CN104063199A - Data transmission method of LCD (liquid crystal display) driver based on RGB (red, green and blue) interface - Google Patents
Data transmission method of LCD (liquid crystal display) driver based on RGB (red, green and blue) interface Download PDFInfo
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Abstract
The invention discloses a data transmission method of an LCD driver based on an RGB interface. The method comprises the steps as follows: a synchronous clock (DOTCLOCK) signal is provided; a sending terminal transmits data to a data line (DB) at the rising edge and the falling edge of the synchronous clock (DOTCLOCK) signal; the LCD driver responds to the synchronous clock (DOTCLOCK) signal and receives data at an adjacent rising edge and a falling edge of the synchronous clock (DOTCLOCK) signal or at an adjacent falling edge and a rising edge through the data line (DB). The invention also provides a clock edge selection signal. The clock edge selection signal is used for controlling the LCD driver to receive data through the rising edge and the falling edge of the synchronous clock (DOTCLOCK) signal or only the rising or the falling edge of the synchronous clock (DOTCLOCK) signal.
Description
Technical field
The present invention relates to a kind of data transmission method, relate in particular to a kind of method of data transmission of the lcd driver based on rgb interface.
Background technology
Increasingly mature along with liquid crystal technology, liquid crystal display (LCD) has obtained application more and more widely in display technique.The conventional interface mode of existing liquid crystal display has MCU interface and rgb interface, adopt the lcd driver of rgb interface without GRAM, but it is upper directly the data of demonstration to be write to screen, data rate is fast, so rgb interface is widely used in large-size screen monitors lcd driver.
But along with mobile phone etc. is to need to day by day the increasing of display video or animation, rgb interface is also driven chip to adopt by smaller screen more and more.The line of rgb interface generally has: frame synchronizing signal (VSYNC), and line synchronizing signal (HSYNC), synchrodata clock (DOTCLK), data enable (ENABLE), and data line (DB), wherein data bit transmission has 6, and 16 and 18 divide.
Fig. 1 shows the working timing figure of traditional lcd driver based on rgb interface, wherein the clock of rgb interface and data all adopt serial transmission mode, normally transmitting terminal sends data at rising edge clock, receiving end is in negative edge sampled data, or transmitting terminal sends data at clock negative edge, receiving end is in rising edge clock sampled data.But, along with the increase of multimedia service and various new functions, for example, mobile TV, video multimedia etc. are also more and more higher to the requirement of the transfer rate of the lcd driver based on rgb interface.
For this reason, proposed the scheme of the transfer rate of the lcd driver of multiple raising based on rgb interface, wherein traditional scheme is under the Data Transport Protocol of rgb interface, is improved clock frequency or increased data line width to complete by employing.Yet, improve clock frequency and can bring problems of Signal Integrity, increase data line width and can take more pin resource, all can drive the performance of chip to bring adverse effect and increase LCD to LCD to drive chip manufacturing cost.
Therefore, how, in the situation that not changing clock frequency and data line width, improving the transfer rate of the lcd driver based on rgb interface, is current problem demanding prompt solution.
The information that is disclosed in this background of invention technology part is only intended to deepen the understanding to general background technology of the present invention, and should not be regarded as admitting or imply that in any form this information structure has been prior art known in those skilled in the art.
Summary of the invention
The object of the invention is to, in the situation that not changing clock frequency and data line width, the transfer rate of the lcd driver of raising based on rgb interface, avoids improving the problems of Signal Integrity that clock frequency brings or increases more pin resource problems that take that data line broadband comes.
For reaching this object, the present invention proposes a kind of method of data transmission of the lcd driver based on rgb interface, the method comprises: a synchronous clock (DOTCLOCK) signal is provided; Transmitting terminal transmits data at rising edge and the negative edge of synchronous clock (DOTCLOCK) signal to data line; Described lcd driver receives data at the adjacent rising edge of described synchronous clock (DOTCLOCK) signal and negative edge or adjacent negative edge and rising edge by data line (DB) in response to described synchronous clock (DOTCLOCK) signal.
Preferably, judge that whether the rising edge of described synchronizing clock signals or negative edge arrive, and are if so, latched into the current data on data line (DB) in output register; If not, keep the data in described output register.
