WO2005088592A1 - 表示装置と表示方法 - Google Patents
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- WO2005088592A1 WO2005088592A1 PCT/JP2005/004208 JP2005004208W WO2005088592A1 WO 2005088592 A1 WO2005088592 A1 WO 2005088592A1 JP 2005004208 W JP2005004208 W JP 2005004208W WO 2005088592 A1 WO2005088592 A1 WO 2005088592A1
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- Prior art keywords
- signal
- video signal
- gamma correction
- correction
- display device
- Prior art date
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- 238000000034 method Methods 0.000 title claims description 31
- 238000012937 correction Methods 0.000 claims abstract description 127
- 238000012545 processing Methods 0.000 claims description 20
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 6
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 3
- 239000000872 buffer Substances 0.000 description 3
- 230000004044 response Effects 0.000 description 3
- 241000124033 Salix Species 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 238000010894 electron beam technology Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 241001270131 Agaricus moelleri Species 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/14—Picture signal circuitry for video frequency region
- H04N5/20—Circuitry for controlling amplitude response
- H04N5/202—Gamma control
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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
-
- 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
- G09G3/2003—Display of colours
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/64—Circuits for processing colour signals
- H04N9/68—Circuits for processing colour signals for controlling the amplitude of colour signals, e.g. automatic chroma control circuits
- H04N9/69—Circuits for processing colour signals for controlling the amplitude of colour signals, e.g. automatic chroma control circuits for modifying the colour signals by 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
- G09G2320/06—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
- 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
- G09G3/22—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 using controlled light sources
Definitions
- the present invention relates to a display device such as a field 'emission' display, and in particular, divides a video signal composed of a plurality of color video signals into a plurality of regions for each color video signal,
- the present invention relates to a display device and a display method in which an appropriate gamma correction coefficient is determined for each area, gamma correction is performed for each color video signal, and each area is driven by a drive current having a different amplitude value.
- a matrix-driven image display device called a field "emission" display (FED: Field Emission Display) has become widespread.
- FED Field Emission Display
- a pulse width modulation method for modulating a pulse width of a drive current supplied to a display unit in accordance with the magnitude of a video signal
- a bias voltage application method for varying a current amplitude value is used in combination.
- Patent Document 1 Japanese Patent Application Laid-Open No. 2003-114638 discloses an image using a combined method of the pulse width modulation method and the bias voltage application method in order to improve the gradation of an image display device.
- a display device is shown.
- the device voltage e is set so that the drive current I is at regular intervals.
- the conventional device is a display device that uses a combined method of the above-described pulse width modulation method and bias voltage application method, and uses a look-up table for inverse gamma correction as shown in FIG. Perform inverse gamma correction.
- the input of the inverse gamma correction is 10 bits
- the output is 10 bits
- the input data will be reduced to 1024 gradations and the output data to 734 gradations.
- the present invention provides a display device using both a pulse width modulation method for modulating a pulse width of a drive current of a display unit and a bias voltage application method for varying an amplitude value, in which each color video signal of an input video signal is converted. It is an object of the present invention to provide a display device which divides each color image signal into a plurality of regions, determines an appropriate gamma correction coefficient for each color video signal and each region, and thereby gamma corrects each color video signal to display an image. And
- the present invention divides a first color signal constituting a given video signal into N regions according to the size, and uses a first coefficient unique to the first color signal that differs for each region to perform gamma control.
- a first gamma correction unit that performs correction and outputs a first correction signal; and a second color signal that is different from the first color signal that forms the video signal is divided into N areas according to the size.
- a second gamma correction unit that performs gamma correction using a second coefficient unique to the second color signal different from the first coefficient and outputs a second correction signal; and the first and second gamma correction units.
- a generation unit that generates a drive signal having a different amplitude value for each of the N regions in accordance with the first and second correction signals from the image processing unit, and an image that is generated in accordance with the drive signal from the generation unit.
- a display unit for displaying.
- an R video signal, a G video signal, and a B video signal that constitute a given video signal are divided into N regions according to the magnitude, and each region is divided into N regions.
