Display module and clock-in clock

Abstract

The display module comprises a lamp panel, a light barrier, a light uniformizing plate and a panel, LED lamp beads are installed on the front face of the lamp panel, the light barrier is installed on the front face of the lamp panel, a penetrating through hole is formed in the light barrier, the through hole forms a light outlet in the front face of the light barrier, the LED lamp beads are located in the through hole, the light uniformizing plate is installed on the front face of the light barrier, and the panel is arranged on the front face of the light barrier. The light uniformizing plate comprises a light-transmitting area, the position of the light-transmitting area is aligned with the light outlet, the light-transmitting area is used for forming a graph to be displayed, the panel is installed on the front face of the light uniformizing plate, the panel is made of semitransparent materials, and the light uniformizing plate is covered with the panel. According to the display module, the semitransparent panel is additionally arranged on the light uniformizing plate, the boundaries of the light-transmitting area and other areas on the light uniformizing plate can be blurred, meanwhile, the via holes and the LED lamp beads exposed in the via holes can be blurred, and therefore the appearance consistency of the display module is improved when the LED lamp beads are extinguished, the contrast ratio of displayed graphs can be improved through the display module, and the display effect is improved. And meanwhile, the attractiveness of the panel is improved.

Description

Technical Field

[0001] The present application relates to the field of display screens, and in particular to a display module and a time clock. Background Art

[0002] A time clock is used to print the time of going to and from get off work on a cardboard so as to record the attendance of employees. In the related art, the display panel of a time clock is often implemented by an LCD (Liquid Crystal Display) with a backlight.

[0003] On the one hand, low-cost LCDs generally only have two modes: positive display (dark graphics and light LCD panel) and negative display (light graphics and dark LCD panel). The dark color of LCD is not pure black, so the contrast between the display area and other areas of the LCD panel is not high. On the other hand, since the dark and light areas of the LCD are evenly illuminated when backlight is used, the contrast improvement of the graphics by the backlight is limited.

[0004] To this end, some related technologies use LED-based panels. Although using LED lamp beads to form graphics can improve contrast and make the graphics easy to identify, after the LED lamp beads are turned off, the holes for light transmission can still be observed on the light-distributing sheet, which makes the appearance consistency of the panel poor and not beautiful enough. Summary of the invention

[0005] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes a display module and a time clock, wherein the display module can improve the contrast of displayed graphics and improve the aesthetics of the panel.

[0006] According to the display module provided in the present application, it includes a light board, a light baffle, a light equalizing plate and a panel, the light board is installed with LED lamp beads on the front side, the light baffle is installed on the front side of the light board, the light baffle is provided with a through hole, the through hole forms a light outlet on the front side of the light baffle, the LED lamp beads are located in the through hole, the light equalizing plate is installed on the front side of the light baffle, the light equalizing plate includes a light-transmitting area, the position of the light-transmitting area is aligned with the light outlet, the light-transmitting area is used to form a pattern to be displayed, and the panel is installed on the front side of the light equalizing plate, the panel is made of translucent material, and the panel covers the light equalizing plate.

[0007] According to the display module provided by the present application, at least the following technical effects are achieved: the light emitted by the LED lamp beads is selectively irradiated on the light-transmitting area of ​​the light-emitting plate through the via holes, and after being diffused by the light-emitting plate, the light-transmitting area is evenly illuminated to form a pattern to be displayed. On the one hand, the brightness of the pattern can be increased by increasing the brightness of the LED lamp beads, and on the other hand, other areas of the light-emitting plate are not light-transmitting, thereby improving the contrast of the pattern; by adding a translucent panel to the light-emitting plate, the boundary between the light-transmitting area and other areas of the light-emitting plate can be blurred, and the via holes and the LED lamp beads exposed in the via holes can also be blurred, thereby improving the appearance consistency of the display module when the LED lamp beads are off. Therefore, the display module can improve the contrast of the displayed pattern and improve the aesthetics of the panel at the same time.

[0008] According to some embodiments of the present application, a light-shielding layer is printed on the front side of the light-scattering plate, and the area on the light-scattering plate where the light-shielding layer is not printed forms the light-transmitting area.

[0009] According to some embodiments of the present application, the color of the panel, the light blocking plate and the color of the light shielding layer are the same.

[0010] According to some embodiments of the present application, the sidewall of the via hole is coated with a light absorbing layer, or the light blocking plate is made of a light absorbing material.