Preferably, judging whether the rising edge of described synchronizing clock signals or negative edge arrive comprises: judge that the current sampled level of described synchronous clock (DOTCLOCK) signal was with last time whether sampled level was identical, if not identical, rising edge or negative edge arrive.
Preferably, by described output register, judge whether the rising edge of described synchronizing clock signals or negative edge arrive.
Preferably, described output register is preserved the adjacent rising edge of described synchronous clock (DOTCLOCK) signal and negative edge or adjacent negative edge and rising edge by data line (DB) received data.
Preferably, also provide a clock edge to select signal, described clock edge selects signal to be used for controlling rising edge or the negative edge reception data that lcd driver utilizes rising edge and the negative edge of described synchronizing clock signals (DOTCLOCK) simultaneously or only utilizes described synchronizing clock signals (DOTCLOCK).
Preferably, when described clock edge, select signal designation and utilize the rising edge of described synchronizing clock signals (DOTCLOCK) and negative edge to receive in the situation of data simultaneously, rising edge and negative edge data that the output of the output register of described lcd driver is preserved.
Preferably, when described clock edge, select signal designation and only utilize the rising edge of described synchronizing clock signals (DOTCLOCK) or negative edge to receive in the situation of data, rising edge or negative edge data that the output of the output register of described lcd driver is preserved.
Preferably, also provide a clock edge to select signal, select signal and described synchronous clock (DOTCLOCK) signal to do logical operation described clock edge and obtain an output register clock signal, described output register clock signal is used for controlling output register and receives data or only at rising edge or negative edge, receive data at rising edge and the negative edge of described synchronizing clock signals (DOTCLOCK).
Preferably, judging whether the rising edge of described synchronizing clock signals or negative edge arrive comprises: judge that the current sampled level of described synchronous clock (DOTCLOCK) signal was with last time whether sampled level was identical, if not identical, rising edge or negative edge arrive.
Preferably, by described output register, judge whether the rising edge of described synchronizing clock signals or negative edge arrive.
Preferably, when output register clock signal indication output register is in the situation that rising edge and the negative edge of described synchronizing clock signals (DOTCLOCK) receive data, described output register is preserved the adjacent rising edge of described synchronous clock (DOTCLOCK) signal and negative edge or adjacent negative edge and rising edge by data line (DB) received data.
Preferably, when output register clock signal indication output register, in the situation that the rising edge of described synchronizing clock signals (DOTCLOCK) or negative edge receive data, rising edge or negative edge that described output register is preserved described synchronous clock (DOTCLOCK) signal pass through data line (DB) received data.
Preferably, described output register is D type register.
The present invention, in the situation that not changing clock frequency and data line width, utilizes the rising edge of clock signal and negative edge to transmit data, has greatly improved the transfer rate of the lcd driver based on rgb interface.And from signal integrity angle, clock line frequency ratio data line frequency in tradition rgb interface agreement doubles, the present invention does not change clock frequency and data line width, but data line frequency is doubled identical with clock line frequency, so improve bus transfer rate, and can not bring the variation of board level system design.
By the embodiment of including accompanying drawing herein in and being used from subsequently explanation some principle of the present invention with accompanying drawing one, the further feature that method and apparatus of the present invention has and advantage will become clear or more specifically be illustrated.
Accompanying drawing explanation
Should understand, appended accompanying drawing has not shown the technique of painting of slightly simplifying of the exemplifying various features of ultimate principle of the present invention pari passu.Specific design feature of the present invention disclosed herein for example comprises that concrete size, direction, position and profile will partly will be applied and the environment of use is determined by concrete.
Fig. 1 shows the working timing figure of traditional lcd driver based on rgb interface;
Fig. 2 shows according to the schematic diagram of the method for the data transmission of a kind of lcd driver based on rgb interface of first embodiment of the invention;
Fig. 3 shows according to the schematic diagram of the method for the data transmission of a kind of lcd driver based on rgb interface of second embodiment of the invention;
Fig. 4 shows according to the schematic diagram of the method for the data transmission of a kind of lcd driver based on rgb interface of third embodiment of the invention.
Embodiment
Below with detailed reference to various embodiments of the present invention, during its example is presented at accompanying drawing and below describes.Although described the present invention in conjunction with exemplary embodiment, should be appreciated that, this instructions is not intended to the present invention to be limited to these exemplary embodiments.On the contrary, the present invention is not only intended to cover these exemplary embodiments, and covering is included in various substitutes, modification, equivalent and other embodiment in the spirit and scope of the invention that limited by appended claims.