- This is a display device that drives a display unit with drive signals having different amplitude values. That is, the video signal is divided into, for example, four regions according to the magnitude, the amplitude value of the drive signal is gradually increased in each region, and further, in each region, the amplitude value of the drive signal is made to correspond to the value of the video signal.
- the pulse width fine gradation expression is possible.
- R video signal, G video signal, and B video signal do not always have the same gradation characteristics, and each region has different gradation characteristics. Therefore, in the gamma correction unit according to the present invention, an optimum coefficient is obtained for each region for each color video signal, and a look-up table based on the coefficient for each region of each color video signal is generated. It performs inverse gamma correction for each area of the signal.
- the inverse gamma correction of the optimum value corresponding to each area of each color video signal is performed, so that the gradation characteristics particularly in a dark portion of the screen are improved as compared with the conventional case, and further, for example, the R video signal, the G video It is possible to obtain optimal gradation characteristics that fully consider the differences in the color characteristics of the signal and B video signal. As a result, for example, it is possible to express richly each color close to jet black, which is formed only by the shadow of a person's hair or a cloudy sky pattern.
- FIG. 1 is a block diagram showing an example of a configuration of a display device according to the present invention.
- FIG. 2 is a graph showing an example of a relationship between a driving current and a light emission luminance of a display device according to the present invention.
- FIG. 3 is a graph showing an example of an ideal type of inverse gamma correction to be performed by the display device according to the present invention.
- FIG. 4 is a diagram showing an example of a drive signal of a drive signal generator of the display device according to the present invention.
- FIG. 5 is a graph showing an example of a desirable relationship between an input signal X and luminance Y in the display device according to the present invention.
- FIG. 6 is a graph showing an example of a relationship between an element voltage and a drive current in a display device according to the present invention. It is.
- FIG. 7 is a graph showing an example of a relationship between a correction signal by gamma correction and light emission luminance in the display device according to the present invention.
- FIG. 8 is a graph showing an example of a relationship between an input signal and an output signal by the first gamma correction in the display device according to the present invention.
- FIG. 9 is a graph showing an example of a relationship between an output signal y of gamma correction and a light emission luminance Y in the display device according to the present invention.
- FIG. 10 is a graph showing an example of a relationship between an input signal and an output signal by the second gamma correction in the display device according to the present invention.
- FIG. 11 is a graph showing a relationship between a gray scale and a luminance signal Y in the display device according to the present invention.
- FIG. 12 is a graph showing an example of a relationship between an input signal and an output signal by gamma correction in the display device according to the present invention.
- FIG. 13 is a block diagram showing another example of the configuration of the display device according to the present invention.
- FIG. 14 is an example of a look-up table used in inverse gamma correction. BEST MODE FOR CARRYING OUT THE INVENTION
- FIG. 1 is a block diagram illustrating an example of the configuration of a display device according to the present invention
- FIG. 2 is a graph illustrating an example of the relationship between drive current and light emission luminance of the display device according to the present invention
- FIG. FIG. 4 is a graph showing an example of an ideal type of inverse gamma correction to be performed by the display device according to the present invention
- FIG. 4 is a diagram showing an example of a drive signal from a drive signal generator of the display device according to the present invention
- FIG. FIG. 5 is a graph showing an example of a desirable relationship between the input signal X and the luminance Y in the display device according to the present invention
- FIG. 6 is an example of a relationship between an element voltage and a drive current in the display device according to the present invention.
- FIG. 7 is a graph showing an example of a relationship between a correction signal by gamma correction and light emission luminance in the display device according to the present invention
- FIG. 8 is an input signal by first gamma correction in the display device according to the present invention.
- FIG. 10 is a graph showing an example of the relationship with the luminance Y, and FIG.
- Brightness YR1— A graph showing an example of a value calculated from a conversion formula described later using YR4, YG1-YG4, YB1-YB4,
- FIG. 11 is a graph showing a relationship between a gray scale and a luminance signal Y in the display device according to the present invention
- FIG. 12 is a graph showing an example of a relationship between an input signal and an output signal by gamma correction in the display device according to the present invention.
- a display device D includes a display panel 1 for displaying an image, a signal line driver 2 for supplying a drive signal to the display panel 1, and a scanning line for the display panel 1.
