CN100520897C - Liquid crystal display capable of selecting interlaced scanning or line by line scanning driving and driving method - Google Patents
Liquid crystal display capable of selecting interlaced scanning or line by line scanning driving and driving method Download PDFInfo
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- CN100520897C CN100520897C CNB2006100740374A CN200610074037A CN100520897C CN 100520897 C CN100520897 C CN 100520897C CN B2006100740374 A CNB2006100740374 A CN B2006100740374A CN 200610074037 A CN200610074037 A CN 200610074037A CN 100520897 C CN100520897 C CN 100520897C
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Abstract
The present invention relates to a liquid crystal display. It includes a liquid crystal display panel; a drive circuit, it is coupled with said liquid crystal display panel and is used for driving said liquid crystal display panel; an internal memory, it is coupled with said drive circuit; a microcontroller, it is used for outputting graphic data to said internal memory; a selection device, it is used for selecting said drive circuit mode from alternating-line scanning mode and line-by-line scanning mode to drive said liquid crystal display panel according to the graphic data outputted by said microcontroller; and a control device, it is used for controlling said drive circuit to drive said liquid crystal display panel by using the mode selected by selection device.
Description
Technical field
The present invention relates to a kind of LCD and correlation technique of selecting with interlaced scan mode or progressive scanning mode driving thereof, particularly a kind of graph data of exporting according to microcontroller is selected LCD and the correlation technique thereof with interlaced scan mode or progressive scanning mode driving.
Background technology
Along with making rapid progress of science and technology, the intelligent information products of frivolous, power saving, portable have been full of our living space, display has then been played the part of considerable role betwixt, no matter be mobile phone, personal digital assistant or mobile computer, all need the interface of display as man-machine communication.Wherein LCD has that external form is frivolous, power consumption is few and characteristic such as radiationless pollution, individual desktop PC screen, mobile computer, PDA(Personal Digital Assistant) have been widely used in, and on the portable type information products such as mobile phone, and existing cathode-ray tube (CRT) (cathode ray tube, CRT) trend of monitor that replaces traditional desktop PC gradually.Because liquid crystal molecule is under different ordered states, light had different polarizations or refraction effect, therefore can control the amount of penetrating of light via the liquid crystal molecule of different ordered states, further produce the output light of varying strength, and LCD promptly is to utilize this specific character of liquid crystal molecule to produce red, blue, the green glow of different GTG intensity, further makes LCD produce abundant image.
See also Fig. 1, Fig. 1 is the function block schematic diagram of an existing LCD 10, LCD 10 comprises a display panels 12, one drive circuit 14, be coupled in display panels 12, be used for driving display panels 12, one internal memory 16, be coupled in driving circuit 14, be used for store graphics data, it can be a static random access memory (Static Random Access Memory, SRAM), and one microcontroller 18 (Micro Control Unit MCU), is used for the output pattern data to internal memory 16.In addition, driving circuit 14 includes a section electrode drive circuit 20 (segmentel ectrodedriver), is coupled in internal memory 16, and one shares electrode drive circuit 22 (commonel ectrodedriver).The principle that LCD 10 drives display panels 12 is that the SEG signal that utilizes section electrode drive circuit 20 to be produced is done to cooperate with the COM signal that shared electrode drive circuit 22 is produced, shared electrode driving circuit 22 can drive a row pixel at every turn and come display image data, and section electrode drive circuit 20 can be imported corresponding picture signal according to the graph data that internal memory 16 is transmitted, when section electrode drive circuit 20 and shared electrode drive circuit 22 are chosen correct current potential simultaneously, just can drive the liquid crystal of display panels 12, make the liquid crystal molecule position change and produce change color.