The present invention proposes a kind of method of data transmission of the lcd driver based on rgb interface, the method utilizes the rising edge of synchronizing clock signals DOTCLOCK and negative edge to receive data, keeping clock frequency and data width all under constant prerequisite, improve the transfer rate of the lcd driver based on rgb interface.
The method of the data transmission of the described lcd driver based on rgb interface comprises:
One synchronous clock DOTCLOCK signal is provided, and described synchronous clock DOTCLOCK signal can be provided by transmitting terminal, also can be provided by special clock generator;
Transmitting terminal transmits data at rising edge and the negative edge of synchronous clock DOTCLOCK signal to data line DB;
Described lcd driver receives data at the adjacent rising edge of described synchronous clock DOTCLOCK signal and negative edge or adjacent negative edge and rising edge by data line DB in response to described synchronous clock DOTCLOCK signal.
Only utilize the rising edge (or negative edge) of synchronous clock DOTCLOCK signal to transmit data with traditional transmitting terminal, receiving end only utilizes the negative edge (or rising edge) of synchronous clock DOTCLOCK signal to receive data (, within a clock period, only transmit the data of a unit data line width) scheme different, transmitting terminal in method of the present invention utilizes synchronous clock DOTCLOCK signal rising edge and negative edge to lcd driver, to send data by data line DB, and lcd driver utilizes the rising edge of synchronous clock DOTCLOCK signal and negative edge to receive data (, within a clock period, transmit the data of two unit data line widths), thereby the transfer rate of lcd driver is doubled.Here " unit data line data " refer to the figure place of the data that data line can transmit at every turn, for example, 6,16 or 18.
Described lcd driver receives data at the adjacent rising edge of described synchronous clock DOTCLOCK signal and negative edge or adjacent negative edge and rising edge by data line DB in response to described synchronous clock DOTCLOCK signal and comprises: first lcd driver judges whether the rising edge of described synchronizing clock signals or negative edge arrive, if so, the current data on data line DB is latched in output register; If not, keep the data in described output register, thereby in output register, preserved by the adjacent rising edge at described synchronous clock DOTCLOCK signal and negative edge or adjacent negative edge and the data of rising edge transmission, the i.e. data of two unit data line widths of described output register preservation.According to each embodiment of the present invention, the twice of the width that the size of described output register is data line, for example, is 12,32 or 36.
Wherein, whether the rising edge or the negative edge that judge described synchronizing clock signals arrive and can realize by decision level,, judge the current sampled level of described synchronous clock DOTCLOCK signal and last time whether sampled level was identical that is, if not identical, rising edge or negative edge arrive.Alternatively, also can judge by for example output register of D type flip-flop rising edge or the negative edge of clock signal, in the present embodiment, described output register can adopt bilateral along D type flip-flop, when rising edge or negative edge, described bilateral along D type flip-flop data on latch data line all.
Then, output register exports the data of two unit data line widths preserving to GRAM(graphics random access storer, graphics random access memory), thus realized lcd driver transmits the data of two unit data line widths within a clock period.
In one embodiment, the method of the data transmission of the described lcd driver based on rgb interface also can provide a clock edge and select signal, described clock edge selects signal to utilize rising edge and the negative edge of described synchronizing clock signals DOTCLOCK simultaneously or only utilize the rising edge of described synchronizing clock signals DOTCLOCK or negative edge to receive data for controlling lcd driver, described clock edge selects signal to be provided by clock edge selector switch, in the present embodiment, described clock edge selector switch can be realized by register.
Wherein, can to clock edge selector switch, arrange as required, for example, when needing high-speed data service transmission, can be set to and control rising edge and the negative edge reception data that lcd driver utilizes described synchronizing clock signals DOTCLOCK simultaneously, and carry out being set to and only utilizing the rising edge of described synchronizing clock signals DOTCLOCK or negative edge to receive data when low-speed data service transmits.
