HK1063524A - Method for driving full-color led display board - Google Patents

Description

High resolution driving method for LED full color display panel

Technical Field

The present invention relates to a driving method for a Light Emitting Diode (LED) full color display panel, and more particularly, to a driving method for improving the resolution of a LED full color display panel by using an interlaced scanning method.

Background

At present, the LED full-color display panel is widely applied to advertising panels, outdoor activities and real-time display of match scenes, and various images are played on a large-scale display screen under the control of a computer, so that the public can be identified and supported on site.

The LED full-color display panel is controlled by a computer, and characters, figures and images can be synthesized into pictures through professional animation and drawing software, so that the effect of three-dimensional change and continuous animation is generated. In addition, the LED full-color display panel can combine with the multimedia video and audio processing function to provide AV and S terminals to connect with the video camera, video recorder, and TV set, and then display various pictures on the computer screen synchronously via the high-speed transmission interface. Because the LED full-color display panel has the characteristics of bright color and rich picture change, the LED full-color display panel can deeply attract surrounding people and achieve the maximum advertising effect.

Generally, the conventional led full-color display panel system 10 is divided into three parts, as shown in fig. 1, and is composed of a main control computer 11, a signal receiving interface 12 and a driving unit 13. The master computer 11 uses animation procedure to make the data of characters, graphics, images, etc. into animation files, and then arranges and assembles them according to the time sequence, and transmits them to the signal receiving interface 12 directly or after network connection. The signal receiving interface 12 is connected to the main control computer 11 for storing and sorting the computer pictures sent from the main control computer 11 in a mapping manner. The driving unit 13 includes a power supply, and a processor is built in to drive the LED arrays with different colors and different combinations according to the set display mode.

Fig. 2 represents an image 20 to be displayed, which is a display frame in a dynamic display. The image 20 to be displayed is composed of a plurality of pixels (pixels), wherein each pixel is represented by a point coordinate on the horizontal axis and a row coordinate on the vertical axis, for example, the image 20 is composed of 640 point coordinates and 480 row coordinates, but may be composed of a higher resolution. In addition, each pixel of the image 20 is a color display, which means that each pixel is composed of three primary colors, red, green and blue.

Fig. 3 shows a conventional LED full-color display panel 30, which is composed of a plurality of LED pixels 31, each LED pixel 31 corresponding to a pixel of the image 20 to be displayed. Since the pixels of the image 20 to be displayed are represented by colors, each LED pixel 31 has four LED dots (dots) 32, which are two red LED dots, one green LED dot and one blue LED dot, and the pixels of the image 20 to be displayed are formed by combining the chromaticity and luminance of the four LED dots 32.

The conventional LED full-color display panel 30 only has one LED pixel 31 corresponding to one pixel of the image 20 to be displayed, and thus the resolution is limited, which does not meet the actual requirement of modern people for high-quality screens.

Disclosure of Invention

The main objective of the present invention is to provide a driving method for a full-color led display panel, which can greatly improve the resolution of the full-color led display panel by using an interlaced scanning method without changing the number of leds.

In order to achieve the above object, the present invention provides a driving method for resolution multiplication for a driving unit of a full-color led display panel. The present invention features that LED pixels with three primary colors are combined into one LED array in specific mode and one staggered scanning circuit is used to control the LED array so as to insert one new pixel between adjacent pixels for display and raise the resolution of LED full-color display board.

The method for driving a full-color LED display panel with high resolution according to the preferred embodiment of the present invention comprises steps (a) to (c). In step (a), a full color led display panel is provided, which has a first led array formed by a plurality of led pixels arranged in a diamond shape. In step (b), the odd dot signals of the odd rows and the even dot signals of the even rows of the image to be displayed are output to the first light emitting diode array. In step (c), the even dot signal of the odd row and the odd dot signal of the even row of the image to be displayed are output to a second light emitting diode array, and the light emitting diode pixel of the second light emitting diode array is formed by combining the right light emitting diode point of the left light emitting diode pixel, the left light emitting diode point of the right light emitting diode pixel, the lower light emitting diode point of the upper light emitting diode pixel and the upper light emitting diode point of the lower light emitting diode pixel in the adjacent four light emitting diode pixels of the first light emitting diode array.

