CN104616613B - Source electrode driver and its driving method - Google Patents

Source electrode driver and its driving method Download PDF

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Publication number
CN104616613B
CN104616613B CN201310537825.2A CN201310537825A CN104616613B CN 104616613 B CN104616613 B CN 104616613B CN 201310537825 A CN201310537825 A CN 201310537825A CN 104616613 B CN104616613 B CN 104616613B
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display data
data
source electrode
voltage level
multiple display
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CN104616613A (en
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蔡岳勋
刘益全
刘岳修
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Novatek Microelectronics Corp
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Novatek Microelectronics Corp
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Abstract

The invention discloses the source electrode drivers and its driving method for a display device, include a receiving module and receive multiple display datas;Multiple transmission channels include a temporary storage module respectively, receive one in the multiple display data;One voltage position rank converter judges a voltage level of one in the multiple display data;And a polarity digital analog converter, a number is carried out to the voltage level of one in the multiple display data and turns simulated operation;And the multiple voltage level that the number turns the multiple display data of simulated operation has been completed in an output module, output;Wherein, the multiple display data of output corresponding to adjacent the two includes the voltage level of dissimilar polarities in the multiple transmission channel, and the output module also carries out an odd-times swap operation before the multiple voltage level is exported.

Description

Source electrode driver and its driving method
Technical field
The present invention relates to a kind of source electrode driver and its driving method more particularly to a kind of utilization image operation and odd-times Data exchange, to switch on the source electrode driver and its driving method of two kinds of operating modes.
Background technology
With the progress of display technology, in order to pursue the lightening of higher resolution ratio and hardware unit, it is known that display Neighboring transmission channel in equipment corresponding to multiple source electrode drivers will be designed by adaptive, believe the transmission of number odd number and even number A digital analog converter is shared in road, and through the operation of even-times data exchange, completes the source drive for display device The driving method of device.Specifically, it is known that the source electrode driver of technology operates in two kinds of operating modes, please refers to Fig.1 A, Figure 1B And Fig. 2A, Fig. 2 B, Figure 1A and Figure 1B are known technology correlation of the middle one source driver 10 for one first operating mode Schematic diagram, wherein, Figure 1A is received by source electrode driver 10 from a clock generator(Do not show in figure)A display data The schematic diagram of INDA_1, and Figure 1B is the schematic diagram that source electrode driver 10 exports display data INDA_1 in Figure 1A;Fig. 2A and Fig. 2 B are known technology schematic diagram of the middle one source driver 10 for one second operating mode, wherein, Fig. 2A is source drive Device 10 is received from a clock generator(Do not show in figure)A display data INDA_2 schematic diagram, and Fig. 2 B be source electrode drive Dynamic device 10 exports the schematic diagram of display data INDA_2 in Fig. 2A.
As shown in Figure 1A, the display data INDA_1 that source electrode driver 10 is received is a sequence type data and includes aobvious Registration according to DATA (A), DATA (B) ..., DATA (X), DATA (Y).As shown in Figure 1B, source electrode driver 10 includes a displacement Register 100 receives display data INDA_1, in addition, source electrode driver 10 also includes transmission channel CH [n], CH [n+ 1] ..., CH [m-1], CH [m], and each transmission channel CH [X] then includes a buffer 102_X, a voltage position rank converter 104_X, a positive polarity(Or negative polarity)A digital analog converter 106_X and operational amplifier 108_X, and buffer 102_ X also includes one first buffer memory unit 102_1_X and one second buffer memory unit 102_2_X respectively.Furthermore shown in Fig. 2A Display data INDA_2 will be identical with the display data INDA_1 shown in Figure 1A, as the source electrode driver 20 shown in Fig. 2 B with Source electrode driver 10 shown in Figure 1B is substantially similar, only the first buffer memory unit 102_1_X and second of neighboring transmission channel Connection mode between buffer memory unit 102_2_X is different, makes display data INDA_1, INDA_2 via source electrode driver 10,20 Transmission channel CH [n], CH [n+1] ..., the display subdata of two kinds of polarity of the corresponding output of CH [m-1], CH [m] will be It is different.
