CN101604500B - Burning method of display driver, display driver and display using it - Google Patents
Burning method of display driver, display driver and display using it Download PDFInfo
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Abstract
The invention relates to a burning method of a display driver, the display driver using the same and a display. The burning method comprises the following steps: providing burning data; providing a display buffer in the display driver, wherein the display buffer is used for pre-storing a display data in a display period; providing a non-volatile memory, wherein the non-volatile memory is coupled with the display buffer through a data bus; performing a burning procedure, wherein the burning procedure comprises the following actions: inputting burning data into a display buffer; and burning the burning data from the display buffer to the nonvolatile memory through the data bus. The spirit of the present invention lies in that the display buffer built in the display driving circuit is used to replace the temporary storage for burning the programmable storage unit, so that the function of the display driving circuit will not be affected and the advantage of reducing the area can be achieved.
Description
Technical field
The invention relates to the technology that a kind of display is relevant, and particularly relevant for a kind of method for burn-recording and a kind of display driver that uses it of display driver.
Background technology
Along with the progress of science and technology, electronic technology by the earliest vacuum tube, transistor, proceeds to integrated circuit (IC) chip.Its purposes very extensively, also therefore, electronic product also gradually become indispensable daily necessities in modern's life.At the same time, the development relation of electronic technology and display is then more and more closer, flat-panel screens has become necessity indispensable in the daily life at present, for example in the application of large-sized LCD, comprising: LCD TV, Panel PC display; In the application of the LCD of small-medium size, comprising: mobile phone, personal digital assistant, digital music walkman or the like even.
LCD is the built-in at least one circuit of display driving of meeting usually; wherein; in the driving circuit of the LCD of small-medium size; usually in order to meet various panel characteristics or the changeability of how built-in parameter to be provided; it usually all can be at programmable memory cell of driving circuit IC interior organizational system; this programmable memory cell generally is to implement with non-volatility memorizer, for example flash memory (flashmemory), can eliminate program read-only memory (EPROM), disposable programmable memory (OTP) or the like.In the environment of more and more polynary change, also just produce increasing demand gradually at the driving circuit of the present LCD of small-medium size for the employed amount of programmable memory cell.
Fig. 1 is used for the firmware burning circuit diagram of Thin Film Transistor-LCD driving circuit in the prior art.Please refer to Fig. 1, this circuit comprises that N position working storage 101, firmware burning control module 102, N position demoder 103, non-volatility memorizer 104 and read working storage 105.Wherein, comprise the sub-working storage R101 of a plurality of M position in the N position working storage 101, and N position demoder 103 couples non-volatility memorizer 104 by a M position bus-bar.
In the burning process, when the data that will write the N position entered non-volatility memorizer 104, the data that will write were earlier all write in the N position working storage 101 earlier.Afterwards, firmware burning control module 102 can be controlled N position demoder 103, selects the data of wanting burning and be burned onto in regular turn in the N position non-volatility memorizer 104 from N position working storage 101.In this driving circuit running, firmware is just read out by reading working storage 105 by non-volatility memorizer 104.
Yet, such framework, in display driver circuit, need provide one with the identical N position working storages 101 of non-volatility memorizer 104 size, to store the data that will be burnt to non-volatility memorizer 104.Therefore, the data that burn non-volatility memorizer 104 when needs are many more, and when just the figure place of non-volatility memorizer 104 was big more, the required working storage that provides 101 was just big more.And these working storages 101 can only be used in the burning firmware, can not be shared with other function, therefore, wasted the layout area of many integrated circuit.In addition,, need the figure place of the data bus-bar of cooperation non-volatility memorizer 104, provide a N position demoder 103 (the N position is to the M position), correctly to select the data of wanting burning for the burning firmware.This N position demoder 103 is at also suitable considerable of the shared area of the layout of integrated circuit.
Summary of the invention
In view of this, a purpose of the present invention is exactly to be to provide a kind of, the method for burn-recording of display driver, the display driver that uses it and flat-panel screens, can save a large amount of integrated circuit layout areas.When the employed amount of programmable memory cell is big more, use the advantage of this organizational system mode will be obvious more, that is to say that the area of being saved will be more.
