KR20060090317A - Dual LED Module Module - Google Patents

Abstract

The present invention relates to a dual structured light emitting diode pixel module device including a first pixel module and a second pixel module overlapping each other in a light emitting diode pixel module used as an electronic display.

As an example of a matrix state of a dual pixel module, an existing module is composed of only nxn predetermined pixels, whereas the present invention is configured such that the number of pixels of the module is (n + α) x (n + β). Lost modules are provided.

According to the present invention, by selectively adding α and β, various visual effects may be realized by simultaneously displaying a separate screen by α × β during the existing display of n × n.

Light emitting diodes, dual, pixel, module, color,

Description

Dual LED Pixel Module

1 is a view showing an example of a conventional LED display circuit.

2 is a view showing a state of a conventional LED pixel module.

3 is a view showing an arrangement state of only the second pixel module of the present invention;

4 is a diagram illustrating a dually configured pixel module state of the present invention;

5 is a schematic configuration diagram of an LED display board for driving a dual pixel module according to the present invention;

<Explanation of symbols for the main parts of the drawings>

1: light emitting cell 2: central controller

51: dual pixel module 55: control circuit

511: basic pixel module 512: added color pixel module

521: first drive circuit 522: second drive circuit

SRi: Shift register a-h: column of color light emitting cells

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a light emitting diode (LED) display board device, and more particularly, to include a first pixel module and a second pixel module overlapping each other in a light emitting diode pixel module used as a light emitting plate. Relates to a device.

In general, a light emitting diode display system is largely composed of a light emitting diode pixel module, a display control circuit portion, a module driving circuit portion, and a power supply portion. In addition, light emitting diodes, which are semiconductor devices used in pixel modules, are present in various colors such as red, green, blue, and yellow.

The electronic sign control device controls the overall operation of the electronic sign, and usually includes a central processing unit (CPU) for storing data and programs related to the contents to be output to the electronic sign.

The driving circuit unit for driving the light emitting diode pixel module converts the image signal received from the electronic display controller to suit the characteristics of the LED pixel module and distributes the signal. Usually includes a decoder and an amplifier.

 The general standard of the LED pixel module is 16 x 16 pixels, and if necessary, a plurality of panel modules are connected to form an electronic board.

The scroll display method and system disclosed in Korean Patent Registration No. 10-0236453 (first date, October 25, 1994, Japan) is shown in FIG. 1.

The drive circuitry can integrate 16-bit shift registers and latch drivers. For each drive circuit, an 80-bit (16 x 5 bit) shift register SRi is attached. The input terminal of the shift register SRi is connected to the data output of the image memory of the central control unit 2.

The entire data transfer system operates in synchronization with the clock from the timing clock generator circuit in the central controller 2. The central control unit 2 reads in series the thermal data of each light emitting cell from the image memory and inputs them to the shift register SRi connected in series.

In general, bitmap type character string data consisting of 16 x 16 dots is sequentially generated. When scrolling in the horizontal direction, the display panel or the number of dots in the horizontal direction is increased to increase the number of characters to be displayed at the same time. Was necessary.

A feature of the patent that improves this advantage is that the light emitting cell array segments are arranged in a substantially parallel relationship at regular intervals different from each other at different positions of the strip-shaped physical part. From driving the first light emitting cell array segment with m dot column data corresponding to the pixel to be displayed by one light emitting cell array segment, it is required to drive the second light emitting cell array segment with the same m dot column data. The time is to be controlled to be proportional to the interval between the first and second light emitting cell array segments.

As another prior application technology, Korean Utility Model Application No. 20-2004-0040063 relates to a 'dual module LED signboard', which is in addition to the driving circuit module of the LED pixel on the back of the pixel panel which is connected more than two horizontally. The present invention relates to a configuration in which a module and a power supply module can be mounted, thereby facilitating standardization of an electric sign. Even in this case, a display panel in the form of a dot matrix in which a plurality of light emitting cells are arranged in two dimensions at regular intervals is the basis.

As a conventional technique for improving the display function as an electric sign, there is a 'rotating electric sign' of Korean Utility Model Registration No. 20-0192842 (filed in July 1998). It installs the LED on the display arm and controls the LEDs sequentially by the control program stored on the motherboard, mounts the motor in the center of the display arm, and rotates the motor shaft coupled to the fixed shaft of the pedestal, The main board is connected to the power supply through the hollow portion of the fixed shaft, the motor is connected to the power supply via the rotary contact terminal, it characterized in that it is possible to display characters and figures with visual afterimage effect.

