WO2020075956A1 - Barrière de parallaxe et dispositif d'affichage stéréoscopique comprenant celle-ci - Google Patents

Barrière de parallaxe et dispositif d'affichage stéréoscopique comprenant celle-ci Download PDF

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Publication number
WO2020075956A1
WO2020075956A1 PCT/KR2019/008792 KR2019008792W WO2020075956A1 WO 2020075956 A1 WO2020075956 A1 WO 2020075956A1 KR 2019008792 W KR2019008792 W KR 2019008792W WO 2020075956 A1 WO2020075956 A1 WO 2020075956A1
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WIPO (PCT)
Prior art keywords
unit
light transmitting
pixel
parallax barrier
display panel
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PCT/KR2019/008792
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English (en)
Korean (ko)
Inventor
이종오
이교현
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주식회사 오버다임
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Publication of WO2020075956A1 publication Critical patent/WO2020075956A1/fr

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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

Definitions

  • the present invention relates to a parallax barrier and a stereoscopic display device including the same.
  • the 3D image display technology is a technique that makes a three-dimensional effect be felt by binocular parallax, in which differences occur between the left and right eyes.
  • the method of viewing a 3D image can be largely divided into a glasses method and a glasses-free method.
  • the glasses method has the inconvenience of wearing glasses, and it may be difficult to observe objects other than a stereoscopic image while wearing glasses. Accordingly, studies on the autostereoscopic method are being actively conducted.
  • the glasses-free method can be roughly divided into a lenticular method using a cylindrical lens and a parallax barrier method using a light transmitting part and a light blocking part. Since the lens is used in the lenticular method, distortion of an image may occur.
  • the parallax barrier method has an advantage that it is possible to observe three-dimensionally at various locations.
  • the ratio of the light transmitting portion is very low. That is, when the number of views is implemented, the ratio of the light transmitting part to the light blocking part becomes 1: (n-1), and the ratio of the light transmitting part is inevitably lowered. As such, if the ratio of the light-transmitting portion is lowered, the ratio of the portion of the display device to display an image is reduced, and the resolution may be lowered.
  • n is a multiple of 2 and sub-pixels 210 of R, G, and B are arranged in a p-row x q column in order to implement an n-point of view is described.
  • a parallax barrier 20 and a stereoscopic display device having a light transmitting unit that transmits the sub-pixels 210 as a photo light transmitting unit are proposed.
  • the three-dimensional display panel of the aforementioned patent for example, when the signal processing for the three-dimensional in the state that q is a multiple of 3, for example, p is 2, q is 3 of 6 views (view)
  • the same color was repeated in the row direction, so it was difficult to realize the three-dimensional.
  • the stereoscopic display is displayed by receiving the image data content as an image signal.
  • data to be used for the stereoscopic display panel of the above-mentioned patent is signal-processed in sub-pixel units, so data compression through a codec was impossible.
  • the basic compression method of the codec is a pixel-based compression method, so it is difficult to preserve data of each subpixel (R, G, B) using a codec.
  • Embodiments of the present invention are to provide a parallax barrier and a stereoscopic display device including the same, which can improve luminance and resolution while overcoming the constraints of a viewpoint generated when implementing a multi-view.
  • embodiments of the present invention is to provide a parallax barrier capable of both horizontal and vertical views and a stereoscopic display device including the same.
  • embodiments of the present invention are intended to provide a high-resolution stereoscopic display device, and image data (content) using a signal processing method used in the stereoscopic display device is compressed through a codec so that it can be driven even in a low-spec 2D display device. It aims to do.
  • the slope may be between 62 and 65.
  • n is an integer of 4 or more, a multiple of 2, p is 2, and q is a multiple of 3.
  • the boundary line of the light transmitting portion is formed in a diagonal direction. At this time, the parallax barrier,
  • a transparent substrate comprising glass
  • a barrier pattern formed on the transparent substrate may be further included.
  • z (z is 3, 4) subpixels are defined as one unit pixel, and n unit pixels are arranged in a plurality of rows (p rows) and a plurality of columns (q columns) to form a pixel group.
  • p rows rows
  • q columns columns
  • a plurality of light transmitting units and a plurality of light blocking units respectively corresponding to the plurality of unit pixels are provided,
  • N is an integer of 2 or more
  • the light transmitting portion is formed along the diagonal direction of the display panel,
  • the slope C of the light transmitting unit provides a stereoscopic display device having a range of the following equation.