- a scanning line driver 3 for supplying a signal
- a video signal processing circuit 4 for supplying an inverse gamma-converted video signal to the scanning line driver
- an input circuit 5 for supplying a digitized video signal to the video signal processing circuit 4
- a timing generation circuit 6 that supplies an operation timing based on a video signal from the input circuit 5 to the scanning line driver 3, the video signal processing circuit 4, and the signal line driver 2.
- Each color display pixel is composed of three display pixels PX adjacent to each other in the horizontal direction.
- three display pixels PX each emit red (R), green (G), and blue (B) light emitted by a surface conduction electron-emitting device 11 and an electron beam emitted from the electron-emitting device 11. ) Phosphor 12.
- Each scanning line Y is used as a scanning electrode connected to the electron-emitting device 11 of the display pixel PX of the corresponding row
- each signal line X is used as a signal electrode connected to the electron-emitting device 11 of the display pixel PX of the corresponding column.
- the above-described signal line driver 2, scanning line driver 3, video signal processing circuit 4, input circuit 5, and timing generation circuit 6 are used as a drive circuit for the display panel 1, and are arranged around the display panel 1. Is done.
- the signal line driver 2 is connected to the signal lines X—X
- the scanning line driver 3 is connected to the scanning lines Y—Y.
- Input circuit 5 is an external signal source.
- the video signal processing circuit 4 performs digital signal processing on the video signal from the input circuit 5. Timing occurrence times
- the circuit 6 controls the operation timing of the signal line driver 2, the scanning line driver 3, and the video signal processing circuit 4 based on the synchronization signal. With this control, the scanning line driver 3 sequentially drives the scanning lines Y-Y using the scanning signal, and the signal line driver 2 scans each of the scanning lines Y-Y.
- the signal lines XX are driven by the voltage pulse type signal line drive signal.
- the video signal processing circuit 4 includes an AD conversion circuit 41 that converts an analog RGB video signal supplied from the input circuit 5 into a digital format in synchronization with a horizontal synchronization signal, and a digital signal converted here.
- the analog RGB video signal is converted into, for example, 10-bit grayscale data capable of displaying 1024 grayscales for each display pixel PX.
- the conversion table memory 42 stores 1024 10-bit conversion data assigned to all gradation values of the gradation data as a conversion table.
- the signal line driver 2 includes a line memory 20, a line memory 21, and a drive signal generation unit 22.
- the line memory 20 samples video signals for one horizontal line in synchronization with the clock CK1 supplied from the timing generation circuit 6 in each horizontal scanning period, and these video signals, that is, n pieces of grayscale data, are sampled in parallel.
- Output to The line memory 21 latches these gradation data in response to the latch pulse DL supplied from the timing generation circuit 6 with all gradation data output from the line memory 20, and the line memory 20 performs the sampling operation again.
- the grayscale data is held in one subsequent horizontal scanning period.
- the drive signal generator 22 generates n voltage pulses having pulse amplitudes and pulse widths corresponding to the grayscale data output in parallel from the line memory 21 as signal line drive signals.
- the drive signal generator 22 includes a counter 23, n pulse width modulation circuits 24, and n output buffers 25.
- the counter 23 has a 10-bit configuration, and is initialized in response to a reset signal RST supplied from the timing generation circuit 6 at the start of each horizontal scanning period, and supplied from the timing generation circuit 6 following the reset signal RST. Clock CK2 to be counted up Outputs 10-bit count data representing the video period with a time length of 1024 steps.
- Each pulse width modulation circuit 24 compares, for example, the corresponding gradation data supplied from the line memory 21 with the count data supplied from the counter 23, and outputs a pulse equal to the period until the count data reaches the gradation data.
- the comparator also outputs a voltage pulse having a width.
- Each output buffer 25 selects the element voltages VI, V2, V3, and V4 supplied externally based on the upper two bits of the gradation data supplied to the corresponding pulse width modulation circuit 24, and the pulse modulation circuit 24
- the configuration is such that the selection element voltage is output only during a period equal to the pulse width of the pulse voltage from.
- the signal line drive signal is a positive voltage having a pulse amplitude and a pulse width depending on the gradation value of the gradation data.