As shown in Figure 1A, Figure 1B, when source electrode driver 10 is operated in the first operating mode, shift register 100 receives After display data INDA_1, by sequentially directly in display data INDA_1 DATA (A), DATA (B) ..., DATA (X), DATA (Y) be transmitted to transmission channel CH [n], CH [n+1] ..., CH [m-1], CH [m], and sequentially by buffer 102_X, electricity Press position rank converter 104_X, positive polarity(Or negative polarity)The behaviour of digital analog converter 106_X and operational amplifier 108_X Make, with the display subdata of corresponding output polarity comprising there are two types of, wherein, the first is the voltage level such as V of positive polarity (A), V (C) ... V (X) and respectively it is corresponding be transmitted to transmission channel CH [n], CH [n+2] ..., CH [m-1], second is negative polarity Voltage level such as-V (B) ,-V (D) ...-V (Y) and be transmitted separately to transmission channel CH [n+1], CH [n+3] ..., CH [m].
In addition, as shown in Fig. 2A, Fig. 2 B, when source electrode driver 20 is operated in the second operating mode, shift LD After device 100 receives display data INDA_1, by sequentially in display data INDA_1 DATA (A), DATA (B) ..., DATA (X), DATA (Y) be transmitted to transmission channel CH [n], CH [n+1] ..., CH [m-1], CH [m].Different from source electrode driver 10 Mode of operation, neighboring transmission channel CH [X], first buffer memory unit 102_1_X, 102_ of CH [X+1] in source electrode driver 20 1_X+1 and second buffer memory unit 102_2_X, 102_2_X+1 will be coupled to second by the first buffer memory unit 102_1_X Buffer memory unit 102_2_X+1, and the first buffer memory unit 102_1_X+1 is coupled to the second buffer memory unit 102_2_X+1(I.e. Neighboring transmission interchannel first carries out the swap operation of a display data), then the voltage position rank by the second buffer memory unit rear end Converter 104_X and positive polarity(Or negative polarity)Digital analog converter 106_X etc. carries out relevant operation, finally just in entrance The swap operation of an other display data is carried out before operational amplifier 108_X, with corresponding output comprising there are two types of the aobvious of polarity Registration evidence.Accordingly, different from the voltage level of source electrode driver 10, source electrode driver 20 exported the first for negative polarity Voltage level such as-V (A) ,-V (C) ...-V (X), and respectively it is corresponding be transmitted to transmission channel CH [n], CH [n+2] ..., CH [m- 1], it is voltage level such as V (B), V (D) ... the V (Y) of positive polarity second, and is transmitted separately to transmission channel CH [n+1], CH [n+3]、…、CH[m]。
In the case, as shown in Figure 1A and Fig. 2A, though source electrode driver 10,20 receives identical display data, warp By sharing positive polarity(Or negative polarity)Digital analog converter, the voltage level of the corresponding output of the two is really just on the contrary, i.e. source Multiple voltage levels that transmission channel CH [n]~CH [m] is exported in driver 10 are sequentially V (A) ,-V (B), V (C) ,-V (D) ... V (X) ,-V (Y), and multiple voltage levels that transmission channel CH [n]~CH [m] is exported in source electrode driver 20 are sequentially It for-V (A), V (B) ,-V (C), V (D) ...-V (X), V (Y), only operates under different working modes, source electrode driver 10,20 needs Using twice(Or even-times)The swap operation of display data is shown with opposed polarity of the corresponding output between different transmission channels Registration evidence.It is thus known that the operation of the source electrode driver 10,20 of technology, after multiple display datas have been received, it is necessary to preferential Judge in which kind of operating mode, and then switch the connection relation of the multiple buffer memory units of neighboring transmission interchannel, display is caused to set Standby global design lacks flexibility.Therefore it provides it is another can elasticity for the source electrode driver of display device driving method, The important topic of this field is become.
The content of the invention
Therefore, the main object of the present invention is to be to provide a kind of to utilize image operation and the operation of odd-times data exchange Mode, to switch on the source electrode driver and its driving method of two kinds of operating modes.