When described clock edge, select signal designation lcd driver utilizes the rising edge of described synchronizing clock signals DOTCLOCK and negative edge to receive in the situation of data simultaneously, described output register by the data of preserved rising edge and negative edge transmission (, the data of two unit data line widths) export GRAM to, thereby when realizing lcd driver, utilize the rising edge of described synchronizing clock signals DOTCLOCK and negative edge to receive data; When described clock edge, selecting signal designation lcd driver only utilizes the rising edge (or negative edge) of described synchronizing clock signals (DOTCLOCK) to receive in the situation of data, the output register of described lcd driver by rising edge (or negative edge) data in the data of preserved rising edge and negative edge transmission (, the data of a unit data line width) export GRAM to, thereby realize lcd driver, only utilize the rising edge of described synchronizing clock signals DOTCLOCK or negative edge to receive data.Therefore, the present invention selects signal to make lcd driver configuration data transfer rate as required by the clock edge providing, thereby meets the needs of different transport services.
In another embodiment, the method of the data transmission of the described lcd driver based on rgb interface also provides a clock edge and selects signal, and select signal and described synchronous clock DOTCLOCK signal to do logical operation described clock edge and obtain an output register clock signal, described output register clock signal receives data or only at rising edge or negative edge, receives data at rising edge and the negative edge of described synchronizing clock signals DOTCLOCK for controlling output register.Wherein, described clock edge selects signal to be provided by clock edge selector switch, and in the present embodiment, described clock edge selector switch can be realized by register; Described logical operation can realize by arithmetical unit.
Wherein, whether the rising edge or the negative edge that judge described synchronizing clock signals arrive and can realize by decision level,, judge the current sampled level of described synchronous clock DOTCLOCK signal and last time whether sampled level was identical that is, if not identical, rising edge or negative edge arrive.Alternatively, also can by for example output register of D type flip-flop, judge rising edge or the negative edge of clock signal, in the present embodiment, described output register can comprise a upper edge D type flip-flop and a lower edge D type flip-flop.
When output register clock signal indication output register is in the situation that the rising edge of described synchronizing clock signals DOTCLOCK and negative edge receive data, upper edge D type flip-flop and the lower edge D type flip-flop of described output register are all effective, and described upper edge D type flip-flop and lower edge D type flip-flop latch respectively the adjacent rising edge of described synchronous clock DOTCLOCK signal and negative edge or adjacent negative edge and rising edge by data line DB received data, , described output register is preserved the data of two unit data line widths, then, described output register exports preserved data to GRAM, thereby realized lcd driver and within a clock period, transmitted the data of two unit data line widths.
When output register clock signal is indicated output register in the situation that the rising edge of described synchronizing clock signals DOTCLOCK (or negative edge) receives data, in the upper edge D type flip-flop of described output register and lower edge D type flip-flop, only upper edge D type flip-flop (or lower edge D type flip-flop) is effective, described upper edge D type flip-flop (or lower edge D type flip-flop) is preserved the rising edge (or negative edge) of described synchronous clock DOTCLOCK signal by data line DB received data, , the nearly data of preserving a unit data line width of described output register, then, described output register exports preserved data to GRAM, thereby realized lcd driver and within a clock period, transmitted the data of a unit data line width.
Below, by each embodiment, illustrate the preferred implementation of the method according to this invention.
Fig. 2 shows according to the schematic diagram of the method for the data transmission of a kind of lcd driver based on rgb interface of first embodiment of the invention.As shown in Figure 2, at the rising edge of synchronous clock DOTCLOCK signal, transmitting terminal 210 above sends the data of a unit data line width of data DATA(of 18 to the data line DB of 18); At receiving end, output register 222 is latched into the described data DATA of 221 transmission of the rgb interface by lcd driver 220 in its first 18 after the rising edge that obtains synchronous clock DOTCLOCK signal.Wherein, described output register 222 is the D type register of 36, and first 18 in this output register 222 are latched rising edge data, thereafter 18 data of transmitting for latching negative edge.
Negative edge at synchronous clock DOTCLOCK signal, transmitting terminal 210 is to the upper data DATA that sends of described data line DB, at receiving end, during output register 222 is latched into the described data DATA of 221 transmission of the rgb interface by lcd driver 220 thereafter 18 after the negative edge that obtains synchronous clock DOTCLOCK signal.
Then, described output register 222 outputs to the data wherein preserved (data of two unit data line widths) in GRAM, in a rising edge and adjacent negative edge, transmits the data of two unit data line widths.
