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Liquid crystal display possessing source cathode drive and data transmission method

A source driver and liquid crystal display technology, applied in static indicators, instruments, etc., can solve the problems of high cost of liquid crystal display, high load of timing controller, large layout area, etc.

Inactive Publication Date: 2008-03-26
HIMAX TECH LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such a large number of buses will occupy a larger layout area on the printed circuit board (PCB), making the cost of the liquid crystal display higher
At the same time, such a large number of buses will make the timing controller have a higher load

Method used

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  • Liquid crystal display possessing source cathode drive and data transmission method
  • Liquid crystal display possessing source cathode drive and data transmission method
  • Liquid crystal display possessing source cathode drive and data transmission method

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0041]Please refer to FIG. 3A , which shows a circuit connection diagram of the timing controller 202 and the source driver 204 when the source driver 204 operates in the first mirroring operation mode. When the source driver 204 operates in the first mapping mode, the receiving units 210, 212 and the transmission paths 204b3, 204b4 are disabled (at this time, the disabled receiving units 210, 212 and the transmission paths 204b3, 204b4 are indicated by dotted lines ), and the transmission paths 204b1 and 204b2 are enabled. In this way, the timing controller 202 can only output the red sub-pixel data to the receiving units 206 and 208 through the buses 2051 - 2054 , and the registers 214 and 216 are respectively coupled in series with the registers 218 and 220 .

[0042] Please refer to FIG. 3B , which shows a timing diagram of bit data on the buses 2051 - 2054 when the source driver 204 operates in the first mapping operation mode.

[0043] At the rising edge (Rising Edge) o...

no. 2 example

[0060] Please refer to FIG. 6A , which shows a circuit connection diagram of the timing controller 202 and the source driver 204 when the source driver 204 operates in the second mirroring operation mode. Wherein, the source driver 204 operating in the second mapping operation mode is different from the source driver 204 operating in the first mapping operation mode in that the non-enabled receiving unit and the data transmission path are different, and at the same time, through different The bus to receive the bit data Bit0-Bit7 output by the timing controller 202. When the source driver 204 operates in the second mapping operation mode, the receiving units 206 and 208 and the transmission paths 204b1 and 204b2 are disabled (at this time, the disabled receiving units 206, 208 and the transmission paths 204b3 and 204b4 are denoted by dashed lines express). And the transmission paths 204b3 and 204b4 are enabled.

[0061]Please refer to FIG. 6B , which shows a timing diagram o...

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Abstract

A data transmission method for inputting data signals into an electronic device is disclosed. The data signals comprise a first group of data signals and a second group of data signals, the electronic device comprises a first, a second, a third and a fourth receiving unit and corresponding first, second, third and fourth register. The transmission method includes: non-enabling the first and second receiving unit; in the first sequence period of sequence signals, inputting the first group of data signals passing through the third and the fourth receiving unit into the third and the fourth register of the electronic device; in the second sequence period of the sequence signals, inputting the second group of signals passing through the third and the fourth receiving unit into the third and the fourth register of the electronic device, at the same time inputting the first group of data signals in the third and the fourth register into the first and the second register of the electronic device.

Description

technical field [0001] The present invention relates to a data transmission method of a liquid crystal display, and in particular to a data transmission method of a liquid crystal display which reduces the number of buses (Bus) between a source driver and a timing controller. Background technique [0002] Please refer to FIG. 1A and FIG. 1B , which illustrate a partial circuit diagram of a traditional liquid crystal display and a timing diagram of some signals thereof. The liquid crystal display 100 includes a timing controller (Timing Controller) 102 , buses 1051 - 1058 , a source driver (Source Driver) 104 and a pixel matrix (not shown). The source driver 104 includes a receiver 104a and a linear buffer 104b. Each pixel of the pixel matrix includes red, green and blue sub-pixels, and the sub-pixel data of the sub-pixels of each color includes 8 bit data, for example, the sub-pixel data of the red sub-pixel includes red bit data Bit0-Bit7. In FIGS. 1A and 1B , the related...

Claims

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Application Information

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IPC IPC(8): G09G3/36G09G3/20G02F1/133
Inventor 陈建淳陈英烈卜令楷
Owner HIMAX TECH LTD
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