- the scanning line driver 3 shifts the vertical synchronizing signal every one horizontal scanning period and outputs the shift register 31 from one of the m output terminals, and a pulse from the m output terminals. And m output buffers 32 for outputting scan signals to scan lines Y-Y in response.
- This scanning signal is a negative voltage V supplied from the scanning voltage terminal, and one horizontal scanning period y on
- each electron-emitting device 11 a discharge occurs when the device voltage Vf between the electrodes composed of the signal line X and the scanning line Y exceeds a threshold, and the emitted electron beam excites the phosphor 12.
- the luminance of each display pixel PX is controlled by the drive current Ie flowing through the electron-emitting device 11 depending on the pulse width and pulse amplitude of the signal line drive signal.
- the scanning line driver 2 outputs a signal line driving signal having a signal waveform as shown in FIG. 4, for example. That is, a given video signal is divided into four regions according to the magnitude, and the display unit is driven by drive signals having different amplitude values VI to V4 for each region.
- the video signal is divided into four regions according to the size, for example, (A) to (D), and the amplitude values VI to V4 of the drive signal are gradually increased in each region.
- fine gradation expression is made possible by varying the pulse width corresponding to the value of the video signal.
- the pulse amplitude of the signal line drive signal is set to a voltage value such as the element voltage VI, and the pulse width is set to a time length in the range of 0 to 256 corresponding to the output gradation value.
- the input tone value is in the range of 257-512, as shown in FIG. 4B, the input tone value is converted into an output tone value of 512-769.
- the pulse width is set to a time length in the range of 0 to 256 corresponding to the output gradation value, and during that period, the pulse amplitude of the signal line drive signal is set to a voltage value equal to the element voltage V2, In the subsequent period (256), the noise amplitude is set to the device voltage VI.
- the pulse width is set to a time length in the range of 0 to 256 corresponding to the output gradation value, and during this period, the pulse amplitude of the signal line drive signal is set to a voltage value equal to the element voltage V3. During the subsequent period (one 256), the nore amplitude is set to the element voltage V2.
- the pulse width is set to a time length in the range of 0 to 256 corresponding to the output gradation value, and during that period, the pulse amplitude of the signal line drive signal is set to a voltage value equal to the element voltage V4. In the subsequent period (256), the noise amplitude is set to the element voltage V3.
- FIG. 9 is a graph showing the relationship between each output signal y and each luminance signal Y for each RGB (output signal y power at 512, 768, 1024).
- Fig. 11 Continuous Willow of G Signal " As shown in the graph showing the relationship between the output signal y of the G video signal and the luminance signal Y (where the broken line is a straight line), for example, in a display device such as a field emission display, It is known that the saturation characteristics of the three color phosphors used are different for each color, and the relationship between the pulse width and the luminance ⁇ is determined between the R video signal, G video signal, and ⁇ video signal. Do not necessarily indicate the same relationship. Furthermore, it can be seen that the characteristics are different for each region.
- a 10-bit input signal X enters the gamma correction unit 40, and the output signal thereof is output.
- the signal y is also 10 bits.
- the normalized luminance ⁇ of the display unit 1 is set as an example.
- the image signal is obtained by supplying a video signal to a display device and actually measuring light from the phosphor 12.
- a look-up table of a correction table satisfying the following relational expression is provided, for example, for each of the R video signal, the G video signal, and the ⁇ ⁇ video signal, and further for each of the above-described regions. It is generated and stored in the storage area of the gamma correction unit 40 for each color signal and each area. Then, by using these lookup tables, the video signal is corrected to a state close to the state shown in FIG. 5 described above.
- the luminance Y in the correction signal yn is as shown in the graph of FIG. 7, and the relationship between the luminance Y and the gamma correction output value y is
- the gamma correction processing is divided into a case where the luminance change of the panel is not linear and a case where the luminance change of the panel is linear, as described below. Since the processing is performed, for example, it is also preferable to perform different processing as described below, assuming that YR is linear and YG and YB are not linear.
- the video signal is divided into N regions according to the magnitude, and the video signal is supplied to the gamma correction unit in each region n.