In general, LCD 10 must be utilized 18 pairs of internal memories of microcontroller 16 to change storing value and set the image frame that will show, for instance, see also Fig. 2, the graph data that Fig. 2 is stored for internal memory 16 and the corresponding diagram of display panels 12 shown image frames, stored in the internal memory 16 " 0 " or " 1 " the pairing voltage of SEG signal of representing section electrode drive circuit 20 to produce, and the voltage difference between COM signal and the SEG signal just can cause the bright demonstration of display panels 12.And when changing the storing value of internal memory 16, the waveform of SEG signal also can change thereupon, meaning promptly when the storing value of internal memory 16 in " 0 " and " 1 " and between switching frequency when higher, then represent the waveform of SEG signal also can continuously change, the power consumption of driving circuit 14 also can thereby improve thus, for example working as LCD 10 figures to display is that the great figure of image change gap between previous column pixel and next column pixel is (as horizontal stripe shape figure (bar pattern), checkerboard figure (checker pattern) etc.) time, the power consumption of driving circuit 14 can than the situation that shows general figures get off big.See also Fig. 3, Fig. 3 is the existing synoptic diagram of COM signal and SEG signal when showing horizontal stripe shape figures with (progressive scan) the mode activated display panels 12 of lining by line scan, owing to be to drive display panels 12 with progressive scanning mode, so the driving of shared electrode driving circuit 22 is COM0 in proper order, COM1, COM2, COM3, by finding out among the figure when switching to the COM1 sweep trace by the COM0 sweep trace, because the storing value of internal memory 16 is served as reasons " 1 " switch to " 0 ", so SEG0, SEG1, SEG2, the output waveform of SEG3 sweep trace switches to electronegative potential by noble potential; In the time of should switching to the COM2 sweep trace by the COM1 sweep trace together, because the storing value of internal memory 16 is served as reasons " 0 " switch to " 1 ", so the output waveform of SEG0, SEG1, SEG2, SEG3 sweep trace switches to noble potential by electronegative potential; And when switching to the COM3 sweep trace by the COM2 sweep trace, because the storing value of internal memory 16 is served as reasons " 1 " switch to " 0 ", so the output waveform of SEG0, SEG1, SEG2, SEG3 sweep trace is switched back electronegative potential again by noble potential, so the waveform of SEG signal has switched between high electronegative potential three times in the process that shows this four row pixel, really can continuously change because of the current potential that continuous variation produced of SEG signal thus, and cause the raising of driving circuit 14 power consumption.
Summary of the invention
The invention provides a kind of the selection with staggered scanning (interlaced scan) pattern or (progressive scan) the pattern-driven LCD of lining by line scan, it includes a display panels, one drive circuit, be coupled in this display panels, be used for driving this display panels, one internal memory, be coupled in this driving circuit, one microcontroller (Micro Control Unit, MCU), be used for the output pattern data to this internal memory, one selecting arrangement, be used for the graph data exported according to this microcontroller by selecting this driving circuit to drive the pattern of this display panels in interlaced scan mode and the progressive scanning mode, and a control device, be used for controlling this driving circuit and drive this display panels with interlaced scan mode or progressive scanning mode according to the selected pattern of this selecting arrangement.
The present invention also discloses a kind of liquid crystal driver (LCD driver) of selecting to drive with interlaced scan mode or progressive scanning mode a display panels, it includes one drive circuit, be coupled in this display panels, be used for driving this display panels, one internal memory, be coupled in this driving circuit, be used for storing the graph data that a microcontroller is transmitted, one selecting arrangement, the graph data that is used for exporting according to this microcontroller is by selecting this driving circuit to drive the pattern of this display panels in interlaced scan mode and the progressive scanning mode, and a control device, be used for controlling this driving circuit and drive this display panels with interlaced scan mode or progressive scanning mode according to the selected pattern of this selecting arrangement.
The present invention also discloses a kind of selection and drives the method for a LCD with interlaced scan mode or progressive scanning mode, and it comprises the following step: (a) microcontroller of this LCD produces graph data; (b) whether the graph data of judging this microcontroller and being produced meets special pattern data; (c) according to the judged result of step (b) pattern by a display panels of selecting to drive this LCD in interlaced scan mode and the progressive scanning mode; And this display panels that (d) drives this LCD with interlaced scan mode or progressive scanning mode according to the selection result of step (c).
Description of drawings
Fig. 1 is the function block schematic diagram of available liquid crystal display.
The graph data that Fig. 2 stores for internal memory and the corresponding diagram of the shown image frame of display panels.
Fig. 3 is the existing synoptic diagram of COM signal and SEG signal when driving display panels and show horizontal stripe shape figure with progressive scanning mode.
Fig. 4 is the function block schematic diagram of LCD of the present invention.