The present invention discloses a kind of source electrode driver for being used for a display device, and the source electrode driver switches on two kinds of work Pattern, and include a receiving module, for receiving multiple display datas;Multiple transmission channels, wherein each transmission channel bag Containing a temporary storage module, the receiving module is coupled to, for receiving one in the multiple display data;One voltage position rank turns Parallel operation is coupled to the temporary storage module, for judging a voltage level of one in the multiple display data;An and polarity Digital analog converter is coupled to the temporary storage module, for the voltage level to one in the multiple display data It carries out a number and turns simulated operation;And an output module, it is coupled to multiple polarity digital simulations of the multiple transmission channel Converter, for exporting the multiple voltage level for having completed the multiple display data that the number turns simulated operation; Wherein, the multiple display data of output includes the electricity of dissimilar polarities corresponding to adjacent the two in the multiple transmission channel Voltage level, and the output module also carries out an odd-times swap operation before the multiple voltage level is exported.
The present invention discloses the driving method of another one source driver for a display device, the source electrode driver Two kinds of operating modes are switched on, the driving method, which includes, receives multiple display datas, and judges the multiple display data Multiple voltage levels;In multiple transmission channels, a number is carried out to the multiple voltage level of the multiple display data Word turns simulated operation;And as an output module of the source electrode driver to having completed described in the number turns simulated operation Multiple display datas carry out an odd-times swap operation, and then export the multiple voltage level;Wherein, the multiple transmission letter The multiple display data of the corresponding output of adjacent the two includes the voltage level of dissimilar polarities in road.
Description of the drawings
Figure 1A is known technology the signal that middle one source driver receives the display data from a clock generator Figure.
Figure 1B is known technology the schematic diagram that middle one source driver exports the display data of Figure 1A.
Fig. 2A in being known technology another source electrode driver receive showing for the display data from a clock generator It is intended to.
Fig. 2 B are known technology the schematic diagram that middle one source driver exports the display data of Fig. 2A.
Fig. 3 A be image of the embodiment of the present invention after a display data schematic diagram.
Fig. 3 B are received the schematic diagram of display data in Fig. 3 A by one source driver of the embodiment of the present invention.
The schematic diagram for the display data that Fig. 4 A are received by the embodiment of the present invention.
Fig. 4 B are received the schematic diagram of display data in Fig. 4 A by one source driver of the embodiment of the present invention.
Fig. 5 A are the schematic diagram of the display data that decoder exports image using some inverted rules in Fig. 4 B.
Fig. 5 B are the schematic diagram of the display data that decoder exports image using a column inverted rules in Fig. 4 B.
Fig. 5 C are that decoder utilizes the schematic diagram for the display data for adding two wires inverted rules output image one by one in Fig. 4 B.
The schematic diagram for the display data that Fig. 6 is received by decoder in Fig. 4 B.
The schematic diagram for another display data that Fig. 7 is received by decoder in Fig. 4 B.
Fig. 8 is the flow chart that the embodiment of the present invention one drives flow.
Wherein, the reference numerals are as follows:
10th, 20,30 source electrode driver
102_1~102_n buffers
104_X voltages position rank converter
The buffer memory unit of 102_1_1~102_1_n, 302_1_1~first
302_1_n
The buffer memory unit of 102_2_1~102_2_n, 302_2_1~second
302_2_n
104_1~104_n, 304_1~304_n voltages position rank converter
106_1~106_n, 306_1~306_n polarity digital analog converters
108_1~108_n operational amplifiers
100th, 300 shift register
302_1~302_n temporary storage modules
308 output modules
308_1~308_n operational amplifiers
400 decoders
INDA_1, INDA_2, INDA_3, display data
INDA_4、DATA(A)、DATA(B)、...、
DATA(X)、DATA(Y)
CH [n], CH [n+1] ..., CH [m-1], transmission channel
CH [m], CL [1]~CL [n]
V (A) ,-V (B), V (C) ,-V (D) ... V (X), voltage level
-V(Y)、-V(A)、V(B)、-V(C)、V(D)、…、
-V(X)、V(Y)
POL polarity control signals
YDIO frame start signals
LD data-signals
DSL1, DSL2, DSL3 detection signal
The first operating modes of Phase I
The second operating modes of Phase II
SP1, SP2 setting grouping
S0, S1 bit
80 driving flows
800th, 802,804,806,808 step
Specific embodiment
Some vocabulary has been used among specification and subsequent claim to censure specific component.Affiliated neck Has usually intellectual in domain, it is to be appreciated that manufacturer may call same component with different nouns.This specification And subsequent claim is in a manner that the difference of title is used as difference component, but with component functionally Difference is used as the benchmark of difference.It is opened in the "comprising" system of specification in the whole text and subsequent claim mentioned in for one The term of formula, therefore should be construed to " including but not limited to ".In addition, " coupling " word is comprising any directly and indirect herein Electrical connection.Therefore, if one first device of described in the text is coupled to a second device, representing the first device can be straight The second device is connected in succession or is coupled indirectly to the second device through other devices or connection means.
