WO2010125840A1 - 表示装置 - Google Patents
表示装置 Download PDFInfo
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- WO2010125840A1 WO2010125840A1 PCT/JP2010/051872 JP2010051872W WO2010125840A1 WO 2010125840 A1 WO2010125840 A1 WO 2010125840A1 JP 2010051872 W JP2010051872 W JP 2010051872W WO 2010125840 A1 WO2010125840 A1 WO 2010125840A1
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- WIPO (PCT)
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- liquid crystal
- image
- video signal
- display device
- gradation
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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
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133526—Lenses, e.g. microlenses or Fresnel lenses
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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
- G09G2300/00—Aspects of the constitution of display devices
- G09G2300/02—Composition of display devices
- G09G2300/026—Video wall, i.e. juxtaposition of a plurality of screens to create a display screen of bigger dimensions
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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
- G09G2320/0233—Improving the luminance or brightness uniformity across the screen
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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
- G09G2320/0242—Compensation of deficiencies in the appearance of colours
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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
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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
- G09G2320/0285—Improving the quality of display appearance using tables for spatial correction of display data
Definitions
- the present invention relates to a display device, and more particularly to a display device including a seamless lens.
- liquid crystal display devices have been widely used in liquid crystal televisions, monitors, mobile phones and the like as flat panel displays having features such as thinness and light weight compared to conventional cathode ray tubes.
- a liquid crystal display device a plurality of liquid crystal panels are used.
- a display operation is performed by supplying a voltage signal corresponding to the gradation value to be displayed to each of the plurality of pixels, so that the display is performed on the display surface of the liquid crystal panel. It has become.
- unevenness may occur on the screen when the display brightness on the screen is locally darker or brighter than the desired brightness.
- unevenness is caused by variation in the thickness of the liquid crystal display cell, variation in the thickness of the electrode pattern, and the like in the liquid crystal display device.
- it is necessary to devise correction for luminance unevenness of an image displayed on the liquid crystal panel.
- the luminance unevenness of the image depends on the image data to be displayed, and one such unevenness is crosstalk. As shown in FIG. 11, when the specific pattern 16 is partially displayed in the display area 15 of the liquid crystal panel, the crosstalk is caused by the pattern 16 in the upper and lower areas 17 or the left and right areas 18 of the pattern. A change in luminance occurs.
- the periphery of the pattern 16 is to be displayed with uniform brightness (uniform gradation), uneven brightness unevenness appears.
- the luminance change that occurs in the upper and lower portions of the pattern 16 is called vertical crosstalk, and the luminance change that occurs in the left and right portions is called horizontal crosstalk.
- the cause of lateral crosstalk is the fluctuation of the common electrode potential due to capacitive coupling between the data bus line and the common electrode.
- the common electrode is a common electrode that extends over the entire display area. There is a liquid crystal layer between the data bus line and the common electrode, which causes capacitive coupling.
- the cause of vertical crosstalk is a change in pixel potential due to capacitive coupling between the data bus line and the pixel electrode.
- a parasitic capacitance between the drain and the source of the thin film transistor exists between the data bus line and the pixel electrode.
- an object of the present invention is to provide a display device that can reduce color unevenness due to viewing angle characteristics of a curved portion of a seamless lens.
- a display device is a display device in which a seamless lens is provided in front of a display surface, and a video signal input unit that inputs a video signal, and the video signal input unit includes An image conversion unit that converts a display image corresponding to the curve portion of the seamless lens among the display images obtained from the input video signal for each horizontal line is provided.
- the image conversion unit further includes a gradation table for storing the input gradation and the output gradation of the video signal indicated by the display image corresponding to the curved portion of the seamless lens in association with each other, With reference to the gradation table, the display image corresponding to the curve portion of the seamless lens is converted for each horizontal line.
- the display device may further include an RGB gradation table that stores the input RGB gradation of the video signal indicated by the display image corresponding to the curved portion of the seamless lens and the output RGB gradation in association with each other, and The image conversion unit converts the display image corresponding to the curve portion of the seamless lens for each horizontal line with reference to the RGB gradation table.
- the image conversion unit performs image conversion in which a display image corresponding to the curve portion of the seamless lens is thinned out by a horizontal line and compressed.
- the image indicated by the video signal corresponding to the curved portion of the seamless lens can be compressed, it is possible to provide a display device that can reduce color unevenness due to the viewing angle characteristics of the curved portion of the seamless lens.