Drawings

The invention will be described in accordance with the following figures, in which:

FIG. 1 is a system diagram of a conventional LED full-color display panel;

FIG. 2 is an image to be displayed;

FIG. 3 is a conventional LED full color display panel;

FIG. 4 is a block diagram of a driving unit of the LED full-color display panel system according to the present invention;

FIG. 5 is a diagram of an arrangement of a full-color LED display panel according to a preferred embodiment of the present invention; and

fig. 6(a) to 6(b) are cross scanning forming diagrams of the preferred embodiment of the present invention.

DESCRIPTION OF SYMBOLS IN THE DRAWINGS

10 known led full color display panel system

11 Master control computer 12 signal receiving interface

13 drive unit

20 image to be displayed

30 known LED full-color display panel

31 known LED pixel 32 known LED dot

41 interlaced scanning circuit 42 LED driving circuit

43 LED array

Description of the preferred embodiments

Fig. 4 is a block diagram of a driving unit according to the present invention, which includes an interlaced scanning circuit 41, an LED driving circuit 42, and an LED array 43. The interlaced scanning circuit 41 sequentially displays the display pattern (e.g., the pattern 20 to be displayed in fig. 2) at intervals of one dot pitch, thereby increasing the resolution. The LED driving circuit 42 is used for driving the LED array 43 to emit light, and has the characteristics of low voltage, low power consumption, long lifetime and fast response. The LED array 43 has a particular arrangement, such as a diamond arrangement as described in the preferred embodiment of the present invention. The LED driving unit 13 of the present invention utilizes the interlaced scanning circuit 41 to output the image signal to be displayed to the LED driving circuit 42, and the LED driving circuit 42 lights the LED array 43 to display the image frame.

Fig. 5 is an arrangement diagram of a full-color led display panel according to a preferred embodiment of the invention. The arrangement presents a diamond matrix, red, green and blue LEDs are staggered in an equidistant manner to form an LED array, and two red LEDs, one green LED and one blue LED are arranged in a diamond to form a basic LED pixel.

The formation of a display frame according to the preferred embodiment of the present invention is formed by two times of interlaced scanning, as shown in fig. 6(a) and 6 (b). Fig. 6(a) shows a first scan, in which odd dot signals of odd rows and even dot signals of even rows of an image to be displayed are output to the LED driving circuit 42, and the LED array 43 is turned on. At this point, the formation of pixels within the LED array 43 appears in a normal manner. Fig. 6(b) shows the second scanning, which outputs the even dot signal of the odd row and the odd dot signal of the even row of the image to be displayed to the LED driving circuit 42, and lights the LED array 43. At this time, the pixels in the LED array 43 are formed by combining the four LED dots that are most adjacent to each other (i.e., the right LED dot of the left LED pixel, the left LED dot of the right LED pixel, the lower LED dot of the upper LED pixel, and the upper LED dot of the lower LED pixel) among the four LED pixels that are adjacent to each other at the time of the first scanning into a new LED pixel. The preferred embodiment of the present invention is cycled through fig. 6(a) and 6(b), i.e., a resolution-doubled led full-color display panel is formed.

While the foregoing has been with reference to the disclosure of the present invention, it will be appreciated by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. Accordingly, the scope of the present invention should not be limited to the embodiments disclosed, but should include various alternatives and modifications without departing from the invention, which are encompassed by the following claims.

Claims (3)

1. A high resolution driving method for LED full color display panel comprises the following steps:

providing a full-color LED display panel, which is provided with a first LED array formed by a plurality of LED pixels arranged in a diamond shape;

outputting odd dot signals of odd rows and even dot signals of even rows of the image to be displayed to the first light emitting diode array; and

and outputting an even point signal of an odd row of the image to be displayed and an odd point signal of an even row to a second light-emitting diode array, wherein the light-emitting diode pixel of the second light-emitting diode array is formed by combining a right light-emitting diode point of a left light-emitting diode pixel, a left light-emitting diode point of a right light-emitting diode pixel, a lower light-emitting diode point of an upper light-emitting diode pixel and an upper light-emitting diode point of a lower light-emitting diode pixel in four adjacent light-emitting diode pixels of the first light-emitting diode array.

2. The high resolution driving method according to claim 1, wherein the signal to display the image is output to a light emitting diode driving circuit through an interlaced scanning circuit, and then drives the light emitting diode array to emit light.

3. The high resolution driving method according to claim 1, wherein the led pixels of the led array comprise two red led dots, one green led dot and one blue led dot.