Compared to the source electrode driver of known technology, the source electrode driver in the embodiment of the present invention is also operable in two kinds of works Operation mode, and the main feature system of the present embodiment also shares identical source electrode driver for two kinds of different operating modes Hardware structure.It is preferred that when the source electrode driver of the present embodiment operates in the first operating mode, reception is identical to Figure 1A Display data INDA_1, and relevant operating mode will be similar with the source electrode driver 10 of Figure 1B, and this will not be repeated here.When this reality When applying the source electrode driver of example and operating in the second operating mode, the display data after an image, correlation described below will be received Mode of operation.
Please refer to Fig.3 A and Fig. 3 B, Fig. 3 A are the signal of the display data INDA_3 after image of the embodiment of the present invention Figure, and Fig. 3 B are received the schematic diagram of display data INDA_3 in Fig. 3 A by one source driver of the embodiment of the present invention 30.Preferably Ground, the display data INDA_3 of the present embodiment can pass through a clock generator(Do not show in figure)An and polarity control signal(Figure In do not show), the display data INDA_1 of Figure 1A is mapping to display data INDA_3, i.e. display data INDA_3 is also a sequence Formula data and be sequentially DATA (B), DATA (A), DATA (D), DATA (C) ..., DATA (Y), DATA (X), as image Mode can pass through different soft and hardware designs between clock generator and polarity control signal, non-limiting the present invention herein Scope.In addition, as shown in Figure 3B, the source electrode driver 30 of the present embodiment includes a shift register 300, transmission channel CL [1], CL [2] ..., CL [X] ... CL [n-1], CL [n] and an output module 308, wherein, each transmission channel CL [X] bag Containing a temporary storage module 302_X, a voltage position rank converter 304_X and a polarity digital analog converter 306_X, and export Module 308, which includes operational amplifier 308_1~308_n and can correspond to, is coupled to transmission channel CL [1]~CL [n], in addition, temporarily Storing module 302_X also includes one first buffer memory unit 302_1_X and one second buffer memory unit 302_2_X.
In the case, when the shift register 300 of source electrode driver 30 receives the display data INDA_3 of image Afterwards, display data DATA (B), DATA (A), DATA (D), DATA (C) ..., DATA (Y), DATA (X) will correspondence be transmitted to First buffer memory unit 302_1_1~302_1_n of temporary storage module 302_1~302_n in defeated channel CL [1]~CL [n], and thoroughly After a stand-by period(Or by a control instruction), then by the display data in first buffer memory unit 302_1_1~302_1_n DATA (B), DATA (A), DATA (D), DATA (C) ..., DATA (Y), DATA (X) correspondence be transmitted to the second buffer memory unit 302_2_1~302_2_n, to ensure the transmission correctness of data.
Then, second buffer memory unit 302_2_1~302_2_n exports display data DATA (B), DATA (A), DATA (D), DATA (C) ..., DATA (Y), DATA (X) to voltage position rank converter 304_1~304_n, to judge different display numbers According to voltage level, and then again by display data DATA (B), DATA (A), DATA (D), DATA (C) ..., DATA (Y), DATA (X) multiple voltage levels are transmitted to polarity digital analog converter 306_1~306_n, turn simulated operation to carry out a number. It is preferred that in this present embodiment, the signal that voltage position rank converter 304_1~304_n is exported is digital signal, and polar number The signal that word analog converter 306_1~306_n is exported is analog signal, and neighboring transmission channel will be shared in the present embodiment Polarity digital analog converter, such as transmission channel CL [1] include a positive polarity digital analog converter, transmission channel CL [2] Comprising a negative polarity digital analog converter, transmission channel CL [3] and comprising a positive polarity digital analog converter, and transmit letter Road CL [4] and comprising a negative polarity digital analog converter, other the rest may be inferred it, make phase in transmission channel CL [1]~CL [n] Neighbour will export the voltage level of dissimilar polarities between the two, certainly, set positive polarity digital analog converter between transmission channel Or the position of negative polarity digital analog converter, it can also correspond to exchange rather than to limit scope of the invention.