- the display device is preferably a liquid crystal display device.
- the present invention it is possible to provide a display device capable of reducing color unevenness due to the viewing angle characteristics of the curved portion of the seamless lens.
- FIG. 1 Schematic which shows the liquid crystal display device which concerns on embodiment of this invention.
- Sectional drawing which shows the liquid crystal display device which concerns on embodiment of this invention
- the figure for demonstrating the display apparatus which provided the seamless lens Diagram showing the viewing angle characteristics of the curved part of the seamless lens 1 is a block diagram showing an overall configuration of a liquid crystal display device according to Embodiment 1 of the present invention.
- the figure which shows an example of a gradation table Flow chart showing operation of gradation correction processing The block diagram which shows the whole structure of the liquid crystal display device which concerns on Embodiment 2 of this invention.
- the block diagram which shows the whole structure of the liquid crystal display device which concerns on Embodiment 3 of this invention.
- FIG. 1A is a schematic diagram illustrating a liquid crystal display device according to Embodiment 1 of the present invention
- FIG. 1B is a cross-sectional view illustrating the liquid crystal display device according to Embodiment 1 of the present invention.
- the liquid crystal display device 100 according to the first embodiment displays an image using a liquid crystal panel 110 that is a display unit, a seamless lens 200 provided on the front surface of the liquid crystal panel 110, and the liquid crystal panel 110. Therefore, a backlight (not shown) which is an illumination device for irradiating necessary transmitted light is provided.
- the edge of the seamless lens provided in front of the display surface of the liquid crystal panel forms a curved surface 200a.
- the curved portion 200a of the seamless lens is provided on the frame 200b of the liquid crystal panel 110. Thereby, an image is also displayed on the frame portion.
- color unevenness may occur.
- the cause of this color unevenness is the viewing angle characteristics of the curved portion 200a at the edge of the seamless lens.
- FIG. 1C the portion where the surface of the seamless lens is not curved is different from the curved portion in the optical path length of the light beam, so that the viewing angle characteristic as shown in FIG. 1D is obtained.
- a curved portion having a curved surface can be called a lens portion, and a portion having a flat surface can be called a non-lens portion. Note that an image display circuit that performs signal processing for image display, a control circuit for adjusting the color and brightness of each part of the backlight as an active backlight, a drive circuit, and the like are not shown in FIG. is doing.
- the liquid crystal panel 110 is a transmissive display element that displays an image by controlling the amount of transmitted light that passes through a pixel.
- the type of the liquid crystal panel 110 is not limited as long as multi-tone image display is possible. It does not matter whether it is an active matrix type using a switching element or a simple matrix type.
- liquid crystal panels of various display modes such as a vertical alignment type VA mode type, an IPS type, and an OCB type can be used.
- a conventionally well-known liquid crystal panel 110 can be used as it is. Therefore, detailed description using the drawings is omitted, but a liquid crystal layer (not shown) and the liquid crystal layer are sandwiched. A pair of transparent substrates (not shown) and a pair of polarizing plates (not shown) provided on the respective outer surfaces of the transparent substrate (not shown) are provided.
- the liquid crystal panel 110 is provided with a driver circuit for driving the liquid crystal panel 110 and is connected to a drive circuit as a display device via a flexible printed circuit board or the like.
- the liquid crystal panel 110 is an active matrix type liquid crystal panel, and drives the liquid crystal layer in units of pixels by supplying scanning signals and data signals to scanning lines and data lines arranged in a matrix. It is configured to be possible. That is, each pixel has a data signal written from the data line to the pixel electrode when a switching element (TFT) provided near each intersection of the scanning line and the data line is turned on by the scanning line signal. As the alignment state of the liquid crystal molecules changes according to the potential level, gradation display according to the data signal is performed.
- TFT switching element
- the polarization state of light incident from the backlight through the polarizing plate is modulated by the liquid crystal layer, and the amount of light that passes through the polarizing plate and exits to the supervisor side is controlled. As a result, a desired image is displayed.
- the backlight has a plurality of light sources (not shown) having LEDs as light emitting elements arranged on the bottom of a bottomed frame-like chassis (not shown) made of metal or resin.
- each of the light sources has one LED of three colors of R (red), G (green), and B (blue).
- the irradiation light from the backlight is applied to the irradiation surface which is the back side surface of the liquid crystal panel 110.