For reaching above-mentioned or other purposes, the present invention proposes a kind of method for burn-recording of display driver.This method for burn-recording comprises: a burning data is provided; In display driver, a display buffer is provided, wherein this display buffer is in order to during a demonstration, and a video data prestores; One non-volatility memorizer is provided, and wherein this non-volatility memorizer couples display buffer by a data bus-bar; Carry out a burning program, wherein this burning program comprises following action: burning data is input to display buffer; And, burning data is burnt to non-volatility memorizer from display buffer by the data bus-bar.
The present invention proposes a kind of flat-panel screens in addition, and this flat-panel screens comprises a display panel and display driver of the present invention.This display driver comprises an input interface, a non-volatility memorizer, a display buffer, a control logic circuit and one drive circuit.Display buffer couples input interface, and couples non-volatility memorizer by a data bus-bar, in order to during a demonstration, and one video data of access in advance.Control logic circuit couples input interface, non-volatility memorizer and display buffer.Driving circuit couples non-volatility memorizer, control logic circuit, display buffer and display panel.When display buffer was not used, control logic circuit was input to display buffer by input interface with a burning data, and by the data bus-bar, burning data was burnt to non-volatility memorizer from display buffer.Driving circuit is according to burning data, and the display timing generator or the interface setting of control video data are to drive display panel.
According to described flat-panel screens of preferred embodiment of the present invention and display driver, above-mentioned driving circuit comprises an output driving circuit, time schedule controller and a function working storage.Output driving circuit couples display buffer, in order to receive video data in regular turn, to drive a display panel.Time schedule controller couples control circuit and output driving circuit, receives the sequential of video data in order to the control output driving circuit.The function working storage couples control circuit and time schedule controller, gives time schedule controller in order to be written into burning data.In one embodiment, non-volatility memorizer can be by flash memory, can eliminate program read-only memory and disposable programmable memory and implement.In one embodiment, display panel can be implemented by display panels, organic LED display panel and carbon nano-tube field emission display.
Method for burn-recording according to the described display driver of preferred embodiment of the present invention, the above-mentioned step that burning data is input to display buffer comprises: in display buffer, one designated blocks is set, and wherein the address of this designated blocks (address) configuration and size are identical with non-volatility memorizer; And, burning data is stored to this display buffer according to the position that should be disposed at non-volatility memorizer.
Spirit of the present invention is to be to use in the circuit of display driving built-in display buffer originally to replace and be used for the working storage of organizational system burning programmable memory cell, such mode like this, except not influencing this function that has of display driver circuit originally, can also reach the advantage that reduces area.
Description of drawings
Fig. 1 is used for the firmware burning circuit diagram of Thin Film Transistor-LCD driving circuit in the prior art.
Fig. 2 is the circuit block diagram of the flat-panel screens that illustrates according to the embodiment of the invention.
Fig. 3 is the circuit block diagram of the display driver that illustrates according to the embodiment of the invention.
Fig. 4 is the non-volatility memorizer 302 that illustrates according to the embodiment of the invention and the memory inside arrangement plan of display buffer 303.
Fig. 5 is the circuit block diagram of the display driver 202 that illustrates according to the embodiment of the invention.
Fig. 6 is the process flow diagram of the method for burn-recording of the display driver that illustrates according to the embodiment of the invention.
Fig. 7 is the further process flow diagram of step S604～S605 of the method for burn-recording of the display driver that illustrates according to the embodiment of the invention.
Drawing reference numeral:
101:N position working storage
102: the firmware burning control module
103:N position demoder
104: non-volatility memorizer
105: read working storage
R101: sub-working storage
201: display panel
202: display driver
301: input interface
302: non-volatility memorizer
303: display buffer
304: control logic circuit
305: driving circuit
501: storage unit
502: the function working storage
503: output driving circuit
504: time schedule controller
S601～S605: the step of the embodiment of the invention
S701～S703: the further process flow diagram of the step S604 of the embodiment of the invention～S605
Embodiment
For above-mentioned and other purposes, feature and advantage of the present invention can be become apparent, preferred embodiment cited below particularly, and cooperate appended graphicly, be described in detail below.
