GB2325329A - Digital-type liquid crystal display panel driving circuit - Google Patents
Digital-type liquid crystal display panel driving circuit Download PDFInfo
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- GB2325329A GB2325329A GB9810599A GB9810599A GB2325329A GB 2325329 A GB2325329 A GB 2325329A GB 9810599 A GB9810599 A GB 9810599A GB 9810599 A GB9810599 A GB 9810599A GB 2325329 A GB2325329 A GB 2325329A
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- digital
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- liquid crystal
- display panel
- picture element
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 56
- 238000000034 method Methods 0.000 claims description 6
- 239000013078 crystal Substances 0.000 claims description 2
- 239000002699 waste material Substances 0.000 abstract description 2
- 102100031418 EF-hand domain-containing protein D2 Human genes 0.000 description 7
- 101000802344 Homo sapiens Zinc finger SWIM domain-containing protein 7 Proteins 0.000 description 7
- 230000003321 amplification Effects 0.000 description 2
- 238000003491 array Methods 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 102100022375 Dentin matrix acidic phosphoprotein 1 Human genes 0.000 description 1
- 101000804518 Homo sapiens Cyclin-D-binding Myb-like transcription factor 1 Proteins 0.000 description 1
- 101000901629 Homo sapiens Dentin matrix acidic phosphoprotein 1 Proteins 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
- G09G3/3611—Control of matrices with row and column drivers
- G09G3/3685—Details of drivers for data electrodes
- G09G3/3688—Details of drivers for data electrodes suitable for active matrices only
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2310/00—Command of the display device
- G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
- G09G2310/0264—Details of driving circuits
- G09G2310/027—Details of drivers for data electrodes, the drivers handling digital grey scale data, e.g. use of D/A converters
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2310/00—Command of the display device
- G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
- G09G2310/0264—Details of driving circuits
- G09G2310/0297—Special arrangements with multiplexing or demultiplexing of display data in the drivers for data electrodes, in a pre-processing circuitry delivering display data to said drivers or in the matrix panel, e.g. multiplexing plural data signals to one D/A converter or demultiplexing the D/A converter output to multiple columns
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0271—Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping
- G09G2320/0276—Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping for the purpose of adaptation to the characteristics of a display device, i.e. gamma correction
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
- G09G3/3611—Control of matrices with row and column drivers
- G09G3/3648—Control of matrices with row and column drivers using an active matrix
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
- G09G3/3611—Control of matrices with row and column drivers
- G09G3/3685—Details of drivers for data electrodes
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Liquid Crystal Display Device Control (AREA)
- Liquid Crystal (AREA)
Abstract
A digital-type liquid crystal display panel driving circuit 40 that drives a liquid crystal panel 30 with a digital image signal to display a picture on the liquid crystal panel. The driving circuit 40 is provided with a storage device array 42,44 for temporarily storing n picture element data imputed thereto, a multiplexor array 46 for selecting k picture element data from the n picture element data stored in the storage device array, a digital to analog converter array 48 for sequentially converting the selected k picture element data from the multiplexor array 46 into k analog picture element signals, and a demultiplexor array 54 for selecting k of n data lines of the liquid crystal display panel 30 and delivering the k analog picture element signals to the selected k data lines. The driving simplifies the circuit configuration and reduces the waste of instantaneous power.
Description
2325329 DIGITAL-TYPE LIQUID CRYSTAL DISPLAY PANEL DRIVING CIRCUIT This
invention relates to a display apparatus employing liquid crystal, panel, and more particula- _ L 1Y to a digita' -v U t 1 display panel -- L- L L-_pe lia id crvs-a, driving circuit that drives the licruid crystal panel with a digital image signal.
Recently, in the image media, there has been a trend toward the use of digital, as opposed to analog, image signals. Di gi t al image signals can be more easily o in -,3 comnresse(-', nroviding a hig.h. reso-u--- '0 1 -tu r e a viewer. As a result, became desirable for licruid crystall dJsl,:)lavs to be driven by analog as well as digital image signals. Accordingly, the driving circuit for the i au - ed to be liquid crystal display panel has been conf., - L adaptable for driving picture elements or 3D-ixels -Ln a liquid crystal panel requiring an analog signal. As a result, analog-type liquid crystal display driving circuits have come to coexist with digital-type liquid crystal display driving circuits.