- the backlight of the liquid crystal display device controls the color and brightness of the irradiation light emitted from each light source based on the display image displayed on the liquid crystal panel 110, so that the liquid crystal panel 110.
- An active backlight system is employed in which the color and brightness of the light emitted from the backlight irradiated on the back side of the LED are changed in each part.
- FIG. 2 is a block diagram showing the overall configuration of the liquid crystal display device 100 according to the first embodiment. As shown in FIG. 2, an image signal and a light source control signal are generated by the video signal processing circuit 120 based on the input video signal.
- the light source control signal is a signal for controlling the color and brightness of the irradiation light emitted from the backlight corresponding to the image signal that defines the image displayed on the liquid crystal panel 110.
- the irradiation light from the light source is controlled corresponding to the display image displayed on the liquid crystal panel 110. For example, darken the light emitted from the light source in a portion where a dark image is displayed, or match the light emitted from the light source with the color of the display image in a portion where a monochrome image is displayed Is done.
- the image signal is a signal that determines what gradation is to be given to each pixel of the liquid crystal panel 110 that is a display unit, that is, a signal that controls the transmittance of each pixel.
- This image signal is normally supplied as a video signal that defines a display image to be displayed as a liquid crystal display device, and is a gradation signal for each of the R, G, B sub-pixels constituting each pixel of the liquid crystal panel 110. It is.
- the video signal processing circuit 120 (image conversion unit) refers to the gradation table 121 for the gradation signal of each pixel obtained from the image signal corresponding to the curved portion of the seamless lens that covers the frame of the display surface, A gradation correction value is read for each horizontal line, and an input gradation is converted into an output gradation.
- the gradation table 121 stores, as correction values, output gradations corresponding to the input gradations of the video signal that are set in advance for each horizontal line of the liquid crystal panel 110. It is.
- the correction value for example, the angle ⁇ shown in FIG. 1C (upper side inclination shown in FIG. 1D) is calculated at the time of manufacturing the apparatus, and gradations that do not cause color unevenness are set in advance from the graph shown in FIG. 1D. Keep it. For example, if the input gradation is “63”, 1 LINE of the output gradation is “74”, 2 LINE is “73”, and NLINE is “64”.
- the image signal is input to the gradation control circuit 130, and is divided into a horizontal drive signal and a vertical drive signal so that one image can be displayed by scanning in the vertical direction and the horizontal direction.
- the horizontal drive signal and the vertical drive signal drive the horizontal drive circuit 140 and the vertical drive circuit 150, respectively.
- gradation signals for image display are sequentially given to the respective pixels from the horizontal driving circuit 140 through the data lines. A display image is formed.
- the light source control signal is input to the light source control circuit 160, and the light source control circuit 160 generates a light source drive signal that indicates the color and brightness of the irradiation light to be emitted to each of the plurality of light sources.
- each light source has R, G, and B three-color LEDs that are light emitting elements. Therefore, the light source drive signal is R, G, B that each light source has. This is a signal that indicates the light emission luminance that is originally required for each of the LEDs.
- the light source driving signal is converted into luminance data in the light source control circuit 160 by applying luminance correction described later as necessary.
- the luminance data is a signal that determines the actual light emission luminance of each LED that is a light emitting element, and this luminance data is applied to the light source driving circuit 170 that is a driver of the LED. Then, the light source driving circuit 170 individually controls the voltage or current applied to each LED and supplies it to each LED via a connection line.
- the image signal processing circuit 120 displays an image of a line having a curved portion of a seamless lens based on the position of a horizontal line on the frame of the display surface of the liquid crystal panel 110 stored in advance. It is determined whether it is a signal (step S402). For example, if it is stored in advance that the frame from the top of the horizontal line to the 10th line is a horizontal line of the frame, the horizontal line up to the 10th line is determined as a video signal having a curve portion.
- step S402 when it is determined that the seamless lens curve portion is a video signal of a line, the video signal processing circuit 120 converts the video signal corresponding to the seamless lens curve portion covering the frame of the display surface to a gradation level. With reference to the table 121, the gradation correction value is read for each horizontal line, and the input gradation is converted into the output gradation (step S403). The video signal processing circuit 120 determines for each horizontal line whether or not it is a video signal of the lens unit, and converts only the video signal of the lens unit sequentially with reference to the gradation table stored in the memory. Then, the video signal processing circuit 120 displays the image obtained by the conversion in step S403 (step S404).