  • n multi-viewpoints can be implemented without limiting the number of viewpoints. That is, horizontal lines are prevented from being generated in the display panel even at a specific number of views.
  • the video signal is processed in the main pixel unit including R. GB by the main pixel unit video signal processing, it is possible to compress video data (content) using a codec, so it can be driven even in low 2D display specifications. Instead, it can be produced with 1: 1 matching content, so it can have a high resolution when running on a 3D display.
  • the unit pixels have all RGB, both a horizontal view design and a vertical view design are possible.
  • FIG. 1 is a plan view showing a display arrangement according to the prior art.
  • FIG. 2 is a schematic cross-sectional view of a stereoscopic display device according to an exemplary embodiment of the present invention.
  • FIG 3 is a schematic cross-sectional view of a stereoscopic display device according to a modification of the present invention.
  • FIG. 4 is a plan view schematically illustrating a unit pixel that implements multi-view in a display panel according to an exemplary embodiment of the present invention, and a light blocking part and a light transmitting part of a parallax barrier corresponding thereto.
  • FIG. 5 is a view showing an image distribution in a display panel according to an embodiment of the present invention.
  • 6 to 7 are views showing an image distribution in a display panel according to an embodiment of the present invention.
  • FIG. 8 is a plan view schematically showing the light distribution unit and the light transmission unit of a conventional parallax barrier corresponding to image distribution pixels of a conventional display panel.
  • FIG. 9 is a plan view schematically showing the light blocking unit and the light transmitting unit of the unit pixels and the corresponding parallax barrier that implement multi-view in a display panel according to an embodiment of the present invention.
  • FIG. 10 is a plan view schematically illustrating a light blocking unit and a light transmitting unit of a unit pixel implementing a multi-view point and a corresponding parallax barrier in a display panel according to another embodiment of the present invention.
  • FIG. 11 is a schematic cross-sectional view of a stereoscopic display device according to another exemplary embodiment of the present invention.
  • FIG. 2 is a schematic cross-sectional view of a stereoscopic display device according to an embodiment of the present invention
  • FIG. 3 is a schematic cross-sectional view of a stereoscopic display device according to another embodiment of the present invention.
  • the stereoscopic display device 10 of the present embodiment includes a display panel 100 in which a plurality of unit pixels are defined and implements a multi-view point, and a driver 300 that controls driving of the display panel 100 And, it may include a parallax barrier 20 disposed on one surface (more precisely, the front (front)) of the display panel 100.
  • the display panel 100 a liquid crystal display panel (LCD), a plasma display panel (PDP), a display panel using a light emitting diode (LED), or the like may be used.
  • LCD liquid crystal display panel
  • PDP plasma display panel
  • LED light emitting diode
  • the present invention is not limited thereto, and it is needless to say that the display panel 100 of various methods may be used.
  • n is an integer of 2 or more.
  • the driving unit 300 is for controlling the driving of the display panel 100, and provides a multi-view image signal to the display panel 100 to realize a stereoscopic image by a multi-view.
  • the driving unit 300 controls the unit pixels to be implemented in a multi-view image by pixel groups formed by arranging a plurality of rows and a plurality of columns, which will be described in more detail later.
  • the parallax barrier 20 positioned on the front surface of the display panel 100 selectively transmits a multi-view image to form a parallax barrier so that different images can be viewed from both eyes of an observer.
  • the parallax barrier 20 includes a plurality of light transmitting units 110 and a plurality of light blocking units 120 respectively corresponding to the unit pixels 210 of the display panel 100.
  • the parallax barrier 20 may include a transparent substrate 130 and a barrier pattern 125 formed on the transparent substrate 130.
  • the barrier pattern 125 may be formed by applying and drying UV ink or thermosetting ink and then patterning, but the present invention is not limited thereto.
  • the portion where the barrier pattern 125 is formed constitutes the light blocking portion 120, and the portion where the barrier pattern 125 is not formed constitutes the light transmitting portion 110.
  • the planar arrangement of the light blocking part 120 and the light transmitting part 110 will be described in more detail later.
  • the transparent substrate 130 may be, for example, a glass substrate.
  • a glass substrate When a glass substrate is used as the transparent substrate 130, it has a high transmittance and does not require a separate substrate. Therefore, the image implemented in the display panel 100 can be transmitted at a high transmittance without problems such as distortion.