Such liquid crystal display panel driJv-,,ng circuits must 30 be able to accurately apply a voltage corresponding to an image signal to each picture element in the liquid crystal display panel for a sufficient time. To this end, in the analog-type liquid crystal display panel driving circuit, 2 the alternative of sequentially driving picture elements in one horizontal scanning interval by at least two constant number units was disclosed in Japanese Laid-open Patent Publication No. Puyng 7-181933, publisned on July 21, 1995 and filed by Casio Cc, Ltd. In this Japanese patent, an analog-type liquid crystal display p a ne 1 driving circuit delays an image signal by means of the delay device, and sequentially applies the delayed image from the center of signal to picture elements extending L wl-ii le the horizontal line to the right end thereo-L applying the uidelayed image signal to picz:ure elements extending from the left end of the horizontal line to 'the center thereof. Such an analog-type liquid crystal display panel driving circuit-- could secure a sufficient signal supplying 'Lime for each of the picture elements even when it sequentially drove the picture elements in the horizontal line by the two number units becauseit utilized the analog image signal itself as a driving voltage. Otherwise, a digital-type liquid crystal disz)lay J cie-nt s- panel driving circuit can not secure a suf I ignal supplying time for each of the picture elements by the analog-type liquid crystal display panel driving scheme as disclosed in the Japanese patent because it requires time to convert the digital image signal into an analog image signal. Accordingly, the digital-type liauid crvstal display panel driving circuit is confligured to drive picture elements in one horizontal line, as shown in Fig. 1.
Referring to Fig. 1, a liquid crystal display panel 10 includes 2400 data lines DLl to DL2400 connected to 600 picture elements arranged in the horizontal direction, respectively. A driving circuit 20 for driving 600 X 2400 3 number of picture elements in the liquid crystal display panel 10 includes a first latch array 22 connected to the first to third data buses DB1 to DB3, a second latch array 24 cascade-connected to the first latch array 22, a to analog (D-A) converter arrav 26, and an output 5 digital t amplifier array 28. The first and second latch arrays 22 and 24 each consist of 2400 latches. The 2400 latches included in the first latch array 22 are divided into three units of 800 latches each, the units being separately connected to the first to third data buses DB1 to DB3. Further, the 2400 latches included in the first latch array 22 are sequentially driven for the three units to input red(R), green(G) and blue(B) picture elements for a single horizontal line from the first to third data buses DBl to DB3. Meanwhile, the 2400 latches included in the second llatch array 24 receive picture element data from the 2400 latches in the first latch array 22 and deliver it to the D-A converter array 26, respectively. Accordingly, the D-A converter array 26 -s all - conver+.he element data from the second latch array 24 -Into picture elie--,nen-t- signals and applies the conver-Led 2400 picture element signals to the output amplifier array 28. To this end, the DA converter array 26 consists of 2400 D-A converters commonly inputting a certain number (e.g., five) of converting source signals from a gamma correction portion not shown. These respective 2400 DA converters generate pJIcture element signals by adding a part of or all of the converting source signals in accordance with a logical value of the picture element data from -the corresponding latch of the second latch array 24. Finally, the output amplifier array 28 amplifies the 2400 picture element signals from the D-A converter array 26 at a constant amplification ratio, and 4 distributively applies the amplified 2400 picture signals to the 2400 data lines DL1 to DL2400 of the liquid crystal display panel 10. To this end, the output amplifier array 28 also comprises 2400 output amplifiers which are 5 distributively connected to the 2400 D-A converters in the D- A converter arrav 26, respectivelv.
As described above, the conventional digital-type liquid crystal display panel driving circuit can secure a sufficient signal supplying time for every picture element by simultaneously driving the picture elements for one horizontal line in the liquid crystal panel. In the conventional d-igital-type liquid crystal display panel driving circuit-, however, since it employs D-A converters and output amplifiers which respectively correspond to the number picture elements -included in. the horizontail line of the liquid crystal display panel, the circuit configuration thereof is not only complicated, but also large in size. Also, in the conventional digital-type liquid crystal display panel driving circuit, a large number of D-A converters and Output amplifiers must be simultaneously driven, wasting instantaneous power.
Accordingly, it is an object of the present invention to provide a digital-type liquid crystal display panel driving circuit with a simplified circuit configuration that reduces the waste of instantaneous power.
It is another object of the present invention to provide a digital-type liquid crystal display panel driving circuit which can reduce the number of lead lines in the liquid crystal display panel.
