EP1068608B1 - Aktivmatrix-flüssigkristallanzeige - Google Patents

Aktivmatrix-flüssigkristallanzeige Download PDF

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Publication number
EP1068608B1
EP1068608B1 EP99917759A EP99917759A EP1068608B1 EP 1068608 B1 EP1068608 B1 EP 1068608B1 EP 99917759 A EP99917759 A EP 99917759A EP 99917759 A EP99917759 A EP 99917759A EP 1068608 B1 EP1068608 B1 EP 1068608B1
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EP
European Patent Office
Prior art keywords
liquid crystal
crystal display
value signals
scale value
grey
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP99917759A
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German (de)
English (en)
French (fr)
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EP1068608A1 (de
Inventor
Michael März
Klaus Wammes
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Siemens AG
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Siemens AG
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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • G09F9/35—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being liquid crystals
    • 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
    • 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
    • G09G3/001—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes using specific devices not provided for in groups G09G3/02 - G09G3/36, e.g. using an intermediate record carrier such as a film slide; Projection systems; Display of non-alphanumerical information, solely or in combination with alphanumerical information, e.g. digital display on projected diapositive as background
    • G09G3/003—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes using specific devices not provided for in groups G09G3/02 - G09G3/36, e.g. using an intermediate record carrier such as a film slide; Projection systems; Display of non-alphanumerical information, solely or in combination with alphanumerical information, e.g. digital display on projected diapositive as background to produce spatial visual effects
    • 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
    • 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
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/028—Improving the quality of display appearance by changing the viewing angle properties, e.g. widening the viewing angle, adapting the viewing angle to the view direction
    • 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
    • G09G2320/06—Adjustment of display parameters
    • 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
    • G09G2320/06—Adjustment of display parameters
    • G09G2320/0673—Adjustment of display parameters for control of gamma adjustment, e.g. selecting another gamma curve
    • 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
    • G09G2320/06—Adjustment of display parameters
    • G09G2320/068—Adjustment of display parameters for control of viewing angle adjustment
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2380/00—Specific applications
    • G09G2380/10—Automotive applications
    • 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
    • G09G3/2007—Display of intermediate tones
    • G09G3/2011—Display of intermediate tones by amplitude modulation
    • 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
    • G09G3/2007—Display of intermediate tones
    • G09G3/2014—Display of intermediate tones by modulation of the duration of a single pulse during which the logic level remains constant
    • 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
    • G09G3/3696—Generation of voltages supplied to electrode drivers