Finally, output module 308 receives transmission data DATA (B), DATA in transmission channel CL [1]~CL [n] by corresponding (A), DATA (D), DATA (C) ..., multiple analog signals corresponding to DATA (Y), DATA (X)(Multiple electricity after judging Voltage level signal), multiple analog signals corresponding to multiple display datas are rearranged to carry out an odd-times swap operation, Multiple simulations after odd-times swap operation are then received by operational amplifier 308_1~308_n of output module 308 again to believe Number, to amplify multiple voltage levels corresponding to multiple display datas, make source electrode driver 30 can sequentially output-voltage levels-V (A)、V(B)、-V(C)、V(D)、…、-V(X)、V(Y).It is preferred that the odd-times swap operation in the present embodiment only exchanges transmission In channel CL [1]~CL [n] multiple analog signals of the corresponding output of adjacent the two once, i.e. the electricity of the reception of output module 308 Voltage level for V (B) ,-V (A), V (D) ,-V (C) ..., V (Y) ,-V (X), and correspond to output voltage level be-V (A), V (B)、-V(C)、V(D)、…、-V(X)、V(Y).Certainly, those skilled in the art also adaptive modification output module 308 operation Mode makes multiple analog signals of the corresponding output of adjacent the two in transmission channel CL [1]~CL [n] will be by exchange odd-times (Such as three times, it is five inferior), and then output-voltage levels for-V (A), V (B) ,-V (C), V (D) ... ,-V (X), V (Y), also fall within In scope of the invention.
In simple terms, when the source electrode driver 30 of the present embodiment operates in the second operating mode, the aobvious of image will be received Registration evidence, and in transmission channel CL [1]~CL [n] after number turns simulated operation, export the multiple of corresponding display data Voltage level, then odd-times swap operation is carried out to rearrange multiple voltage levels of display data by output module 308, into And corresponded to by operational amplifier 308_1~308_n amplify multiple voltage levels come output-voltage levels-V (A), V (B) ,-V (C), V (D) ... ,-V (X), V (Y), also can refer to shown in Fig. 3 A, that is, transmit data DATA (B), DATA (A), DATA (D), DATA (C) ..., multiple voltage levels of the transmission channel CH [1] corresponding to DATA (Y), DATA (X)~CH [n] be sequentially-V (A), V(B)、-V(C)、V(D)…-V(X)、V(Y)。
In other words, source electrode driver 30 input display data DATA (B), DATA (A), DATA (D), DATA (C) ..., After DATA (Y), DATA (X), will corresponding output-voltage levels-V (A), V (B) ,-V (C), V (D) ... ,-V (X), V (Y).It compares In known technology(As shown in Fig. 2A, Fig. 2 B), 20 system of source electrode driver, which receives, includes display data for DATA (A), DATA (B) ..., DATA (X), DATA (Y), and carried out twice in transmission channel(Or even-times)The swap operation of display data Just it is able to the display data of output opposed polarity, the source electrode driver 30 of the embodiment of the present invention is then changed to receive the multiple of image Display data, and utilize output module 308 carry out odd-times swap operation, you can complete identical different voltage level-V (A), V (B) ,-V (C), V (D) ..., the output of-V (X), V (Y) operation, while the connection relation between the computer hardware of source electrode driver 30 Without change, to retain higher design flexibility.