Fig. 3 shows according to the schematic diagram of the method for the data transmission of a kind of lcd driver based on rgb interface of second embodiment of the invention.Compare with the first embodiment shown in Fig. 2, the difference of the second embodiment shown in Fig. 3 is: also provide a clock edge and select signal, described clock edge selects output register 322 described in signal controlling obtaining all latch datas or only at the rising edge or the negative edge latch data that obtain described synchronizing clock signals DOTCLOCK of the rising edge of described synchronizing clock signals DOTCLOCK and negative edge, described clock edge selects signal to be provided by clock edge selector switch 323, and described clock edge selector switch 323 is realized by register.
At described clock edge, select described in signal designation output register 322 only in the situation that obtain the rising edge latch data of described synchronizing clock signals DOTCLOCK, at the rising edge of synchronous clock DOTCLOCK signal, transmitting terminal 310 is to the upper data that send a unit data line width of data DATA(of data line DB); At receiving end, output register 322 is latched into the described data DATA of 321 transmission of the rgb interface by lcd driver 320 in its first 18 after the rising edge that obtains synchronous clock DOTCLOCK signal.
At the negative edge of synchronous clock DOTCLOCK signal, transmitting terminal 310 is to the upper data DATA that sends of described data line DB, and at receiving end, output register 322 keeps the data that latch.
Then, output register 322 outputs to GRAM by the data (data of a unit data line width) in its first 18, in a rising edge and adjacent negative edge, transmits the data of a unit data line width.
At described clock edge, select output register 322 described in signal designation in the situation that obtain the rising edge of described synchronizing clock signals DOTCLOCK and negative edge latch data all, the operation of transmitting terminal 310 and lcd driver 320 is identical with the first embodiment, will no longer be described in detail herein.
Fig. 4 shows according to the schematic diagram of the method for the data transmission of a kind of lcd driver based on rgb interface of third embodiment of the invention.Compare with the first embodiment shown in Fig. 2, the difference of the 3rd embodiment shown in Fig. 4 is: provide a clock edge and select signal, by arithmetical unit 424, select signal and synchronous clock DOTCLOCK signal to do logical operation described clock edge and obtain an output register clock signal, described output register clock signal is for controlling output register 422 and export the data of preserving at rising edge and the negative edge of described synchronizing clock signals DOTCLOCK or only export the data of preserving at rising edge or negative edge.Described clock edge selects signal to be provided by clock edge selector switch 423, and described clock edge selector switch 423 is realized by register.
Particularly, at transmitting terminal 410, at rising edge and the negative edge of described synchronous clock DOTCLOCK signal, on data line DB, send data, and output register 422 has latched after described synchronous clock DOTCLOCK signal rising edge and negative edge are by the data (data of two unit data line widths) of rgb interface 421 transmission of lcd driver 420 (this process is identical with the first embodiment), if the data that described output register clock signal indicates described output register 422 outputs to preserve at rising edge and the negative edge of described synchronizing clock signals DOTCLOCK, output register 422 is exported its total datas of preserving, in a rising edge and adjacent negative edge, transmit the data of two unit data line widths.
If described output register clock signal indicates described output register 422 only to export the data of preserving at rising edge or negative edge, output register 422 is exported its rising edge data of preserving (data of a unit data line width) in a rising edge and adjacent negative edge, in next rising edge and adjacent negative edge, export its negative edge data of preserving (data of a unit data line width), in a rising edge and adjacent negative edge, transmit the data of a unit data line width.
Above the object in order to describe and to describe, has presented certain exemplary embodiments of the present invention.These exemplary embodiments are also non exhaustive, or limit the invention to disclosed precise forms, significantly, according to many modifications and variations of above-mentioned teaching, are all feasible.Selecting and describing these exemplary embodiments is in order to explain certain principles of the present invention and practical application thereof, thereby those skilled in the art is manufactured and use each exemplary embodiment of the present invention, and various substitute and modification.In fact scope of the present invention is limited by appending claims and equivalent thereof.
Claims (14)
1. a method for the data transmission of the lcd driver based on rgb interface, the method comprises:
One synchronous clock (DOTCLOCK) signal is provided;
Transmitting terminal transmits data at rising edge and the negative edge of synchronous clock (DOTCLOCK) signal to data line (DB);
Described lcd driver receives data at the adjacent rising edge of described synchronous clock (DOTCLOCK) signal and negative edge or adjacent negative edge and rising edge by data line (DB) in response to described synchronous clock (DOTCLOCK) signal.