Fig. 5 selects to drive with interlaced scan mode or progressive scanning mode the process flow diagram of display panels for the present invention.
The corresponding diagram of horizontal stripe shape graph data that Fig. 6 stores for internal memory and the shown horizontal stripe shape of display panels image frame.
The corresponding diagram of checkerboard graph data that Fig. 7 stores for internal memory and the shown checkerboard image frame of display panels.
The synoptic diagram of COM signal and SEG signal when Fig. 8 shows horizontal stripe shape figure for the present invention with the driven in interlaced scan mode display panels.
Fig. 9 selects to drive with interlaced scan mode or progressive scanning mode the process flow diagram of display panels for another embodiment of the present invention.
The corresponding diagram of continuous horizontal stripe shape graph data that Figure 10 stores for internal memory and the shown continuous horizontal stripe shape image frame of display panels.
The synoptic diagram of COM signal and SEG signal when Figure 11 drives display panels and shows the continuous horizontal stripe shape figure of Figure 10 with progressive scanning mode for the present invention.
The reference numeral explanation
10 LCD, 12 display panels
14 driving circuits, 16 internal memories
18 microcontrollers, 20 section electrode drive circuits
22 shared electrode driving circuits
50 LCD, 52 display panels
54 driving circuits, 56 internal memories
58 microcontrollers, 60 section electrode drive circuits
62 shared electrode driving circuits, 64 selecting arrangements
66 control device, 68 counters
70 comparers, 72 liquid crystal drivers
Step 100,102,104,106,108,110,112,114,116,118,120,200,202,204,206,208,210,212,214,216,218,220
Embodiment
See also Fig. 4, Fig. 4 is the function block schematic diagram of the present invention's one LCD 50, LCD 50 comprises a display panels 52, one drive circuit 54, be coupled in display panels 52, be used for driving display panels 52, one internal memory 56, be coupled in driving circuit 54, be used for store graphics data, it can be a static random access memory (Static Random Access Memory, SRAM), and one microcontroller 58 (Micro Control Unit MCU), is used for the output pattern data to internal memory 16.In addition, driving circuit 54 includes a section electrode drive circuit 60 (segmentel ectrodedriver), is coupled in internal memory 56, and one shares electrode drive circuit 62 (commonel ectrodedriver).The principle that LCD 50 drives display panels 52 is that the SEG signal that utilizes section electrode drive circuit 60 to be produced is done to cooperate with the COM signal that shared electrode drive circuit 62 is produced, shared electrode driving circuit 62 can drive a row pixel at every turn and come display image data, and section electrode drive circuit 60 can be imported corresponding picture signal according to the graph data that internal memory 56 is transmitted, when section electrode drive circuit 60 and shared electrode drive circuit 62 are chosen correct current potential simultaneously, just can drive the liquid crystal of display panels 52, make the liquid crystal molecule position change and produce change color.
See also Fig. 5, Fig. 5 is the process flow diagram of the present invention's selection with interlaced scan mode or progressive scanning mode driving display panels 52, and method of the present invention comprises the following step:
Step 100: the microcontroller 58 of LCD 50 produces graph data.
Step 102: selecting arrangement 64 judges whether the graph data that microcontroller 58 is produced meets special pattern data, if execution in step 104; Execution in step 114 then if not.
Step 104: the graph data that the counter 68 calculating microcontrollers 58 of selecting arrangement 64 are produced meets the number of these special pattern data.
Step 106: whether the numerical value that the comparer 70 differentiation counters 68 of selecting arrangement 64 are calculated is greater than a given number, if execution in step 108; Execution in step 114 then if not.
Step 108: selecting arrangement 64 selects driving circuit 54 with driven in interlaced scan mode display panels 52.
Step 110: control device 66 control Driver Circuit 54 are with driven in interlaced scan mode display panels 52.
Step 112: display panels 52 shows the image frame that corresponds to this graph data with interlaced scan mode.
Step 114: selecting arrangement 64 selects driving circuit 54 to drive display panels 52 with progressive scanning mode.
Step 116: control device 66 control Driver Circuit 54 drive display panels 52 with progressive scanning mode.
Step 118: display panels 52 shows the image frame that corresponds to this graph data with progressive scanning mode.
Step 120: finish.