It refer again to Fig. 4 A and Fig. 4 B, the display data INDA_4's that wherein Fig. 4 A are received by the embodiment of the present invention Schematic diagram, and Fig. 4 B are received the schematic diagram of display data INDA_4 in Fig. 4 A by one source driver of the embodiment of the present invention 40, And source electrode driver 40 can also support the first operating mode and the second operating mode.As shown in Figure 4A and 4B, source electrode is worked as Driver 40 operates in the second operating mode, the display of Figure 1A in the similar known technology of the display data INDA_4 systems received Data INDA_1 and include DATA (A), DATA (B) ..., DATA (X), DATA (Y).In addition, the source drive shown in Fig. 4 B Device 40 also includes most of identical composition component similar to source electrode driver 30, and only source electrode driver 40, which also includes, translates Code device 400 substitutes the shift register 300 of source electrode driver 30, and accordingly, the decoder 400 of source electrode driver 40 is except being used for Receive display data DATA (A), DATA (B) ..., DATA (X), DATA (Y) outside, also be used for receive corresponding to display data DATA (A), DATA (B) ..., an at least polarity set signal of DATA (X), DATA (Y), be, for example, the present embodiment in one A polarity control signal POL and frame start signal YDIO makes decoder 400 that will be risen according to polarity control signal POL and frame Beginning signal YDIO come image display data DATA (A), DATA (B) ..., DATA (X), DATA (Y) to transmission channel CL [1]~ CL [n], also adaptive modification polarity control signal POL herein and frame start signal YDIO is certain those skilled in the art Other setting signals or correlation step for can be used to represent polarity, it is non-limiting scope of the invention.In addition, source electrode drives First buffer memory unit 302_1_1~302_1_n, the second buffer memory unit of transmission channel CL [1]~CL [n] in dynamic device 40 302_2_1~302_2_n, voltage position rank converter 304_1~304_n, polarity digital analog converter 306_1~306_n with And output module 308(And its operational amplifier 308_1~308_n)Operating method, the operation of all similar source electrode driver 30 Mode, this will not be repeated here.In other words, the source electrode driver 40 of the present embodiment also can pass through decoder 400 to carry out display data DATA (A), DATA (B) ..., DATA (X), the map operation of DATA (Y), and by output module 308 carry out odd-times exchange Operation, with export corresponding to the voltage level-V (A) of transmission channel CL [1]~CL [n], V (B) ,-V (C), V (D) ... ,-V (X)、V(Y).Can referring again to shown in Fig. 4 A, i.e., in source electrode driver 40, transmit DATA (A) in data INDA_4, DATA (B), DATA (C), DATA (D) ..., multiple voltage levels of transmission channel CH [1]~CH [n] corresponding to DATA (X), DATA (Y) Also it is sequentially-V (A), V (B) ,-V (C), V (D) ...-V (X), V (Y).
Fig. 5 A, Fig. 5 B and Fig. 5 C are refer again to, wherein Fig. 5 A are that decoder 400 utilizes a dot inversion in Fig. 4 B(Dot Inversion)The schematic diagram of the display data of rule output image, Fig. 5 B are that decoder 400 is inverted using a column in Fig. 4 B (Column Inversion)The schematic diagram and Fig. 5 C of the display data of rule output image are 400 profit of decoder in Fig. 4 B With one by one plus two wires invert(1+2Line Inversion)The schematic diagram of the display data of rule output image.
Specifically, as shown in Figure 5A, decoder 400 by receiving polarity control signal POL, frame start signal YDIO and One data-signal LD, and data-signal LD systems represent the display data of different channels line.Specifically, the first basis of decoder 400 Any pulse signal is judged in each frame corresponding to the position channel of one first line and this line in frame start signal YDIO Why is polarity, and judges the polarity rule of its subsequent plural line, to reach the function of polarity detecting, and then judges polarity control The mode of signal POL processed is dot inversion rule, with the operating mode of corresponding switching source electrode driver 40(Detecting as shown in Figure 5A Correspondence is judged as the first operating mode Phase I and the second operating mode Phase II by signal DSL1), while decoder 400 also by data-signal LD representated by different transmission channels multiple display data images to correct transmission channel.Until Frame start signal YDIO generates another pulse signal again when, be used for informing decoder 400 will carry out the mappings of dissimilar polarities with Output operates, and the subsequent operation of decoder 400 is completed with this rule.
In addition, as shown in Figure 5 B, column inverted rules also can be used to export the display data of image in decoder 400.When translating When code device 400 is using column inverted rules, it is every to judge that decoder 400 still first receives any pulse signal in frame start signal YDIO Why is polarity in one frame corresponding to the position of one first line and this line, and judges the polarity rule of its subsequent plural line Then, to reach the function of polarity detecting, and then the mode of polarity control signal POL is judged for column inverted rules, switched with corresponding The operating mode of source electrode driver 40(Correspondence is judged as the first operating mode Phase by detection signal DSL2 as shown in Figure 5 B I and the second operating mode Phase II), while decoder 400 also by data-signal LD representated by different transmission channels Multiple display data images are to correct transmission channel.When frame start signal YDIO generates another pulse signal again, use It will inform that decoder 400 will carry out the mappings of dissimilar polarities and be operated with output, and with this rule come after completing decoder 400 Continuous operation.