Another technique is 'light emitting device display device' of Korean Patent Application No. 10-1996-0046579 (not a request for examination). A common component includes a central processing unit, a light emitting device display unit, and a driving circuit unit, and adjusts the light emission display time of the light emitting device so that the brightness of the module itself is adjusted by its average brightness level for a predetermined time period. It characterized in that it comprises a module luminance adjusting unit for controlling the time that the display data is output to the driving circuit portion, and an external illuminance monitoring unit to adjust the overall display luminance level of the light emitting element corresponding to the change in the external illuminance.

The development technology of the light emitting diode itself has also been proposed, and there is a 'illuminator assembly incorporating a light emitting diode' of Korean Patent Application No. 10-1998-7010212 (International Publication No. WO 1997/48134). This represents a first perceived color (eg, blue-green) when all LEDs are energized, and a second perceived color (eg, where the illumination projected from at least one of the LEDs is distinct from the first perceived color). Amber), overlapping and mixing with the light projected from at least one of the remaining LEDs, the superimposed and mixed light to form a conditional white and having a color of sufficient intensity and quality to be an effective illuminator It is characterized by the method.

There is also a 'composite light emitting diode structure' of Korean Patent Application No. 10-2001-0057150. This is injection molding and extrusion molding. The resistance of the printed circuit board and the light emitting diode are integrated on both ends of the transparent cylindrical bar to form an insulator, which can be used as a flexible bar lamp or a power terminal cord type bar lamp with a terminal cap. A double color composite LED structure is disclosed.

Meanwhile, there is a prior application technology entitled 'Color light emitting module and its manufacturing method' (Korean Patent Application No. 10-2001-0048894).

The prior art is gradually providing a wider variety of light emitting diodes, and more versatile electronic panel panel module.

According to the present invention, a first pixel module and a second pixel module added to one light emitting diode pixel module, which is used as an electric sign, are superimposed in one module to drive the first and second modules, respectively. It is an object of the present invention to provide a light emitting diode pixel module device composed of a dual pixel module.

A feature of the present invention for achieving the above object is that the first light emitting diode pixel set 511, the gap between the light emitting diode pixels is larger than the diameter of the light emitting diode itself, and the light emitting diode of the first pixel set A first light emitting diode module comprising a first light emitting diode driving circuit portion 521 for driving;

A second light emitting diode comprising a second light emitting diode pixel set 512 disposed between the first set of pixels and a second light emitting diode driving circuit portion 522 for driving the light emitting diode of the second pixel set A diode module;

And a control unit 55 for controlling the first driving circuit unit 521 and the second driving circuit unit 522 to display each pixel set.

Another feature of the present invention is that a part of the second pixel set 512 is disposed outside the outer edge of the first pixel set 511.

Hereinafter, with reference to the accompanying drawings, embodiments of the configuration according to the present invention will be described in detail.

FIG. 2 is a view showing a (16 × 16) state of a conventional LED pixel module (first pixel module), and FIG. 3 is a view showing an example of a matrix state of only a second pixel module added according to the present invention. to be.

2, it can be seen that the spacing of the pixels representing the light emitting diodes is larger than the diameter of the light emitting diodes themselves.

In the present invention, it is noted that, in the case of the light emitting diode display plate, the pixel spacing is relatively spaced apart from other image media. In a typical LED device, one diameter is usually 3-5 mm, and the distance between each LED pixel is more than that.

The second pixel set, shown as an example in FIG. 3, shows that the array of LEDs consists of 10 × 8 modules.

4 is a diagram in which the first pixel set and the second pixel set overlap each other, and indicate that pixels of the second pixel set are arranged at regular intervals between pixels of the first pixel set. The first pixel set is a diagram showing an LED pixel module having a dual configuration of 26 x 24 pixels with 10 x 8 pixels added as a second pixel set between 16 x 16 pixels. In the existing module, as shown in FIG. 2, the screen is composed of only n x n predetermined pixels, but according to the present invention, the number of pixels of the module is generally increased to (n + α) × (n + β).

Referring to FIG. 4 in detail, column a (first column) of the second pixel set of the light emitting diode is disposed between the first column and the second column of the first pixel set, and b column of the second pixel set is the first pixel set. Lies between rows 3 and 4. Columns c to h are also placed between odd and even columns of the first pixel set in the same manner. Similarly, so is the row of pixel sets.

In another embodiment, the second pixel column may be placed between even and odd columns of the first pixel set, and the second pixel column may be arranged at a smaller density or irregularly (if scroll technology is realized). The most uniform and small pixel density is the 8 x 8 (generally α x β) matrix portion of the one shown in Fig. 4 except for the first row and the tenth row outside of " ga &quot;.

