and the second display area 232 meet. The remaining portion will continue to propagate to the other wall of the dividing groove 250 and re-enter the transparent substrate 244. The substrate 241 reaches the second refractive region 244. Besides these rays, some light enters the transparent substrate 241 from the first input port 245, bypasses the dividing groove 250, and propagates to the second refractive region 244. After refraction by the second refractive region 244, a small portion of this light is emitted vertically upwards from the transparent substrate 241 to the second display region 232. This emitted light passes through the diffuser layer 235 and the non-uniform transmittance of the second display region 232. The amount of this light is extremely limited and negligible, resulting in almost no change in the brightness of the color image on the second display region 232. Finally, on the surface of the display module, a luminous color image is formed in the first display region 231 and the dividing groove 250 area, and a non-luminous color image is formed in the second display region 232.

[0177] In this way, the light guide plate uses segmented slots, compared to segmented lines. The brightness of the non-emissive image will be slightly higher; however, the brightness of the thin luminous lines between the emissive and non-emissive images will be slightly lower. Therefore, the display module has more options.

[0178] Reference Figure 9 This illustrates yet another display module provided by the present invention, comprising yet another light guide plate.

[0179] In one possible implementation, the light guide plate 240 includes a 2mm thick transparent substrate 241, a partition wall 249, two first refractive regions 243, a second refractive region 244, two first input ports 245, and a second input port 246. The light guide plate 240 is positioned below the display film 230 and above the reflector 251 and the side-emitting light source 260. The dimensions of the refractive regions 243 and 244 are the same as the dimensions of the display regions 231 and 232, respectively. The positions of the refractive regions 243 and 244 are the same as the positions of the display regions 231 and 232, respectively. The light-emitting diodes 261 and 262 are inserted into the first two input ports 245 and the second input port 246, respectively, corresponding to the first refractive regions 243 and 244. The reflector 251 covers the entire first refractive regions 243 and 244. The partition wall 249 and the gap separate the first refractive region 243 and the second refractive region 244, which are connected together. The gap contains at least one layer of light-blocking film. The length of the partition wall 249 exceeds the length of the refractive regions to be separated, and in this embodiment, it is equal to the width of the transparent substrate 241. The light-blocking film of the partition wall 249 is an ultra-thin film with almost zero light transmittance, which can be glued to one side of the gap or structurally secured in the middle of the gap. In this way, light can hardly pass through the partition wall to continue propagating on the other side. In this embodiment, the light-blocking film of the partition wall 249 is adhered to one side of the first refractive region 243.

[0180] Understandably, when one set of LEDs 261 is turned on and the other set of LEDs 262 is turned off, the side-emitting light source 260 emits white light, which enters the transparent substrate 241 through the first input port 245 and propagates. The vast majority of the light propagates to the first refraction region 243 for refraction, and almost no light propagates to the second refraction region 244 for refraction. Finally, on the surface of the display module, an emitting color image is formed in the first display region 231 and a non-emitting color image is formed in the second display region 232.

[0181] Reference Figure 10 This illustrates yet another display module provided by the present invention, comprising yet another light guide plate.

[0182] In one possible implementation, the light guide plate 240 includes a 2mm thick transparent substrate 241, a dividing line 242, a first refractive region 247, a second refractive region 248, a first input port 245, and a second input port 246. The light guide plate 240 is positioned below the display film 230 and above the reflector 251 and the side-emitting light source 260. The positions of the first refractive region 247 and the second refractive region 248 are the same as the positions of the first display region 231 and the second display region 232, respectively. The dimensions of the first refractive region 247 and the second refractive region 248 are smaller than the dimensions of the first display region 231 and the second display region 232, respectively. For example, the width of the first refractive region 247 and the second refractive region 248 is approximately 4mm smaller than the dimensions of the first display region 231 and the second display region 232, respectively, on the side near the light-emitting diode input port, and approximately 2mm smaller than the dimensions of the first display region 231 and the second display region 232, respectively, on the side away from the light-emitting diode input port.

[0183] Thus, when one set of LEDs 261 is turned on and the other set of LEDs 262 is turned off, the side-emitting light source 260 emits white light, which enters the transparent substrate 241 through the first input port 245 and propagates. Most of the light propagates to the first refraction area 247 for refraction, causing a portion of the light to be emitted vertically upward from the transparent substrate 241 to the first display area 231. Another portion of the light is emitted from the back of the transparent substrate 241, reflected by the reflector 251, and then re-enters the transparent substrate 241 from the bottom for a second propagation until it reaches the top of the transparent substrate 241 and is then emitted. Because the emitted light has a certain refraction angle after refraction, the area in the transparent substrate 241 where the light can be emitted is larger than the refraction area. Furthermore, the light emitted from the top of the transparent substrate 241 enters the diffuser layer 235 for diffuse propagation and then expands the light-emitting area. Finally, this light can cover the entire first display area 231, which has a non-uniform transmittance, making the color image on the first display area 231 glow.

[0184] Meanwhile, because the edge of the refractive area 247 is about 1-2 mm away from the edge of the dividing line 242, only a very small portion of the light can propagate or be refracted from the transparent substrate 241 and enter the gap of the dividing line 242. Some of these rays will hit the area where the first display area 231 and the second display area 232 meet, adding a relatively dark luminous line to the area where the first display area 231 and the second display area 232 meet. The rest will continue to propagate to the other side of the dividing line 242 and re-enter the transparent substrate 241 to reach the second refractive area. In addition to the light rays, a portion of the light enters the transparent substrate 241 from the first input port 245, bypasses the dividing line 242, and propagates to the second refractive region 248. After refraction in the second refractive region 248, a small portion of these rays are emitted vertically upwards from the transparent substrate 241 to the second display region 232. These emitted rays pass through the diffuser layer 235 and the non-uniform transmittance of the second display region 232. The quantity of these rays is extremely limited and negligible, and the brightness of the color image on the second display region 232 remains unchanged. Finally, on the surface of the display module, an luminous color image is formed in the first display region 231 and the dividing line 242 area, and a non-luminous color image is formed in the second display region 232.

[0185] When the two sets of light-emitting diodes 261 and 262 are turned on, the side-emitting light source 260 emits white light, which enters the transparent substrate 241 through the first input port 245 and the second input port 246 and propagates. Most of the light propagates to the first refraction area 247 and the second refraction area 248 for refraction, so that a portion of the light is emitted vertically upward from the transparent substrate 241 to the first display area 231 and the second display area 232. Another portion of the light is emitted from the back of the transparent substrate 241 and reflected by the reflector 251, then enters the transparent substrate 241 from the bottom for a second propagation until it reaches the top of the transparent substrate 241 and is emitted. The emitted light passes through the diffuser layer 235 and the first display area 231 and the second display area 232 with non-uniform light transmittance, so that the color images on the first display area 231 and the second display area 232 become luminous.

[0186] Meanwhile, because the edges of the first refractive area 247 and the second refractive area 248 are about 1-2 mm away from the two edges of the dividing line 242, the amount of light reaching the edge of the dividing line 242 is less than that of the refractive areas. After multiple propagations or refractions, these lights are emitted from the transparent substrate 241 and enter the gap of the dividing line 242 before reaching the area where the first display area 231 and the second display area 232 meet. Since these lights accumulate from the two refractive areas, the final amount of light reaches a level close to that emitted from other refractive areas, which adds a luminous line with the same brightness as other areas to the area where the first display area 231 and the second display area 232 meet. Finally, on the surface of the display module, a luminous color image is formed in the first display area 231 and a non-luminous color image is formed in the second display area 232.

[0187] Understandably, by reducing the size of the refraction area, the overlap of the light emitted after refraction at the junction of the two display areas is reduced, thus solving the problem of brighter fine lines at the junction of the two images and achieving the effect of displaying two uniformly luminous color images on the surface of the display module.

[0188] Reference Figure 11 The diagram shows an exploded view of the structure of another display module provided by the present invention.

[0189] In one possible implementation, the display module includes another display film 230 and another light guide plate 240.