[0011] According to some embodiments of the present application, the via hole forms a light entrance on the back side of the light blocking plate, and the size of the light entrance matches the size of the LED lamp bead.

[0012] According to some embodiments of the present application, a recessed groove is provided on the front side of the light blocking plate, and the light homogenizing plate is embedded in the recessed groove.

[0013] According to some embodiments of the present application, a button hole is provided on the panel.

[0014] According to some embodiments of the present application, the display module further includes a button and a button panel, the button panel is communicatively connected to the light panel, the button is mounted on the button panel, and the position of the button is aligned with the position of the button hole.

[0015] According to some embodiments of the present application, a speaker hole is provided on the panel, and the display module further includes a buzzer, and the position of the buzzer is aligned with the position of the speaker hole.

[0016] The time clock provided in the present application includes the display module provided in the present application.

[0017] The time recorder provided in the present application includes the display module provided in the present application, so the time recorder correspondingly has the beneficial effects provided by the display module, which will not be elaborated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0019] Figure 1 is a schematic diagram of the structure of a time recorder according to an embodiment of the present application;

[0020] Figure 2 is a schematic diagram of a partial structure of a time recorder according to an embodiment of the present application;

[0021] Figure 3 is a schematic diagram of a partial structure of a time recorder according to an embodiment of the present application;

[0022] Figure 4 4 is a cross-sectional schematic diagram of a light blocking plate according to an embodiment of the present application.

[0023] Reference numerals:

[0024] Housing 100;

[0025] Display module 200, lamp board 210, LED lamp beads 211, light shielding plate 220, via hole 221, light averaging plate 230, light transmission area 231, panel 240, key hole 241, speaker hole 242, key 250, key board 260, buzzer 270;

[0026] Printing module 300. DETAILED DESCRIPTION

[0027] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0028] In the description of the present application, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0029] In the description of this application, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed", etc. are understood to exclude the number itself, and "above", "below", "within", etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0030] In the description of this application, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in this application based on the specific content of the technical solution.

[0031] Time clocks are used to print the time of get off work and leave on cardboard to record the attendance of employees. Compared with electronic attendance devices, time clocks do not need to be equipped with a calculator for processing data, so they are more suitable for low-cost attendance work with small data volumes.

[0032] Reference Figure 1 and Figure 2 The time clock proposed in the present application includes a shell 100, and a display module 200 and a printing module 300 installed on the shell 100. The display module 200 is used to display graphics (such as date, time, attendance mode, etc.), and the printing module 300 is used to print attendance content on cardboard.

[0033] In some related technologies, a time clock uses an LCD with a backlight to display graphics, but there is a problem that the contrast between dark and light colors of the LCD is not high.

[0034] In other related technologies, time clocks use LED lamp beads to display graphics. In this case, the display module often uses a light-emitting plate (also called a diffuser) as the outermost panel. The light-emitting plate has a light-transmitting area and a light-impermeable area. The light-transmitting area constitutes the graphics. The light-emitting plate makes the light irradiated on the back uniform through refraction, reflection, scattering, etc., and then displays it in the light-transmitting area on the front, while the light-impermeable area does not emit light, thereby displaying the graphics with high contrast.

[0035] However, when the LED lamp beads are turned off, there will be a clear boundary between the light-transmitting area and the opaque area. If the thickness of the light-emitting plate is thin, the structure on the back of the light-emitting plate can be vaguely observed in the light-transmitting area, resulting in poor consistency in appearance and insufficient aesthetics.

[0036] For this purpose, further reference Figure 3 ,exist Figure 3In the figure, the direction indicated by the arrow is taken as the forward direction of the present application. The display module 200 proposed in the present application includes a lamp board 210, a light baffle 220, a light-distributing plate 230 and a panel 240. The front of the lamp board 210 is installed with an LED lamp bead 211. The light baffle 220 is installed on the front of the lamp board 210. The light baffle 220 is provided with a through hole 221. The through hole 221 forms a light outlet on the front of the light baffle 220. The LED lamp bead 210 is located in the through hole 221. The light-distributing plate 230 is installed on the front of the light baffle 220. The light-distributing plate 230 includes a light-transmitting area 231. The position of the light-transmitting area 231 is aligned with the light outlet. The light-transmitting area 231 is used to form a pattern to be displayed. The panel 240 is installed on the front of the light-distributing plate 230. The panel 240 is made of translucent material and covers the light-distributing plate 230.