  • the conventional parallax barrier was used by laminating a patterned polymer film (eg, polyethylene phthalate (PET) film) on a tempered glass using an adhesive.
  • a patterned polymer film eg, polyethylene phthalate (PET) film
  • PET polyethylene phthalate
  • the transmittance of a polymer film, tempered glass, etc. is lower than that of ordinary glass, and the conventional parallax barriers used together have a remarkably low transmittance.
  • offset interference may occur due to a difference in refractive index between the polymer film, the tempered glass, and the adhesive, whereby a moire phenomenon may occur.
  • the transparent substrate 130 is formed of a glass substrate so that a high transmittance can be obtained without image distortion.
  • the present invention is not limited to the material of the transparent substrate 130, and various materials can be used as the transparent substrate 130.
  • the parallax barrier 20 is attached and fixed to the front surface of the display panel 100 by the adhesive layer 140.
  • Various materials may be used as the adhesive layer 140, and for example, materials such as an ultraviolet adhesive, a visible light adhesive, an infrared adhesive, and a thermal adhesive may be used.
  • the adhesive layer 140 has a refractive index similar to that of the transparent substrate 130 to minimize moire and prevent the occurrence of Newton Ring.
  • the adhesive layer 140 may have a refractive index of about 1.48 to 1.54, similar to that of the glass substrate.
  • the parallax barrier 20 is exemplified by a transparent substrate 130 and a barrier pattern 125 formed on the transparent substrate 130.
  • the present invention is not limited to this.
  • the parallax barrier 22 has a transparent substrate 130 and a barrier pattern 125, and an adhesive layer formed on the transparent substrate 130 and the barrier pattern 125 140 and a separate transparent substrate 150 adhered by the adhesive layer 140 may be included.
  • the separate transparent substrate 150 described above may include the same material as the transparent substrate 130.
  • the parallax barrier 22 and the display panel 100 may be combined by an adhesive layer (not shown) or a fixing member (not shown).
  • a parallax barrier having various cross-sectional structures can be used.
  • FIG. 4 is a plan view schematically showing a unit pixel of a display panel according to an embodiment of the present invention and a light blocking part and a light transmitting part of a parallax barrier corresponding thereto.
  • 5 is a diagram illustrating a pixel distribution in a display panel according to an embodiment of the present invention.
  • a plurality of unit pixels 250 are defined in the display panel 100. More specifically, the plurality of unit pixels 250 are arranged with a plurality of columns in a row direction (x-axis direction of the drawing) and a plurality of rows in a column direction (y-axis direction of the drawing).
  • the unit pixel 20 includes a red subpixel R emitting red light, a green subpixel G emitting green light, and a blue subpixel B emitting blue light.
  • an image may be displayed by one red subpixel, one green pixel, and one blue subpixel adjacent to each other in a row direction, but the present invention is not limited thereto. Accordingly, various modifications are possible, such as forming a unit pixel including colors other than red, green, and blue, for example, white.
  • the unit pixel 250 does not mean one sub-pixel that implements a specific color of R, G, and B, but a main pixel composed of z sub-pixels as a unit for expressing a color to be implemented.
  • An array consisting of 6 unit pixels is defined as one pixel group 230 as a minimum unit representing.
  • the display panel 100 of this embodiment when an image having n number of views is displayed, it is implemented in the pixel group 230 of n unit pixels 250 of z subpixels.
  • the n-view point of the pixel group is implemented in units of a pixel group (consisting of n * z sub-pixels) consisting of n unit pixels arranged in p rows x q columns.
  • n is an integer of 2 or more
  • p and q are divisors of n
  • the product of p and q is n
  • z is an integer. More precisely, since n points of view are implemented using the pixel group 230, which is an array of unit pixels 250 constituting p rows and q columns, since at least two rows and two columns must be provided, n is 4 or more. It is an integer, and z means the number of subpixels forming a unit pixel.
  • the unit pixel is 2 rows
  • a pixel array arranged in three columns and having a pixel group of six views is shown in detail. That is, when two unit rows made of three unit pixels adjacent in the row direction are used, a total of six unit pixels are obtained, so that six viewpoints can be implemented. At this time, since each unit pixel has three subpixels, the number (z) of subpixels that implement six viewpoints is 18, q becomes 3, and p becomes 2.
  • n is a multiple of 2, and p is preferably 2.
  • the n-time point can be implemented without restriction of the number of views by arranging in units of pixel groups consisting of “even rows”) 212.
  • R, G, and B subpixels such as R, G, and B are defined as a unit pixel, and an array of pixel groups in which unit pixels are arranged in two or more rows and columns.
  • image data compression using a codec is possible by using pixel-type signal processing in which R, G, and B subpixels such as R, G, and B are combined to form a unit pixel. Since compression using a codec usually uses a compression method of a main pixel unit, it is difficult to preserve data of each subpixel using a codec.