[0190] The display film 230 includes two seamlessly connected first display areas 231 and 232. The first display area 231 includes a color image, which includes at least three image areas 233-235 with different transmittances. The second display area 232 includes a color image, which includes at least two image areas 237-238 with different transmittances. Image area 233 has the highest transmittance, for example, 100% transmittance. Image areas 234 and 237 have the highest transmittance, for example, 50%. Image areas 235 and 238 have the lowest transmittance, for example, 10%. The display film 230 also includes a diffuser layer 239 with a transmittance of about 70%. The diffuser layer 239 is a diffuser coating applied to the back of the display film 230, which is placed on the surface of the display module.

[0191] The light guide plate 240 includes a 2mm thick transparent substrate 241, a dividing line 259, two refractive areas 252 and 256, a first input port 245 and a second input port 246; the light guide plate 240 is placed below the display film 230 and above the reflector 251 and the side-emitting light source 260, and the positions of the refractive areas 252 and 256 are the same as the positions of the first display area 231 and the second display area 232, respectively.

[0192] Refraction region 252 includes at least three refraction regions 253-255 with different refractive indices, and refraction region 256 includes at least two refraction regions 257-258 with different refractive indices. Refraction region 253 has the highest refractive index, resulting in the most light emitted from it, which is referred to here as the maximum light intensity of 100%. Refraction regions 254 and 257 have intermediate refractive indices, resulting in the maximum light intensity of 40% emitted from them. Refraction regions 255 and 258 have the lowest refractive indices, resulting in the maximum light intensity of 10% emitted from them. Refraction regions 252 and 256 are respectively positioned below the first display region 231 and the second display region 232. Refraction regions 253, 254, 255, 257, and 258 correspond to image regions 233, 234, 235, 237, and 238 with different transmittances in the display region.

[0193] Different refractive index regions are achieved by designing the refractive index and density of the refractor. Here, we use white ink dots as refraction, and different refractive indices are achieved by arranging dots with different densities. Different refractive index regions are formed by applying white ink to the back of the transparent substrate 241 with different densities of refractors through the printing process.

[0194] When the two sets of LEDs 261 and 262 are turned on, the side-emitting light source 260 emits white light, which enters the transparent substrate 241 through the first input port 245 and the second input port 246 and propagates. Most of the light propagates to the refraction areas 252 and 256 for refraction, causing a portion of the light to be emitted vertically upwards from the transparent substrate 241 to the first display area 231 and the second display area 232. Another portion of the light is emitted from the back of the transparent substrate 241 and, after being reflected by the reflector 251, re-enters from the bottom into the transparent substrate 241. The light propagates a second time from the transparent substrate 241 until it reaches above the transparent substrate 241 and then is emitted. Finally, the amount of light emitted from the refractive regions 253, 254, 255, 257, and 258 is 100%, 40%, 10%, 40%, and 10%, respectively, representing the highest light intensity. The emitted light passes through the 70% transmittance diffuser layer 239 and the first display region 231 and the second display region 232, which are not single transmittance, causing the color images on the first display region 231 and the second display region 232 to become luminous. In particular, the light emitted by image areas 233, 234, 235, 237, and 238 with different transmittances on the first display area 231 and the second display area 232 are 70%, 14%, 0.7%, 14%, and 0.7%, respectively. On the luminous color image, the light quantity of the lowest area with a transmittance of 10% is 1:100 compared to the light quantity of the highest area with a transmittance of 100%, and the light quantity of the area with a transmittance of 50% is 1:5 compared to the light quantity of the highest area with a transmittance of 100%. These contrast ratios are greater than the contrast ratio of the color image itself.

[0195] It is understandable that by using a light guide with non-uniform light emission across the entire area, and by designing different amounts of light emitted from different areas, the contrast of the luminous image on the display surface can be improved or reduced.

[0196] Reference Figure 12 The diagram shows an exploded view of the structure of another display module provided by the present invention.

[0197] In one possible implementation, the side-emitting light source 280 includes a circuit board 289, two white side-emitting diodes 281 and 282, two touch sensor pads 283 and 284, and a touch light control chip 285.

[0198] The side-emitting light source 280 is positioned below the display film 230, the light guide plate 240, and the reflector 251. The touch sensor pads 283 and 284 are positioned corresponding to the first display area 231 and the second display area 232 on the display film 230, respectively, forming two display areas with touch button functions on the surface of the display module. The touch sensor pads 283 and 284 are formed by copper foil on the circuit board and are connected to the touch light control chip 285 through traces on the circuit board.

[0199] When the power is turned on by the side-emitting light source 280, the touch light control chip 285 immediately reads an initial capacitance value of the touch sensor pads 283 and 284. At the same time, the touch light control chip 285 uses a PWM signal with a duty cycle of 30% to turn on the light-emitting diodes 281 and 282. The light-emitting diodes 281 and 282 emit white light, which enters the transparent substrate 241 from the first input port 245 and the second input port 246 for propagation, refraction, and reflection. Finally, a portion of the light is emitted vertically upward from the transparent substrate 241 to the first display area 231 and the second display area 232. The emitted light passes through the diffuser layer 235 and the first display area 231 and the second display area 232 which do not have a single transmittance, making the color images on the first display area 231 and the second display area 232 illuminated and visible.

[0200] When a finger touches the display area 231 on the display film, the corresponding touch sensor 283 generates another capacitance value. If the difference between this capacitance value and the initial capacitance value is greater than a set threshold, the touch light control chip 285 determines that the display area 231 with touch button functionality has been activated. According to the previous design, the touch light control chip 285 activates LEDs 281 and 282; the duty cycle of the PWM signal of LED 281 is updated from 30% to 100%; the duty cycle of the PWM signal of LED 282 remains at 30%; the amount of white light emitted by LED 281 is more than three times that before, while the amount of white light emitted by LED 282 remains the same. These white light rays enter the transparent substrate 241, where they propagate, refract, and reflect. Finally, a portion of the light rays are emitted vertically upwards from the transparent substrate 241 to the first display area 231 and the second display area 232. The emitted light rays pass through the diffuser layer 235 and the non-uniform transmittance of the first and second display areas 231 and 232, making the color images on the first and second display areas 231 illuminated and visible. The color image in the first display area 231 is several times brighter than the color image in the second display area 232. Here, we refer to the color image in display area 231 as fully illuminated and the color image in display area 232 as partially illuminated.

[0201] It should be noted that those skilled in the art can set threshold values ​​according to actual needs, and no restrictions are imposed here.

[0202] When a finger touches the display area 231 on the display film again, the touch light control chip 285 determines that the display area 231 with touch button function has been touched. According to the previous design, the touch light control chip 285 turns on the light-emitting diodes 281 and 282. The duty cycle of the PWM signal of the light-emitting diode 281 is updated from 100% to 30%, and the duty cycle of the PWM signal of the light-emitting diode 282 remains at 30%. This white light is input into the transparent substrate 241 for propagation, refraction, and reflection. Finally, a portion of the light is emitted vertically upward from the transparent substrate 241 and passes through the diffuser layer 235 and the first display area 231 and the second display area 232 with non-uniform light transmittance, making the color images on the first display area 231 and the second display area 232 half-bright.

[0203] When a finger touches the display area 232 on the display film, the corresponding touch sensor 283 generates another capacitance value. Here, the difference between this capacitance value and the initial capacitance value is greater than the set threshold value, so the touch light control chip 285 determines that the display area 232 with touch button function has been touched. According to the previous design, the touch light control chip 285 turns on the light-emitting diodes 281 and 282. The duty cycle of the PWM signal of the light-emitting diode 282 is updated from 30% to 100%, while the duty cycle of the PWM signal of the light-emitting diode 281 remains at 30%. These white lights are input into the transparent substrate 241 for propagation, refraction, and reflection. Finally, a portion of the light is emitted vertically upward from the transparent substrate 241 to the first display area 231 and the second display area 232. The emitted light passes through the diffuser layer 235 and the first display area 231 and the second display area 232, which are not single-transmittance, making the first display area 231 half-bright and the color image in the second display area 232 fully bright.

[0204] It is understandable that by placing a touch-enabled chip on the circuit board of the light source of a display module, and using copper foil on the circuit board to arrange the touch sensor, a touch function can be given to a display module. This is an efficient and cost-effective touch display module solution.

[0205] Reference Figure 13 The diagram shows an exploded view of the structure of another display module provided by the present invention.