Definitions

  • the invention relates to an active matrix liquid crystal display, at the pixels formed by liquid crystal cells are arranged in rows and columns of a matrix, the liquid crystal cells on each side on one Reference potential lie and on the other side above them individually assigned controllable switches with columns Column electrodes are connected, the switch on the control side are connected line by line to line electrodes which Column electrodes on a different gray scale signal for the column controller generating the different columns are connected and at which the row electrodes on a switch-on signals for the switches in the different line generating line control device are connected.
  • rows and columns are here as interchangeable below.
  • Such an active matrix liquid crystal display because of the Controllable, usually designed as thin film transistors Switch also as TFT-LCD (Thin Film Transistor Liquid Crystal Display) is from US-A-4 635 127 known.
  • TFT-LCD Thin Film Transistor Liquid Crystal Display
  • gray value signals are applied to the column electrodes represent the gray values of the pixels of one line each; by means of a switch-on signal on one of the row electrodes the gray scale signals to the liquid crystal cells of the relevant line.
  • All rows are displayed one after the other in quick succession Liquid crystal cells activated.
  • the optical transparency each individual liquid crystal cell is dependent of the voltage across the liquid crystal cell so that with backlighting of the active matrix liquid crystal display the desired image is displayed.
  • the Liquid crystal cells operated in a voltage range, in which is the otherwise typically non-linear dependency between the transparency of the liquid crystal cells and the voltage is approximately linear.
  • Liquid crystal cells are used to display color images alternating columns of red, green and blue color filter strips upstream or downstream, with each three adjacent ones behind or in front of it in a row Liquid crystal cells with regard to their control a color image point consisting of three sub-pixels are summarized.
  • Non-linearities between the transparency of the liquid crystal cells and the tension on them is particularly disturbing to make noticable.
  • the one that depends on the voltage applied Transparency of every single liquid crystal cell is due to the voltage-dependent optical rotation the liquid crystals depending on the viewing angle, so that at a determined voltage on the liquid crystal cell of the shown Pixels differ depending on the viewer's perspective is bright.
  • An active matrix liquid crystal display which are listed in the preamble of claim 1 has technical features, is in European patent application EP 0 514 033 A2 described.
  • the invention is based on the object, the voltage range, within which the liquid crystal cells one Active matrix liquid crystal display without adulteration Image playback can be operated, enlarged and in further the possible uses of such an active matrix liquid crystal display to increase.
  • the object is defined by that in claim 1 Active matrix liquid crystal display solved.
  • the active matrix liquid crystal display according to the invention can operate within voltage ranges, in which the transparency of the liquid crystal cells is typically nonlinear depending on the voltage applied to them changes without falsification the image reproduction comes. So there is more advantageous Way the opportunity through a largely unlimited Choice of the voltage range optimal contrast ratios for certain viewing angles and the area within which the transparency of the Changed liquid crystal cells to display gray values will better adapt to the backlight.
  • the correction device can be the column control device may be assigned, the gray value signals generated by the latter being assigned distorted prior to delivery to the column electrodes.
  • the Signal distortion can be analog or digital, depending according to whether the gray value signals in analog or digital Form.
  • the information about the typical dependency the optical transparency of the liquid crystal cells from the applied voltage can be used, for example, as a characteristic curve or in the form of digital table values in a memory available.
  • Active matrix liquid crystal display is the correction device assigned to the line control device, the Switch-on signals for the switches by controlling the switch-on and switch off times in the sense of the distortion of the forwarded the switches to the liquid crystal cells Grayscale signals changed.
  • the integrating Behavior of both the liquid crystal cells, the individual Form capacities, as well as used by the human eye, by changing the ratio between the periodically successive switch-on and switch-off times one controlled with a certain gray value signal Liquid crystal cell of the shown or perceived Gray value is changed accordingly.
  • Active matrix liquid crystal display has this one Adjustment device for changeable adjustment of the potential difference between the potential level of the gray value signals and the reference potential for at least part of the Columns on.
  • Adjustment device for changeable adjustment of the potential difference between the potential level of the gray value signals and the reference potential for at least part of the Columns on.
  • the setting device can be changed Setting the reference potential.
  • the adjustment device can be changed Setting the potential levels of the gray value signals be formed, the analog gray value signals for example a variable offset voltage or the digital A changeable offset value is superimposed on the gray value signals becomes.
  • the column control device the gray value signals from at least two different ones Images nested one after the other outputs the column electrodes and that the adjusting device for the different images one after the other different Potential differences.