If the second pixel density or number is reduced, the resolution may be reduced, but the material cost may be reduced, and the screen overlap effect may be obtained. However, the present invention is not limited to the number of pixels or the relative pixel density of the second pixel module, and various modifications are possible.

According to a particular embodiment of the present invention, the first row (first row in FIG. 4) and the last row (10th row in FIG. 4) of the second pixel set are positioned outside the outside of the first pixel set. By controlling the blinking of the light emitting diode pixels disposed in this portion, the screen of the entire electronic display board may be made larger, and the effect of displaying the edges of the display in the first pixel set may be realized.

5 schematically illustrates a circuit configuration of an LED display board for driving a dual pixel module according to the present invention. In FIG. 5, a dual pixel module 51, a control circuit unit 55, a first driving circuit 521, and a second driving circuit 522 are illustrated.

The dual pixel module 51 includes, as an example, the first basic (conventional) pixel module 511 and the second added pixel module 512 as shown in FIG. 4. The second pixel module may be configured of a color or color (three primary color) LED different from the first pixel module.

A pixel module generally refers to a set of pixels. In some cases, a driving circuit for driving the pixel set is integrally manufactured, and thus, a pixel module is also referred to as a pixel module.

Preferably, the first driving circuit 521 for driving the first pixel module 511 and the second driving circuit 522 for driving the second pixel module 512 are independently configured. As a result, two pixel modules 511 and 512 and two driving circuits 521 and 522 are allocated to one LED pixel module 51.

Although there may be several physical memories in the control circuit unit 55 that controls the entire LED display board 51, the two driving circuits and the two pixel modules may be driven by a single physical memory 555 having a large capacity. Those skilled in the art will appreciate. It is the same as driving a plurality of pixel panel modules with one memory. However, in order for the first pixel module 511 and the second pixel module 512 to blink independently of each other, it is preferable that the generation circuit of the synchronous clock signal includes two 551 and 552.

The control circuit unit 55 sends image data and a clock signal to each of the driving circuits 521 and 522 for each pixel module forming the pixel module 51 having the dual configuration. It is basically the same as having only a module (controlling and flashing each pixel in the module). However, the program related to the control process of the control circuit unit 55 mounted in the memory 555 will be changed. Those skilled in the art will understand that the specific program depends on the order of the sign.

Depending on the driving program of the LED pixel module, only the first pixel set may be flickering to make an image only in the first color, or conversely, only the second pixel set may be flickering to make the image only in the second color (color). . In addition, it is also possible to implement an image in which the first color and the second color overlap.

Compared to other video devices (computer monitors, etc.) having the same pixels (modules) and focusing on implementing screen overlaps in software in the image-data memory, the present invention provides an overlap (screen overlap) function in hardware ( Dual pixel module) has its features.

As described above, the dual light-emitting diode pixel module device of the present invention implements a screen overlap function in a hardware manner. In the conventional text-oriented single LED display board, the screen overlapping function is impossible, but according to the present invention, the first color and the second color may be implemented simultaneously or separately in a limited display board space.

In other words, when the dual pixel module device according to the present invention is configured in that the LED screen is composed of a small number of pixels and a wide pixel interval, the visual effect is relatively smaller than that of the software overlap of other video devices. LED can be implemented.

As a visual effect, while data is output from the existing first pixel module, a specific shape (for example, an arrow, etc.) may be output in a different color from the first pixel in the second separate module, thereby providing visual attention. The degree (attractability) can be improved. In addition, by blinking only the first row (column) and the last row (column) in the second module, it is possible to implement a border neon sign effect.

Claims (3)

A first light emitting diode pixel set 511 having a gap between the light emitting diode pixels larger than a diameter of the light emitting diode itself, and a first light emitting diode driving circuit unit 521 for driving the light emitting diodes of the first pixel set. A first light emitting diode module; A second light emitting diode comprising a second light emitting diode pixel set 512 disposed between the first set of pixels and a second light emitting diode driving circuit portion 522 for driving the light emitting diode of the second pixel set A diode module; And a controller unit 55 for controlling the first driving circuit unit 521 and the second driving circuit unit 522 to display each pixel set. Light emitting diode pixel module device. The device of claim 1, wherein a portion of the second pixel set is disposed outside an outer edge of the first pixel set. The dual pixel LED module of claim 1, wherein the second pixel set includes a light emitting diode having three primary colors.

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