[0206] In one possible implementation, the display module includes: a display film 320, a backlight module including two light guide plates 350 and 390, a side-emitting light source 370, and a reflector 351.

[0207] The display film 320 includes three seamlessly connected display areas 321, 322, and 323, each display area including a color image. The display film 320 also includes a diffuser layer 326, which is formed by applying a diffuser coating to the back surface of the display film 320. The display film 320 is placed on the surface of the display module.

[0208] The side-emitting light source 370 includes a circuit board 374 and three white side-emitting diodes 371, 372 and 373.

[0209] The light guide plate 350 includes a transparent substrate 359, two dividing lines 357 and 358, a refractive area 356, and an input port 354; the light guide plate 390 includes a transparent substrate 399, two dividing lines 392 and 394, two refractive areas 391 and 393, and two input ports 396 and 397.

[0210] The light guide plate 350 is placed below the display film 320 and above the circuit board 374 and the side-emitting light source 370; the size of the refractive area 356 is slightly smaller than the size of the display area 322, for example, 0.5mm smaller on both sides; the position of the refractive area 350 is the same as the position of the display area 322; the light-emitting diode 371 is inserted into the input port 354, corresponding to the refractive area 356; the dividing lines 357 and 358 are two slits that separate the refractive area 356 from other areas.

[0211] The light guide plate 390 is positioned below the display film 320, the circuit board 374, and the side-emitting light source 370, and above the reflector 351. The dimensions of the refractive regions 391 and 393 are slightly smaller than or equal to the dimensions of the display regions 321 and 323, for example, 1mm smaller on each side. The positions of the refractive regions 391 and 393 are the same as those of the display regions 321 and 323. The light-emitting diodes 372 and 373 are inserted into the two input ports 396 and 397, respectively, corresponding to the refractive regions 391 and 393. The dividing lines 392 and 394 are two slits that separate the two refractive regions 391 and 393 from other regions. The lengths of the dividing lines 392 and 394 exceed the lengths of the refractive regions that need to be separated. In this way, very little light emitted by the light-emitting diode can propagate into the non-corresponding refractive regions.

[0212] When LED 371 is turned on and the other two LEDs 372 and 373 are turned off, the side-emitting light source 370 emits white light, which enters the transparent substrate 359 through the input port 354 and propagates. Most of the light propagates to the refraction area 356 for refraction, causing a portion of the light to be emitted vertically upward from the transparent substrate 359 to the display area 322. Another portion of the light is emitted from the back of the transparent substrate 359, passes through the transparent substrate 399, and is reflected by the reflector 351 before entering the transparent substrates 399 and 359 from the bottom for a second propagation until it reaches the top of the transparent substrate 359 and is then emitted. The emitted light passes through the diffuser layer 326 and the non-uniform transmittance display area 322, causing the color image on the display area 322 to become luminous.

[0213] Meanwhile, near the edges of dividing lines 357 and 358, a small portion of the light rays propagate or refract and exit from the transparent substrate 359 into the gap between dividing lines 357 and 358; some of these rays will hit the two areas where display areas 322 and 321 and 323 intersect, adding luminous fine lines to these two intersecting areas respectively.

[0214] Another portion of the light continues to propagate to the other side of the dividing lines 357 and 358 and then re-enters the transparent substrate 359, corresponding to the non-refractive areas of display areas 321 and 323. The amount of this light is extremely limited and negligible; therefore, the brightness of the color images on display areas 321 and 323 remains unchanged. Finally, on the surface of the display module, a luminescent color image is formed in display area 322 and the dividing lines 357 and 358, while two non-luminescent color images are formed in display areas 321 and 323 respectively.

[0215] When LED 372 is turned on and the other two LEDs 371 and 373 are turned off, the side-emitting light source 370 emits white light, which enters the transparent substrate 399 through the input port 396 and propagates. Most of the light propagates to the refraction area 391 for refraction, causing a portion of the light to be emitted vertically upward from the transparent substrate 399. This light passes through the transparent substrate 359 to the display area 321, while another portion of the light is emitted from the back of the transparent substrate 399, reflected by the reflector 351, and re-enters the transparent substrate 399 from the bottom for a second propagation until it reaches the top of the transparent substrate 359 and is then emitted. The emitted light passes through the transparent substrate 359, the diffuser layer 326, and the non-uniform transmittance display area 321, causing the color image on the display area 321 to become luminous.

[0216] Meanwhile, near the edge of the dividing line 392, a small portion of the light rays propagate or refract from the transparent substrate 399 and enter the gap of the dividing line 392; some of these rays will pass through the transparent substrate 359 and the diffused light layer 326 and reach the area where the display areas 321 and 322 meet, adding luminous fine lines to this area.

[0217] Another portion of the light will continue to propagate to the other side of the dividing line 392 and re-enter the transparent substrate 399, propagating within the non-refractive area of ​​the display area 322. The amount of these rays is extremely limited and negligible; therefore, the brightness of the color images on display areas 322 and 323 remains unchanged. Finally, on the surface of the display module, a luminous color image is formed in the display area 321 and the dividing line 357 area, while two non-luminous color images are formed in display areas 322 and 323 respectively.

[0218] When LED 373 is turned on and the other two LEDs 371 and 372 are turned off, the side-emitting light source 370 emits white light, which propagates into the transparent substrate 399 through the input port 397. Following the same principle, through propagation, refraction, and reflection, a luminous color image is finally formed on the surface of the display module in the display area 323 and the dividing line 358 area, while two non-luminous color images are formed in display areas 321 and 322 respectively.

[0219] Understandably, by placing light-emitting diodes on the front and back of the circuit board, the problem of narrow display areas of multiple display films can be solved.

[0220] Reference Figure 14 This illustrates yet another display module provided by the present invention, comprising yet another light guide plate.

[0221] In one possible implementation, the display module includes a light guide plate 390, a transparent substrate 319, a dividing line 315, four refractive areas 311, 312, 313 and 314, and two input ports 316 and 317.

[0222] The light guide plate 390 is positioned below the display film 320, the circuit board 374, and the side-emitting light source 370, and above the reflector 351. The dimensions of the refractive areas 311 and 313 are slightly smaller than or equal to the dimensions of the display areas 321 and 323, for example, 1 mm smaller on each side. The positions of the refractive areas 311 and 313 are the same as the positions of the display areas 321 and 323. The dimensions of the refractive areas 312 and 314 are slightly smaller than or equal to half the dimensions of the display area 322, for example, 1 mm smaller on each side. The positions of the refractive areas 312 and 314 are the same as the positions of the left and right halves of the display area 322. The light-emitting diodes 372 and 373 are inserted into the two input ports 316 and 317, respectively, corresponding to the refractive areas 311 and 312, and 313 and 314. The dividing line 315 is a gap that separates the refractive areas 311 and 312 and the refractive areas 313 and 314. The length of the dividing line 315 exceeds the length of the refractive areas to be separated. Simultaneously, the angle formed by the straight line from the top of the dividing line 315 to the corresponding light-emitting diode and the straight line perpendicular to the plane of the light-emitting diode is greater than 60 degrees; thus, very little light emitted by this light-emitting diode can propagate into non-corresponding refractive regions. The refractive indices of refractive regions 311 and 312 are different, so that after their corresponding light-emitting diodes are turned on, the amount of light emitted from refractive region 312 is a certain amount more than the amount of light emitted from refractive region 311. This amount of light is equal to the amount of light lost when passing through refractive region 356. Ultimately, when reaching the display film, the amount of light from refractive regions 311 and 312 is almost the same.

[0223] When LED 371 is turned on and the other two LEDs 372 and 373 are turned off, the side-emitting light source 370 emits white light, which enters the transparent substrate 359 through the input port 354 and undergoes propagation, refraction, and reflection. Finally, on the surface of the display module, a luminous color image is formed in the display area 322, the dividing lines 357 and 358, and two non-luminous color images are formed in the display areas 321 and 323 respectively.

[0224] When LED 372 is turned on and the other two LEDs 371 and 373 are turned off, the side-emitting light source 370 emits white light, which enters the transparent substrate 319 through the input port 316 and undergoes propagation, refraction, and reflection. Finally, on the surface of the display module, a semi-illuminated color image is formed in the display area 321 and the adjacent half of the display area 322, and a semi-non-illuminated color image is formed in the other half of the display area 322 and the display area 323.