  • the specification of a driven 2D display may be lowered, and in the case of a 3D display, 1: 1 matching content can be produced, resulting in high resolution. It is possible to have.
  • FIG. 6 shows a vertical strip form in the case of a horizontal view
  • FIG. 7 shows a horizontal strip form in the case of a vertical view
  • FIG. 9 is a plan view schematically showing the light blocking unit and the light transmitting unit of the unit pixels and the corresponding parallax barrier for realizing multi-view in a display panel according to an embodiment of the present invention.
  • the unit pixels are the respective R, G, and B subpixels as in the prior art, in the case of the basic horizontal view, the horizontal arrangement is made in the order of RGB. Since it only has B, the signal processing must be different accordingly, and the barrier design also changes.
  • unit pixel images corresponding to odd numbers during n views are sequentially placed in the first unit row 211, and unit pixel images corresponding to even numbers during n views are displayed in the second unit row ( 212). That is, for example, in the case of 6 point of view, the 5th point of view image in the unit pixel P11 of the first unit row 211, the 3rd point of view image in the unit pixel P12, and the 1st point of view image in the unit pixel P13 This is projected, and the sixth viewpoint image may be projected to the unit pixel P21 of the second unit row 212, the fourth viewpoint image to the unit pixel P22, and the second viewpoint image to the unit pixel P23. At this time, R, G, and B images are projected onto each viewpoint image.
  • the pixel group implementing n views may have a diagonal shape shifted to the right by one unit pixel while going upward.
  • the first, second, and first images are located from the right to left in the lower unit row P1 among the first and second unit rows, and the right from left to right in the upper unit row P2. 2, 4, and 6 images can be located.
  • the unit pixel is composed of sub-pixels arranged in a vertical direction.
  • the pixel group that implements the n view may have a diagonal shape shifted to the left by one unit pixel while going upward. (Not shown)
  • one unit pixel corresponding to the light transmitting unit 110 and m unit pixels corresponding to the light blocking unit 120 are repeatedly arranged when viewed in the row direction.
  • m is the number of q minus one.
  • the ratio of the light transmitting part 110 to the light blocking part 120 is 1: m (ie, 1: (q-1))
  • the light blocking part 120 is used. It is possible to reduce the ratio of and increase the ratio of the light transmitting unit 110. As described above, there is an advantage in that luminance and resolution can be increased by increasing the proportion of the light transmitting unit 110.
  • the number of viewpoints is not limited, and while the horizontal view and the vertical view are implemented with the same signal processing, the ratio of the light-transmitting portion 110 in the parallax barrier 20 can be maintained as before.
  • the light transmitting unit 110 and the unit pixel 250 are illustrated to have the same size, but the present invention is not limited thereto. In practice, the size of the light transmitting unit 110 corresponding to each unit pixel 250 may be smaller than the size of each unit pixel 250.
  • the size ratio of the light transmitting unit 110 may be relatively increased. This is designed to minimize the interference phenomenon by designing the wavelength of light to pass through the unit pixel 250 at a predetermined number of times, and consequently to minimize the moire phenomenon.
  • the width ratio of the light transmitting part 110: the light blocking part 120 may be 0.95: (m + 0.05) ⁇ 1.33: (m-1.33). More preferably, it may be 0.95: (m + 0.05) to 1.2: (m-1.2).
  • the light-transmitting unit 110 is formed along the diagonal direction of the display panel 100, so that a multi-view image can be smoothly expressed.
  • the palux barrier 20 of the present embodiment has excellent transmittance and refractive index characteristics, so that it is possible to effectively prevent the moire phenomenon from occurring.
  • the slope C of the light transmitting unit 110 is according to the following equation (2).
  • the slope of the light transmitting unit 110 may be 62 to 65 degrees.
  • At least a part of the boundary line of the light blocking part and the light transmitting part in the parallax barrier may have a step shape along the boundary of the unit pixels, and may be entirely formed along the diagonal direction of the display panel. That is, in this specification, the diagonal direction means the overall direction, and the actual shape may have a shape of a line or may be a step shape.
  • the present invention is not limited to this, and of course, various other types of light-transmitting portions may be formed.
  • the parallax barrier 20 may be located on the rear surface of the display panel 100.
  • the width of the light-transmitting portion 110 of the parallax barrier 20 can be made larger than the width of the unit pixel.
  • the barrier line can be made invisible to the user, thereby eliminating the user's reluctance that may be caused by the barrier line.