Describe above-mentioned steps in detail at this, at first microcontroller 58 can produce graph data, and this graph data is sent to internal memory 56, and writing this graph data to the path of internal memory 56, selecting arrangement 64 can judge whether the graph data that microcontroller 58 is produced meets special pattern data, wherein, these special pattern data can be horizontal stripe shape figures (bar pattern) or be a checkerboard figure (checkerpattern) etc., meaning is the great figure of image change gap between previous column pixel and next column pixel, see also Fig. 6 and Fig. 7, the corresponding diagram of horizontal stripe shape graph data that Fig. 6 is stored for internal memory 56 and display panels 52 shown horizontal stripe shape image frames, the checkerboard graph data that Fig. 7 is stored for internal memory 56 and the corresponding diagram of display panels 52 shown checkerboard image frames, stored in the internal memory 56 " 0 " or " 1 " represent the pairing voltage of SEG signal of section electrode drive circuit 60 generations, and then cause the bright demonstration of display panels 52.And when changing the storing value of internal memory 56, the waveform of SEG signal also can change thereupon, meaning promptly exists when the storing value of internal memory 56 " 0 " and " 1 " and between switching frequency when higher, then represent the waveform of SEG signal also can continuously change, the power consumption of driving circuit 54 also can thereby improve thus, as Fig. 6 and shown in Figure 7, because it is too frequent that internal memory 56 storing values of previous column pixel and next column pixel change, so when showing horizontal stripe shape figure with the checkerboard figure, the power consumption of driving circuit 54 can than the situation that shows general figures get off greatly.
When the graph data of selecting device 64 to judge that microcontroller 58 is produced does not meet these special pattern data, represent that then the power consumption of driving circuit 54 do not bring up to a certain specific degrees, so the time selecting arrangement 64 can select driving circuits 54 to drive display panels 52 with progressive scanning mode, and export corresponding selection signal to control device 66, control device 66 just can control Driver Circuit 54 drive display panels 52 with progressive scanning mode, and display panels 52 just can show the image frame that corresponds to this graph data with progressive scanning mode; Maybe when the graph data of selecting device 64 to judge that microcontroller 58 is produced meets these special pattern data, the graph data that the counter 68 meeting accumulative total microcontrollers 58 of selecting arrangement 64 are produced meets the number of these special pattern data, when if the comparer 70 of selecting arrangement 64 is differentiated numerical value that counters 68 are calculated not greater than this given number, represent that then the power consumption of driving circuit 54 do not bring up to a certain specific degrees, so the time selecting arrangement 64 can select driving circuits 54 to drive display panels 52 with progressive scanning mode, and export corresponding selection signal to control device 66, control device 66 just can control Driver Circuit 54 drive display panels 52 with progressive scanning mode, and display panels 52 just can show the image frame that corresponds to this graph data with progressive scanning mode; But when if the comparer 70 of selecting arrangement 64 is differentiated numerical value that counters 68 are calculated greater than this given number, represent that then the power consumption of driving circuit 54 brought up to a certain specific degrees, so the time selecting arrangement 64 can select driving circuits 54 with driven in interlaced scan mode display panels 52, and export corresponding selection signal to control device 66, control device 66 just can control Driver Circuit 54 with driven in interlaced scan mode display panels 52, and display panels 52 just can show the image frame correspond to this graph data with interlaced scan mode, thus just can be with respect to the progressive scanning mode driven in interlaced scan mode display panels 52 of power saving comparatively.