[0225] When LEDs 372 and 371 are switched on and LED 373 is switched off, the side-emitting light source 370 emits white light, which enters the transparent substrates 319 and 359 through input ports 316 and 354. The light then propagates, refracts, and reflects, ultimately forming two semi-illuminating color images on the surface of the display module in display areas 321 and 322, and a non-illuminating color image in display area 323. The brightness of the illuminated color image in the half of display area 322 adjacent to display area 321 is almost twice that of the other illuminated color images.

[0226] Understandably, by superimposing refractive areas, the backlight module can control the local brightness within the backlight area, making it particularly suitable for backlight applications with multiple brightness levels or gradient effects, thus expanding the application scenarios of backlights.

[0227] Reference Figure 15 The diagram shows an exploded view of the structure of another display module provided by the present invention.

[0228] In one possible implementation, the display module includes: a hidden layer 410, a display film 430, a backlight module including two light guide plates 440 and 480, a light-shielding film 470 and a side-emitting light source 460, a light-shielding assembly 490, and a reflector 415.

[0229] The hidden layer 410 is black in color and has a light transmittance of about 13%. The back of the hidden layer 410 includes a double-sided adhesive frame 411. The hidden layer 410 is placed on the surface of the display module, above the light-shielding component 490. The double-sided adhesive frame 416 corresponds to the light-shielding outer frame 491.

[0230] The display diaphragm 430 includes two seamlessly connected display areas 431 and 432, each display area including a color image; display areas 431 and 432 respectively include a display area 433 and 434; the display diaphragm 430 is placed below the hidden layer 410 and inside the light-shielding assembly 490.

[0231] The side-emitting light source 460 includes a circuit board 469 and six white side-emitting diodes 461, 462, 463, 464, 465 and 466.

[0232] The light guide plate 440 includes a transparent substrate 441 with 95% light transmittance, a refractive area 442, and four input ports;

[0233] The light guide plate 480 includes a transparent substrate 481 with 95% light transmittance, two refractive regions 483 and 484, a dividing groove 482, and two input ports; the length of the dividing groove 482 exceeds the length of the refractive regions to be separated. Simultaneously, the angle formed by the straight line from the top of the dividing groove 482 to the light-emitting diode and the straight line perpendicular to the plane of the light-emitting diode is greater than 60 degrees; thus, very little light emitted by this light-emitting diode can propagate into non-corresponding refractive regions.

[0234] The light-blocking film 470 includes a light-blocking area 471 and two transparent areas 473 and 474; the light-blocking area 471 has low light transmittance, such as 20% light transmittance; the light-blocking area 471 has a certain reflectivity, such as 40% reflectance, while the transparent areas 473 and 474 are light-transmitting, such as 90% light transmittance.

[0235] The light-shielding assembly 490 includes a light-shielding frame 491, a light-shielding area 493, and a light-blocking wall 498; the light-shielding area 493 is slightly larger than the transparent substrate 481, for example, by 0.4 mm; the height of the light-blocking wall 498 is almost the same as the thickness of the light guide plate 480.

[0236] The reflector 415 is a highly reflective sheet, for example, 60% reflectivity; the front of the reflector 415 includes a double-sided adhesive frame 416; the reflector 415 is positioned below the light-shielding assembly 490, and the double-sided adhesive frame 416 corresponds to the bottom of the light-shielding outer frame 491.

[0237] The light guide plate 440 is placed below the display film 430 and inside the light shielding assembly 490, above the side-emitting light source 460 and the light shielding film 470; the size of the refractive area 442 is slightly larger or smaller than the size of the display areas 433 and 434, for example, 0.5 mm smaller on one side; the refractive area 442 exactly covers the display areas 431 and 432; the light-emitting diodes 461, 462, 463, and 464 are inserted into the four input ports of the light guide plate 440.

[0238] The light-shielding film 470 is placed below the light guide plate 440 and inside the light-shielding assembly 490. The transparent areas 473 and 474 correspond to the display areas 433 and 434, respectively. The size of the transparent areas 473 and 474 is the same as or slightly smaller than the size of the display areas 433 and 434, for example, 0.5mm smaller on one side.

[0239] The light guide plate 480 is positioned below the light-shielding film 470 and the side-emitting light source 460, inside the light-shielding assembly 490. Refraction areas 483 and 484 correspond to display areas 433 and 434; light-emitting diodes 465 and 466 are inserted into the two input ports of the light guide plate 480, corresponding to refraction areas 483 and 484 respectively. The light guide plate 480 is positioned inside the light-shielding assembly 490, and the dividing groove 482 corresponds to the light-blocking wall 498.

[0240] When all LEDs 461-466 are turned off and the light source does not emit light, ambient light shines on the surface of the display module. Of this ambient light, less than 13% passes through the hidden layer 410. After reflection from different areas of the display film, light guide plate, light-shielding film, and reflective paper behind the hidden layer 410, the remaining ambient light is almost invisible. Therefore, the different areas of the display film, light guide plate, light-shielding film, and reflective paper behind the hidden layer are virtually invisible. Under ambient light, only a black surface of the display module is visible.

[0241] When LEDs 461, 462, 463, and 464 are turned on, and LEDs 465 and 466 are turned off, the side-emitting light source 460 emits white light, which enters the transparent substrate 441 through the four input ports of the light guide plate 440 and propagates. Most of the light propagates to the refraction area 442 for refraction, causing a portion of the light to be emitted vertically upwards from the transparent substrate 441 to the display areas 433 and 434. A portion of the light also exits from the back of the transparent substrate 441, with most of it being reflected by the light-shielding area 471; approximately 40% of the light then returns from the bottom. Light enters the transparent substrate 441; a portion of the light continuously passes through transparent areas 473 and 474 and transparent substrate 481, and then, after being reflected by reflector 415, re-enters the transparent substrate 481 from the bottom, passes through transparent areas 473 and 474, and approximately 41% of the light enters the transparent substrate 441 from the bottom; this light entering the transparent substrate 441 from the bottom propagates a second time until it reaches above the transparent substrate 441 and is then emitted; the emitted light passes through display areas 431 and 432 and the hidden layer 410, causing the color images on display areas 431 and 432 to become luminous. Finally, on the surface of the display module, two luminous color images are formed in display areas 431 and 432; the brightness inside and outside display areas 433 and 434 is almost similar.

[0242] When LEDs 461, 462, 463, 464, and 465 are turned on and LED 466 is turned off, the side-emitting light source 460 emits white light. The light emitted by LEDs 461, 462, 463, and 464 propagates into the transparent substrate 441 through the four input ports of the light guide plate 440. Most of the light propagates to the refraction area 442 for refraction, causing a portion of the light to be emitted vertically upwards from the transparent substrate 441 to the display areas 433 and 434. Another portion of the light exits from the back of the transparent substrate 441, with approximately 40% of it being reflected by the light-shielding area 471 and re-entering the transparent substrate 441 from the bottom. A portion of the light continues to pass through the transparent area 473. The light enters the transparent substrate 481 from the bottom after being reflected by the reflector 415, passes through the transparent areas 473 and 474, and enters the transparent substrate 441 from the bottom. The light entering the transparent substrate 441 from the bottom propagates a second time until it reaches the top of the transparent substrate 441 and is then emitted. The emitted light passes through the display areas 431 and 432 and the hidden layer 410, causing the color images on the display areas 431 and 432 to become luminous. The brightness inside and outside the display areas 433 and 434 is almost the same.

[0243] The light emitted by the LED 465 enters the transparent substrate 481 through the input port corresponding to the light guide plate 480 and propagates. Most of the light propagates to the refraction region 483 for refraction, causing a portion of the light to be emitted vertically upwards from the transparent substrate 481. Another portion of the light is emitted from the back of the transparent substrate 481, reflected by the reflector 415, and re-enters the transparent substrate 481 from the bottom. After a second propagation, it reaches the top of the transparent substrate 481 and is then emitted. The light emitted from the transparent substrate 481 passes through the light-shielding film 470. 90% of the light can pass through the transparent areas 473 and 474. Outside the transparent areas 473 and 474, because they are not above the refraction region, the emitted light is very limited. In addition, only 10% of the light can pass through the light-shielding film 470, and the light outside the transparent areas 473 and 474 can be ignored.

