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- Nachgewiesen in: USPTO Patent Grants
- Sprachen: English
- Patent Number: 7,609,254
- Publication Date: October 27, 2009
- Appl. No: 11/055861
- Application Filed: February 11, 2005
- Assignees: Chi Mei Optomelectronics Corp. (TW)
- Claim: 1. A signal driving system for a display, comprising: a signal controller, for producing a first control signal; a flexible connector, for connecting to the signal controller and receiving the first control signal; a first driving device and at least one second driving device, the first driving device and the second driving device connected in series, the first driving device connected to the flexible connector, the first driving device having a first data input port, a first converting device, a first data output port and a first driving signal output port, the first data input port used for receiving the first control signal, the first converting device disposed between the first data input port and the first data output port, and used for converting the first control signal to a second control signal, the first data output port used for outputting the second control signal to the second driving device, the first driving signal output port connected to the first converting device, and used for transmitting a first driving signal; the second driving device having a second data input port, a second data output port and a second driving signal output port, the second data input port used for receiving the second control signal from the first driving device, and connected to the second data output port so as to transmit the second control signal to the second data output port, the second driving signal output port connected between the second data input port and the second data output port, and used for transmitting a second driving signal according to the second control signal, wherein the first control signal has an amplitude that varies between a first range of voltage levels, and the second control signal has an amplitude that varies between a second range of voltage levels that is larger than the first range of voltage levels.
- Claim: 2. The signal driving system according to claim 1 , wherein the signal driving system comprises a plurality of second driving devices, and the first driving device and the second driving devices are connected in series and in sequence.
- Claim: 3. The signal driving system according to claim 1 , wherein the signal driving system comprises a plurality of second driving devices, the second driving devices are divided into a first group of second driving devices and a second group of second driving devices, the first driving device disposed between the first group and the second group, the first driving device transmitting the second control signal to the second driving devices of the first group and the second driving devices of the second group.
- Claim: 4. The signal driving system according to claim 2 , wherein each of the second driving devices comprises a second converting device connected between the second data input port and the second data output port, the second converting device used for transmitting the second control signal of the second data input port to the second data output port.
- Claim: 5. The signal driving system according to claim 3 , wherein each of the second driving devices comprises a second converting device connected between the second data input port and the second data output port, the second converting device used for transmitting the second control signal of the second data input port to the second data output port.
- Claim: 6. The signal driving system according to claim 4 , wherein the first converting device comprises a converter, a multiplexer and a buffer, the converter used for converting the first control signal to the second control signal, the multiplexer having at least two input terminals connected respectively to the first data input port and the converter, and used for controlling the second control signal transmitted to the first data output port, the buffer connected between the multiplexer and the first data input port.
- Claim: 7. The signal driving system according to claim 5 , wherein the first converting device comprises a converter, a multiplexer and a buffer, the converter used for converting the first control signal to the second control signal, the multiplexer having at least two input terminals connected respectively to the first data input port and the converter, and used for controlling the second control signal transmitted to the first data output port, the buffer connected between the multiplexer and the first data input port.
- Claim: 8. The signal driving system according to claim 6 , wherein the second converting device comprises a converter, a multiplexer and a buffer.
- Claim: 9. The signal driving system according to claim 7 , wherein the second converting device comprises a converter, a multiplexer and a buffer.
- Claim: 10. The signal driving system according to claim 1 , wherein the first control signal is a Reduced Swing Differential Signal.
- Claim: 11. The signal driving system according to claim 1 , wherein the second control signal is a Transistor Transistor Logic signal.
- Claim: 12. The signal driving system according to claim 11 , wherein the first control signal is a Reduced Swing Differential Signal.
- Claim: 13. The signal driving system according to claim 1 , further comprising one of a Chip on Glass (COG) substrate and Wiring on Array (WOA) substrate on which the first and second driving devices are provided.
- Claim: 14. The signal driving system of claim 1 , wherein the first control signal is according to a first format, and the second control signal is according to a second, different format.
- Claim: 15. A liquid crystal display (LCD) device, comprising: pixels and associated thin-film transistors (TFTs); a first driving device to provide a first driving signal to one of the TFTs; a second driving device connected in series with the first driving device, the second driving device to provide a second driving signal to another one of the TFTs; a signal controller to produce a first control signal, wherein the first driving device includes a converter to convert the first control signal into a second control signal, the first driving device to generate the first driving signal according to the first control signal, and the first driving device to provide the second control signal to the second driving device, wherein the second driving device is to generate the second driving signal according to the second control signal, and wherein the first control signal has an amplitude that varies between a first range of the voltage levels, and the second control signal has an amplitude that varies between a second range of voltage levels, wherein the second range is larger than the first range.
- Claim: 16. The LCD device of claim 15 wherein the first control signal is a Reduced Swing Differential Signal, and the second control signal is a Transistor Transistors Logic signal.
- Claim: 17. The LCD device of claim 15 , comprising a plurality of second driving devices, the first driving device and the second driving devices connected in series.
- Claim: 18. A display device, comprising: a plurality of pixels controlled by corresponding thin film transistors; a signal controller, for producing a first control signal; a connector, for connecting to the signal controller and receiving the first control signal; and a first driving device and at least one second driving device, the first driving device and the second driving device connected in series, the first driving device connected to the connector, the first driving device having a first data input port, a first converting device a first data output port and a first driving signal output port, the first data input port used for receiving the first control signal having a first signal format, the first convening device disposed between the first data input port and the first data output port, and used for converting the first control signal to a second control signal having a second, different signal format, the first data output port used for outputting the second control signal to the second driving device, the first driving signal output port connected to the first converting device, and used for transmitting a first driving signal to a corresponding thin film transistor; the second driving device having a second data input port, a second data output port and a second driving signal output port, the second data input port used for receiving the second control signal from the first driving device, and connected to the second data output port so as to transmit the second control signal to the second data output port, the second driving signal output port connected between the second data input port and the second data output port, and used for transmitting a second driving signal according to the second control signal to a corresponding thin film transistor, wherein the first control signal has an amplitude that varies between a first range of the voltage levels, and the second control signal has an amplitude that varies between a second range of voltage levels, wherein the second range is larger than the first range.
- Claim: 19. The display device of claim 18 , wherein the first control signal is a Reduced Swing Differential Signal, and the second control signal is a Transistor Transistor Logic signal.
- Current U.S. Class: 345/204
- Patent References Cited: 6847346 January 2005 Kumagai et al. ; 2004/0135757 July 2004 Park et al.
- Assistant Examiner: Leiby, Christopher E
- Primary Examiner: Tran, Henry N
- Attorney, Agent or Firm: Trop, Pruner & Hu, P.C.
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