For instance, see also Fig. 8, the synoptic diagram of COM signal and SEG signal when Fig. 8 shows horizontal stripe shape figure for the present invention with driven in interlaced scan mode display panels 52, owing to be with driven in interlaced scan mode display panels 52, so the time graph datas stored in the internal memory 56 can resequence, for example, use making the data that section electrode drive circuit 60 is transmitted according to internal memory 56 in regular turn produce corresponding SEG signal under interlaced scan mode with the data sorting of the odd column of corresponding graph data leading portion in the data of the even column of corresponding graph data; Or can be section electrode drive circuit 60 and jumping the data that read the odd column of the corresponding graph data of storing in the internal memory 56 earlier, jumping the data that read the even column of the corresponding graph data of storing in the internal memory 56 again, to produce the SEG signal of corresponding interlaced scan mode.In addition, the driving of shared electrode driving circuit 62 is COM0, COM2, COM1, COM3 in proper order.So by finding out among the figure that the storing value of internal memory 56 still remains when switching to the COM2 sweep trace by the COM0 sweep trace " 1 ", so the output waveform of SEG0, SEG1, SEG2, SEG3 sweep trace still keeps noble potential; When switching to the COM1 sweep trace, because the storing value of internal memory 56 is served as reasons by the COM2 sweep trace " 1 " switch to " 0 ", so the output waveform of SEG0, SEG1, SEG2, SEG3 sweep trace switches to electronegative potential by noble potential; And when switching to the COM3 sweep trace by the COM1 sweep trace, because the storing value of internal memory 56 still remains " 0 ", so SEG0, SEG1, SEG2, the output waveform of SEG3 sweep trace still keeps electronegative potential, so show the waveform of SEG signal in the process of this four row pixel only switches once between high electronegative potential with interlaced scan mode, can between high electronegative potential, switch three times compared to waveform with progressive scanning mode SEG signal in the process that shows this four row pixel, so after changing the driving order of shared electrode driving circuit 62, under the prerequisite of the memory contents of same memory 56, can produce the waveform of different SEG signals, but can not influence the correctness of display panels 52 display frames, the current potential that continuous variation produced that can effectively reduce because of the SEG signal really continuously changes thus, and then reduces the power consumption of driving circuit 54.
In addition, be different from the foregoing description, the present invention also can drive display panels 52 with progressive scanning mode when input graphics data meets a special pattern, when not meeting this special pattern then with driven in interlaced scan mode display panels 52, for example classify 1 and follow continuous two when classifying 0 continuous horizontal stripe shape figure as, drive display panels 52 with progressive scanning mode when input graphics data meets continuous two.This moment, 64 of selecting arrangements were used for selecting driving circuit 54 to drive display panels 52 with progressive scanning mode when comparer 70 is differentiated numerical value that counters 68 are calculated greater than this given number.
See also Fig. 9, Fig. 9 is the process flow diagram of another embodiment of the present invention selection with interlaced scan mode or progressive scanning mode driving display panels 52, and method of the present invention comprises the following step:
Step 200: the microcontroller 58 of LCD 50 produces graph data.
Step 202: selecting arrangement 64 judges whether the graph data that microcontroller 58 is produced meets special pattern data, if execution in step 204; Execution in step 214 then if not.
Step 204: the graph data that the counter 68 calculating microcontrollers 58 of selecting arrangement 64 are produced meets the number of these special pattern data.
Step 206: whether the numerical value that the comparer 70 differentiation counters 68 of selecting arrangement 64 are calculated is greater than a given number, if execution in step 208; Execution in step 214 then if not.
Step 208: selecting arrangement 64 selects driving circuit 54 to drive display panels 52 with progressive scanning mode.
Step 210: control device 66 control Driver Circuit 54 drive display panels 52 with progressive scanning mode.
Step 212: display panels 52 shows the image frame that corresponds to this graph data with progressive scanning mode.
Step 214: selecting arrangement 64 selects driving circuit 54 with driven in interlaced scan mode display panels 52.
Step 216: control device 66 control Driver Circuit 54 are with driven in interlaced scan mode display panels 52.
Step 218: display panels 52 shows the image frame that corresponds to this graph data with interlaced scan mode.
Step 220: finish.
Be different from previous embodiment, selecting arrangement 64 can judge whether the graph data that microcontroller 58 is produced meets special pattern data, wherein, these special pattern data can be continuous horizontal stripe shape figures etc., for example meet continuous two and classify 1 and follow continuous two and classify 0 horizontal stripe shape figure as, meaning is the little figure of image change gap between previous column pixel and next column pixel, see also Figure 10, the corresponding diagram of continuous horizontal stripe shape graph data that Figure 10 is stored for internal memory 56 and display panels 52 shown continuous horizontal stripe shape image frames, the pairing voltage of SEG signal of section electrode drive circuit 60 generations is represented in " 0 " of being stored in the internal memory 56 or " 1 ", and then causes the bright demonstration of display panels 52.And when changing the storing value of internal memory 56, the waveform of SEG signal also can change thereupon, when the storing value of internal memory 56 when switching frequency is low between " 0 " and " 1 ", then represent the waveform change frequency of SEG signal lower, as shown in figure 10, the variation of internal memory 56 storing values is only between secondary series and the 3rd row, so show that with progressive scanning mode continuous horizontal stripe shape figure can be than showing the power saving of coming with interlaced scan mode, and when under progressive scanning mode, showing continuous horizontal stripe shape figure, the power consumption of driving circuit 54 can than situations such as showing horizontal stripe shape figure or checkerboard figure get off little.