[0244] Light passing through transparent area 473 then enters transparent substrate 441 from the bottom, propagates until it reaches above transparent substrate 441, and is then emitted. The emitted light passes through display area 433 and hidden layer 410, making the display area 433 within the luminescent color image on display area 431 brighter. Additionally, very little light emitted from LED 465 enters transparent substrate 481, bypasses the dividing groove 482, and propagates to refraction area 484; this amount is negligible. Finally, on the surface of the display module, two luminescent color images are formed in display areas 431 and 432; the brightness within display area 433 is much higher than the brightness outside, for example, twice as high; the brightness within and outside display area 434 is almost similar.

[0245] When LEDs 461, 462, 463, 464, and 466 are turned on, and LED 465 is turned off, the side-emitting light source 460 emits white light. Following this principle, the light emitted by LEDs 461, 462, 463, and 464 illuminates the color images on display areas 431 and 432; the brightness inside and outside display areas 433 and 434 is almost similar. The light emitted by LED 466 makes display area 434, the area within the illuminated color image on display area 432, brighter. Finally, two illuminated color images are formed on the surface of the display module, one in display areas 431 and the other in 432; the brightness inside and outside display area 433 is almost similar, but the brightness inside display area 434 is much higher than the outside, for example, twice as high.

[0246] Understandably, a backlight module, by arranging light-emitting diodes and corresponding front and rear light guide plates on the front and back of its circuit board, can provide a seamless display interface with varying brightness in local display areas, a background display interface composed of multiple seamless luminous color images, and a color display interface composed of the aforementioned background display interface and multiple bright small areas. These bright small areas can represent indicator lights or buttons.

[0247] Specifically, the display module includes another side-emitting light source 460, including a circuit board 469, four white side-emitting diodes 461, 462, 463 and 464, and two green side-emitting diodes 465 and 466.

[0248] In this way, the display module can provide a seamless display interface with different brightness and color in local display areas: a background display interface composed of multiple seamless luminous color images, and a color display interface composed of the aforementioned background display interface and multiple small greenish and bright areas.

[0249] Reference Figure 16The diagram shows an exploded view of the structure of another display module provided by the present invention.

[0250] In one possible implementation, the display module includes a display film 435 and another backlight module includes two light guide plates 440 and 485, a light-shielding film 475 and two side-emitting light sources 420 and 450, a light-shielding assembly 490, and a reflector 451.

[0251] The display diaphragm 435 includes two seamlessly connected display areas 436 and 437, each display area including a color image; display areas 436 and 437 each include a display area 438 and 439; the display diaphragm 435 is placed below the hidden layer 410 and inside the light-shielding assembly 490.

[0252] The light guide plate 485 includes a transparent substrate 486 with 95% light transmittance, two refractive regions 488 and 489, and a dividing groove 487; the length of the dividing groove 487 exceeds the length of the refractive regions to be separated. Simultaneously, the angle formed by the straight line from the top of the dividing groove 487 to the light-emitting diode and the straight line perpendicular to the plane of the light-emitting diode is greater than 60 degrees; thus, very little light emitted by this light-emitting diode can propagate into non-corresponding refractive regions.

[0253] The side-emitting light source 420 includes a circuit board 429, four white side-emitting diodes 421, 422, 423 and 424, and two pinholes 427 and 428.

[0254] The side-emitting light source 450 includes a circuit board 459, two white side-emitting diodes 455 and 456, two pins 457 and 458, two touch sensor pads 453 and 454, a touch light control chip 452, and a reflector 451; the circuit board 459 is slightly smaller than the light-shielding frame 491. The side-emitting light source 420 is placed below the light guide plate 440 and inside the light-shielding assembly 490, with the LEDs 421, 422, 423, and 424 inserted into the four input ports of the light guide plate 440. The light-shielding film 470 is placed below the light guide plate 440 and above the light guide plate 480; the light-shielding film 470 and the light guide plate 480 are placed next to the side-emitting light source 420; the positions of the refractive areas 488 and 489 on the light guide plate 480 correspond to the display areas 438 and 439 on the display film 435, respectively.

[0255] The side-emitting light source 450 is positioned below the light-shielding assembly 490 and recessed inside the light-shielding frame 491. The positions of the touch sensor pads 453 and 454 correspond to the display areas 438 and 439 on the display film 435, respectively. Two display areas with touch button functions are formed on the surface of the display module.

[0256] Touch sensor pads 453 and 454 are formed from copper foil on the circuit board. A side-emitting light source 420 is positioned above the side-emitting light source 450. Two pins 457 and 458 pass through pin holes 427 and 428 respectively and are soldered onto the side-emitting light source 420. The touch light control chip 452 is connected to the touch sensor pads 453 and 454, the side-emitting diodes 455 and 456, and the side-emitting diodes 421, 422, 423, and 424 via traces on the circuit board 459 and pins 457 and 458.

[0257] When the power is turned on by the side-emitting light source 450, the touch light control chip 452 immediately reads an initial capacitance value from the touch sensor pads 453 and 454. Simultaneously, the touch light control chip 452 turns on LEDs 421, 422, 423, and 424, and turns off LEDs 455 and 456. LEDs 421, 422, 423, and 424 emit white light, which propagates, refracts, and reflects through the four input ports of the light guide plate 440 into the transparent substrate 441. Finally, a portion of the light is emitted vertically upwards from the transparent substrate 441 to the display areas 436 and 437. The emitted light passes through the non-uniform transmittance of the display areas 436 and 437, making the color images on the display areas 436 and 437 illuminated and visible. The brightness inside and outside the display areas 438 and 439 is almost the same.

[0258] When a finger touches the display area 438 of the hidden layer 410, the corresponding touch sensor 453 generates another capacitance value. Here, the difference between this capacitance value and the initial capacitance value is greater than a set threshold value. Therefore, the touch light control chip 452 determines that the display area 436 with touch button functionality has been touched. According to the previous design, the touch light control chip 452 keeps LEDs 421, 422, 423, and 424 on, keeps LED 456 off, and updates LED 455. LEDs 421, 422, 423, and 424 emit white light, making the color images on display areas 436 and 437 illuminated and visible. White light emitted from LED 455 enters the transparent substrate 486. Most of the light propagates, refracts, and reflects along one side of the segmented groove 487, including the refractive area 488. Finally, a portion of the light is emitted vertically upwards from the transparent substrate 486, passing successively through the transparent area 478 of the light-shielding film 475, the transparent substrate 486, the display area 438, and the hidden layer 410, making the display area 438 within the luminescent color image on the display area 436 brighter. Finally, two luminescent color images are formed on the surface of the display module in the display areas 436 and 437. The brightness within the display area 438 is much higher than the brightness outside, for example, twice as high; the brightness within and outside the display area 439 is almost similar.

[0259] When a finger touches the display area 439 of the hidden layer 410, the touch light control chip 452 detects that the display area 439 with touch button function has been activated. According to the previous design, the touch light control chip 452 keeps LEDs 421, 422, 423, 424, and 455 active, and then activates LED 456. LEDs 421, 422, 423, and 424 emit white light, making the color images on display areas 436 and 437 illuminated and visible. The white light emitted by LED 455 makes the display area 438 within the illuminated color image on display area 436 brighter. The white light emitted by LED 456 propagates, refracts, reflects, and penetrates the transparent area 479 of the light-shielding film 475, the transparent substrate 486, the display area 439, and the hidden layer 410, making the display area 439 within the illuminated color image on display area 437 brighter. Finally, on the surface of the display module, two luminous color images are formed in display areas 436 and 437; the brightness within display areas 438 and 439 is much higher than the brightness outside, for example, twice as high.

[0260] It's understandable that by placing a touch-enabled chip on the circuit board of one of the light sources in a display module, and using copper foil on the circuit board to arrange the touch sensor, the display module can be given touch functionality. This is a highly efficient and cost-effective touch display module solution.

[0261] Reference Figure 17 The diagram shows an exploded view of the structure of another display module provided by the present invention.

[0262] In one possible implementation, the display module includes: a hidden layer 510, an upper light guide plate 540, an upper side-emitting light source 567, a display film 530, and a backlight module, wherein the backlight module includes a light guide plate 580, a side-emitting light source 567, and a reflector 515.

