JP2001134224A - Luminous display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make the scroll characters of a luminous display device of a large- sized screen of a wide angle easily visible even at a short distance and to promote the reduction of the cost for extension of LEDs and the electric power consumption. SOLUTION: The luminous display device which has the LEDs dispersedly arranged in the longitudinal and transverse directions in a matrix region of 8 rows and 33 columns and displays desired images by outputting output signals selectively to the LEDs is arranged with the LEDs at least one piece or above and below the number of the lines described above in each column of the matrix region. The image data corresponding to the matrix region are shifted by every one column toward the column of the other end corresponding to the column at one end of the matrix region from the column.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a light-emitting display device for displaying a character or an image by causing a light-emitting element such as an LED to emit light.

[0002]

2. Description of the Related Art For example, an LED light-emitting panel for displaying image data such as a news article or an advertisement is provided in a store or in a train, and an LED light-emitting panel which displays characters or images is known.

In many of these LED light emitting panels, a large number of LEDs (light emitting diodes) are mounted on the panel in a matrix in a vertical and horizontal direction, and a light emitting signal is output to a specific LED row to move an image or the like. It is displayed.

In recent years, a large number of bar-shaped light-emitting members are arranged in a bar shape by connecting LEDs in a vertical direction, and a light-emitting signal is scrolled and output to the LEDs of these bar-shaped light-emitting members so that the observer can observe the light. In some cases, characters appear to move in the horizontal direction due to the visual afterimage effect.

[0005]

However, the conventional LED light-emitting panel has a problem in that the number of LEDs mounted in the vertical and horizontal directions increases in order to enlarge the image to be displayed, so that the cost increases sharply.

On the other hand, when a large number of rod-shaped light emitting members are provided in parallel, when characters scrolling from a distance are viewed, the characters are easy to recognize, but approach a position where the observer's visual range is full. Then, since the rod-shaped light emitting members are too far apart, there is a problem that it is difficult to recognize characters.

The present invention has been made in view of such problems, and can prevent an increase in cost due to an increase in the number of light emitting cells even when a large light emitting display device is used. It is an object of the present invention to provide a light-emitting display device in which an image can be easily recognized even if the observer is located in a range where the observer can fully see the image.

[0008]

In order to solve the above-mentioned problems, a light-emitting display device according to claim 1 of the present invention comprises n rows and m rows.
Light emitting cells capable of emitting light in the form of dots are arranged in the matrix area of the column in a dispersed manner in the vertical and horizontal directions, and by selectively outputting an output signal to the light emitting cells, the light emitting cells emit light to display a desired image. In the light-emitting display device, the arrangement of the light-emitting cells is at least one or more in each column of the matrix region, and less than the number of rows, and image data corresponding to the matrix region, The matrix is shifted from one end row to the other end row opposite thereto for each row forming the matrix.

According to a second aspect of the present invention, there is provided a light emitting display device, wherein light emitting cells capable of emitting light in a dot shape are arranged in each element of a matrix region of n rows and m columns, and an output signal is selectively supplied to these light emitting cells. A light emitting display device that displays a desired image by causing the light emitting cells to emit light, wherein masking for preventing light emission of the light emitting cells is performed in at least one or more rows and columns of the matrix region. Yes, and is performed less than the number of each row and each column, masked so that the light emitting cells can emit light, the image data corresponding to the matrix region, from the column at one end of the matrix region to this The matrix is shifted for each row forming the matrix toward the opposite row of the other end.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a light emitting display according to an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 shows a light-emitting display device according to a first embodiment. The panel 2 of the light emitting display device 1 includes 33
A matrix area 3 of 8 columns (n = 8, m = 33) is set. An image such as a character or graphic displayed in the matrix area 3 scrolls from the right end to the left in FIG.

The matrix region 3 is divided into four, and eight LEDs (light emitting cells) are provided in a column located at the left end in each of the four divided regions. The division of this area is an example, and is not limited to this number.
Further, the number of matrices is also an example, and the number of rows and columns may be increased in order to improve the display resolution of an image. Eight LED columns are provided in the rightmost column of the matrix area 3 to make it easier to see the initial output of scroll characters. The LED array is divided into LED arrays [1] to [5] from right to left of the four regions.