When the graph data of selecting device 64 to judge that microcontroller 58 is produced does not meet these special pattern data, represent that then the power consumption of driving circuit 54 do not bring up to a certain specific degrees, so the time selecting arrangement 64 can select driving circuits 54 with driven in interlaced scan mode display panels 52, and export corresponding selection signal to control device 66, control device 66 just can control Driver Circuit 54 with driven in interlaced scan mode display panels 52, and display panels 52 just can show the image frame that correspond to this graph data with interlaced scan mode; But when the graph data of selecting device 64 to judge that microcontroller 58 is produced meets these special pattern data, the graph data that the counter 68 meeting accumulative total microcontrollers 58 of selecting arrangement 64 are produced meets the number of these special pattern data, when if the comparer 70 of selecting arrangement 64 is differentiated numerical value that counters 68 are calculated not greater than this given number, represent that then the power consumption of driving circuit 54 do not bring up to a certain specific degrees, so the time selecting arrangement 64 can select driving circuits 54 with driven in interlaced scan mode display panels 52, and export corresponding selection signal to control device 66, control device 66 just can control Driver Circuit 54 with driven in interlaced scan mode display panels 52, and display panels 52 just can show the image frame that correspond to this graph data with interlaced scan mode; But when if the comparer 70 of selecting arrangement 64 is differentiated numerical value that counters 68 are calculated greater than this given number, represent that then the power consumption of driving circuit 54 brought up to a certain specific degrees, so the time selecting arrangement 64 can select driving circuits 54 to drive display panels 52 with progressive scanning mode, and export corresponding selection signal to control device 66, control device 66 just can control Driver Circuit 54 drive display panels 52 with progressive scanning mode, and display panels 52 just can show the image frame correspond to this graph data with progressive scanning mode, thus just can with respect to interlaced scan mode comparatively the progressive scanning mode of power saving drive display panels 52.
For instance, see also Figure 11, the synoptic diagram of COM signal and SEG signal when Figure 11 drives display panels 52 and shows the continuous horizontal stripe shape figure of Figure 10 with progressive scanning mode for the present invention, owing to be to drive display panels 52, so the driving of shared electrode driving circuit 62 is COM0, COM1, COM2, COM3 in proper order with progressive scanning mode.By finding out among the figure that the storing value of internal memory 56 still remains when switching to the COM1 sweep trace by the COM0 sweep trace " 1 ", so the output waveform of SEG0, SEG1, SEG2, SEG3 sweep trace still keeps noble potential; When switching to the COM2 sweep trace, because the storing value of internal memory 56 is served as reasons by the COM1 sweep trace " 1 " switch to " 0 ", so the output waveform of SEG0, SEG1, SEG2, SEG3 sweep trace switches to electronegative potential by noble potential; And when switching to the COM3 sweep trace by the COM2 sweep trace, because the storing value of internal memory 56 still remains " 0 ", so SEG0, SEG1, SEG2, the output waveform of SEG3 sweep trace still keeps electronegative potential, so show the waveform of SEG signal in the process of this four row pixel only switches once between high electronegative potential with progressive scanning mode, can between high electronegative potential, switch three times compared to waveform with interlaced scan mode SEG signal in the process that shows this four row pixel, the current potential that continuous variation produced that can effectively reduce because of the SEG signal really continuously changes thus, and then reduces the power consumption of driving circuit 54.