- the input signal of the video signal is x
- the output signal from the gamma correction unit is y
- the luminance for each RGB of the display unit is YR, YG, YB
- yR ⁇ (yy) / (YR-YR) ⁇ (x / K) 7 + (YR -y — y .YR) / (YR ⁇ YR nn— 1 nn— 1 nn— 1 nn— 1 nn— 1 n
- yG ⁇ (y -y) / (YG— YG) ⁇ ⁇ (x / K) 7 + (YG -y — y ⁇ YG) / (YG— Y nn— 1 nn— 1 nn— 1 nn— 1 nn— 1 n
- yB ⁇ (y -y) / (YB-YB) ⁇ X (x / K) 7 + (YB -y-y ⁇ YB) / (YB-Y nn-1 nn-1 nn-1 nn-1 nn-1 nn-1 nn-1 n
- Look-up table in area 4 of B video signal Each will be required. Therefore, for example, it is conceivable that only the third region of the R video signal uses a linear lookup table, and the other lookup table of each region of the video signal uses a non-linear lookup table. As described above, the gamma correction unit 40 for each color signal and for each area uses these look-up tables to perform gamma correction on each color signal X for each area, and outputs an output signal y.
- FIG. 11 shows an example of a change in luminance of the actually measured G video signal.
- the luminance changes almost linearly
- YG aG ⁇ ln (y) + b G
- the R video signal and the B video signal also vary with different coefficients aRaB.
- FIG. 12 shows, based on the characteristics of FIG.
- a look-up table is created for each color signal and for each area, and the luminance change due to the relationship between the input signal and the output signal is measured based on the drive signal on which gamma correction has been performed.
- the driving current Ie during the operation of the display device is replaced with the above method of operating the display device in a factory or the like and measuring the luminance and substituting the measured value of the luminance Y into the above equation.
- the value of the expression is autonomously calculated inside the display device using the expression, and the lookup table is calculated. That is, for example, in a field emission display, the luminance Y is almost directly proportional to the driving current. Therefore, the driving current Ie can be used instead of the measured value of the luminance Y. It becomes.
- the AZD conversion unit 52 that has received the drive current from the scanning line driver 3 supplies the drive current to the microcomputer unit 51 as a digital signal.
- the microcomputer 51 supplies a digital signal indicating the value of the drive current to the gamma correction unit 40 for each color signal and each area.
- the gamma correction unit 40 for each region substitutes the digital signal based on the magnitude of the driving current into the above-described equation (2) instead of the luminance Y, and assigns a value for each color signal.
- a look-up table is generated for each color signal and each area.
- the gamma correction unit 40 for each color signal performs gamma correction of video information for each color signal region using the look-up table obtained by this generation operation.
- the optimal gamma correction is always performed because the gamma correction using the optimal look-up table according to the drive current is performed with the updated value. Accordingly, it is possible to provide a display device capable of stably displaying an image with high image quality.
- the look-up table for gamma correction in this display device is updated, but is performed at set predetermined times (once a year, once a month, once a week, etc.) in the steady mode. Is preferred. Further, it is preferable that the display device be started at the time of power-on. It is also preferable that the display device is turned off by turning off the power. It is also preferable that the measurement mode is manually performed by calling the measurement mode.