The light emission of each of the LED strings [1] to [5] is controlled by the control circuit 4 shown in FIG. The control circuit 4 includes a CPU 5, a ROM 6, a RAM 7, an interface (I / O) circuit 8, and the like.
Each LED of the LED array [1] to the LED array [5] is connected to the interface circuit 8. R of control circuit 4
The OM 6 is provided with at least an image display program for displaying an image on the LED arrays [1] to [5] of the panel 2 of the light emitting display device 1 and a storage area for image data read by the image display program. Have been.

FIG. 3 conceptually shows a storage area of the image data. The image data includes L of each LED array.
8-bit image data corresponding to the number of EDs is stored in address order. The control circuit 4 starts an image data output program when a switch (not shown) is turned on, and repeats a loop for outputting image data.

The image display program reads the image data sequentially from the head address (individually 1000 addresses) of the storage area of the image data, and outputs the LED array [1], LED [2], LED [1] via the output port and the interface circuit. Output to column [3], LED [4], LED column [5].

That is, when the start address of the image data in the ROM 6 is (for example, address 1000), the data of (address 1000) is sent to the LED array [1] by starting the program. LED row [1] (address 1000)
After a lapse of a predetermined time [t seconds] since the data of
The data at the address (1001) is shifted and sent to the ED column [1]. In the case of 16 bits, since it is 2 bytes, it is (1002).

When the predetermined time [t seconds] has elapsed, the clock is subtracted from the waiting time setting counter, and when the waiting time setting counter becomes 0, the data at address 1001 is shifted and sent to the LED array [1].

The output of image data to the LED array [2] depends on the distance L between the LED array [1] and the LED array [2]. If this interval L is k times the width of one LED,
After [kt] seconds, the image data of address (1000) is output to the LED array [2], and after [kt + t] seconds, the image data of (address 1001) is output to the LED array [2]. Similarly, LED row [3] has [k · 2t] seconds, LED row [4] has [k · 3t] seconds, and LED row [5] has [k].
After 4t] seconds, the image data at (1000 address) is output. The image data at (1001) is [k · 2t + t] seconds after the LED string [3] and [k · 3] in the LED string [4].
After [t + t] seconds, it is output to the LED array [5] after [k · 4t + t] seconds.

That is, each of the LED arrays [1] to [5] has the LED lighting time t times [1] times,
A delay time of [2] times, [3] times, [4] times, and [5] times is set, and the image data after (address 1000) is also delayed by the lighting order from the first address and is assigned to each LED row. Is output. Each delay time uses a counter register for time setting and a subtraction instruction. Note that a timer circuit may be used.

The image data display program loops to the start address of the image data when the image data at the end address of the image data storage area is output to the LED array [1].
This may be looped when the address of the image data to be output to the LED array [1] matches the end address.

In this embodiment, the LED arrays [1] to LE
Since each of the D columns [5] is composed of an 8-bit LED, the constant k = 8. However, if the distance between adjacent LED columns is three times the width of one LED, the multiple k = 3.
It is good.

In this embodiment, by changing the time t, the speed of the scroll image can be changed, and the visibility of the scrolled image can be changed according to the number of the LED arrays.

Next, the light emitting state of the light emitting display device 1 according to this embodiment will be described with reference to FIGS. 1 (A) to 1 (D). When power is supplied to the light emitting display device 1, a current is supplied to the light emitting display device 1, and the LED arrays [1] to [5] are also enabled to emit light. LE from circuit 8
Image data is output to D columns [1] to [5].

FIG. 1A shows a state before data is output to the LED array [1]. When the image data program is started, as shown in FIG.
Image data is output to column [5]. After outputting the image data of address (1000) to the LED array [1] for t seconds,
As shown in FIG. 1C, (1001)
Address) is output. Thereafter, the image data is sequentially output, and after 25t seconds, the image data is output as shown in FIG. This image data is LED
When the data is output to columns [1] to [5], the scroll speed from right to left of the image data is determined by the time setting of t. By scrolling the image data in this manner, the scroll characters “AB” are displayed on the panel 2 of the light emitting display device 1.
"CDE" is displayed, and the observer can recognize the scroll character "ABCDE" by the visual afterimage effect. Further, since all the LEDs of the panel 2 are not turned on, the power consumption can be reduced, and the LED strings [1] to
By shortening the arrangement interval of [5], it is possible to make scrolling characters more visible.