- step S402 if it is determined in step S402 that the curve portion of the seamless lens is not a video signal of a line, the video signal processing circuit 120 performs gradation of the video signal corresponding to the curve portion of the seamless lens covering the frame of the display surface. The image is displayed as it is without correcting (steps S402 ⁇ S404).
- the gradation of the video signal corresponding to the curved portion of the seamless lens covering the frame of the display surface can be corrected, color unevenness due to the viewing angle characteristics of the curved portion of the seamless lens can be corrected.
- a display device that can be reduced can be provided.
- FIG. 5 is a block diagram showing the overall configuration of the liquid crystal display device 100 according to the second embodiment.
- the configuration differs from that of the first embodiment in that the function of the video signal processing circuit 120 and an RGB gradation table 122 for independently correcting the RGB gradations are provided.
- the video signal processing circuit 120 refers to the RGB gradation table 122 for the gradation signal of each pixel in the liquid crystal panel 110 obtained from the video signal corresponding to the curved portion of the seamless lens that covers the frame of the display surface.
- the gradation correction value is read out, and the input gradation is converted into the output gradation independently of RGB.
- the RGB gradation table 122 is an output RGB corresponding to the input RGB gradation of the video signal set in advance for each horizontal line of the frame of the display surface of the liquid crystal panel 110. It is a table which memorize
- the image signal processing circuit 120 displays an image of a line having a curved portion of a seamless lens based on the position of a horizontal line on the frame of the display surface of the liquid crystal panel 110 stored in advance. It is determined whether it is a signal (step S702).
- step S702 If it is determined in step S702 that the seamless lens curve portion is a video signal of a certain line, the video signal processing circuit 120 converts the video signal corresponding to the seamless lens curve portion covering the frame of the display surface to the RGB floor. With reference to the tone table 122, the gradation correction value is read for each horizontal line, and the input RGB gradation is converted to the output RGB gradation (step S703). That is, since the chromaticity changes due to the chromatic aberration of the lens or the color of the lens itself, the non-lens portion and the chromaticity change. Therefore, the chromaticity is corrected with reference to a gradation table previously set in the memory. Then, the video signal processing circuit 120 displays the image obtained by the conversion in step S403 (step S704).
- step S702 determines whether the curve portion of the seamless lens is a video signal of a line. If it is determined in step S702 that the curve portion of the seamless lens is not a video signal of a line, the video signal processing circuit 120 determines the gradation of the video signal corresponding to the curve portion of the seamless lens that covers the frame of the display surface. The image is displayed as it is without correcting (step S702 ⁇ S704).
- each of the RGB gradations of the video signal corresponding to the curved portion of the seamless lens that covers the frame of the display surface can be corrected. Therefore, depending on the viewing angle characteristics of the curved portion of the seamless lens.
- a display device capable of reducing color unevenness can be provided.
- FIG. 8 is a schematic block diagram showing the overall configuration of the liquid crystal display device 100 according to the third embodiment.
- the difference from the first and second embodiments is the function of the video signal processing circuit 120. Since the video is expanded by the seamless lens, it is necessary to compress the video in order to display the same video as the input image. As shown in FIG. 9, since the video viewed by the viewer is expanded by (A + B) / A times, it is necessary to compress and correct the image of the curved portion of the seamless lens by A / (A + B) times.
- the video signal processing circuit 120 compresses the image represented by each pixel obtained from the video signal corresponding to the curved portion of the seamless lens covering the frame of the display surface by thinning it out with a horizontal line.
- the image size is reduced when the lens image is compressed, it is necessary to increase the input video size by B.
- B 10 LINE
- the size of the input image is set to 800 ⁇ RGB ⁇ 610.
- step S1001 when a video signal is input (step S1001), the video signal processing circuit 120, based on the position of the horizontal line on the frame of the display surface of the liquid crystal panel 110 stored in advance, the video of the line having the curved portion of the seamless lens. It is determined whether it is a signal (step S1002).
- step S1002 If it is determined in step S1002 that the seamless lens curve portion is a line video signal, the video signal processing circuit 120 is obtained from the video signal corresponding to the seamless lens curve portion covering the frame of the display surface. The image represented by each pixel is compressed by thinning it out along the horizontal line (step S1003). Then, the video signal processing circuit 120 displays the image obtained by the conversion in step S1003 (step S1004).
- step S1002 if it is determined in step S1002 that the seamless lens curve portion is not a video signal of a line, the video signal processing circuit 120 displays an image indicated by the video signal corresponding to the seamless lens curve portion covering the frame of the display surface. The image is displayed as it is without being compressed (step S1002 ⁇ S1004).