2. the method for the data transmission of the lcd driver based on rgb interface according to claim 1, it is characterized in that, whether the rising edge or the negative edge that judge described synchronizing clock signals arrive, and if so, the current data on data line (DB) are latched in output register; If not, keep the data in described output register.
3. the method for the data transmission of the lcd driver based on rgb interface according to claim 2, it is characterized in that, judging whether the rising edge of described synchronizing clock signals or negative edge arrive comprises: judge that the current sampled level of described synchronous clock (DOTCLOCK) signal was with last time whether sampled level was identical, if not identical, rising edge or negative edge arrive.
4. the method for the data transmission of the lcd driver based on rgb interface according to claim 2, is characterized in that, by described output register, judges whether the rising edge of described synchronizing clock signals or negative edge arrive.
5. the method for the data transmission of the lcd driver based on rgb interface according to claim 2, it is characterized in that, described output register is preserved the adjacent rising edge of described synchronous clock (DOTCLOCK) signal and negative edge or adjacent negative edge and rising edge by data line (DB) received data.
6. the method for the data transmission of the lcd driver based on rgb interface according to claim 5, it is characterized in that, also provide a clock edge to select signal, described clock edge selects signal to be used for controlling rising edge or the negative edge reception data that lcd driver utilizes rising edge and the negative edge of described synchronizing clock signals (DOTCLOCK) simultaneously or only utilizes described synchronizing clock signals (DOTCLOCK).
7. the method for the data transmission of the lcd driver based on rgb interface according to claim 6, it is characterized in that, when described clock edge, select signal designation and utilize the rising edge of described synchronizing clock signals (DOTCLOCK) and negative edge to receive in the situation of data simultaneously, rising edge and negative edge data that the output of the output register of described lcd driver is preserved.
8. the method for the data transmission of the lcd driver based on rgb interface according to claim 6, it is characterized in that, when described clock edge, select signal designation and only utilize the rising edge of described synchronizing clock signals (DOTCLOCK) or negative edge to receive in the situation of data, rising edge or negative edge data that the output of the output register of described lcd driver is preserved.
9. the method for the data transmission of the lcd driver based on rgb interface according to claim 1, it is characterized in that, also provide a clock edge to select signal, select signal and described synchronous clock (DOTCLOCK) signal to do logical operation described clock edge and obtain an output register clock signal, described output register clock signal is used for controlling output register and receives data or only at rising edge or negative edge, receive data at rising edge and the negative edge of described synchronizing clock signals (DOTCLOCK).
10. the method for the data transmission of the lcd driver based on rgb interface according to claim 9, it is characterized in that, judging whether the rising edge of described synchronizing clock signals or negative edge arrive comprises: judge that the current sampled level of described synchronous clock (DOTCLOCK) signal was with last time whether sampled level was identical, if not identical, rising edge or negative edge arrive.
The method of the data transmission of 11. lcd drivers based on rgb interface according to claim 9, is characterized in that, by described output register, judges whether the rising edge of described synchronizing clock signals or negative edge arrive.
The method of the data transmission of 12. lcd drivers based on rgb interface according to claim 9, it is characterized in that, when output register clock signal indication output register is in the situation that rising edge and the negative edge of described synchronizing clock signals (DOTCLOCK) receive data, described output register is preserved the adjacent rising edge of described synchronous clock (DOTCLOCK) signal and negative edge or adjacent negative edge and rising edge by data line (DB) received data.
The method of the data transmission of 13. lcd drivers based on rgb interface according to claim 9, it is characterized in that, when output register clock signal indication output register, in the situation that the rising edge of described synchronizing clock signals (DOTCLOCK) or negative edge receive data, rising edge or negative edge that described output register is preserved described synchronous clock (DOTCLOCK) signal pass through data line (DB) received data.
14. according to the method for the data transmission of the lcd driver based on rgb interface described in claim 4 or 11, it is characterized in that, described output register is D type register.
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| CN201310092494.6A CN104063199A (en) | 2013-03-21 | 2013-03-21 | Data transmission method of LCD (liquid crystal display) driver based on RGB (red, green and blue) interface |
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| CN201310092494.6A CN104063199A (en) | 2013-03-21 | 2013-03-21 | Data transmission method of LCD (liquid crystal display) driver based on RGB (red, green and blue) interface |
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Application publication date: 20140924 |
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