In FIG. 1 and FIGS. 4 to 7 described below, the black small squares indicate the lit LEs.
D, and white small squares indicate non-lighted LEDs.

In the above embodiment, the LED rows are dispersed at the fixed positions of the panel 2 of the light emitting display device 1, but are arranged.
LED columns are provided in all the columns of the matrix composed of 8 rows and 33 columns, and the LED columns that emit light are denoted by LE in FIGS. 1 and 4 to 7.
Mask other LED rows to limit to D rows,
Output image data including the masked LED array,
An unmasked LED array may emit light. This masking may be performed by not connecting to the LED, or may be performed on a program.

FIGS. 4A to 4D show the LED on the panel.
The arrangement of is changed. In this panel 10, four LEDs are arranged in two columns on the left side of the four divided areas, and four LEDs are arranged in the right end of the panel 10.

These LEDs include an LED row 1 at the right end.
The output time is determined by the separation distance from 1 (a multiple of the width of one LED). For example, in the LED array 12 at the center, 15 LEDs are separated from the LED array 11, so that the data output to the LED array 11 is 15 LEDs.
It is output to the LED array 12 after t seconds, and is output to the LED array 13 at the left end after 32 t seconds.

The output of the image data to the LED columns is controlled by a program. For example, in a matrix of 8 rows and 33 columns, three columns including columns where no LEDs are arranged are included.
An input terminal for 8-bit data may be provided in all three columns, 33 output ports may be provided in the interface, and the output of the interface may be sequentially connected from the right end to the input terminal on the left after t seconds.

FIGS. 5A to 5D show the LED on the panel.
Are further changed. In this panel, in this panel, LEDs are arranged in all the columns on the matrix.
The LEDs are arranged in rows. FIG.
(A) to (D) and FIGS. 7 (A) to (D) show that after dividing the matrix into four regions (8 dots × 8 dots), the LEDs are randomly arranged in each region so as not to be unevenly distributed in up, down, left and right. It is arranged in. In the panels of FIGS. 6 and 7,
One L for each row and each column in the area of 8 dots x 8 dots
ED is arranged. The one in FIG. 6 is irregular,
7 (A) to 7 (D) show that every other LE from the lower left to the upper right.
D is arranged, and LEDs are arranged obliquely in the entire panel. Image data is output to the LEDs of the panels of FIGS. 5 to 7 from the right end to the left end of the matrix area. In the panels of FIGS. 5 to 7, 1 is assigned to each row and each column.
LEDs are arranged, but the present invention is not limited to this.
The EDs may be arranged in a checkered lattice.

According to the arrangement of the LEDs in FIG. 6 and FIG.
Since the EDs are randomly arranged so as not to be unevenly distributed in the vertical and horizontal directions in the 8 × 8 dot area, the lighting interval of the LEDs is short, and the visual afterimage effect of the observer is easily maintained. Is recognized, and the scrolling characters are more easily seen.

According to the light emitting display device described above, the LE
According to the arrangement of D, for example, when characters composed of 8 × 8 bits (for example, characters such as “A”, “B”, “C”, “D”, “E”, and “F”) are output as image data images, LED data [1] to
[5] is caused to emit light. The light emission of the LED strings [1] to [5] gives an afterimage effect to the observer's vision, so that the observer looks like a character such as “ABCDEF” moves from right to left, and the observer sees the light emitting display device. 1 "ABCDEF"
Can be recognized.

The light emitting cell is not limited to the LED, but is applicable to a light bulb, a liquid crystal, and a liquid crystal panel.

[0034]

According to the light emitting display device of the first aspect of the present invention, the light emitting cells are arranged vertically and horizontally in the display matrix area and the interval in the scroll direction is small, so that characters or images can be scrolled. When the light is emitted, even if the observer is located at such a short distance that the matrix area is completely covered by the naked eye, characters or images can be recognized by the afterimage effect of the naked eye. Therefore, even if the screen display is enlarged, the rate of increase in the light emitting cells and the power consumption can be reduced, and the cost associated with the enlargement of the screen can be reduced.