- the image indicated by the video signal corresponding to the curved portion of the seamless lens covering the frame of the display surface can be compressed, color unevenness due to the viewing angle characteristics of the curved portion of the seamless lens can be reduced.
- a display device that can be reduced can be provided.
- the method of reducing color unevenness due to the viewing angle characteristics of the curved portion of the seamless lens is not limited to the correction method described in the above embodiments, and is a method of correcting the input video signal by arithmetic processing. May be.
- the configuration described in the above embodiment merely shows a specific example, and does not limit the technical scope of the present invention. Any configuration can be employed within the scope of the effects of the present invention.
- liquid crystal display device 110 liquid crystal panel 120 video signal processing circuit 121 gradation table 122 RGB gradation table 130 gradation control circuit 140 horizontal drive circuit 150 vertical drive circuit 160 light source control circuit 170 light source drive circuit
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Abstract
Description
図1Aは、本発明の実施形態1に係る液晶表示装置を示す概略図であり、図1Bは、本発明の実施形態1に係る液晶表示装置を示す断面図である。図1Aに示すように、本実施形態1にかかる液晶表示装置100は、表示部である液晶パネル110、液晶パネル110の前面に設けられたシームレスレンズ200、及びこの液晶パネル110で画像表示を行うために必要な透過光を照射する照明装置であるバックライト(図示せず)を備えている。ここで、図1Bに示すように、液晶パネルの表示面の前面に設けられたシームレスレンズの縁は曲面をなしてカーブ部分200aを構成している。シームレスレンズのカーブ部分200aは、液晶パネル110の額縁200bの上に設けられている。これにより、額縁の部分にも画像が表示される。このシームレスレンズを用いることにより、色ムラが発生するという場合がある。この色ムラの発生の原因として、シームレスレンズの縁のカーブ部分200aの視野角特性がある。図1Cに示すように、シームレスレンズの表面がカーブしていない部分と、カーブ部分とでは、光線の光路長が異なるため、図1Dに示すような視野角特性となる。そのため、視覚をずらして液晶パネルの表示面をみると、このシームレスレンズのカーブ部分の視野角特性により、シームレスレンズのカーブ部分に対応する液晶パネルの表示面に表示されている画像に色ムラが発生する場合がある。そのため、表示画像に後述する処理をしなければならない。なお、シームレスレンズにおいて、表面が曲面となっているカーブ部分をレンズ部とよび、表面が平らになっている部分を非レンズ部とよぶこともできる。なお、画像表示を行うための信号処理を行う映像表示回路や、アクティブバックライトとしてバックライトの各部分の色合いや明るさを調整するための制御回路、駆動回路などは、図1では図示を省略している。
図5は、本実施形態2にかかる液晶表示装置100の全体構成を示すブロック図である。なお、実施形態1と構成が異なるところは、映像信号処理回路120の機能と、RGBそれぞれの階調を独立に補正するためのRGB階調テーブル122を備えるところである。
図8は、本実施形態3にかかる液晶表示装置100の全体構成を示す概略ブロック図である。なお、実施形態1、2と構成が異なるところは、映像信号処理回路120の機能である。シームレスレンズによって映像を伸張しているため、入力画像と同じ映像を表示するためには映像を圧縮する必要がある。図9の様に視聴者が見る映像は(A+B)/A倍に伸張しているため、シームレスレンズのカーブ部分の画像をA/(A+B)倍し圧縮補正する必要がある。映像信号処理回路120は、表示面の額縁を覆うシームレスレンズのカーブ部分に対応する映像信号から得られた各画素の表す画像を水平ラインで間引いて圧縮する。ただし、レンズ部分の画像を圧縮すると画像サイズが小さくなるため、入力する映像サイズをBだけ大きくする必要がある。例えば、800×RGB×600解像度のモジュールを使用し、A=30LINE、B=10LINEであると、入力画像のサイズを800×RGB×610にする。
110 液晶パネル
120 映像信号処理回路
121 階調テーブル
122 RGB階調テーブル
130 階調制御回路
140 水平駆動回路
150 垂直駆動回路
160 光源制御回路
170 光源駆動回路
Claims (5)
- シームレスレンズを表示面の前面に設けた表示装置であって、
映像信号を入力する映像信号入力部と、
前記映像信号入力部が入力した映像信号から得られる表示画像のうち、前記シームレスレンズのカーブ部分に対応する表示画像を水平ライン毎に画像変換する画像変換部とを備えることを特徴とする、表示装置。 - 前記シームレスレンズのカーブ部分に対応する表示画像の示す映像信号の入力階調と出力階調とを関連付けて記憶する階調テーブルを更に備え、