In order to attain -these and other objeccs 0 f the invention, a digitaltype liquid crystal display panel driving circuit according to the present ii n v =_ -r- t i on for selecting includes a multiplexor array i k d-'gJ'.tLa-' picture element data from n digital picture e-,e---.ne-n-. data, a digital to analog converter array for converting the k digital picture element data from the mult-in-',,exc-- ar-ray into k analog picture element signals, and a demultlplexor array connected to n data lines for selecting k Of Lhe n. data lines and for transferring the k anallog picture element signals from the digital to analog converter onto the selected k data lines.
A method for driving a digital-type licruid crysta" display panel according to the present invention includes 'the Steps of selecting k digital picture ellement- dZ_ta frOIRL.7. digital picture element data, converting the k C!-:'-g-'-Lai. P-'C-LUre elemenz data from t'le MULtiplexor ar-ray into k analog D-Lc--ure element signals, selecting k of n data lines, and transferring the k analog picture element signals from the digital to analog converter onto the selected k data lines.
ii For a better understanding of the present invention, an embodiment will now be described by way of example, with reference to the accompanying drawings, in which:
Fig. 1 shows a configuration of a liquid crystal diisplay apparatus employing the conventional liau-id CrVStal display panel driving circuit for a digital image signal; 6 Fig. 2 shows a configuration of a liquid crystal display apparatus employing a digital-type liquid crystal display panel driving circuit according to an embodiment or the present invention; and Fig. 3 is a operation timing diagram of each part of the driving circuit shown in Fig. 2.
Referring to Fig 2, there is shown a liquid crystal display apparatus that includes a digital-type liquid crystal display panel driving circuit according to an embodiment of the present invention. in Fig. 2, the liquid crystal display apparatus comprises a liquid crystal display panel driving circuit 40 connected to a liquid crystal display panel 30. The liquid crystal display panel 30 comprises 2400 data lines DLl to DL2400 that are commonly connected to 600 picture elements arranged -in the vertical direction, respectively.
The driving circuit 40 for driving 600 x 2400 picture elements in the liquid crystal display panel 30 includes a first latch array 42 connected to the first to third data buses DB1 to DB3, a second latch array 44 cascade- connected to the first latch array 42, a multiplexor array 46, and a D-A converter array 48. The first and second latch arrays 42 and 44 each consist of 2400 latches. The 2400 latches included in the first latch array 42 are divided into three units of 800 latches each, the units being separately connected to the first to third data buses DB1 to DB3. Further, the 2400 latches included in the first latch array 42 are sequentially driven for the three units to receive R, G, and B picture element data 7 for one horizontal line from the first to third data buses DBl to DB3. Meanwhile, 2400 latches included in the second latch array 44 receive picture element data from the 2400 latches in the first latch array 42 simultaneously, and deliver the same to the multiplexor array 46, respectively.
The multiplexor array 46 divides the 2400 picture element data from the second latch array 44 into three un'_s 800 latches each and delivers the same to the D-A converter array 48 three times. To this end, the multiplexor array 46 consists of 800 multiplexors M?l to MP800 for receiving the first to third switching control signals SWS1 to SWS3 from the first to third control lines SLl to SL3, respectively. --Each of these 800 multiplexors transfers picture element data from the three latches in the second latch array 44 sequentially to the D-A converter array 48 using the first to third Switching control signals SWS1 to SWS3. The first to third switching control signals SWS! To SWS3 sequentially have a logical value of "1" during one horizontal period, as shown in Fig. 3.
Each of the 800 multiplexors MP1 to MPBOO is comprised of three groups of MOS transistors MF for distributively inputting the first to third switching control signals SWS1 to SWS3 to the gates thereof Note, however, that there should three groups of 5 MOS transistors MF (for a total of 15 MOS transistors MF) in the case of S-bit picture element data. The sources of these three groups of MOS transistors MF included in a single multiplexor MP are connected to the three latches included in the second latch array 44, respectively, while the drains of the three groups of MOS transistors are commonly connected with respect to each bit of the picture element data.
8 Further, the three groups of MOS transistors MF included in a single multiplexor MP are sequentially turned on during one horizontal interval by the first to third switching control signals SWS1 to SWS3 to transfer the picture element data -from the corresponding latch in the second latch array 44 to the D-A converter array48.