[0263] The hidden layer 510 is black in color and has a light transmittance of about 13%. The hidden layer 510 is placed on the surface of the display module.

[0264] The upper light guide plate 540 includes a transparent substrate 544 with 95% light transmittance, two refractive regions 541 and 542 with high light transmittance and low refractive index, and two input ports. The light transmittance of the refractive regions 541 and 542 is, for example, 85%, and the refractive index is, for example, 10%. The upper light guide plate 540 is positioned below the hidden layer 510.

[0265] The display diaphragm 530 includes two seamlessly connected display areas 531 and 532, each display area including a color image; the display diaphragm 530 is positioned below the upper light guide plate 540.

[0266] The side-emitting light source 560 includes a circuit board 569 and four white side-emitting diodes 563, 564, 565 and 566 on its back.

[0267] The upper light source 567 includes two white side-emitting diodes 561 and 562. The light-emitting diodes 561 and 562 are located on the front of the circuit board 569.

[0268] The light guide plate 580 includes a transparent substrate 584 with 95% light transmittance, two refractive regions 581 and 582, and four input ports; the length of the dividing line 583 exceeds the length of the refractive regions to be separated. Simultaneously, the angle formed by the straight line from the top of the dividing line 583 to the light-emitting diode and the straight line perpendicular to the plane of the light-emitting diode is greater than 60 degrees; thus, very little light emitted by this light-emitting diode can propagate into non-corresponding refractive regions.

[0269] The upper light guide plate 540 is positioned above the display film 530 and the side-emitting light source 560, and the light-emitting diodes 561 and 562 are inserted into the two input ports of the upper light guide plate 540.

[0270] The light guide plate 580 is positioned below the display film 530 and the side-emitting light source 560. The refractive areas 581 and 582 correspond to the display areas 531 and 532; the light-emitting diodes 563, 564, 565 and 566 are inserted into the four input ports of the light guide plate 580, respectively corresponding to the refractive areas 581 and 582.

[0271] Reflector 515 is a highly reflective sheet, for example, 60% reflectivity; reflector 515 is placed below light guide plate 580.

[0272] When all LEDs 561-566 are turned off and the light source does not emit light, ambient light shines on the surface of the display module. Of this ambient light, 13% passes through the hiding layer 510. After reflection from different areas of the light guide plate, display film, and reflective paper behind the hiding layer 510, less than 1% of the ambient light passes through the hiding layer 510 again. Therefore, the different areas of the display film, light guide plate, light-shielding film, and reflective paper behind the hiding layer are almost invisible. Under ambient light, only a black surface of the display module is visible.

[0273] When LEDs 563, 564, 565, and 566 are turned on, and LEDs 561 and 562 are turned off, the LEDs 563, 564, 565, and 566 emit white light, which propagates, refracts, and reflects through the four input ports of the light guide plate 580 into the transparent substrate 584. Finally, a portion of the light is emitted vertically upwards from the transparent substrate 584 to the display film 530. The light passes through the non-uniform transmittance display areas 531 and 532, making the color images on them luminous and visible. The light passing through the display film 530 then passes through the upper light guide plate 540 and the hidden layer 510. There will be a 10% difference in the amount of light inside and outside the refraction areas 541 and 542, a difference that is difficult to perceive with the naked eye. Finally, on the surface of the display module, two luminous color images are formed in the display areas 531 and 532.

[0274] When LEDs 561, 563, 564, 565, and 566 are turned on and LED 562 is turned off, the upper light source 567 and the side light source 560 emit white light. The light emitted by LEDs 563, 564, 565, and 566, as described above, can make the color images on display areas 531 and 532 illuminate.

[0275] The light emitted by the LED 561 enters the transparent substrate 544 through the input port corresponding to the upper light guide plate 540 and propagates. Most of the light propagates to the refraction region 541 for refraction, causing a portion of the light to be emitted vertically upwards from the transparent substrate 544. Another portion of the light exits from the back of the transparent substrate 544, is reflected by the display film 530, and re-enters the transparent substrate 544 from the bottom, undergoing a second propagation until it reaches the top of the transparent substrate 544 and is then emitted. This light passes through the hidden layer 510, forming a white luminescent pattern on the display surface shaped like the refraction region 541; in this case, it is a solid white luminescent circle. A very small portion of the light propagates within the transparent substrate 544 to the refraction region 542. This amount is negligible due to the low refractive index of the refraction region 542. Finally, two luminescent color images are formed on the surface of the display module in the display regions 531 and 532, with the luminescent color image in display region 531 including a solid white luminescent circle.

[0276] When LEDs 562, 563, 564, 565, and 566 are turned on and LED 561 is turned off, the upper light source 567 and the side light source 560 emit white light. The light emitted by LEDs 563, 564, 565, and 566 can make the color images on display areas 531 and 532 glow.

[0277] The light emitted by the LED 562 enters the transparent substrate 544 through the input port corresponding to the upper light guide plate 540, where it propagates and is refracted, causing a portion of the light to be emitted vertically upwards from the transparent substrate 544. This light passes through the hidden layer 510, forming a white luminescent pattern on the display surface shaped like the refractive area 542, which is a white luminescent rectangle. Finally, two luminescent color images are formed on the surface of the display module in display areas 531 and 532, where the luminescent color image in display area 532 includes a white luminescent rectangle.

[0278] In this way, by adding a light guide plate with a pattern using high light transmittance and low refractive index as the refractive area, the display module can provide seamless color display interfaces with different content: a background display interface composed of multiple seamless luminous color images, and a color display interface combining the aforementioned background display interface and the pattern on the light guide plate. These bright small areas can represent indicator lights or buttons.

[0279] In one possible implementation, the display module further includes: a hidden layer, an upper light guide plate, and an upper light-emitting light source; the hidden layer has a low light transmittance of less than 30%; the hidden layer is disposed on the surface of the display module; the upper light-emitting light source includes light-emitting diodes, and side light-emitting diodes are disposed on the same circuit board as the upper light-emitting light source, or the side light-emitting diodes are disposed on the circuit board of the side light-emitting light source; the upper light guide plate includes a transparent substrate, a refractive area with high light transmittance and low refractive index, and an input port; the light guide plate is placed between the hidden layer and the display film; the light-emitting diodes in the upper light-emitting light source are disposed at the input port of the upper light guide plate.

[0280] Reference Figure 18 This illustrates yet another display module provided by the present invention, comprising yet another display film with a hidden layer.

[0281] In one possible implementation, the display film 535 includes a hidden layer 538 and two seamlessly connected display areas 536 and 537, each display area including a color image; the hidden layer 538 is black in color and has a light transmittance of approximately 30%; the hidden layer 538 is placed on the surface of the display film 535. The display film 530 is positioned below the light guide plate 540 and above the light guide plate 580 and the side-emitting light source 560.

[0282] When all LEDs 561-566 are turned off and the light source does not emit light, the display module has only one black surface visible under ambient light.

[0283] When LED 561 is turned on, LEDs 562, 563, 564, 565, and 566 are turned off. Light emitted from LED 561 enters the transparent substrate 544 through the corresponding input port of the light guide plate 540. Most of the light propagates to the refraction region 541 for refraction, causing a portion of the light to be emitted vertically upwards from the transparent substrate 544. This light passes through the hidden layer 510, forming a white luminous pattern on the display surface shaped like the refraction region 541; in this case, it is a solid white luminous circle. A portion of the light emitted from the back of the transparent substrate 544 is almost completely absorbed by the hidden layer 538 on the display film 535, with almost no reflection. Finally, on the surface of the display module, a solid white luminous circle is formed on a black background in display regions 531 and 532; the position of the solid white luminous circle corresponds to the position of the refraction region 541.

[0284] Understandably, by adding a hidden layer to the display film, the display module can prevent the pattern on the light guide plate from being interfered with by the light emission from the color film behind it, making the pattern on the light guide plate more uniform and more visible.

[0285] Reference Figure 19The diagram shows an exploded view of the structure of another display module provided by the present invention.

[0286] In one possible implementation, the display module includes a hidden layer 510, a touch film 520, a display film 530, a backlight module including two light guide plates 540 and 580, a side-emitting light source 570, and a reflector 515.

