LED display panel, system and equipment
A display panel and display system technology, applied to static indicators, instruments, etc., can solve the problems of low port utilization and large number of pins, and achieve the effect of reducing the number of pins and improving port utilization
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Embodiment 1
[0059] Assuming a LED display panel with 6 ports, according to the existing control method, the row and column lines are separated, and there are several combinations as follows:
[0060] row (or column)
column (or row)
Number of LED lights
1
5
5
2
4
8
3
3
9
4
2
8
5
1
5
[0061] It can be seen that the existing LED display panel can drive up to 9 LED lamp points.
[0062] Share the row and column lines, such as Figure 7 As shown, there are 6 rows and 6 columns in total, but there is an LED light point position in each row or column, because the row line and column line signal are consistent, so it is always off. By short-circuiting the positions of the light points, the total number of LED light points of the LED display panel obtained is 6*6-6=30.
[0063] It can be seen that when the number of ports is fixed at 6, the existing LED panel can only...
Embodiment 2
[0065] Assuming that an LED dot matrix with 10 rows and 6 columns (60 lamp points) is to be realized, according to the existing control method, the LED display panel needs 10+6=16 ports.
[0066] In the embodiment of the present invention, if the port utilization rate is maximized, only 9 ports can be used, because 9 ports can drive 9*8=72 independent light points, which is greater than 60.
[0067] In order to facilitate the corresponding relationship between rows and columns, the method of multiplexing row and column lines is adopted. When the number of rows and columns is not equal, the number of LED display panel ports can be set to (M, N) MAX . In this embodiment, the number of row lines (10) is greater than the number of column lines (6), and the number of ports of the LED display panel is set to 10.
[0068] From the perspective of circuit connection, the LED light point array has 10 rows and 7 columns. But in the 7 rows, there are no LED lights at the points where th...
Embodiment 3
[0070] Suppose you want to realize an LED display panel containing four 8-segment codes (equivalent to an LED display panel with 4 rows and 8 columns, or an LED display panel with 8 rows and 4 columns), if you do not require each digital tube in each 8-segment digital tube (or LEDs) can be operated at the same time, according to the above-mentioned embodiment 2, the above-mentioned LED display panel can be realized with 8 ports. However, according to the above description, in a complete display cycle, it is divided into 8 times and 4 LED lights are lit each time, or it is divided into 5 times, of which 7 lights are turned on in 4 times, and 4 lights are turned on in the other time. .
[0071] In particular, if an independent common-anode or common-cathode 8-segment digital tube is used as a unit, and each digital tube (or LED) in each 8-segment digital tube can be operated simultaneously, that is, it needs to be displayed at any time within a complete display period. For a mo...
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