[0037] The light emitted by the LED lamp bead 211 selectively irradiates the light-transmitting area 231 of the light-diffusing plate 230 through the via 221, and evenly illuminates the light-transmitting area 231 after being diffused by the light-diffusing plate 230 to form a graphic to be displayed. On the one hand, the brightness of the graphic can be improved by increasing the brightness of the LED lamp bead 211, and on the other hand, other areas on the light-diffusing plate 230 are not light-transmitting, thereby improving the contrast of the graphic; by installing a translucent panel 240 on the light-diffusing plate 230, the boundary between the light-transmitting area 231 and other areas on the light-diffusing plate 230 can be blurred, and the via 221 and the LED lamp bead 211 exposed in the via 221 can also be blurred, so that the appearance consistency of the display module 200 is improved when the LED lamp bead 211 is off. Therefore, the display module 200 can improve the contrast of the displayed graphics and improve the aesthetics of the panel 240 at the same time.

[0038] The time clock provided in the present application includes the display module 200 provided in the present application, so the time clock has the beneficial effects provided by the display module 200, which will not be described in detail here. Figure 1 , Figure 2 Only one installation layout of the display module 200 in the time recorder is schematically shown. In this case, the display module 200 faces the front of the time recorder, which is convenient for the user to observe the readings when the time recorder is hung on the wall. In other embodiments, the display module 200 may have a different layout. For example, if the hanging height of the time recorder is not high and the user needs to look down to operate the time recorder, the display module 200 may be arranged on the top of the time recorder, so that the user can observe it when operating it.

[0039] Reference Figure 3 In some embodiments, a light shielding layer is printed on the front side of the light-dispersing plate 230 , and the area on the light-dispersing plate 230 where the light shielding layer is not printed forms a light-transmitting area 231 .

[0040] It is understandable that the light shielding layer can be formed by screen printing ink on the light homogenizing plate 230, and the specific shape of the pattern can be flexibly designed according to needs. For example, refer to Figure 3 In some embodiments, the graphic includes edges for forming numbers, triangular arrows for indication, and text symbols.

[0041] It should be pointed out that although the panel 240 can blur the boundary between the light-transmitting area 231 and the light-shielding layer, the color difference between the light-transmitting area 231 and the light-shielding layer can still be observed through the panel 240. At the same time, the color of the panel 240 itself will also be superimposed on the color of the light-shielding layer, resulting in color difference.

[0042] In order to further blur the color difference between different areas when the LED lamp beads 211 are turned off, in some embodiments, the colors of the panel 240, the light baffle 220 and the light shielding layer are the same.

[0043] For example, in some embodiments, the colors of the panel 240 , the light blocking plate 220 , and the light shielding layer are all black.

[0044] In this way, when the LED lamp bead 211 is turned off, due to the loss of the internal light source, the panel 240 is used to block a portion of the light entering the via 221 from the outside, so that the inside of the via 221 can be observed to be close to black, which is close to the color of the shading layer, thereby effectively reducing the color difference.

[0045] Furthermore, in some embodiments, a light absorbing layer may be further coated on the side wall of the via hole 221, or the light baffle 220 may be made of a light absorbing material, so that the inside of the via hole 221 is closer to black when the LED lamp bead 211 is turned off.

[0046] However, it should be noted that the base color of the substrate (i.e., PCB) of the light board 210 is generally green. When there is strong light from the outside, the light board 210 may be observed, which reduces the aesthetics. In order to expose the light board 210 to the via hole 221 as little as possible, in some embodiments, the via hole 221 forms a light inlet on the back of the light shielding plate 220, and the size of the light inlet matches the size of the LED lamp bead 211.

[0047] That is to say, referring to Figure 4 From the back to the front, the cross-sectional area of ​​the via 221 gradually increases, and the size of the light entrance is close to the size of a single LED lamp bead 211, thereby exposing the LED lamp bead 211 while reducing the exposure of the main body, and the size of the light exit is greater than or equal to the size of the light transmission area, and the projection of the light transmission area completely falls within the range of the light exit, so that the LED lamp bead 211 can fully illuminate the light transmission area and completely display the graphics to be displayed.