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- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
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Abstract
Description
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Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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EP05720479A EP1727113A1 (en) | 2004-03-15 | 2005-03-10 | Display and displaying method |
US11/514,993 US20070002182A1 (en) | 2004-03-15 | 2006-09-05 | Display device and display method |
Applications Claiming Priority (2)
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JP2004073029A JP2005260849A (ja) | 2004-03-15 | 2004-03-15 | 表示装置と表示方法 |
JP2004-073029 | 2004-03-15 |
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US11/514,993 Continuation US20070002182A1 (en) | 2004-03-15 | 2006-09-05 | Display device and display method |
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US (1) | US20070002182A1 (ja) |
EP (1) | EP1727113A1 (ja) |
JP (1) | JP2005260849A (ja) |
KR (1) | KR20060127193A (ja) |
CN (1) | CN1934607A (ja) |
TW (1) | TWI266543B (ja) |
WO (1) | WO2005088592A1 (ja) |
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JP2008164749A (ja) * | 2006-12-27 | 2008-07-17 | Mitsubishi Electric Corp | 画像表示装置および画像表示方法 |
US20080252650A1 (en) * | 2007-04-10 | 2008-10-16 | Do-Hyung Ryu | Organic light emitting display, driver system therfor and driving method thereof |
KR100970883B1 (ko) * | 2008-10-08 | 2010-07-20 | 한국과학기술원 | 영역 특성을 고려한 영상 보정 장치 및 그 방법 |
JP2011017997A (ja) * | 2009-07-10 | 2011-01-27 | Sony Corp | 自発光表示装置及び自発光表示装置の駆動方法 |
KR20130039264A (ko) * | 2011-10-11 | 2013-04-19 | 삼성디스플레이 주식회사 | 평면 영상 및 입체 영상을 표시하는 표시 장치 |
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WO2018186613A1 (ko) * | 2017-04-07 | 2018-10-11 | 이승원 | 보정기능을 포함하는 드라이버 ic 장치 |
CN112365839B (zh) | 2020-11-24 | 2022-04-12 | 昆山国显光电有限公司 | 伽马曲线的调节方法、装置以及显示装置 |
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JPH075836A (ja) * | 1993-04-05 | 1995-01-10 | Canon Inc | 画像形成装置及び画像形成方法 |
JPH0736405A (ja) * | 1993-07-19 | 1995-02-07 | Pioneer Electron Corp | 表示装置の階調補正方式 |
JP2002311885A (ja) * | 2001-04-13 | 2002-10-25 | Canon Inc | 画像表示装置の駆動回路、画像表示装置、画像表示装置の駆動方法 |
JP2003114638A (ja) * | 2001-10-04 | 2003-04-18 | Toshiba Corp | 電子ビーム発生装置 |
JP2003195800A (ja) * | 2001-12-27 | 2003-07-09 | Toshiba Corp | 電子ビーム発生装置 |
JP2004347629A (ja) * | 2003-05-19 | 2004-12-09 | Canon Inc | 画像表示装置 |
-
2004
- 2004-03-15 JP JP2004073029A patent/JP2005260849A/ja not_active Abandoned
-
2005
- 2005-03-10 WO PCT/JP2005/004208 patent/WO2005088592A1/ja not_active Application Discontinuation
- 2005-03-10 CN CNA2005800084881A patent/CN1934607A/zh active Pending
- 2005-03-10 KR KR1020067018838A patent/KR20060127193A/ko active IP Right Grant
- 2005-03-10 EP EP05720479A patent/EP1727113A1/en not_active Withdrawn
- 2005-03-15 TW TW094107913A patent/TWI266543B/zh not_active IP Right Cessation
-
2006
- 2006-09-05 US US11/514,993 patent/US20070002182A1/en not_active Abandoned
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH075836A (ja) * | 1993-04-05 | 1995-01-10 | Canon Inc | 画像形成装置及び画像形成方法 |
JPH0736405A (ja) * | 1993-07-19 | 1995-02-07 | Pioneer Electron Corp | 表示装置の階調補正方式 |
JP2002311885A (ja) * | 2001-04-13 | 2002-10-25 | Canon Inc | 画像表示装置の駆動回路、画像表示装置、画像表示装置の駆動方法 |
JP2003114638A (ja) * | 2001-10-04 | 2003-04-18 | Toshiba Corp | 電子ビーム発生装置 |
JP2003195800A (ja) * | 2001-12-27 | 2003-07-09 | Toshiba Corp | 電子ビーム発生装置 |
JP2004347629A (ja) * | 2003-05-19 | 2004-12-09 | Canon Inc | 画像表示装置 |
Also Published As
Publication number | Publication date |
---|---|
KR20060127193A (ko) | 2006-12-11 |
CN1934607A (zh) | 2007-03-21 |
TW200536402A (en) | 2005-11-01 |
US20070002182A1 (en) | 2007-01-04 |
TWI266543B (en) | 2006-11-11 |
EP1727113A1 (en) | 2006-11-29 |
JP2005260849A (ja) | 2005-09-22 |
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