Accordingly, the D-A converter array 48 converts all of the 800 picture element data from the multiplexor array 416 into picture element signals. To this end, the D-A 800 D-A converters for converter array 48 is comprised of commonly receiving a constant number (e,g-, at least five) of converting source signals from a gamma correction portion 50. Each of these 800 D-A converters converts the picture element da'Ea into analog picture element signals by selectively adding either a part of or the entire of a certain number of converting source signals from the gamma correction portion 50 in accordance With a logical value of the picture element data -From the corresi:=d-ing multiplexor MP. As a result, each of the 800 D-A converters converts 'three picture element data i n t 0 analog picture element signals during a single horizontal scanning interval.
The driving circuit 40 also includes an output amplifie-- array 52 and a demultiplexor array 54 which are seriall connected between the D-A converter array 48 and the data lines DL1 to DL2400 of the liquid crystal display panel 30. The output amplifier array 52 amplifies the 800 picture element signals from the D-A converter array 48 at a certain amplification ratio and outputs the amplified 800 picture element signals to the demultiplexor array 54. To this end, the output amplifier array also is comprised of 800 output amplifiers distributively connected to the 800 9 D-A converters of the D-A converter array 48. Finally, the demuitiplexor array 54 sequentially transfers the 800 amplified picture element signals from the output amplifier array 52 onto the 2400 data lines DLl to DL2400 three times. To this end, the demultiplexor 54 is comprised of 800 demultiplexors DMPI to DMP800 for receiving the first to third switching control signals SWS1 to SWS3 from the first to third control lines SLl to SL3, respectively. Each of these 800 de.multiplexors DMP1 to DMPBOO sequentially transfers the picture element signals from the output amplifier array 52 to three data lines DL by the first to third switching control signals SWS1 to SWS3 which have a logical value of 1 " sequentially during one horizontal interval, as shown in Fig. 3. To this end, each of the 800 demultiplexors DMP! to DMP800 is com- orised of three MOS trans-Lstors MS for distributively receiving the first to third Switching control signals SWS! to SWS3 to the gate thereof. The sources of the three MOS transistors MS included in a single demultiplexor DMP are commonly connected to the output terminal of one output amplifier included in the output amplifier array 52, and their drains are distributively connected to three data lines DL. Further, the MOS transistors MS included in one demultipexor DMP are sequentially turned on during one horizontal interval by the first to third switching control signals SWS1 to SWS3 to thereby distributively apply the corresponding output amplifier included in the output amplifier array S2 to the three data lines DL.
As described above, the liquid crystal panel driving circuit of digital type according to the present invention can reduce the number of both the D-A converters and the output amplifiers into a half or one-third the number of data lines, by providing the multiplexor array between the latch array for temporarily storing the picture element data for one line and the D-A converter array for converting the picture element data into the picture element signal, and by providing the demultiplexor between -he dat 1-'-e the output amplifier array and t La lines of th liquid crystal display panel. Accordingly, the digital- type liquid crystal panel driving circuit according to the present invention not only simplifies the circuit configuration, but also reduces the amount of wasted instantaneous power. Also, it reduces the number of lead lines in the liquid crystal display panel by mounting the demultiplexor in 'Lhe liquid crystal display panel.
Although the present invention has been explained by the embodiments shown in the drawings described above, it should be understood to the ordinary skilled person in the art that the invention is not limited to the embodiments, but. -rather that various changes or modifications thereof are possible without departing from the spirit of the invention. Accordingly, the scope of the invention shall be determined only by the appended claims and their equivalents.