[0287] The touch diaphragm 520 includes a transparent area 523 with a light transmittance greater than 90%, two transparent touch sensing areas 521 and 522, and an FPC connection terminal 524; the touch diaphragm 520 is placed below the hidden layer 510 and above the light guide plate 540.

[0288] The side-emitting light source 570 includes a circuit board 569, six white side-emitting diodes 571, 572, 573, 574, 575, and 576, a touch light control chip 577, and an FPC connector 578. The white side-emitting diodes 571 and 572 are located on the front of the circuit board 569, while the white side-emitting diodes 573, 574, 575, and 576 are located on the back of the circuit board 569.

[0289] A side-emitting light source 570 is positioned below the light guide plate 540 and the display film 530, and above the light guide plate 580. LEDs 571 and 572 are inserted into two input ports of the light guide plate 540, and LEDs 573, 574, 575, and 576 are inserted into four input ports of the light guide plate 580. The FPC connection terminal 524 of the touch film 520 bypasses the light guide plate 540 and the display film 530 and is inserted into the FPC connector 578, connecting to the touch lighting control chip 577 via traces on the circuit board 569. The transparent touch sensing areas 521 and 522 correspond to the display areas 531 and 532 on the display film 530, respectively. The transparent area 523 covers the entire display areas 531 and 532. Two display areas with touch button functionality are formed on the surface of the display module.

[0290] The transparent touch-sensing areas 521 and 522 are formed by PEDOT transparent conductive ink, ITO transparent conductive material, or nano silver mesh, etc.

[0291] When the power is turned on by the side-emitting light source 570, the touch light control chip 577 immediately reads an initial capacitance value from the transparent touch sensing areas 521 and 522. Simultaneously, according to the previous design procedure, the touch light control chip 577 turns on LEDs 573, 574, 575, and 576, and turns off LEDs 571 and 572. LEDs 573, 574, 575, and 576 emit white light, making the color images on display areas 531 and 532 illuminated and visible. Finally, two illuminated color images are formed on the surface of the display module in display areas 531 and 532.

[0292] When a finger touches the display area 531 of the hidden layer 510, the corresponding transparent touch sensing area 521 generates another capacitance value. Here, the difference between this capacitance value and the initial capacitance value is greater than a set threshold value, so the touch light control chip 577 determines that the display area 531 with touch button function has been touched. According to the previous design, the touch light control chip 577 keeps LEDs 573, 574, 575, and 576 on, keeps LED 572 off, and updates LED 571. The light emitted by LEDs 573, 574, 575, and 576, as described above, can make the color images on display areas 531 and 532 glow. The light emitted by LED 571 enters the transparent substrate 544 through the corresponding input port of the light guide plate 540, propagates and refracts, causing a portion of the light to be emitted vertically upwards from the transparent substrate 544. This light passes through the hidden layer 510 and forms a white luminous pattern on the display surface, shaped like the refraction area 541; here, it is a solid white luminous circle. Finally, on the surface of the display module, two luminous color images are formed in display areas 531 and 532, wherein the luminous color image in display area 531 includes a white luminous solid circle.

[0293] When a finger touches the display area 532 of the hidden layer 510, the touch light control chip 577 detects that the display area 532 with touch button functionality has been activated. As per the previous design, the touch light control chip 577 keeps LEDs 571, 573, 574, 575, and 576 active, and then activates LED 572. LEDs 573, 574, 575, and 576 emit white light, making the color images on display areas 531 and 532 illuminated and visible. The white light emitted by LED 571 can form a white luminous pattern on the display surface, shaped like the refraction area 541 (in this case, a solid white luminous circle). The white light emitted by LED 572 can form a white luminous pattern on the display surface, shaped like the refraction area 542 (in this case, a white luminous rectangle). Finally, on the surface of the display module, two luminous color images are formed in display areas 531 and 532; wherein the luminous color images in display areas 531 and 532 respectively include a white luminous solid circle and a white luminous rectangle.

[0294] Understandably, by placing a touch-enabled chip on the circuit board of one of the light sources in a display module, and adding a touch diaphragm, the display module can be given touch functionality. This is another efficient and cost-effective touch display module solution.

[0295] In the above-mentioned implementation schemes, the light source sometimes uses one, multiple, or a group of light-emitting diodes. A group of light-emitting diodes can be composed of one or more light-emitting diodes. This is just an example and not a limitation. Actual products will use one or more light-emitting diodes depending on the requirements.

[0296] In the side-emitting light sources described in the above-described embodiments, the LEDs are not on the same plane and are placed on the front and back sides of the circuit board, respectively. This is only one implementation method; actual products can also be implemented using other methods. For example, the LEDs can be placed on two different circuit boards, and these two circuit boards can be connected together using pins or other connection methods.

[0297] The touch light control chip described in the above-mentioned implementation schemes is an integrated touch and light control function module, which can be composed of different modules. For example, a single chip may have both touch and microcontroller functions, or a single touch chip and a single microcontroller may exist. The microcontroller can directly control the light, or control the light through a transistor or LED driver chip.

[0298] The above description is merely an embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of the present invention should be included within the scope of the claims of the present invention.

Claims

1. A display module, characterized in that, include: Layered display films and backlight modules; The display film is disposed on the surface of the display module. The display film includes at least a first display area and a second display area. The first display area and the second display area are connected or overlapped without gaps. The first display area is used to display first content, and the second display area is used to display second content. The backlight module includes at least a first backlight area, a second backlight area, and an isolator. The first backlight area and the second backlight area are connected or overlapped. The first backlight area is located below the first display area, and the second backlight area is located below the second display area. The light emitted by each backlight area is upward and can completely cover its corresponding display area. The isolator is located below the first backlight area and the second backlight area. When only the first backlight area emits light, the number of stray light rays that propagate to the area outside the first backlight area and intersect with the second backlight area is less than a preset proportion of the total number of light rays propagated by the first backlight area. The backlight module includes a light-shielding component and a positive light source; The light-shielding component includes a light-shielding frame and an isolation member disposed in the light-shielding frame. The isolation member is a light-blocking wall, which is either an open wall or a closed enclosure. The height of the light-blocking wall is lower than the height of the light-shielding frame, and the thickness of the light-blocking wall gradually decreases in the height direction.

2. The display module according to claim 1, characterized in that, The light-shielding component is positioned above the positive light source and below the display film; The positive light source includes a circuit board, a first front light-emitting diode and a second front light-emitting diode, and both the first front light-emitting diode and the second front light-emitting diode include at least one set of front light-emitting diodes; The thickness of the top of the light-blocking wall is 0.2 mm to 0.6 mm. The light-blocking wall separates the first backlight area and the second backlight area. The first backlight area is provided with the first front light-emitting diode, and the second backlight area is provided with the second front light-emitting diode.

3. The display module according to claim 2, characterized in that, The backlight module includes a light-shielding component and a light guide plate component; The light guide plate assembly includes a first light guide plate and a second light guide plate connected to each other, and neither the first light guide plate nor the second light guide plate has a chamfer at the connection point; The light-shielding component is positioned above the positive light source and below the display film; The light-shielding component includes a light-shielding frame with open ends on the left and right sides and three light-blocking walls. The light-shielding frame is provided with steps, and the light guide plate assembly is provided on the steps and the three light-blocking walls. The surface of the light guide plate assembly is flush with the surface of the light-shielding frame. The thickness of each light-blocking wall gradually decreases in the height direction. The three light-blocking walls are respectively set at both ends and inside the light-shielding frame. The three light-blocking walls separate the first backlight area and the second backlight area. The first front light-emitting diode is set in the first backlight area, and the front light-emitting diode is set in the second backlight area.