Fig. 2 is the circuit block diagram of the flat-panel screens that illustrates according to the embodiment of the invention.Please refer to Fig. 2, this circuit comprises a display panel 201 and the display driver 202 in order to drive this display panel.Fig. 3 is the circuit block diagram of the display driver 202 that illustrates according to the embodiment of the invention.Please refer to Fig. 3, this display driver 202 comprises an input interface 301, a non-volatility memorizer 302, a display buffer 303, a control logic circuit 304 and one drive circuit 305.The relation of coupling as the figure of this circuit illustrate.
The present invention for convenience of description suppose that at first above-mentioned display panel 201 is display panels, and hypothesis display driver 202 is a time schedule controller.In general, when operating at ordinary times, image can input to display buffer 303 from input interface.And driving circuit 305 can read out firmware from non-volatility memorizer 302, and according to this firmware, controls the data presentation sequential of display buffer 303, and controls display panels 201 according to this.
When this flat-panel screens during still in the development phase, for the stability of product, the firmware in display driver 202 inside usually needs to upgrade, and need carry out the action of burning to non-volatility memorizer 302.And when upgrading firmware, be failure to actuate at the display buffer 303 of display driver 202 inside.Therefore, in this embodiment, the data that will want burning according to the address of planning in advance, deposit in the display buffer 303 by input interface 301 earlier when the instruction issuing of burning.Afterwards, again by control logic circuit 304 control exist in the display buffer 303 desire the data of burning, according to data being burnt in non-volatility memorizer 302 by pen of its address with the desire burning.
By the foregoing description, this area has knows that usually the knowledgeable as can be seen, the mode of this burning do not need as described in the prior art extra N position working storage 101 store in advance desire the data of burning, but use the display buffer 303 temporary data of desiring burning, so, extra N position working storage 101 need not use.Along with development in science and technology, the function that the user requires is more and more, will cause in the figure place of the non-volatility memorizer 302 of display driver 202 increasing.When the figure place of non-volatility memorizer 302 is big more, the integrated circuit layout area that utilizes the present invention to save will be many more.In addition, because shared storer is display buffer 303, the major function of this display buffer 303 is to be used in the image data that prestores, therefore, the figure place of display buffer 303 in general, much larger than the figure place of non-volatility memorizer 302.
In the foregoing description, though replace the data that working storage 101 originally stores burning in advance with display buffer 303, but, if do not perform the planning of the address that is written to display buffer 303, although the use that in this is used, can save working storage 101, but inevitably, still need use the part that a large amount of areas is built in N position demoder 103.But, if, just can save the area of this selector switch through after the suitable address planning.Below just for an embodiment with in the how suitable planning display buffer 303 of explanation, the address that burning data is stored.
Fig. 4 is the non-volatility memorizer 302 that illustrates according to the embodiment of the invention and the memory inside arrangement plan of display buffer 303.Please refer to Fig. 4, in this embodiment, non-volatility memorizer 302 is divided into four and stores block S (0)～S (3), in the display buffer 303, distributed 4 column address R (0)～R (3), in order to want burning corresponding at storage block S (the 0)～S (3) of non-volatility memorizer 302 with predetermined.The further effect of being brought for this embodiment of simple declaration, at this hypothesis display buffer 303 is static RAM, its inputoutput data bus-bar is 8 a width, in addition, the non-volatility memorizer 302 input bus-bars of supposing present embodiment again are 8 width, and its output bus-bar has 64 width.In addition, in this embodiment, non-volatility memorizer 302 has four and stores block S (0)～S (3), because its output bus-bar has 64 width, so each storage block S (0)～S (3) has 64 * 8 storage capacity.
As can be seen from the above-described embodiment, be divided out four blocks equally, just 4 row R (0)～R (3) (Row0～Row3) at static RAM 303.Before burning non-volatility memorizer 302, data can be written to four of static RAM 303 row R (0)～R (3) earlier and (among the Row0～Row3), that is to say in four row R (0)～R (3) of static RAM 303 and write 8 * 64=512 position respectively.When being written to after four pre-configured row R (0)～R (3) of static RAM 303 of data integrity, control logic circuit 304 will begin to carry out the action of burning non-volatility memorizer 302.At this moment, control logic circuit 304 will be sent same address to static RAM 303 and non-volatility memorizer 302 simultaneously.For instance, following table one is the address configuration table of non-volatility memorizer 302, and second following table is the address configuration table of static RAM 303.
| |
|
|
|
Data 4 | Data 5 | Data 6 | Data 7 | |
| 000 | 001 | 010 | 011 | 100 | 101 | 110 | 111 | |
| 000000 | α | β | γ | … | … | … | … | … |
| 000001 | … | … | … | … | … | … | … | … |
| 000010 | … | … | … | … | … | … | … | … |
| 000011 | … | … | … | … | … | … | δ | … |
| 000100 | … | … | … | … | … | … | … | … |
| 000101 | … | … | … | … | … | … | … | … |
| 000110 | … | … | … | … | … | … | … | … |
| 000111 | … | … | … | … | … | … | … | ε |
Table one
| Row address 0000000 | Row address 0000001 | Row address 0000010 | … | … | Row address 0011110 | … | Row address 0111111 | |
| Column address 00 | ?α | ?β | ?γ | … | … | ?δ | … | ?ε |
Table two
Wherein, above-mentioned table one is only represented the address configuration of the S of first (0) of non-volatility memorizer 302, and above-mentioned table two is only represented the address configuration of the column address R (0) of static RAM 303.The size of non-volatility memorizer 302 is 2048 a size, and it is 8 and 64 that the frequency range size of input bus-bar and output bus-bar is respectively.Non-volatility memorizer 302 is divided into four and stores block, and first address that stores block S (0) is that 000000～000111, second address that stores block S (1) is that 001000～001111, the 3rd address that stores block S (2) is that 010000～010111, the 4th address that stores block S (3) is 011000～011111.The address of static RAM 303 is in order to cooperate the storing mode of non-volatility memorizer 302, therefore just as shown in Table 2.Be listed as R (0)～R (4) by four of planning in the static RAM 303, respectively in order to store the data of four parts that will be burnt to non-volatility memorizer 302, wherein, its every row use 64 * 8 and come deposit data, that is to say 64 8 data are arranged in the column address 0 of static RAM 303, therefore the addresses of static RAM 303 row have only 000000 (0) to 111111 (63) just to be made by us and be used for storage data, and remaining address is not used.
After the data of desire burning are stored into static RAM 303 according to the address of being planned, just can begin to carry out burning program.At this moment, control logic circuit 304 can begin static RAM 303 and non-volatility memorizer 302 are sent the address that will be burnt to the data of non-volatility memorizer 302 by static RAM 303 in regular turn.For example, control logic circuit 304 is sent address 000000001 and is given static RAM 303 and non-volatility memorizer 302, wherein, can go to read the data of wanting burning by column address 0 (00) and row address 1 (0000001) for static RAM 303, write in non-volatility memorizer 302 column addresss 000000, the row address 001 the first stroke data β (data 1) of these row; Same reason, if want the address of data in static RAM 303 of burning is column address 0 (00), row address 52 (0011110), then these data will be write in the column address 000011, row address 110 of non-volatility memorizer 302, the 6th data δ (data 6) that just should row.
Because therefore above-mentioned address configuration, just can not need to dispose any demoder between non-volatility memorizer 302 and static RAM 303, only need its data bus-bar is coupled the action that just can carry out burning.
Fig. 5 is the circuit block diagram of the display driver 202 that illustrates according to the embodiment of the invention.Please refer to Fig. 5, in this embodiment, non-volatility memorizer 302 inside have also comprised a function working storage 502 except storage unit 501, give control circuit and this time schedule controller in order to the data that are written into storage unit 501 burnings.In addition, driving circuit 305 has comprised an output driving circuit 503 and time schedule controller 504.Output driving circuit 503 drives display panel according to this in order to receive the video data that is stored in advance in the display buffer 303 in regular turn.Time schedule controller 504 receives the sequential of video data in order to control output driving circuit 503.Its running is identical with the ultimate principle of above-mentioned Fig. 2～Fig. 4, so do not repeat them here.
Though in the foregoing description, only give an example, it will be appreciated by those skilled in the art that display panels, organic LED display panel and carbon nano-tube field emission display panel all can be used as a kind of embodiment of the present invention with display panels.So the present invention is not as limit.In addition, though in the foregoing description, non-volatility memorizer is not done any giving an example, but those skilled in the art should know, flash memory, can eliminate the non-volatility memorizer that program read-only memory and disposable programmable memory all can be used as the embodiment of the invention, and by any non-volatility memorizer that both are formed of its three or can be in order to implement the present invention by the non-volatility memorizer that above-mentioned three formed.So the present invention is not as limit.