11
Claims (1)
- CLAIMS:I. A digital-type liquid crystal display panel driving circuit, comprising:a multiplexor array for selecting k digital picture element data from n digital picture element data; a digital to analog converter array for converting -he -multiplexor the k digital P'Cture element data froz-aL L _L - array into k analog picture element signals; and a demultiplexor array connected to n data lines for selecting k Of -he n data lines and for transferring 'the k analog picture element signals from the digital to analog converter onto the selected k data lines.2. The digital type liquid crystal display panel driving circui-t of claim I further including:23 a liquid crystal display panel having n data lines arranged in parallel in a horizontal direction, L_ - - said n data lines being commonly connected to m picture elements arranged in a vertical direction.3. The d-ig-tal-t-vne licraid crystal display panel driving circuit of claim 1 or 2, wherein said demultiplexor array is loaded in said liquid crystal display panel. 4. The digital-type liquid crystal display panel driving circuit of claim 1, 2 or 3, further including: a storage device array for temporarily storing n digital picture element data inputted thereto and for inputting the n digital picture element data into the MUltiplexor array. 5. The digital-type liquid crystal display panel driving circuit of claim 1, 2, 3 or 4, further including:an output amplifier array provided between said digital to analog converter array and the demultiplexo--marray.12 6 The digital-type liquid crystal display panel driving circuit of claim 1, 2, 3, 5 or 5, wherein the multiplexor array and demultiplexor array include MOS transistors.7. The digital-type liquid crystal display panel driving circuit of claim 1, 2, 3, 4, 5 or 6, wherein a selecting time of the demultiplexor array is equal to k/n.S. A method for driving a digital-'ype licruld cryszal display panel comprising the steps of: selecting k digital picture element data digital picture element data; converting the k digital picture element data from -I the multiplexor arrav into k analog picture element signals; f rem n selecting k of n data lines; and transferring the k analog picture element signals from the digital to analog converter on..to the selected k data lines. 9. The method of claim 8 further including the steps of: Le. L-aporar-J-ly st-or-ing n digital picture element and -ting -the n dicJtal pict,,re ele L i np u, _rnent data into the multiplexor array.10. The method of claim 8 or 9 further including the steps of: amplifying the output of the digital to analog converter. 11. The method of claim 8, 9 or 10 where the step of selecting k of n data lines includes the step of: selecting k of n data lines a time equal to k/n.13 12. A digital-type liquid crystal display panel substantially as hereinbefore described with reference to and/or substantially as illustrated in Fig. 2 and/or 3 of the accompanying drawings.13. A method for driving a digital-type liquid crystal display panel, substantially as hereinbefore described with reference to and/or substantially as illustrated in Fig. 2 and/or 3 of the accompanying drawings.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019970019142A KR100229380B1 (en) | 1997-05-17 | 1997-05-17 | Driving circuit of liquid crystal display panel using digital method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB9810599D0 GB9810599D0 (en) | 1998-07-15 |
| GB2325329A true GB2325329A (en) | 1998-11-18 |
Family
ID=19506177
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB9810599A Withdrawn GB2325329A (en) | 1997-05-17 | 1998-05-15 | Digital-type liquid crystal display panel driving circuit |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JPH10319924A (en) |
| KR (1) | KR100229380B1 (en) |
| DE (1) | DE19821914A1 (en) |
| FR (1) | FR2763416A1 (en) |
| GB (1) | GB2325329A (en) |
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| FR2790584A1 (en) * | 1999-03-06 | 2000-09-08 | Lg Philips Lcd Co Ltd | METHOD FOR DRIVING A LIQUID CRYSTAL DISPLAY |
| EP1128355A3 (en) * | 2000-02-22 | 2003-05-28 | Semiconductor Energy Laboratory Co., Ltd. | Image display device and driver circuit therefor |
| WO2002071377A3 (en) * | 2001-03-02 | 2003-11-20 | Koninkl Philips Electronics Nv | Active matrix display device |
| US7006072B2 (en) | 2001-11-10 | 2006-02-28 | Lg.Philips Lcd Co., Ltd. | Apparatus and method for data-driving liquid crystal display |
| US7034797B2 (en) * | 2002-06-10 | 2006-04-25 | Seiko Epson Corporation | Drive circuit, electro-optical device and driving method thereof |
| WO2006090341A3 (en) * | 2005-02-25 | 2006-11-09 | Koninkl Philips Electronics Nv | Column electrode driving circuit and display device using it |