[0048] It is understandable that a graphic can be composed of multiple blocks. For example, a digital graphic needs to be composed of a combination of seven line segment blocks, each block corresponds to a via 221. In some embodiments, an LED lamp bead 211 is arranged in each via 221 to prevent the substrate between adjacent LED lamp beads 211 from being difficult to block.

[0049] In order to accurately align the light-transmitting area and the light outlet, in some embodiments, reference Figure 4 A recessed groove is provided on the front of the light blocking plate 220 , and the light emitting plate 230 is embedded in the recessed groove, thereby realizing the positioning and installation between the light emitting plate 230 and the light blocking plate 220 .

[0050] In addition to the display function, the display module 200 may also be provided with more functions when necessary.

[0051] For example, in some embodiments, a button hole 241 is provided on the panel 240. Figure 3 The display module 200 further includes a button 250 and a button plate 260 . The button plate 260 is communicatively connected to the light board 210 . The button 250 is mounted on the button plate 260 . The position of the button 250 is aligned with the position of the button hole 241 .

[0052] When applied to a time recorder, button 250 can be used to trigger the time recorder to execute a print command, or to switch the content displayed by display module 200 between different modes. Related designs can refer to various existing time recorders and will not be described in detail here.

[0053] In some embodiments, a speaker hole 242 is formed on the panel 240 , and the display module 200 further includes a buzzer 270 , and the position of the buzzer 270 is aligned with the position of the speaker hole 242 .

[0054] Optionally, refer to Figure 2 In some embodiments, the buzzer 270 and the light board 210 are separately mounted on the housing 100 , and the light board 210 avoids the buzzer 270 through a pre-opened avoidance hole, so that there is no obstruction between the buzzer 270 and the speaker hole 242 .

[0055] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0056] In some optional embodiments, the function / operation mentioned in the block diagram may not occur in the order mentioned in the operation diagram. For example, depending on the function / operation involved, the two boxes shown in succession can actually be executed substantially simultaneously or the boxes can sometimes be executed in reverse order. In addition, the embodiment presented and described in the flow chart of the application is provided by way of example, for the purpose of providing a more comprehensive understanding of technology. The disclosed method is not limited to the operation and logic flow presented herein. The optional embodiment is expected, wherein the order of various operations is changed and the sub-operation described as a part of a larger operation is performed independently.

[0057] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A display module, characterized in that: include: A light board, wherein LED lamp beads are installed on the front of the light board; A light baffle, the light baffle being mounted on the front side of the light board, the light baffle being provided with a through hole, the through hole forming a light outlet on the front side of the light baffle, the LED lamp bead being located in the through hole; A light-diffusing plate, the light-diffusing plate being mounted on the front side of the light-blocking plate, the light-diffusing plate comprising a light-transmitting area, the position of the light-transmitting area being aligned with the light outlet, and the light-transmitting area being used to form a pattern to be displayed; A panel is installed on the front side of the light-diffusing plate, the panel is made of a translucent material, and the panel covers the light-diffusing plate.

2. The display module according to claim 1, characterized in that: A light-shielding layer is printed on the front side of the light-diffusing plate, and the area on the light-diffusing plate where the light-shielding layer is not printed forms the light-transmitting area.

3. The display module according to claim 2, characterized in that: The color of the panel, the light blocking plate and the light shielding layer are the same.

4. The display module according to claim 3, characterized in that: The sidewall of the via hole is coated with a light absorbing layer, or the light blocking plate is made of a light absorbing material.

5. The display module according to claim 1, characterized in that: The via hole forms a light entrance on the back side of the light blocking plate, and the size of the light entrance matches the size of the LED lamp bead.

6. The display module according to claim 1 or 5, characterized in that: A sinking groove is provided on the front side of the light blocking plate, and the light scattering plate is embedded in the sinking groove.

7. The display module according to claim 1, characterized in that: The panel is provided with a button hole.

8. The display module according to claim 7, characterized in that: The display module further comprises a key and a key board, wherein the key board is communicatively connected with the light board, the key is mounted on the key board, and the position of the key is aligned with the position of the key hole.

9. The display module according to claim 1, characterized in that: The panel is provided with a speaker hole, and the display module further comprises a buzzer, the position of the buzzer is aligned with the position of the speaker hole.

10. A time recorder, characterized in that: The time recorder comprises the display module according to any one of claims 1 to 9.

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