By above-mentioned several embodiment, the present invention can be reduced a kind of method for burn-recording of display driver.Fig. 6 is the process flow diagram of the method for burn-recording of the display driver that illustrates according to the embodiment of the invention.Please refer to Fig. 6, the method comprises the following steps:
Step S601 a: burning data is provided.
Step S602: in display driver, provide a display buffer, wherein display buffer in order to one show during, one video data of access in advance.
Step S603: a non-volatility memorizer is provided, and wherein non-volatility memorizer couples display buffer by a data bus-bar.
Step S604: burning data is input to display buffer.
Step S605:, burning data is burnt to non-volatility memorizer from display buffer by the data bus-bar.
In embodiment further, above-mentioned step S604 can comprise the step of Fig. 7.Please refer to Fig. 7, step S604 comprises:
Step S701: in display buffer, a designated blocks is set, wherein, the address configuration of above-mentioned designated blocks and size are identical with non-volatility memorizer.As shown in Figure 4, the configuration of the memory inside of non-volatility memorizer 302 and display buffer 303 is identical with size.
Step S702: should be disposed at the position of non-volatility memorizer according to burning data, burning data is stored to display buffer.
Then step S605 can make following steps into:
Step S703: the address that above-mentioned burning data is provided in regular turn makes burning data stored in the display buffer write non-volatility memorizer to display buffer and non-volatility memorizer.
In sum, spirit of the present invention is to be to use in the circuit of display driving built-in display buffer originally to replace and be used for the working storage of organizational system burning programmable memory cell, such mode like this, except not influencing this function that has of display driver circuit originally, can also reach the advantage that reduces area.
In addition, in an embodiment of the present invention, also proposed a kind of planning mode of address, this mode can further go to reduce the use amount of the layout area of integrated circuit.Therefore, can further allow the present invention reach better effect, more reduce production cost.
The specific embodiment that is proposed in the detailed description of preferred embodiment is only in order to convenient explanation technology contents of the present invention, but not with narrow sense of the present invention be limited to the foregoing description, in the situation that does not exceed spirit of the present invention and claim, the many variations of being done is implemented, and all belongs to scope of the present invention.Therefore protection scope of the present invention is when being as the criterion that the right requirement is defined.
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| CN101944317A (en) * | 2010-04-30 | 2011-01-12 | 苏州佳世达电通有限公司 | Display control device for updating time schedule controller, and display equipment and method |
| TWI529687B (en) | 2010-06-14 | 2016-04-11 | 聯詠科技股份有限公司 | Driver ic, panel driving system and panel driving method |
| CN102298912B (en) * | 2010-06-24 | 2014-10-08 | 联咏科技股份有限公司 | Driving chip, panel driving system and panel driving method |
| CN103400551B (en) * | 2013-08-19 | 2016-12-28 | 西安诺瓦电子科技有限公司 | LED display controller and LED display screen system |
| CN104318949B (en) | 2014-11-20 | 2017-06-16 | 京东方科技集团股份有限公司 | A kind of burning device, programming system and method for burn-recording |
| CN104658463A (en) * | 2015-03-09 | 2015-05-27 | 合肥京东方光电科技有限公司 | Setting method and setting system for display panel |
| CN106227690B (en) * | 2016-03-11 | 2020-12-15 | 华为技术有限公司 | File processing method and display device |
| CN105974618B (en) * | 2016-06-08 | 2019-11-29 | 捷星显示科技（福建）有限公司 | A kind of method for burn-recording of liquid crystal display electricity consumption data |
| CN105976779B (en) * | 2016-07-01 | 2019-02-12 | 深圳市华星光电技术有限公司 | Sequence controller and its data-updating method, liquid crystal display panel |
| CN108459862B (en) * | 2018-05-16 | 2022-02-15 | 昆山龙腾光电股份有限公司 | Code burning method and liquid crystal display module |
| CN109584820B (en) * | 2018-12-19 | 2021-10-01 | 惠科股份有限公司 | Time sequence control board, display device and testing device |
| CN109947160B (en) * | 2019-04-10 | 2021-07-06 | 苏州浪潮智能科技有限公司 | An output adjustment method and device of a voltage regulator |
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