According to the light emitting display device of the second aspect of the present invention, the light emitting cells are provided in the entire matrix region, and the matrix of the light emitting cells is masked so that the light emitting cells capable of emitting light are dispersed. Therefore, if a character or an image is scrolled to emit light, even if the observer is located at a short distance such that the matrix area enters the full visual range of the naked eye, the character or the image is recognized by the afterimage effect of the naked eye. be able to. Therefore, even if the screen display is enlarged, the rate of increase in power consumption can be prevented, and the increase in cost due to the enlargement of the screen can be reduced. Moreover, since the light emitting cells to be masked can be freely selected according to the image to be displayed, when displaying fine characters, the number of light emitting cells that can emit light is increased, and when displaying large characters, the number of light emitting cells is decreased. It can be selected according to the resolution of the image.

[Brief description of the drawings]

FIG. 1A is a front view of a panel of a light-emitting display device according to a first embodiment of the present invention. FIG. 1B is a front view of a state in which image data of a head address is output. FIG. (D) Front view of panel in a state where image data is output 25 t seconds after the start address is input.

FIG. 2 is a block diagram of a control circuit of the light emitting display device of FIGS. 1 to 7;

FIG. 3 is a conceptual diagram of image data stored in a storage area of FIG. 2;

FIG. 4A is a front view of a panel of a light emitting display device according to a second embodiment of the present invention; FIG. 4B is a front view of a state in which image data of a head address is output; FIG. (D) Front view of panel in a state in which image data is output 28 t seconds after the start address is input.

FIG. 5A is a front view of a panel of a light-emitting display device according to a third embodiment of the present invention. FIG. 5B is a front view of a state in which image data of a head address is output. (D) Front view of panel in a state in which image data is output 31 t seconds after the start address is input.

FIG. 6A is a front view of a panel of a light emitting display device according to a fourth embodiment of the present invention. FIG. 6B is a front view of a state in which image data of a head address is output. FIG. (D) Front view of panel in a state where image data is output after 26t seconds elapse after input of the start address.

FIG. 7A is a front view of a panel of a light-emitting display device according to a fifth embodiment of the present invention. FIG. 7B is a front view of a state where image data of a head address is output. (D) Panel front view in a state in which image data is output after 28 t seconds have elapsed after the start address has been input.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 light emitting display device 2 panel 3 matrix area 4 control circuit 5 CPU 6 ROM 7 RAM 8 interface circuit

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 5C080 AA07 BB05 CC06 DD01 DD27 EE04 EE17 EE22 FF09 GG02 JJ01 JJ02 5C094 AA22 AA44 BA25 CA19 ED20 GA10 HA05 HA10 5C096 AA27 BA04 BC20 CA06 CB01 CC11

Claims (2)

[Claims] 1. A light emitting cell capable of emitting light in a dot shape is arranged in a matrix area of n rows and m columns in a vertical and horizontal direction, and an output signal is selectively outputted to the light emitting cell, whereby the light emitting cell is formed. A light-emitting display device that emits light to display a desired image, wherein the arrangement of the light-emitting cells is at least one or more and less than the number of rows in each column of the matrix region, and corresponds to the matrix region. A light-emitting display device, wherein image data is shifted from one end of the matrix region to the other end of the matrix region for each column forming the matrix. 2. A light emitting cell capable of emitting light in a dot form is arranged in each element of a matrix region of n rows and m columns, and an output signal is selectively output to these light emitting cells, whereby the light emitting cell is formed. A light-emitting display device that displays a desired image by emitting light, wherein at least one masking for preventing light emission of the light-emitting cells is provided in each row and each column of the matrix region,
In addition, the number of rows and columns is less than the number of rows, and masking is performed so that the light emitting cells can emit light. Image data corresponding to the matrix area is shifted from one end column of the matrix area to the image data. Towards the other row,
The light-emitting display device is shifted for each column forming the matrix.