4. A display module, characterized in that, include: Layered display films and backlight modules; The display film is disposed on the surface of the display module. The display film includes at least a first display area and a second display area. The first display area and the second display area are connected or overlapped without gaps. The first display area is used to display first content, and the second display area is used to display second content. The backlight module includes at least a first backlight area, a second backlight area, and an isolator. The first backlight area and the second backlight area are connected or overlapped. The first backlight area is located below the first display area, and the second backlight area is located below the second display area. The light emitted by each backlight area is upward and can completely cover its corresponding display area. The isolator is located below the first backlight area and the second backlight area. When only the first backlight area emits light, the number of stray light rays that propagate to the area outside the first backlight area and intersect with the second backlight area is less than a preset proportion of the total number of light rays propagating from the first backlight area. The backlight module includes a light guide plate, a reflector, and a side-emitting light source. The light guide plate includes a transparent substrate, an isolator, a first refractive region, a second refractive region, a first input port, and a second input port, wherein the isolator is a dividing line; The dividing line is a semi-permeable or fully permeable slit on the transparent substrate, and the dividing line separates the first refractive area and the second refractive area to form the first backlight area and the second backlight area.

5. The display module according to claim 4, characterized in that, The side-emitting light source includes a circuit board, a first side-emitting diode and a second side-emitting diode, and both the first side-emitting diode and the second side-emitting diode include at least one set of side-emitting diodes. The width of the dividing line is less than 1 mm, the depth of the dividing line is greater than one-quarter of the thickness of the transparent substrate, the length of the dividing line is greater than the length of the first refractive region and the second refractive region, and the angle formed by the straight line from the top of the dividing line to the light-emitting diode and the straight line perpendicular to the plane of the light-emitting diode is greater than 60 degrees. The light guide plate is disposed above the reflector and the side-emitting light source, and the light guide plate is disposed below the display film; The size of the first refractive region is less than or equal to the size of the first display region, and the size of the second refractive region is less than or equal to the size of the second display region; The first side-emitting diode is disposed in the first input port, corresponding to the first refractive region, and the second side-emitting diode is disposed in the second input port, corresponding to the second refractive region; The reflector covers the first refractive area and the second refractive area.

6. A display module, characterized in that, include: Layered display films and backlight modules; The display film is disposed on the surface of the display module. The display film includes at least a first display area and a second display area. The first display area and the second display area are connected or overlapped without gaps. The first display area is used to display first content, and the second display area is used to display second content. The backlight module includes at least a first backlight area, a second backlight area, and an isolator. The first backlight area and the second backlight area are connected or overlapped. The first backlight area is located below the first display area, and the second backlight area is located below the second display area. The light emitted by each backlight area is upward and can completely cover its corresponding display area. The isolator is located below the first backlight area and the second backlight area. When only the first backlight area emits light, the number of stray light rays that propagate to the area outside the first backlight area and intersect with the second backlight area is less than a preset proportion of the total number of light rays propagated by the first backlight area. The backlight module includes a first light guide plate, a second light guide plate, a reflector, and a side-emitting light source; The side-emitting light source includes a circuit board, a first side-emitting diode, and a second side-emitting diode, wherein the first side-emitting diode and the second side-emitting diode are not on the same plane; The first light guide plate includes a first transparent substrate, a first dividing line, a first refractive area, and a first input port; The second light guide plate includes a second transparent substrate, a second dividing line, a second refractive area, and a second input port; The first dividing line and the second dividing line are gaps respectively provided on the first transparent substrate and the second transparent substrate. The first dividing line separates the first refractive region, and the second dividing line separates the second refractive region. The width of the first dividing line and the second dividing line is less than 1 mm. The depth of the first dividing line and the second dividing line is greater than one-quarter of the thickness of the first transparent substrate and the second transparent substrate, respectively. The length of the first dividing line is greater than the length of the first refractive region. The angle formed by the straight line from the top of the first dividing line to the first side light-emitting diode and the straight line perpendicular to the plane of the first side light-emitting diode is greater than 60 degrees. The length of the second dividing line is greater than the length of the second refractive region. The angle formed by the straight line from the top of the second dividing line to the second side light-emitting diode and the straight line perpendicular to the plane of the second side light-emitting diode is greater than 60 degrees. The first light guide plate and the second light guide plate overlap and are disposed above the reflector and below the display film; The first refractive area and the second refractive area do not overlap with each other. The first refractive area corresponds to the first backlight area of ​​the backlight module, and the second refractive area corresponds to the second backlight area of ​​the backlight module. The reflector covers the first refractive region and the second refractive region; The first side-emitting diode is disposed in the first input port, corresponding to the first refractive region, and the second side-emitting diode is disposed in the second input port, corresponding to the second refractive region.

7. A display module, characterized in that, include: Layered display films and backlight modules; The display film is disposed on the surface of the display module. The display film includes at least a first display area and a second display area. The first display area and the second display area are connected or overlapped without gaps. The first display area is used to display first content, and the second display area is used to display second content. The backlight module includes at least a first backlight area, a second backlight area, and an isolator. The first backlight area and the second backlight area are connected or overlapped. The first backlight area is located below the first display area, and the second backlight area is located below the second display area. The light emitted by each backlight area is upward and can completely cover its corresponding display area. The isolator is located below the first backlight area and the second backlight area. When only the first backlight area emits light, the number of stray light rays that propagate to the area outside the first backlight area and intersect with the second backlight area is less than a preset proportion of the total number of light rays propagated by the first backlight area. The first backlight area and the second backlight area are overlapped, and the backlight module includes a first light guide plate, a second light guide plate, a reflector, and a side-emitting light source; The side-emitting light source includes a circuit board, a first side-emitting diode, and a second side-emitting diode, wherein the first side-emitting diode and the second side-emitting diode are not on the same plane; The first light guide plate includes a first transparent substrate, a first dividing line, a first refractive area, and a first input port; The second light guide plate includes a second transparent substrate, a second dividing line, a second refractive area, and a second input port; The first light guide plate and the second light guide plate are overlapped above the reflector. The first refractive area and the second refractive area overlap. The first refractive area corresponds to the first backlight area of ​​the backlight module, and the second refractive area corresponds to the second backlight area of ​​the backlight module. The reflector covers the first refractive region and the second refractive region; The first side-emitting diode is disposed in the first input port, corresponding to the first refractive region, and the second side-emitting diode is disposed in the second input port, corresponding to the second refractive region.

8. The display module according to claim 7, characterized in that, Also includes: Hidden layer, upper light guide plate, upper light source; The light transmittance of the hidden layer is less than 30%; the hidden layer is disposed on the surface of the display module. The upper light source includes a set of side light-emitting diodes. The side light-emitting diodes of the upper light source are disposed on the circuit board of the side light source of the backlight module, or the side light-emitting diodes of the upper light source are disposed on the circuit board of the upper light source. The upper light guide plate includes a transparent substrate, a refractive area with high light transmittance and low refractive index, and an input port; The light guide plate is placed between the hidden layer and the display film; The side-emitting diode in the upper light source is disposed at the input port of the upper light guide plate.

9. The display module according to claim 7, characterized in that, The display film includes at least two seamlessly connected first display areas and second display sub-areas. The first display area includes a first display sub-area and a second display sub-area, and the first display sub-area and the second display sub-area have different light transmittances. The second display area includes a third display sub-area and a fourth display sub-area, and the third display sub-area and the fourth display sub-area have different light transmittances. The backlight module includes at least a first backlight area and a second backlight area. The first backlight area includes a first backlight sub-area and a second backlight sub-area. The brightness of the first backlight sub-area and the second backlight sub-area is different. The second backlight area includes a third backlight sub-area and a fourth backlight sub-area. The brightness of the third backlight sub-area and the fourth backlight sub-area is different. The first display area and the second display area correspond to the first backlight area and the second backlight area, respectively; The first display sub-region, the second display sub-region, the third display sub-region, and the fourth display sub-region correspond to the first backlight sub-region, the second backlight sub-region, the third backlight sub-region, and the fourth backlight sub-region, respectively. The brightness of the backlight sub-area is directly proportional to the light transmittance of the corresponding display sub-area.

10. The display module according to claim 7, characterized in that, Also includes: Touch diaphragms, touch chips, and FPC connectors; The touch film includes a transparent area, a touch-sensing area, and an FPC connection terminal. The touch film is disposed below the hidden layer. The display film has a display area corresponding to the touch-sensing area, and the touch-sensing area is disposed below the display area corresponding to the touch-sensing area. The touch chip and the FPC connector are disposed on the circuit board; the touch sensing area is formed by a conductive medium, wherein the conductive medium forming the touch sensing area is PEDOT, ITO, or silver nanowires; The FPC connection terminal is inserted into the FPC connector.

Images