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)

Abstract

Une barrière de parallaxe selon un mode de réalisation de la présente invention est disposée sur une surface d'un panneau d'affichage dans lequel une pluralité de pixels unitaires sont définis et qui met en œuvre n vues. La barrière de parallaxe comprend une pluralité d'unités d'émission de lumière et une pluralité d'unités de blocage de lumière qui correspondent à la pluralité de pixels unitaires, respectivement, où, lorsque n est un nombre entier de 2 ou plus, et m est une valeur obtenue par soustraction de 1 de q qui est une valeur obtenue en divisant n par p qui est un diviseur de n, un pixel unitaire correspondant à une unité d'émission de lumière et un nombre m de pixels unitaires correspondant aux unités de blocage de lumière sont agencés de façon répétée dans la direction des lignes.
PCT/KR2019/008792 2018-10-11 2019-07-16 Barrière de parallaxe et dispositif d'affichage stéréoscopique comprenant celle-ci WO2020075956A1 (fr)

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KR10-2018-0120956 2018-10-11
KR1020180120956A KR101971994B1 (ko) 2018-10-11 2018-10-11 패럴랙스 배리어 및 이를 포함하는 입체 표시 장치

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JP2011069869A (ja) * 2009-09-24 2011-04-07 Casio Computer Co Ltd 表示装置、及び画像制御方法
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JP2014510936A (ja) * 2011-02-06 2014-05-01 オ イ、チョン 立体表示装置
KR20160101125A (ko) * 2013-12-20 2016-08-24 코닌클리케 필립스 엔.브이. 무안경식 디스플레이 디바이스

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KR101476886B1 (ko) 2012-06-29 2014-12-26 인텔렉추얼디스커버리 주식회사 차선변경 지원장치
KR102028741B1 (ko) * 2015-06-26 2019-10-04 주식회사 엘지화학 원통형 이차전지 및 그의 제조방법

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KR100938481B1 (ko) * 2009-06-04 2010-01-25 (주)브이쓰리아이 패럴렉스 배리어 및 이를 구비한 입체영상 디스플레이 장치
JP2011069869A (ja) * 2009-09-24 2011-04-07 Casio Computer Co Ltd 表示装置、及び画像制御方法
JP2014510936A (ja) * 2011-02-06 2014-05-01 オ イ、チョン 立体表示装置
KR20130130481A (ko) * 2012-05-22 2013-12-02 (주) 네오스코프 개선형 기울기 패턴의 패럴렉스 배리어 및 이를 이용한 입체영상표시장치
KR20160101125A (ko) * 2013-12-20 2016-08-24 코닌클리케 필립스 엔.브이. 무안경식 디스플레이 디바이스

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