Furthermore as shown in Figure 5 C, decoder 400 also can be used one plus two wires inverted rules export the display number of image According to accordingly, decoder 400 still first receives in frame start signal YDIO any pulse signal to judge one first line in each frame Position and this line corresponding to polarity why, and the polarity rule of its subsequent plural line is judged, to reach polarity detecting Function, and then judge the mode of polarity control signal POL for one plus two wires inverted rules, switch source electrode driver 40 with corresponding Operating mode(Correspondence is judged as the first operating mode Phase I and the second work by detection signal DSL3 as shown in Figure 5 B Operation mode Phase II), while decoder 400 also by data-signal LD representated by different transmission channels multiple display datas Image is to correct transmission channel.When frame start signal YDIO generates another pulse signal again, it is used for informing decoder 400 will carry out the map operation of dissimilar polarities, and the subsequent operation of decoder 400 is completed with this rule.
In addition, the display data used in the present embodiment can also be correspondingly embedded at least one setting grouping, to be used for informing Decoder 400 carries out the map operation of dissimilar polarities.It refer to Fig. 6, the display that Fig. 6 is received by decoder 400 in Fig. 4 B The schematic diagram of data INDA_6.As shown in fig. 6, display data INDA_6 not only include DATA (A), DATA (B) ..., DATA (X), DATA (Y) outside, also includes setting grouping SP1 and is arranged in front of display data DATA (A) to represent a polarity Setting signal.Wherein, setting grouping SP1 is included there are two bit S0, S1, and the wherein coding mode of bit S1 is H2DOT, such as By a normal encoding(- ,+,-,+)It is changed to H2DOT codings(- ,+,+,-), and then include two bits S0, S1 and inform decoding Device 400 carries out the information of the polarity inversion operation of similar polarity control signal POL.
In addition, Fig. 7 is refer again to, the signal for another display data INDA_7 that Fig. 7 is received by decoder 400 in Fig. 4 B Figure.As shown in fig. 7, the setting grouping SP2 in the display data INDA_6 compared to Fig. 6, display data INDA_7 only includes One bit S0, and the information of the polarity inversion of similar polarity control signal POL is also represented, accordingly, display data INDA_7's sets Surely grouping SP2 will repeatedly be embedded between each two display data, make display data INDA_7 be arranged as DATA (A), SP2, DATA (B), SP2..., DATA (Y) etc..Certainly, those skilled in the art also can refer to the display data that the present embodiment is provided INDA_6, INDA_7 with adaptive design the setting means of different set grouping, and then multiple display datas and setting are grouped Simultaneous transmission is non-limiting scope of the invention into decoder 400.
Further, the driving method that the source electrode driver 30,40 of the second operating mode is applicable in is operated in the present embodiment, A driving flow 80 can be further summarized as and be compiled as program code, and be stored in a driving chip of display device, As shown in Figure 8.Driving flow 80 comprises the steps of:
Step 800:Start.
Step 802:Multiple display datas are received, and judge multiple voltage levels of multiple display datas.
Step 804:In transmission channel CL [1]~CL [n], number is carried out to multiple voltage levels of multiple display datas Turn simulated operation.
Step 806:The multiple display datas for turning simulated operation to having completed number by output module 308 carry out odd-times friendship Operation is changed, and then output-voltage levels are-V (A), V (B) ,-V (C), V (D) ...-V (X), V (Y).
Step 808:Terminate.
The detailed operation of flow 80 is driven, the relevant paragraph and schema that can pass through source electrode driver 30,40 are illustrated, This is not repeated.It is preferred that when if step 802 is used for source electrode driver 30, multiple display datas will transmit through polarity control signal POL, frequency controller and shift register 300 operate to complete relevant receive;If step 802 is used for source electrode driver 40 When, multiple display datas will transmit through polarity control signal POL and be operated with decoder 400 to complete relevant receive.In addition, it performs Before multiple voltage levels that multiple display datas are judged in step 802, source electrode driver 30,40 is with going back first adaptive by multiple displays Data mapping is to correct transmission channel CL [1]~CL [n].Certainly, those skilled in the art also can refer to the embodiment of the present invention Fig. 6, display data INDA_6, INDA_7 shown in 7 make step 802 directly represent pole with reference to being embedded between multiple display datas Dot inversion rule, column inverted rules or one plus two wires inverted rules are compiled as other by the setting grouping of sex reversal information Judgement flow, be also scope of the invention with the operation of step 802 of arranging in pairs or groups simultaneously.