前記画像変換部は、前記階調テーブルを参照して、前記シームレスレンズのカーブ部分に対応する表示画像を水平ライン毎に画像変換する、請求項1に記載の表示装置。 - 前記シームレスレンズのカーブ部分に対応する表示画像の示す映像信号の入力のRGB階調と出力のRGB階調とを関連付けて記憶するRGB階調テーブルを更に備え、
前記画像変換部は、前記RGB階調テーブルを参照して、前記シームレスレンズのカーブ部分に対応する表示画像を水平ライン毎に画像変換する、請求項1に記載の表示装置。 - 前記画像変換部は、前記シームレスレンズのカーブ部分に対応する表示画像を水平ラインで間引いて圧縮する画像変換を行う、請求項1に記載の表示装置。
- 前記表示装置は、液晶表示装置である、請求項1~4のいずれかに記載の表示装置。
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2011511334A JPWO2010125840A1 (ja) | 2009-04-28 | 2010-02-09 | 表示装置 |
BRPI1006967A BRPI1006967A2 (pt) | 2009-04-28 | 2010-02-09 | aparelho de vídeo |
EP10769540A EP2369574A4 (en) | 2009-04-28 | 2010-02-09 | DISPLAY DEVICE |
CN2010800040899A CN102272821A (zh) | 2009-04-28 | 2010-02-09 | 显示装置 |
US13/138,041 US20110267541A1 (en) | 2009-04-28 | 2010-02-09 | Display apparatus |
RU2011126670/07A RU2502101C2 (ru) | 2009-04-28 | 2010-02-09 | Устройство отображения |
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JP2009-109388 | 2009-04-28 | ||
JP2009109388 | 2009-04-28 |
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WO2010125840A1 true WO2010125840A1 (ja) | 2010-11-04 |
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PCT/JP2010/051872 WO2010125840A1 (ja) | 2009-04-28 | 2010-02-09 | 表示装置 |
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US (1) | US20110267541A1 (ja) |
EP (1) | EP2369574A4 (ja) |
JP (1) | JPWO2010125840A1 (ja) |
CN (1) | CN102272821A (ja) |
BR (1) | BRPI1006967A2 (ja) |
RU (1) | RU2502101C2 (ja) |
WO (1) | WO2010125840A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014050265A1 (ja) * | 2012-09-25 | 2014-04-03 | シャープ株式会社 | 表示装置及び表示方法 |
KR20190017289A (ko) * | 2017-08-10 | 2019-02-20 | 엘지디스플레이 주식회사 | 표시장치 및 이의 구동방법 |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9019170B2 (en) * | 2013-03-14 | 2015-04-28 | Lg Electronics Inc. | Display device and method for controlling the same |
KR101426726B1 (ko) * | 2013-11-22 | 2014-08-05 | 방채원 | 베젤이 보이지 않는 투광커버를 구비한 멀티스크린 디스플레이 장치 |
CN103676237A (zh) * | 2013-12-19 | 2014-03-26 | 京东方科技集团股份有限公司 | 一种液晶面板、液晶模组及显示设备 |
CN108288448B (zh) * | 2017-01-09 | 2021-04-30 | 昆山工研院新型平板显示技术中心有限公司 | 显示驱动系统及其驱动方法和显示装置 |
SI25370A (sl) * | 2017-02-28 | 2018-08-31 | Gregor Felzer | Elektronski umetni noht |
KR102364165B1 (ko) * | 2017-06-30 | 2022-02-16 | 엘지디스플레이 주식회사 | 표시 장치 및 표시 장치의 구동 방법 |
US11817061B2 (en) | 2018-04-30 | 2023-11-14 | Hewlett-Packard Development Company, L.P. | Controlling light intensity of a display panel |
CN108550341B (zh) * | 2018-05-31 | 2021-01-15 | 联想(北京)有限公司 | 一种显示设备及显示方法 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000180964A (ja) * | 1998-12-21 | 2000-06-30 | Nippon Hoso Kyokai <Nhk> | マルチ投射型スクリーン |
JP2001147486A (ja) * | 1999-11-19 | 2001-05-29 | Olympus Optical Co Ltd | 映像表示装置 |
