1. A unit LED display screen comprising at least one LED display module, a supporting substrate, and a control panel, wherein the supporting substrate is arranged between the LED display module and the control panel in a sandwich manner for supporting a LED display device, and the supporting substrate is made of carbon fibre material.
2. The LED display screen according to claim 1, wherein the LED display module comprises a cover, a lamp plate and a backing plate which are sequentially arranged, LED light-emitting units and circuits are arranged on the lamp plate, the LED light-emitting units are arranged in a dot-matrix; and the LED display module is fixed on a side of the supporting substrate.
3. The LED display screen according to claim 1, wherein the LED display device further comprises a shield and an X-shaped box, a control panel and a power supply are arranged inside the X-shaped box, and the shield is arranged over the X-shaped box and fixedly connected to the supporting substrate.
4. The LED display screen according to claim 3, wherein through-holes are arranged in both of the supporting substrate and a backing plate, the X-shaped box with the control panel placed therein is arranged on another side of the supporting substrate opposite to the LED display module, and an interface on the control panel is electrically connected to a lamp plate of the LED display module via the through-holes.
5. The LED display screen according to claim 4, wherein reinforcing bosses are arranged around the supporting substrate, and protruded on a side of the supporting substrate towards the shield for reinforcing the strength of the substrate.
6. The LED display screen according to claim 1, wherein a thickness of the supporting substrate is between 0.8 mm and 2 mm.
7. The LED display screen according to claim 5, wherein a thickness of the reinforcing boss is between 2 mm and 8 mm.
8. The LED display screen according to claim 7, wherein a cross section of the reinforcing boss is trapezoid, rectangular or oval.
9. A LED display device being assembled by at least one unit LED display screen according to claim 1.
10. A method for manufacturing the supporting substrate according to claim 1, comprising the following steps:
S1: preparing a prepreg, comprising:
preparing a carbon fibre precursor material, and knitting it into a carbon fibre fabric, then adding resin into the carbon fibre fabric to form a prepreg;
S2, preparing a supporting substrate sheet, comprising:
cutting and punching the prepreg, so as to process it into a supporting substrate sheet with a suitable size;
S3: performing, comprising:
layer-designing the prepared supporting substrate sheet in a mold;
S4: molding, comprising:
hot-pressing the layer-designed supporting substrate sheet in the mold.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A liquid crystal display (LCD) system comprising:
an LCD device comprising:
a plurality of gate lines;
a plurality of data lines intersecting the plurality of gate lines;
a plurality of first switches each having a first end coupled to a corresponding gate line and a second end coupled to a corresponding data line;
a plurality of storage units each coupled to a third end of a corresponding first switch for receiving data from the corresponding data line;
a first power line formed in parallel with the plurality of gate lines;
a plurality of first coupling capacitors each having a first end coupled to the first power line and a second end coupled to the corresponding data line;
a source driving circuit coupled to the plurality of data lines for providing data signals; and
a plurality of demultiplexers coupled between the source driving circuit and the plurality of corresponding data lines for:
sequentially outputting the data signals to the plurality of data lines after a corresponding first switch coupled to the corresponding gate line and the corresponding data line is turned on;
keeping the plurality of data lines at a floating level after outputting the data signals;
generating a coupling voltage by changing a voltage level of the first power line from a first voltage level to a second voltage level; and
sequentially transmitting the coupling voltage to the data lines via the plurality of first coupling capacitors.
2. The LCD system of claim 1 further comprising:
a second power line formed in parallel with the plurality of gate lines; and
a plurality of second coupling capacitors each having a first end coupled to the second power line and a second end coupled to the corresponding data line.
3. The LCD system of claim 1 further comprising a control circuit coupled to the first and second power lines for controlling voltage levels of the first and second power lines.
4. The LCD system of claim 1 further comprising:
a gate driving circuit coupled to the plurality of gate lines for transmitting control signals to the plurality of first switches via the corresponding gate lines.
5. The LCD system of claim 1 wherein each demultiplexer includes a plurality of second switches coupled to the source driving circuit and the data lines for controlling signal transmission paths through which the data signals are transmitted from the source driving circuit to the data lines.
6. The LCD system of claim 5 wherein the second switches include thin film transistors (TFTs).
7. The LCD system of claim 1 wherein the first switches include TFTs.
8. The LCD system of claim 1 further comprising an electronic device including:
the LCD device; and
a controller coupled to the LCD device for providing an input signal based on which the LCD device displays images.
9. A method for driving an LCD system comprising:
turning on a first switch in a pixel unit coupled to a gate line for receiving a data signal from a corresponding data line;
sequentially outputting data signals to a plurality of data lines via a demultiplexer;
turning off the demultiplexer for keeping the plurality of data lines at a floating level;
generating a coupling voltage by changing a voltage level of a power line from a first voltage level to a second voltage level, and transmitting the coupling voltage to a first data line of the demultiplexer via a coupling capacitor coupled between the power line and the first data line; and
turning off the first switch in the pixel unit coupled to the gate line after generating the coupling voltage.
10. The method of claim 9 wherein sequentially outputting the data signals to the plurality of data lines via the demultiplexer is a source driving circuit sequentially outputting the data signals to the plurality of data lines via the demultiplexer.
11. The method of claim 9 further comprising:
generating a coupling voltage by changing the voltage level of the power line from the second voltage level to the first voltage level, and transmitting the coupling voltage to a second data line of the demultiplexer via a coupling capacitor coupled between the power line and the second data line.
12. The method of claim 9 wherein changing the voltage level of the power line from the first voltage level to the second voltage level is changing the voltage level of the power line from a high voltage level to a low voltage level.
13. The method of claim 9 wherein changing the voltage level of the power line from the first voltage level to the second voltage level is changing the voltage level of the power line from a low voltage level to a high voltage level.
14. A method for driving an LCD system comprising:
turning on a switch in a pixel unit coupled to a gate line for receiving a data signal from a corresponding data line;
outputting data signals to a plurality of data lines using a source driving circuit;
terminating outputting the data signals to the plurality of data lines for keeping the plurality of data lines at a floating level;
generating a coupling voltage by changing a voltage level of a power line from a first voltage level to a second voltage level, and transmitting the coupling voltage to a first data line via a coupling capacitor coupled between the power line and the first data line after keeping the plurality of data lines at the floating level; and
turning off the switch in the pixel unit coupled to the gate line after generating the coupling voltage.
15. The method of claim 14 further comprising:
generating a coupling voltage by changing the voltage level of the power line from the second voltage level to the first voltage level, and transmitting the coupling voltage to a second data line via a coupling capacitor coupled between the power line and the second data line.
16. The method of claim 14 wherein changing the voltage level of the power line from the first voltage level to the second voltage level is changing the voltage level of the power line from a high voltage level to a low voltage level.
17. The method of claim 14 wherein changing the voltage level of the power line from the first voltage level to the second voltage level is changing the voltage level of the power line from a low voltage level to a high voltage level.