  • Active matrix liquid crystal display is provided that the column controller the gray scale signals from at least two different images at the same time gives nested columns to the column electrodes and that the setting device different potential differences assigned to the different images Column electrodes.
  • the temporal nesting and the spatial nesting when playing different pictures can also can be combined with each other.
  • the vehicle driver traffic information in a motor vehicle display and at the same time the passenger To present video film.
  • the passenger To present video film In the same way, for example sitting next to each other in railroad cars or airplanes Passengers on a single active matrix liquid crystal display different pictures (videos) shown become.
  • FIG. 1 shows an example of the structure of an active matrix liquid crystal display without the associated control electronics.
  • a lower glass plate 1 carries one on its underside Polarization film 2.
  • On the top of the glass plate 1 are translucent pixel electrodes in a row-column matrix 3 trained, column by column individually assigned controllable and designed as thin film transistors Switches 4 are connected to column electrodes 5.
  • the controllable switches 4 are with their control connections connected in rows with row electrodes 6.
  • Each of the translucent Pixel electrodes 3 together with a all pixel electrodes 3 common counter electrode 7 and an underlying liquid crystal layer 8 each controllable liquid crystal cell 9, resulting in a row and columnar arrangement of the liquid crystal cells 9 results.
  • the position with the liquid crystal cells 9 is with a top glass plate 10 covered, on which another polarizing film 11 is applied.
  • For displaying color images are between the liquid crystal cells 9 and upper glass plate 11 alternately red, green and Blue color filter strips 12, 13 and 14 arranged.
  • Backlighting is used for image reproduction 15 light 16 through the matrix with the liquid crystal cells 9 blasted and by this depending on the control over the lines and Column electrodes 6 and 5 with different brightness connected through.
  • the light 16 is initially from the lower polarizing film 2 (polarizer) polarized.
  • the individual liquid crystal cells 9 become the liquid crystals depending on the electrical voltage between the respective pixel electrode 3 and the counter electrode 7 twisted, so that through the liquid crystals polarized light passing through in its polarization direction is rotated accordingly.
  • This twisting of the The direction of polarization leads in the upper polarization film 11 (analyzer) to one depending on the degree of rotation more or less severe decrease in brightness of the emerging Light.
  • the brightness H of the light emerging from the active matrix liquid crystal display and thus the contrast of the respective image shown is dependent on the viewing angle ⁇ . This dependence also varies with the voltage U, here z. B. three different voltages U 1 , U 2 and U 3 , on the respective liquid crystal cell 9.
  • Figure 3 shows qualitatively the typical non-linear dependency between the brightness H or equivalent to the optical transparency of the liquid crystal cells 9 and voltage U applied to them in each case the liquid crystal cells 9 are operated in a voltage range, in which this dependency is largely linear.
  • the nonlinear areas as explained below will distort the image.
  • It three pixels X, Y and Z are considered as examples, the simultaneously from three different liquid crystal cells 9 are generated, the pixel Z by an amount ⁇ H brighter than the pixel Y and this in turn by the same amount ⁇ H is lighter than the pixel X.
  • FIG. 4 shows an embodiment of the active matrix liquid crystal display according to the invention in the form of a block diagram.
  • the liquid crystal cells 9 shown here as capacitors are arranged in rows and columns.
  • the liquid crystal cells 9 are connected in columns to the column electrodes 5 via the controllable switches 4 assigned to them individually.
  • the switches 4 are connected on the control side to the row electrodes 6 in rows.
  • the common electrode 7 common to all liquid crystal cells 9 is at a reference potential V 0 .
  • the column electrodes 5 are on a column control device 18 connected, the image signals supplied by it 19 different gray value signals 20 at the same time for the different columns of liquid crystal cells 9 and different gray value signals 20 in time for the liquid crystal cells 9 in the different rows generated and applied to the column electrodes 5.
  • a line controller 21 controls the row electrodes 6 controllable switch 4 in such a way that the gray value signals 20 on the column electrodes 5 one after the other Rows are switched through with the liquid crystal cells 9.
  • One of the two control devices 18 and 21 associated synchronization device 22 for synchronization the successive gray value signals 20 for the different rows with the liquid crystal cells 9 and the switch-on signals 23 for the individual lines.
  • the are behind the different color filter strips 12, 13 and 14 ( Figure 1) lying three adjacent liquid crystal cells 9 with respect their control to one consisting of three sub-pixels Color point summarized.
  • the potential difference between the reference potential V 0 at the counter electrode 7 and the potential level of the gray value signals 20 which are switched through to the pixel electrodes 3 adjustable is used which, depending on a z. B. manually generated by an operating element 25 setting signal 26 changes the reference potential V 0 .
  • the potential level of the gray value signals 20 can also be changed by superimposing a variable offset voltage or, in the case of digital gray value signals, a variable offset value.
  • the column control device 18 contains a correction device 28, to which the setting potential 24 communicates the respectively set reference potential V 0 .