Compared to existing Liquid Crystal Display And Method For Driving, the invention provides the mechanism of prejudging the graph data characteristic, and select to drive LCD with interlaced scan mode or progressive scanning mode according to the characteristic of this graph data, just can when detecting power consumption picture special under progressive scanning mode, start interlaced scan mode thus, or when detecting power consumption picture special under interlaced scan mode, start progressive scanning mode, continuously change with the current potential that continuous variation was produced that reduces because of the SEG signal, and then the power consumption of reduction driving circuit, and can be not influential to display quality yet.
The above only is preferred embodiment of the present invention, and all equalizations of being done according to the present patent application claim change and modify, and all should belong to the covering scope of patent of the present invention.
Claims (24)
1. can select the LCD with interlaced scan mode or progressive scanning mode driving for one kind, it includes:
One display panels;
One drive circuit is coupled in this display panels, is used for driving this display panels;
One internal memory is coupled in this driving circuit;
One microcontroller is used for the output pattern data to this internal memory;
One selecting arrangement, the graph data that is used for exporting according to this microcontroller is by selecting this driving circuit to drive the pattern of this display panels in interlaced scan mode and the progressive scanning mode; And
One control device is used for controlling this driving circuit according to the selected pattern of this selecting arrangement and drives this display panels with interlaced scan mode or progressive scanning mode.
2. LCD as claimed in claim 1, wherein, this driving circuit includes:
One section electrode drive circuit is coupled in this internal memory; And
One shares electrode drive circuit, is coupled in this selecting arrangement.
3. LCD as claimed in claim 1, wherein, this internal memory is a static random access memory.
4. LCD as claimed in claim 1, wherein, this selecting arrangement includes:
One counter is used for when the graph data that this microcontroller is exported accords with special pattern data, calculates this selecting arrangement and receives the number that graph data that this microcontroller exports meets these special pattern data; And
Whether one comparer is used for differentiating numerical value that this counter calculates greater than a given number;
Wherein, this selecting arrangement is to be used for selecting this driving circuit with this display panels of driven in interlaced scan mode when this comparer is differentiated numerical value that this counter calculates greater than this given number.
5. LCD as claimed in claim 4, wherein, these special pattern data are staggered horizontal stripe shape figures.
6. LCD as claimed in claim 4, wherein, these special pattern data are checkerboard figures.
7. LCD as claimed in claim 1, wherein, this selecting arrangement includes:
One counter is used for when the graph data that this microcontroller is exported accords with special pattern data, calculates this selecting arrangement and receives the number that graph data that this microcontroller exports meets these special pattern data; And
Whether one comparer is used for differentiating numerical value that this counter calculates greater than a given number;
Wherein, this selecting arrangement is to be used for selecting this driving circuit to drive this display panels with progressive scanning mode when this comparer is differentiated numerical value that this counter calculates greater than this given number.
8. LCD as claimed in claim 7, wherein, these special pattern data are continuous horizontal stripe shape figures.
9. the liquid crystal driver that can select to drive a display panels with interlaced scan mode or progressive scanning mode, it includes:
One drive circuit is coupled in this display panels, is used for driving this display panels;
One internal memory is coupled in this driving circuit, is used for storing the graph data that a microcontroller is transmitted;
One selecting arrangement, the graph data that is used for exporting according to this microcontroller is by selecting this driving circuit to drive the pattern of this display panels in interlaced scan mode and the progressive scanning mode; And
One control device is used for controlling this driving circuit according to the selected pattern of this selecting arrangement and drives this display panels with interlaced scan mode or progressive scanning mode.
10. liquid crystal driver as claimed in claim 9, wherein, this driving circuit includes:
One section electrode drive circuit is coupled in this internal memory; And
One shares electrode drive circuit, is coupled in this selecting arrangement.
11. liquid crystal driver as claimed in claim 9, wherein, this internal memory is a static random access memory.
12. liquid crystal driver as claimed in claim 9, wherein, this selecting arrangement includes:
One counter is used for when the graph data that this microcontroller is exported accords with special pattern data, calculates this selecting arrangement and receives the number that graph data that this microcontroller exports meets these special pattern data; And
Whether one comparer is used for differentiating numerical value that this counter calculates greater than a given number;
Wherein, this selecting arrangement is to be used for selecting this driving circuit with this display panels of driven in interlaced scan mode when this comparer is differentiated numerical value that this counter calculates greater than this given number.
13. liquid crystal driver as claimed in claim 12, wherein, these special pattern data are horizontal stripe shape figures.