JP2004524551A (ja) * | 2000-11-27 | 2004-08-12 | シームレス ディスプレイ リミテッド | ビジュアル・ディスプレイスクリーン装置 |
JP2006243267A (ja) | 2005-03-02 | 2006-09-14 | Sharp Corp | 液晶表示装置 |
WO2008149449A1 (ja) * | 2007-06-07 | 2008-12-11 | Telesystems Co., Ltd. | マルチディスプレイ装置 |
WO2009157161A1 (ja) * | 2008-06-26 | 2009-12-30 | シャープ株式会社 | 表示装置及び電子機器 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5347294A (en) * | 1991-04-17 | 1994-09-13 | Casio Computer Co., Ltd. | Image display apparatus |
US5668569A (en) * | 1996-04-05 | 1997-09-16 | Rainbow Displays Inc. | Tiled, flat-panel displays with luminance-correcting capability |
JP2001350428A (ja) * | 2000-06-05 | 2001-12-21 | Olympus Optical Co Ltd | 表示装置、表示装置の調整方法、携帯電話機 |
US6956544B2 (en) * | 2003-12-22 | 2005-10-18 | Motorola, Inc. | Dual mode display |
KR101030537B1 (ko) * | 2004-06-30 | 2011-04-21 | 엘지디스플레이 주식회사 | 액정표시장치 및 그를 이용한 휘도 편차 보상방법 |
CN100462816C (zh) * | 2007-09-21 | 2009-02-18 | 友达光电股份有限公司 | 液晶显示装置及其驱动方法 |
CN101540125B (zh) * | 2009-04-16 | 2012-06-27 | 友达光电股份有限公司 | 显示系统 |
-
2010
- 2010-02-09 EP EP10769540A patent/EP2369574A4/en not_active Withdrawn
- 2010-02-09 JP JP2011511334A patent/JPWO2010125840A1/ja active Pending
- 2010-02-09 BR BRPI1006967A patent/BRPI1006967A2/pt not_active IP Right Cessation
- 2010-02-09 US US13/138,041 patent/US20110267541A1/en not_active Abandoned
- 2010-02-09 WO PCT/JP2010/051872 patent/WO2010125840A1/ja active Application Filing
- 2010-02-09 CN CN2010800040899A patent/CN102272821A/zh active Pending
- 2010-02-09 RU RU2011126670/07A patent/RU2502101C2/ru not_active IP Right Cessation
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000180964A (ja) * | 1998-12-21 | 2000-06-30 | Nippon Hoso Kyokai <Nhk> | マルチ投射型スクリーン |
JP2001147486A (ja) * | 1999-11-19 | 2001-05-29 | Olympus Optical Co Ltd | 映像表示装置 |
JP2004524551A (ja) * | 2000-11-27 | 2004-08-12 | シームレス ディスプレイ リミテッド | ビジュアル・ディスプレイスクリーン装置 |
JP2006243267A (ja) | 2005-03-02 | 2006-09-14 | Sharp Corp | 液晶表示装置 |
WO2008149449A1 (ja) * | 2007-06-07 | 2008-12-11 | Telesystems Co., Ltd. | マルチディスプレイ装置 |
WO2009157161A1 (ja) * | 2008-06-26 | 2009-12-30 | シャープ株式会社 | 表示装置及び電子機器 |
Non-Patent Citations (1)
Title |
---|
See also references of EP2369574A4 * |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014050265A1 (ja) * | 2012-09-25 | 2014-04-03 | シャープ株式会社 | 表示装置及び表示方法 |
KR20190017289A (ko) * | 2017-08-10 | 2019-02-20 | 엘지디스플레이 주식회사 | 표시장치 및 이의 구동방법 |
KR102390984B1 (ko) * | 2017-08-10 | 2022-04-26 | 엘지디스플레이 주식회사 | 표시장치 및 이의 구동방법 |
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RU2502101C2 (ru) | 2013-12-20 |
US20110267541A1 (en) | 2011-11-03 |
EP2369574A4 (en) | 2012-05-23 |
BRPI1006967A2 (pt) | 2016-04-12 |
JPWO2010125840A1 (ja) | 2012-10-25 |
CN102272821A (zh) | 2011-12-07 |
RU2011126670A (ru) | 2013-01-10 |
EP2369574A1 (en) | 2011-09-28 |
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