  • the gray value signals 20 ' before they are applied to the column electrodes 5, on the basis of information about the typical dependence shown in FIG. 3 between the optical transparency of the liquid crystal cells 9 and the voltage applied to them and as a function of the potential difference between the gray value signals 20 'and the reference potential V 0 distorted in such a way that there is an at least approximately linear relationship between the optical transparency of the liquid crystal cells 9 and the undistorted gray value signals 20'.
  • FIG. 5 again shows the typically non-linear dependency between the brightness H or synonymous with the optical transparency of the liquid crystal cells 9 and the voltage U 20 applied to them, which corresponds to the potential difference between the gray scale signals 20 and the reference potential V 0 .
  • a characteristic curve K is shown, according to which the undistorted gray value signals 20 ′ with the voltage U 20 ′ are converted into the distorted gray value signals 20 with the voltage U 20 in the correction device 28. The conversion can also take place digitally, in which case the characteristic curve K is present in the form of a value table in a memory (not shown here).
  • the embodiment shown in Figure 6 of the invention Active matrix liquid crystal display differs from that according to FIG. 4 in that the correction device 29 Is or is part of the line control device 21 assigned.
  • the switch-on signals 23 for the controllable switch 4 by control the on and off times in terms of distortion that of the switches 4 to the liquid crystal cells 9 switched through gray value signals 20 changed.
  • the control of the switch-on and switch-off times can take place on the basis of a characteristic curve as shown in FIG is shown.
  • the active matrix liquid crystal display shown in Figures 4 or 6 30 via a controllable switching device 31, which is part of the column control device 18, Image signals 32 and 33 from two different image signal sources 34 and 35 fed.
  • the switching device 31 is from an adjusting device 36 with a periodically changing one Switching signal 37 controlled.
  • the Adjustment device 36 of the counter electrode 7 of the active matrix liquid crystal display 30 via a signal connection 38 two reference potentials alternating in synchronism with the switching signal 37 to.
  • the due to the image signals 32 and 33 of the Active matrix liquid crystal display 30 produced images 39 and 40 are therefore separated from each other in different Viewing angle ranges shown.
  • FIG. 9 In the alternative embodiment shown in Figure 9 become the active matrix liquid crystal display 30 different image signals 32 and 33 of the image signal sources 34 and 35 fed via a signal conditioning device 41, which is part of the column control device 18.
  • the signal processing device 41 interleaves the image signals 32 and 33 in columns, so that adjacent to each other Column electrodes 5 belonging to different images Grayscale signals 20 are supplied.
  • an adjusting device 42 two different offset voltages or offset values 43 and 44 and carries these the Active matrix liquid crystal display 30 too, where they are columnar nested the given to the column electrodes 5 Gray value signals 20 are superimposed.
  • the due to the Image signals 32 and 33 from the active matrix liquid crystal display 30 generated images 45 and 46 are therefore columns nested in different viewing angles shown.
  • Figure 10 shows an embodiment in which a plurality of image signal sources 47, 48 and 49 image signals 50, 51 and 52 from different views of a three-dimensional object deliver.
  • the image signals 50, 51 and 52 become the active matrix liquid crystal display 30 via one of an adjuster 53 controlled switching device 54 supplied.
  • the Adjustment device 53 different reference potentials in stages for the counter electrode 7 of the active matrix liquid crystal display Set 30, using the switching device 54 each to the active matrix liquid crystal display 30 switched image signals 50, 51 and 52 each a reference potential for the counter electrode 7 of the active matrix liquid crystal display 30 is assigned. This ensures that of the active matrix liquid crystal display 30 different images 56, 57 and 58, the three-dimensional Display object in different views for different viewing angle areas are generated so that in this way a three-dimensional representation of the object he follows.
  • Figure 11 shows an example of the installation of the Active matrix liquid crystal display 59 in a vehicle, for example in the middle in front of the driver's seat 60 and the passenger's seat 61.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Liquid Crystal Display Device Control (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Liquid Crystal (AREA)
EP99917759A 1998-03-03 1999-03-02 Aktivmatrix-flüssigkristallanzeige Expired - Lifetime EP1068608B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19808982A DE19808982A1 (de) 1998-03-03 1998-03-03 Aktivmatrix-Flüssigkristallanzeige
DE19808982 1998-03-03
PCT/DE1999/000548 WO1999045526A1 (de) 1998-03-03 1999-03-02 Aktivmatrix-flüssigkristallanzeige

Publications (2)

Publication Number Publication Date
EP1068608A1 EP1068608A1 (de) 2001-01-17
EP1068608B1 true EP1068608B1 (de) 2003-05-14

Family

ID=7859533

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99917759A Expired - Lifetime EP1068608B1 (de) 1998-03-03 1999-03-02 Aktivmatrix-flüssigkristallanzeige

Country Status (6)

Country Link
US (1) US6593904B1 (ko)
EP (1) EP1068608B1 (ko)
JP (1) JP2002506240A (ko)
KR (1) KR100604704B1 (ko)
DE (2) DE19808982A1 (ko)
WO (1) WO1999045526A1 (ko)

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DE19808982A1 (de) 1999-09-09
KR100604704B1 (ko) 2006-07-28
US6593904B1 (en) 2003-07-15
KR20010041514A (ko) 2001-05-25
EP1068608A1 (de) 2001-01-17
JP2002506240A (ja) 2002-02-26
WO1999045526A1 (de) 1999-09-10

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