In conclusion the embodiment of the present invention provides the mode of operation using image operation and odd-times data exchange, with Switch on the source electrode driver and its driving method of two kinds of operating modes.An it is preferred that decoder(Or by time schedule controller with One shift register)It is operated using a polarity control signal to carry out the image of display data, then it is more by output module progress The operation of the odd-times data exchange of multiple display datas or other embedded settings are grouped to multiple displays between a transmission channel In data, make the source electrode driver that the present embodiment is provided under two kinds of operating modes, need not all change the company of computer hardware Relation, the corresponding design flexibility for improving source electrode driver are connect, while increase applies model for the source electrode driver of display device It encloses.
The foregoing is only a preferred embodiment of the present invention, is not intended to limit the invention, for the skill of this field For art personnel, the invention may be variously modified and varied.Within the spirit and principles of the invention, that is made any repaiies Change, equivalent substitution, improvement etc., should all be included in the protection scope of the present invention.

Claims (6)

1. a kind of source electrode driver for display device switches on two kinds of operating modes, which is characterized in that
Include:
One decoder, for receiving multiple display datas, a polarity control signal and a frame start signal,
The inverted rules and according to institute according to used in frame start signal judgement is intended to show the multiple display data State inverted rules and the polarity control signal, the multiple display data of image to the multiple transmission channel;
Multiple transmission channels, wherein each transmission channel includes:
One temporary storage module is coupled to the decoder, for receiving one in the multiple display data;
One voltage position rank converter, is coupled to the temporary storage module, for judging the voltage of one in the multiple display data Level;And
One polarity digital analog converter is coupled to the voltage position rank converter, for in the multiple display data one The voltage level of person carries out number and turns simulated operation;And
One output module is coupled to multiple polarity digital analog converters of the multiple transmission channel, has been completed for exporting The number turns the multiple voltage level corresponding to the multiple display data of simulated operation;
Wherein, the multiple display data of the corresponding output of adjacent the two includes dissimilar polarities in the multiple transmission channel Voltage level, and the output module also carries out odd-times swap operation before the multiple voltage level is exported.
2. source electrode driver as described in claim 1, which is characterized in that the output module also includes multiple operation amplifiers Device, for amplifying the multiple voltage level of the multiple display data, and described in odd-times swap operation system exchange The multiple display data of the corresponding output of adjacent the two is once or odd-times in multiple transmission channels.
3. source electrode driver as described in claim 1, which is characterized in that the inverted rules are dot inversion rule, column reversion Rule or one plus two wires inverted rules.
4. a kind of driving method for the one source driver for being used for a display device, the source electrode driver switches on two kinds of work Pattern, which is characterized in that the driving method includes:
Multiple display datas, a polarity control signal and a frame start signal are received, is intended to show according to frame start signal judgement Show an inverted rules used in the multiple display data and according to the inverted rules and the polarity control signal, The multiple display data of image is to the multiple transmission channel;
In multiple transmission channels, a number is carried out to multiple voltage levels of the multiple display data and turns simulated operation;With And
Turn the multiple display data of simulated operation to having completed the number by an output module of the source electrode driver An odd-times swap operation is carried out, and then exports the multiple voltage level;
Wherein, the multiple display data of the corresponding output of adjacent the two includes dissimilar polarities in the multiple transmission channel Voltage level.
5. driving method as claimed in claim 4, which is characterized in that also amplified using multiple operational amplifiers the multiple The multiple voltage level of display data, and the odd-times swap operation system is exchanged adjacent two in the multiple transmission channel The multiple display data of the corresponding output of person is once or odd-times.
6. driving method as claimed in claim 4, which is characterized in that the inverted rules are dot inversion rule, column reversion rule Then or one adds two wires inverted rules.
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