14. liquid crystal driver as claimed in claim 12, wherein, these special pattern data are checkerboard figures.
15. liquid crystal driver as claimed in claim 9, wherein, this selecting arrangement includes:
One counter is used for when the graph data that this microcontroller is exported accords with special pattern data, calculates this selecting arrangement and receives the number that graph data that this microcontroller exports meets these special pattern data; And
Whether one comparer is used for differentiating numerical value that this counter calculates greater than a given number;
Wherein, this selecting arrangement is to be used for selecting this driving circuit to drive this display panels with progressive scanning mode when this comparer is differentiated numerical value that this counter calculates greater than this given number.
16. liquid crystal driver as claimed in claim 15, wherein, these special pattern data are continuous horizontal stripe shape figures.
17. a selection drives the method for a LCD with interlaced scan mode or progressive scanning mode, it comprises the following step:
(a) microcontroller of this LCD produces graph data;
(b) whether the graph data of judging this microcontroller and being produced meets special pattern data;
(c) according to the judged result of step (b) pattern by a display panels of selecting to drive this LCD in interlaced scan mode and the progressive scanning mode; And
(d) drive this display panels of this LCD with interlaced scan mode or progressive scanning mode according to the selection result of step (c).
18. method as claimed in claim 17, wherein, step (c) comprises when the judgement graph data that this microcontroller produced accords with these special pattern data, by the pattern of a display panels of selecting this LCD of driving in interlaced scan mode and the progressive scanning mode.
19. method as claimed in claim 18, wherein, step (c) comprises in addition:
(c1) graph data that calculates this microcontroller and produced meets the number of these special pattern data;
(c2) whether the numerical value that calculated of discriminating step (c1) is greater than a given number;
(c3) according to the differentiation result of step (c2) pattern by a display panels of selecting to drive this LCD in interlaced scan mode and the progressive scanning mode.
20. method as claimed in claim 19 wherein, when step (c3) comprises the numerical value that calculated when discriminating step (c2) greater than this given number, is selected this display panels with this LCD of driven in interlaced scan mode.
21. method as claimed in claim 19 wherein, when step (c3) comprises the numerical value that calculated when discriminating step (c2) greater than this given number, selects to drive with progressive scanning mode this display panels of this LCD.
22. method as claimed in claim 20, wherein, these special pattern data are horizontal stripe shape figures.
23. method as claimed in claim 20, wherein, these special pattern data are checkerboard figures.
24. method as claimed in claim 21, wherein, these special pattern data are continuous horizontal stripe shape figures.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100740374A CN100520897C (en) | 2006-04-04 | 2006-04-04 | Liquid crystal display capable of selecting interlaced scanning or line by line scanning driving and driving method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100740374A CN100520897C (en) | 2006-04-04 | 2006-04-04 | Liquid crystal display capable of selecting interlaced scanning or line by line scanning driving and driving method |
Publications (2)
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| CN100520897C true CN100520897C (en) | 2009-07-29 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101673517B (en) * | 2008-09-10 | 2013-03-27 | 联合聚晶股份有限公司 | Display driving device and display driving method |
| CN103218978A (en) * | 2012-01-18 | 2013-07-24 | 联咏科技股份有限公司 | Display driving device and driving method of display panel |
| CN102968971B (en) * | 2012-11-08 | 2015-01-28 | 京东方科技集团股份有限公司 | Liquid crystal display driving method, time sequence control device and liquid crystal display device |
| CN104700809A (en) * | 2013-06-06 | 2015-06-10 | 青岛海信电器股份有限公司 | Display device, time sequence controller and image display method |
| CN104505011B (en) * | 2014-12-17 | 2017-02-22 | 深圳市华星光电技术有限公司 | Detection circuit of display panel and use method thereof |
| CN106611579A (en) | 2015-10-22 | 2017-05-03 | 小米科技有限责任公司 | A content display method and apparatus |
| CN111369934B (en) * | 2020-04-09 | 2021-04-02 | 深圳市华星光电半导体显示技术有限公司 | Display device and terminal |
| WO2023065143A1 (en) * | 2021-10-20 | 2023-04-27 | 京东方科技集团股份有限公司 | Driving method for display panel, and display device |
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