| CN100426362C (en) * | 2005-08-11 | 2008-10-15 | 奇景光电股份有限公司 | Driving circuit and method for driving display unit |
| US7477270B2 (en) | 2001-03-02 | 2009-01-13 | Tpo Hong Kong Holding Limited | Active matrix display device |
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| US7916110B2 (en) | 2001-10-13 | 2011-03-29 | Lg Display Co., Ltd. | Data driving apparatus and method for liquid crystal display |
| CN104766564A (en) * | 2015-04-24 | 2015-07-08 | 京东方科技集团股份有限公司 | Display panel and driving method and display device thereof |
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| JP4984337B2 (en) * | 1998-06-30 | 2012-07-25 | 富士通セミコンダクター株式会社 | Display panel drive circuit and display device |
| JP2001034237A (en) * | 1999-07-21 | 2001-02-09 | Fujitsu Ltd | Liquid crystal display |
| JP4780839B2 (en) * | 2000-02-18 | 2011-09-28 | 株式会社半導体エネルギー研究所 | Image display device drive circuit and electronic device |
| JP4831872B2 (en) * | 2000-02-22 | 2011-12-07 | 株式会社半導体エネルギー研究所 | Image display device drive circuit, image display device, and electronic apparatus |
| JP4929431B2 (en) * | 2000-11-10 | 2012-05-09 | Ｎｌｔテクノロジー株式会社 | Data line drive circuit for panel display device |
| KR100675320B1 (en) * | 2000-12-29 | 2007-01-26 | 엘지.필립스 엘시디 주식회사 | Driving Method of LCD |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2347778A (en) * | 1999-03-06 | 2000-09-13 | Lg Philips Lcd Co Ltd | Method of driving liquid crystal display |
| GB2347778B (en) * | 1999-03-06 | 2003-06-04 | Lg Philips Lcd Co Ltd | Method of driving liquid crystal display |
| FR2790584A1 (en) * | 1999-03-06 | 2000-09-08 | Lg Philips Lcd Co Ltd | METHOD FOR DRIVING A LIQUID CRYSTAL DISPLAY |
| DE10010955B4 (en) * | 1999-03-06 | 2016-12-22 | Lg Display Co., Ltd. | Method for controlling liquid crystal display devices |
| US7505017B1 (en) | 1999-03-06 | 2009-03-17 | Lg Display Co., Ltd. | Method of driving liquid crystal display |
| EP1128355A3 (en) * | 2000-02-22 | 2003-05-28 | Semiconductor Energy Laboratory Co., Ltd. | Image display device and driver circuit therefor |
| US7301520B2 (en) | 2000-02-22 | 2007-11-27 | Semiconductor Energy Laboratory Co., Ltd. | Image display device and driver circuit therefor |
| US7477270B2 (en) | 2001-03-02 | 2009-01-13 | Tpo Hong Kong Holding Limited | Active matrix display device |
| WO2002071377A3 (en) * | 2001-03-02 | 2003-11-20 | Koninkl Philips Electronics Nv | Active matrix display device |
| EP1388142B1 (en) * | 2001-03-02 | 2013-06-05 | TPO Hong Kong Holding Limited | Active matrix display device |
| KR100858885B1 (en) | 2001-03-02 | 2008-09-17 | 티피오 홍콩 홀딩 리미티드 | An active matrix display device, a method of providing a pixel drive signal, and a column address circuit |
| US7916110B2 (en) | 2001-10-13 | 2011-03-29 | Lg Display Co., Ltd. | Data driving apparatus and method for liquid crystal display |
| US7006072B2 (en) | 2001-11-10 | 2006-02-28 | Lg.Philips Lcd Co., Ltd. | Apparatus and method for data-driving liquid crystal display |
| US7746310B2 (en) | 2001-11-10 | 2010-06-29 | Lg Display Co., Ltd. | Apparatus and method for data-driving liquid crystal display |
| CN100361185C (en) * | 2001-11-10 | 2008-01-09 | Lg.菲利浦Lcd株式会社 | Device and method for data driving liquid crystal display |
| US7034797B2 (en) * | 2002-06-10 | 2006-04-25 | Seiko Epson Corporation | Drive circuit, electro-optical device and driving method thereof |
| WO2006090341A3 (en) * | 2005-02-25 | 2006-11-09 | Koninkl Philips Electronics Nv | Column electrode driving circuit and display device using it |
| CN100426362C (en) * | 2005-08-11 | 2008-10-15 | 奇景光电股份有限公司 | Driving circuit and method for driving display unit |
| US7903072B2 (en) | 2007-03-14 | 2011-03-08 | Epson Imaging Devices Corporation | Electro-optical device, driving circuit, and electronic apparatus for decreasing frame size |
| CN104766564A (en) * | 2015-04-24 | 2015-07-08 | 京东方科技集团股份有限公司 | Display panel and driving method and display device thereof |
| CN104766564B (en) * | 2015-04-24 | 2017-03-15 | 京东方科技集团股份有限公司 | A kind of display floater, its driving method and display device |
| US9786211B2 (en) | 2015-04-24 | 2017-10-10 | Boe Technology Group Co., Ltd. | Display panel, driving method and display apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH10319924A (en) | 1998-12-04 |
| DE19821914A1 (en) | 1998-11-19 |
| KR100229380B1 (en) | 1999-11-01 |
| GB9810599D0 (en) | 1998-07-15 |
| KR19980083732A (en) | 1998-12-05 |
| FR2763416A1 (en) | 1998-11-20 |
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| Date | Code | Title | Description |
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| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |