WO2015018139A1 - 可切换二维与三维显示模式的显示装置 - Google Patents

可切换二维与三维显示模式的显示装置 Download PDF

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Publication number
WO2015018139A1
WO2015018139A1 PCT/CN2013/087207 CN2013087207W WO2015018139A1 WO 2015018139 A1 WO2015018139 A1 WO 2015018139A1 CN 2013087207 W CN2013087207 W CN 2013087207W WO 2015018139 A1 WO2015018139 A1 WO 2015018139A1
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Prior art keywords
dimensional
display
transparent electrode
display device
polarizer
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PCT/CN2013/087207
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English (en)
French (fr)
Inventor
武延兵
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BOE Technology Group Co Ltd
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BOE Technology Group Co Ltd
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Priority to US14/353,506 priority Critical patent/US9529204B2/en
Publication of WO2015018139A1 publication Critical patent/WO2015018139A1/zh
Anticipated expiration legal-status Critical
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/30—Image reproducers
    • H04N13/302—Image reproducers for viewing without the aid of special glasses, i.e. using autostereoscopic displays
    • H04N13/31—Image reproducers for viewing without the aid of special glasses, i.e. using autostereoscopic displays using parallax barriers
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
    • G02B30/20—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes
    • G02B30/26—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type
    • G02B30/27—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type involving lenticular arrays
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
    • G02B30/20—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes
    • G02B30/22—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the stereoscopic type
    • G02B30/25—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the stereoscopic type using polarisation techniques
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
    • G02B30/20—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes
    • G02B30/26—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type
    • G02B30/30—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type involving parallax barriers
    • G02B30/31—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type involving parallax barriers involving active parallax barriers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/30—Image reproducers
    • H04N13/302—Image reproducers for viewing without the aid of special glasses, i.e. using autostereoscopic displays
    • H04N13/31—Image reproducers for viewing without the aid of special glasses, i.e. using autostereoscopic displays using parallax barriers
    • H04N13/312—Image reproducers for viewing without the aid of special glasses, i.e. using autostereoscopic displays using parallax barriers the parallax barriers being placed behind the display panel, e.g. between backlight and spatial light modulator [SLM]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/30—Image reproducers
    • H04N13/356—Image reproducers having separate monoscopic and stereoscopic modes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/30—Image reproducers
    • H04N13/356—Image reproducers having separate monoscopic and stereoscopic modes
    • H04N13/359—Switching between monoscopic and stereoscopic modes
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B33/00—Electroluminescent light sources
    • H05B33/12—Light sources with substantially two-dimensional [2D] radiating surfaces
    • H05B33/26—Light sources with substantially two-dimensional [2D] radiating surfaces characterised by the composition or arrangement of the conductive material used as an electrode
    • H05B33/28—Light sources with substantially two-dimensional [2D] radiating surfaces characterised by the composition or arrangement of the conductive material used as an electrode of translucent electrodes
    • 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
    • G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
    • G02F2201/44—Arrangements combining different electro-active layers, e.g. electrochromic, liquid crystal or electroluminescent layers

Definitions

  • the present invention relates to the field of display technologies, and in particular, to a display device that can switch two-dimensional and three-dimensional display modes.
  • 3D display is generally realized by providing a parallax barrier 20' (i.e., a slit grating) on one side of the display screen of the display panel 10'.
  • the specific principle is shown in FIG. 1.
  • the parallax barrier 20' has a slit grating structure, and an image of a pixel on the display panel 10' is propagated to a viewing point through a slit on the parallax barrier 20', as can be seen from FIG.
  • the pixels on the display panel 10' that can be observed by the left warm I and the right eye ⁇ at the observation point are different, so that the observer can observe two different images at the observation point, forming a bare warm 3D display.
  • the liquid crystal shutter slit grating is the most commonly used technique.
  • the liquid crystal shutter slit grating is a TN (Twist Nematic) mode liquid crystal panel, which includes a first substrate 100' and a second substrate 200' disposed in a box from top to bottom, and is filled in the first A liquid crystal layer 60' between a substrate 100' and a second substrate 200'.
  • TN Transist Nematic
  • a patterned first transparent electrode 40 ′ is formed on a surface of the first substrate 100 ′ adjacent to the liquid crystal layer 60 ′, and a first liquid crystal alignment film 42 ′ is further formed on the first transparent electrode 40 ′, wherein
  • the first transparent electrode 40' is composed of a plurality of parallel electrode strips, and the distance between adjacent electrode strips conforms to the naked eye.
  • a second transparent electrode 4A having a full surface is formed on a surface of the second substrate 200' adjacent to the liquid crystal layer 60', and a second liquid crystal alignment film 43' is further formed on the second transparent electrode 41', and a second The alignment direction of the liquid crystal alignment film 43' and the first liquid crystal alignment film 42' is the same.
  • the first transparent electrode 40' and the second transparent electrode 4'' are electrically connected to both ends of the power source 50', respectively, and a switch 70' is provided to control the application of a voltage to the first transparent electrode 40' and the second transparent electrode 41'.
  • the specific working principle is that, in the 2D display, the switch 70' is turned on, the voltage is not applied to the first transparent electrode 40' and the second transparent electrode 4, and the liquid crystal molecules of the liquid crystal layer 60' are not deflected, and the light passes through the liquid crystal shutter slit grating.
  • 2D display can be realized; in 3D display, the switch 70' is closed, and a voltage is applied to the first transparent electrode 40' and the second transparent electrode 4, and the first transparent
  • the liquid crystal molecules of the liquid crystal layer 60' corresponding to the position of the electrode strip of the electrode 40' are deflected, the light here cannot pass, and the light can pass only through the slit between the electrode strips, so that 3D display can be realized.
  • the thickness of the liquid crystal shutter slit grating is relatively thick, and the production cost is relatively high, which is disadvantageous for the thinning and promotion of the display device capable of switching two-dimensional and three-digit display modes.
  • the technical problem mainly solved by the present invention is how to realize the thinning and thinning of the display device capable of switching two-dimensional and three-digit display modes, and to reduce the production cost.
  • the present invention provides a display device capable of switching two-dimensional and three-dimensional display modes, which solves the problem that the display device of the conventional switchable two-dimensional and dimensional display mode has a thick thickness and a high production cost.
  • the present invention provides a display device capable of switching a two-dimensional and dimensional display mode, including a display panel and a backlight, the display panel including a first side disposed on a side of the display panel adjacent to the backlight a polarizer and a second polarizer disposed on a side of the display panel facing away from the backlight, wherein a parallax barrier is disposed between the first polarizer and the backlight;
  • a first transparent electrode, an electroluminescent layer and a second transparent electrode are sequentially disposed between the first polarizer and the parallax barrier; and the first transparent electrode and/or the second transparent electrode have at least a pattern corresponding to the opaque stripe of the parallax barrier;
  • the electroluminescent layer corresponding to the pattern In the two-dimensional display mode, the electroluminescent layer corresponding to the pattern is in a light-emitting state; and in the three-dimensional display mode, the electroluminescent layer corresponding to the pattern is in a light transmitting state.
  • first transparent electrode, the electroluminescent layer, the second transparent electrode, and the parallax barrier are sequentially formed on a surface of the first polarizer near a side of the backlight . .
  • the display device further includes a first transparent substrate between the first polarizer and the backlight; the parallax barrier is formed on the first transparent substrate adjacent to the first polarizer On the surface of one side
  • first transparent electrode, the electroluminescent layer and the second transparent electrode are sequentially formed on a surface of the first polarizer near a side of the backlight. Further, the first transparent substrate is fixedly connected to the first polarizer.
  • the display device further includes a second transparent substrate between the first polarizer and the parallax barrier; the first transparent electrode, the electroluminescent layer and the second transparent electrode Formed on the surface of the second transparent substrate adjacent to the side of the parallax barrier.
  • the second transparent substrate is fixedly connected to the first transparent substrate.
  • the second transparent substrate is fixedly connected to the first polarizer.
  • the intensity of the light emitted by the electroluminescent layer and the light of the backlight is further adjusted, and the parallax barrier is placed next to the electroluminescent layer
  • the light transmittance of the electroluminescent layer in a light transmitting state is higher than 92%.
  • the light transmittance of the opaque strip of the parallax barrier is less than 8%.
  • the display device capable of switching between two-dimensional and three-dimensional display modes provided by the present invention, in 2D display, by applying a voltage to cause the electroluminescent layer to emit light, for compensating the slit light source to become a surface light source for 2D display, and
  • the electroluminescent layer is in a light transmitting state, and by controlling whether or not a voltage is applied to the electroluminescent layer, the switching between the two-dimensional and the two-dimensional display mode can be realized, and the two-dimensional electrochromic layer can be realized to realize the two-dimensional Switching to the three-dimensional display mode does not substantially increase the thickness of the display device, thereby facilitating the lightening and thinning of the display device, greatly reducing the production cost, improving the market competitiveness, and facilitating the promotion and application.
  • Figure i is a schematic diagram of the principle of the naked eye in the prior art
  • FIG. 2 is a schematic structural view of a liquid crystal shutter type parallax barrier in the prior art
  • FIG. 3 is a schematic structural view 1 of a display device according to Embodiment 1 of the present invention.
  • FIG. 4 is a second schematic structural view of a display device according to Embodiment 1 of the present invention.
  • FIG. 5 is a schematic structural view 3 of a display device according to Embodiment 1 of the present invention.
  • FIG. 6 is a schematic structural view 4 of a display device according to Embodiment 1 of the present invention.
  • FIG. 7 is a schematic structural view 1 of a display device according to Embodiment 2 of the present invention.
  • FIG. 8 is a second schematic structural diagram of a display device according to Embodiment 2 of the present invention.
  • 10' display panel; 1 ⁇ , right warm; 12', left; 40', first transparent electrode; 4! ', second transparent electrode; 42', first liquid crystal alignment film; 43', Two liquid crystal alignment film; 50', power supply; 60', liquid crystal layer; 70', switch; 100', first substrate; 200', second substrate; 20', parallax barrier; 10, display panel; a baffle; 30, a second polarizer; 31, a first polarizer; 50, a backlight; 40, a first transparent electrode; 401, a first electrode strip; 41, an electroluminescent layer; 42, a second transparent electrode; 421, a second electrode strip; 00, a first substrate; 200, a second substrate; 101, a third substrate; 201, a fourth substrate.
  • the display device of the switchable two-dimensional and two-dimensional display mode in the embodiment of the present invention includes a display panel and a backlight, and a second polarizer is disposed on a side of the display panel facing away from the backlight, and the display panel is adjacent to the backlight.
  • a first polarizer is provided.
  • a parallax barrier for the naked eye and the three-dimensional display is disposed between the first polarizer and the backlight, and the light of the backlight passes through the parallax barrier to form a slit light source, which is required for the bare warm display. Slit light source.
  • a first transparent electrode, an electroluminescent layer and a second transparent electrode are sequentially disposed between the display panel and the parallax barrier, and the first transparent electrode and/or the second transparent electrode have at least a parallax barrier
  • the pattern corresponding to the opaque stripe switches between the light-emitting state and the light-transmitting state corresponding to the pattern.
  • the electroluminescent layer corresponding to the pattern is in a light-emitting state, and is used to compensate the slit light source to become a surface light source for two-dimensional display; in 3D display, the electro-optical corresponding to the pattern
  • the luminescent layer is in a light transmitting state.
  • the first transparent electrode is composed of at least a plurality of parallel first electrode strips, and the first electrode strips are in one-to-one correspondence with the opaque stripe positions of the parallax barrier, and/or the second transparent electrodes are at least Parallel second electrode strips are formed, and the second electrode strips are in one-to-one correspondence with the opaque stripe positions of the parallax barrier.
  • the electroluminescent layer corresponding to the position of the electrode strip emits light, so that the slit light source formed after passing through the parallax barrier is compensated in the electroluminescent layer Next, it becomes a surface light source, providing the required surface light source for 2D display.
  • the electroluminescent layer When no voltage is applied between the first transparent electrode and the second transparent electrode, the electroluminescent layer is in a light transmitting state, so that the back The light from the source forms a slit source after passing through the parallax barrier, providing the desired slit source for the 3D display.
  • the switching between the two-dimensional and three-dimensional display modes can be achieved by controlling whether a voltage is applied between the first transparent electrode and the second transparent electrode.
  • the light transmittance needs to be higher than 80%, preferably higher than 92%.
  • the electro-optic layer is disposed between the parallax barrier and the display panel, the two-dimensional and three-dimensional display modes can be switched, and the thickness of the display device is not substantially increased, thereby facilitating the switchable two-dimensional and three-dimensional display modes.
  • the display device is light and thin, and the production cost is greatly reduced, the market competitiveness is improved, and the application is promoted.
  • the light emitted by the electroluminescent layer is the same as the intensity and color of the light of the backlight, so that the 2D display provides a uniform surface light source, thereby ensuring the effect of 2D display.
  • a parallax barrier may be disposed to closely adhere to the electroluminescent layer to ensure electrolysis. The compensation effect of the luminescent layer on the slit light source.
  • a display device capable of switching two-dimensional and two-dimensional display modes is provided, which specifically includes a display panel 10 and a backlight 50.
  • the display panel 10 includes a first substrate 100 and a second substrate 200.
  • a second polarizer 30 is disposed on a side of the display panel 10 facing away from the backlight 50, and a first polarizer 31 is disposed on a side of the display panel 10 adjacent to the backlight 50.
  • a parallax barrier 20 for naked eye and three-dimensional display is disposed between the first polarizer 31 and the backlight 50, and the light of the backlight 50 passes through the parallax barrier 20 to form a slit light source for three-dimensional display.
  • the first transparent electrode 40, the electroluminescent layer 41 and the second transparent electrode 42 are sequentially disposed between the first polarizer 31 and the parallax barrier 20 for compensating the slit light source, and the compensated narrow
  • the slit light source is again turned into a surface light source for two-dimensional display.
  • the first transparent electrode 40, the electroluminescent layer 41, the second transparent electrode 42 and the parallax barrier 20 are sequentially formed on the surface of the first polarizer 31 near the backlight 50 side, and are fixed to the first polarizer 31. Together, the relative position remains unchanged, which can ensure the effect of two-dimensional and two-dimensional display well, and avoid the alignment process during assembly, and the assembly is convenient.
  • the slit grating structure of the parallax barrier 20 may specifically be spaced black and white stripes, and black stripes (ie, opaque stripes) may be formed by using black resin, metal, or the like, and the black stripes are transparent.
  • the overshoot rate is generally less than 20%. In order to ensure the effect of 3D display, it is better to be less than 8%.
  • the light transmittance of white stripes needs to be higher than 80%, and in order to ensure the effect of 3D display, it is preferably higher than 92%.
  • the first transparent electrode 40 may include a plurality of parallel first electrode strips 401, and the first electrode strips 401 are in one-to-one correspondence with the opaque stripe positions of the parallax barrier 20,
  • the second transparent electrode 42 is an electrode on the entire surface.
  • the second transparent electrode 42 includes a plurality of parallel second electrode strips 421, and the second electrode strip 421 has a one-to-one correspondence with the opaque stripe positions of the parallax barrier 20, and the first transparent electrode 40 is The entire surface of the electrode, as shown in Figure 4; or, the first transparent electrode 40 and the second transparent electrode 42 are the entire surface of the electrode, as shown in Figure 5, at this time, when the need for 2D display, only need to The first transparent electrode 40 and the second transparent electrode 42 are energized so that the electroluminescent layer emits light on the entire surface without backlight illumination; or the first transparent electrode 40 includes a plurality of parallel first electrode strips 401, and An electrode strip 401 has a one-to-one correspondence with the opaque stripe position of the parallax barrier 20, and the second transparent electrode 42 also includes a plurality of parallel second electrode strips 421, and the second electrode strip 421 and the parallax barrier 20 The opaque stripe positions correspond one-to-one, as shown in Figure 6.
  • the display device in this embodiment further includes a transparent first substrate (first transparent) between the first polarizer 31 and the backlight 50.
  • Substrate 101 wherein, as the transparent substrate forming the third substrate 101, for example, a quartz substrate, a glass substrate, and an organic resin substrate can be used.
  • the parallax barrier 20 is formed on the surface of the first substrate 101 on the side close to the first polarizer 31, as shown in FIG. 7, the spacer 50 is provided without providing spacers in the backlight 50 and the parallax barrier 20.
  • the first transparent electrode 40, the electroluminescent layer 41 and the second transparent electrode 42 may be sequentially formed on the surface of the first polarizer 31 of the display panel 20 near the side of the backlight 50, as shown in FIG.
  • the second substrate 101 is fixedly connected to the first polarizer 31, and the first substrate 101 and the first polarizer 31 can be fixed together through the plastic frame, so that the electroluminescent layer 41 and the parallax barrier 20 are both
  • a polarizer 31 is fixed together to ensure that the relative position does not change, thereby ensuring the effect of two-dimensional and three-dimensional display.
  • a fourth substrate (second transparent substrate) 201 may be disposed between the first polarizer 31 and the parallax barrier 20, wherein, as the transparent substrate forming the fourth substrate 201, For example, a quartz substrate, a glass substrate, and an organic resin substrate can be used. And the first transparent electrode 40.
  • the electroluminescent layer 41 and the second transparent electrode 42 are sequentially formed on the surface of the fourth substrate 201 near the parallax barrier 20 side.
  • the surface light source compensated by the electroluminescent layer 41 can be provided. The light mixing distance increases the effect of the 2D display.
  • the fourth substrate 201 is preferably fixedly connected to the third substrate 101.
  • the fourth substrate 201 and the third substrate 101 may be fixed by the plastic frame.
  • the relative positions of the electrode strips and the opaque strips of the parallax barrier 20 are made constant, and the compensation effect of the electroluminescent layer 41 on the slit light source is ensured to obtain a uniform surface light source.
  • the fourth substrate 201 and the first polarizer 31 may be fixedly connected, and the electroluminescent layer 41 and the parallax barrier 20 are both fixed to the display panel 10 to ensure that the relative position thereof does not change. Thereby ensuring the effect of two-dimensional and three-dimensional display.
  • the display device capable of switching two-dimensional and dimensional display modes provides a 3D display slit for the display device by providing a parallax barrier between the display panel and the backlight.
  • the light source enables 3D display.
  • an electroluminescent layer is disposed between the display panel and the parallax barrier, wherein at least a portion of the electroluminescent layer corresponding to the opaque stripe of the parallax barrier is switchable between a light emitting state and a light transmitting state.
  • the 2D display H-inch by applying a voltage, causes the electroluminescent layer to emit light, which is used to compensate the slit light source to become a surface light source for 2D display.
  • the electroluminescent layer is in a light transmitting state.
  • the switching between the two-dimensional and three-dimensional display modes can be achieved by controlling whether or not a voltage is applied to the electroluminescent layer. Since only two electroluminescent layers need to be added, the two-dimensional and three-dimensional display modes can be switched, and the thickness of the display device is not substantially increased, thereby facilitating the thinning and thinning of the display device, greatly reducing the production cost and improving the market competition. Force, is conducive to the promotion of applications.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Electroluminescent Light Sources (AREA)

Abstract

本发明属于显示技术领域，公开了一种可切换二维与三维显示模式的显示装置，通过在显示面板的第一偏光片和背光源之间设置视差挡板，用以实现裸眼3D显示。并在第一偏光片和视差挡板之间依次设置有第一透明电极、电致发光层和第二透明电极，其中，第一透明电极和/或所述第二透明电极具有与狭缝光栅的不透光条纹对应的图案。通过控制是否对电致发光层施加电压，可以实现二维与三维显示模式的切换。由于只需增加电致发光层即可实现二维与三维显示模式的切换，基本不会增加显示装置的厚度，从而有利于实现显示装置的轻薄化，且大大降低了生产成本，提高了市场竞争力，有利于推广应用。

Description

本发明涉及显示技术领域， 特别是涉及一种可切换二维与三维显示模式 的显示装置。
现有的 3D (三维） 显示技术中， 一般通过在显示面板 10'的显示画面的 一面设置视差挡板 20' (即狭缝光栅）来实现 3D显示。具体原理如图 1所示， 视差挡板 20'具有狭缝光栅结构， 显示面板 10'上的像素的图像通过视差挡板 20'上的狭缝传播到观察点， 从图 1 中可以看到， 观察点处的左暖 I 和右眼 Ι Γ所能够观察到的显示面板 10'上的像素是不同的，从而使得观察者能够在观 察点处观察到两幅不同的图像， 形成了裸暖 3D显示。
随着市场的需求， 出现了一种可切换二维与三维显示模式的显示装置。 为了实现二维与≡维显示模式的切换， 液晶快门狭缝光栅是最常用的技术。 如图 2所示，液晶快门狭缝光栅是一种 TN ( Twist Nematic )模式的液晶面板， 从上到下依次包括对盒设置的第一基板 100'和第二基板 200'， 以及填充在第 一基板 100'和第二基板 200'之间的液晶层 60'。 在第一基板 100'的靠近液晶层 60'—侧的表面上形成有图案化的第一透明电极 40'， 在第一透明电极 40'上还 形成有第一液晶取向膜 42', 其中， 第一透明电极 40'由多个平行电极条组成， 且相邻电极条之间的距离符合裸眼.三维显示用的狭缝光栅条件。 在第二基板 200'的靠近液晶层 60'—侧的表面上形成有整面的第二透明电极 4Γ，在第二透 明电极 41 '上还形成有第二液晶取向膜 43'， 且第二液晶取向膜 43'与第一液晶 取向膜 42'的取向方向相同。 将第一透明电极 40'和第二透明电极 4Γ分别与电 源 50'的两端电性连接， 并设置开关 70'来控制对第一透明电极 40'和第二透明 电极 41 '施加电压。 具体的工作原理为， 2D显示时， 打开开关 70', 不给第一 透明电极 40'和第二透明电极 4Γ施加电压，液晶层 60'的液晶分子不发生偏转， 光线经过液晶快门狭缝光栅后 ^为面光源， 能够实现 2D显示； 3D显示时， 闭合开关 70'， 给第一透明电极 40'和第二透明电极 4Γ施加电压， 与第一透明 电极 40'的电极条位置对应的液晶层 60'的液晶分子发生偏转， 此处的光线不 能通过， 光线仅能从电极条之间的狭缝通过， 能够实现 3D显示。
但液晶快门狭缝光栅的厚度较厚， 且生产成本也比较高， 不利于可切换 二维与三位显示模式的显示装置的轻薄化和推广。 本发明主要解决的技术问 题如何实现可切换二维与三位显示模式的显示装置的轻薄化， 并降低生产成 本。
(一） 要解决的技术问题
本发明提供一种可切换二维与三维显示模式的显示装置， 用以解决现有 可切换二维与 维显示模式的显示装置的厚度较厚，且生产成本较高的问题。
(二） 技术方案
为了解决上述技术问题， 本发明提供一种可切换二维与 维显示模式的 显示装置， 包括显示面板和背光源， 所述显示面板包括设置在所述显示面板 靠近所述背光源一侧的第一偏光片和设置在所述显示面板背离所述背光源一 侧的第二偏光片， 其中， 在所述第一偏光片和所述背光源之间设置有视差挡 板；
在所述第一偏光片和视差挡板之间依次设置有第一透明电极、 电致发光 层和第二透明电极； 且所述第一透明电极和 /或所述第二透明电极至少具有与 所述视差挡板的不透光条纹对应的图案；
二维显示模式时， 与所述图案对应的电致发光层处于发光状态； 三维显 示模式时， 与所述图案对应的电致发光层处于透光状态。
迸一步地， 所述第一透明电极、 所述电致发光层、 所述第二透明电极和 所述视差挡板依次形成在所述第一偏光片的靠近所述背光源一侧的表面上。。
迸一步地， 所述显示装置还包括位于所述第一偏光片和所述背光源之间 的第一透明基板； 所述视差挡板形成在所述第一透明基板靠近所述第一偏光 片一侧的表面上
进一步地， 所述第一透明电极、 所述电致发光层和所述第二透明电极依 次形成在所述第一偏光片靠近所述背光源一侧的表面上。 迸一步地， 所述第一透明基板与所述第一偏光片固定连接。
进一步地， 所述显示装置还包括位于所述第一偏光片和所述视差挡板之 间的第二透明基板； 所述第一透明电极、 所述电致发光层和所述第二透明电 极依次形成在所述第二透明基板靠近所述视差挡板一侧的表面上。
迸一步地， 所述第二透明基板与所述第一透明基板固定连接。
进一步地， 所述第二透明基板与所述第一偏光片固定连接。
迸一步地， 所述电致发光层发出的光线与所述背光源的光线的强度和颜 迸一步地， 所述视差挡板紧贴所述电致发光层设置
进一步地， 所述电致发光层处于透光状态时的透光率高于 92%。
迸一歩地， 所述视差挡板的不透光条紋的透光率低于 8%。
(≡) 有益效果
本发明所提供的可切换二维与三维显示模式的显示装置， 2D显示时， 通 过施加电压使得电致发光层发光， 用于补偿狭缝光源， 使其变为 2D 显示用 的面光源， 而 3D显示时， 电致发光层处于透光状态， 通过控制是否对电致 发光层施加电压， 即可以实现二维与≡维显示模式的切换， 由于只需增加电 致发光层即可实现二维与三维显示模式的切换， 基本不会增加显示装置的厚 度， 从而有利于实现显示装置的轻薄化， 且大大降低了生产成本， 提高了市 场竞争力， 有利于推广应用。
图 i为现有技术中裸眼 .≡维显示的原理示意图；
图 2为现有技术中液晶快门式视差挡板的结构示意图；
图 3为本发明实施例一中显示装置的结构示意图一；
图 4为本发明实施例一中显示装置的结构示意图二；
图 5为本发明实施例一中显示装置的结构示意图三；
图 6为本发明实施例一中显示装置的结构示意图四；
图 7为本发明实施例二中显示装置的结构示意图一；
图 8为本发明实施例二中显示装置的结构示意图二。 图中： 10'、 显示面板； 1 Γ、 右暖； 12'、 左 ； 40'、 第一透明电极； 4! '、 第二透明电极； 42'、第一液晶取向膜； 43'、第二液晶取向膜； 50'、 电源； 60'、 液晶层； 70'、 开关； 100'、 第一基板； 200'、 第二基板； 20'、 视差挡板； 10、 显示面板； 20、 视差挡板； 30、 第二偏光片； 31、 第一偏光片； 50、 背光源; 40、 第一透明电极； 401、 第一电极条； 41、 电致发光层； 42、 第二透明电极； 421、 第二电极条； ! 00、 第一基板； 200、 第二基板； 101、 第三基板； 201、 第四基板。
下面结合^图和实施例， 对本发明的具体实施方式作进一步详细描述。 以下实施例用于说明本发明， 但不用来限制本发明的范围。
本发明实施例中的可切换二维与≡维显示模式的显示装置包括显示面板 和背光源， 在显示面板背离背光源的一侧设置有第二偏光片， 在显示面板靠 近背光源的一侧设置有第一偏光片。 为了实现 3D显示， 在第一偏光片和背 光源之间设置有裸眼.三维显示用的视差挡板， 背光源的光线经过视差挡板后 形成狭缝光源， 为裸暖≡维显示提供所需的狭缝光源。 为了实现 2D 显示， 在显示面板和视差挡板之间依次设置第一透明电极、 电致发光层和第二透明 电极， 且第一透明电极和 /或第二透明电极至少具有与视差挡板的不透光条紋 对应的图案， 与该图案对应的电致发光层在发光状态与透光状态之间进行切 换。 具体的， 2D显示时， 与该图案对应的电致发光层处于发光状态， 用于补 偿狭缝光源， 使其变为二维显示用的面光源； 3D显示时， 与该图案对应的电 致发光层处于透光状态。
具体的， 第一透明电极至少由多个平行的第一电极条组成， 且第一电极 条与视差挡板的不透光条纹位置一一对应， 和 /或， 第二透明电极至少由多个 平行的第二电极条组成， 且第二电极条与视差挡板的不透光条纹位置一一对 应。 当给第一透明电极和第二透明电极之间施加电压时， 与电极条位置对应 的电致发光层就会发光， 使得经过视差挡板后形成的狭缝光源， 在电致发光 层的补偿下， 又变为面光源， 为 2D 显示提供所需的面光源。 当不给第一透 明电极和第二透明电极之间施加电压时， 电致发光层处于透光状态， 使得背 光源的光线在经过视差挡板后形成狭缝光源， 为 3D 显示提供所需的狹缝光 源。 通过控制是否对第一透明电极和第二透明电极之间施加电压， 可以实现 二维与三维显示模式的切换。
其中， 电致发光层处于透光状态时， 为了保证 3D 显示的效果， 其光透 过率需要高于 80%， 最好高于 92%。
由于只需在视差挡板和显示面板之间设置电致发光层即可以实现二维与 三维显示模式的切换， 基本不会增加显示装置的厚度， 从而有利于实现可切 换二维与三维显示模式的显示装置的轻薄化， 且大大降低了生产成本， 提高 了市场竞争力， 有利于推广应用。
本发明实施例中优选电致发光层发出的光线与背光源的光线的强度和颜 色相同， 以为 2D显示提供光线均匀的面光源， 保证 2D显示的效果。
当第一透明电极和 /或第二透明电极由电极条组成时， 为了方便电极条与 视差挡板的不透光条纹位置对位， 可以设置视差挡板紧贴电致发光层， 保证 电致发光层对狭缝光源的补偿效果。
实施例一
结合图 3所示， 本实施例中提供一种可切换二维与≡维显示模式的显示 装置， 具体包括显示面板 10和背光源 50， 显示面板 10包括第一基板 100和 第二基板 200, 在显示面板 10背离背光源 50的一侧设置有第二偏光片 30, 在显示面板 10靠近背光源 50的一侧设置有第一偏光片 31。 为了实现 3D显 示,在第一偏光片 31和背光源 50之间设置有裸眼.三维显示用的视差挡板 20， 背光源 50的光线经过视差挡板 20后形成三维显示用的狭缝光源。 为了实现 2D显示， 在第一偏光片 31和视差挡板 20之间依次设置第一透明电极 40、 电致发光层 41 和第二透明电极 42， 用于补偿狭缝光源， 而且补偿后的狭缝 光源又变为二维显示用的面光源。具体的，第一透明电极 40、电致发光层 41、 第二透明电极 42和视差挡板 20依次形成在第一偏光片 31靠近背光源 50— 侧的表面上， 与第一偏光片 31固定在一起， 相对位置保持不变， 能够很好的 保证二维与≡维显示的效果， 并避免了组装时的对位过程， 组装方便。
其中， 视差挡板 20的狭缝光栅结构具体可以为间隔的黑白条紋， 并可以 利用黑色的树脂、 金属等材料制作黑条紋（即不透光条纹）， 且黑条紋的光透 过率一般低于 20%， 为了保证 3D显示的效果， 最好低于 8 %。 而白条紋的 光透过率需要高于 80%， 为了保证 3D显示的效果， 最好高于 92 %。
本实施例中， 如图 3所示， 第一透明电极 40可以包括多个平行的第一电 极条 401 , 且第一电极条 401与视差挡板 20的不透光条紋位置一一对应， 而 第二透明电极 42为整面的电极。 当然， 也可以为： 第二透明电极 42包括多 个平行的第二电极条 421 , i第二电极条 421与视差挡板 20的不透光条纹位 置一一对应， 而第一透明电极 40为整面的电极， 如图 4所示； 或， 第一透明 电极 40和第二透明电极 42均为整面的电极， 如图 5所示， 此时， 当需要进 行 2D显示时， 只需要将第一透明电极 40和第二透明电极 42通电， 使得电 致发光层整面发光， 而不再需要背光源发光； 或， 第一透明电极 40包括多个 平行的第一电极条 401， 且第一电极条 401与视差挡板 20的不透光条紋位置 一一对应， 而第二透明电极 42也包括多个平行的第二电极条 421 , 且第二电 极条 421与视差挡板 20的不透光条紋位置一一对应， 如图 6所示。 为了给背光源 50提供一定的混光距离， 如图 7所示， 本实施例中的显示 装置还包括位于第一偏光片 31和背光源 50之.间的、 透明的第 基板 （第一 透明基板） 101 , 其中， 作为形成第三基板 101的透明基板， 可以使用如： 石 英基板、 玻璃基板和有机树脂基板。并将视差挡板 20形成在第 基板 101靠 近第一偏光片 31—侧的表面上， 如图 7所示， 从而不需在背光源 50和视差 挡板 20设置间隔物来为背光源 50提供一定的混光距离， 筒化工艺。
相应地， 第一透明电极 40、 电致发光层 41和第二透明电极 42可以依次 形成在显示面板 20的第一偏光片 31靠近背光源 50—侧的表面上，如图 4所 示。并将第≡基板 101与第一偏光片 31固定连接， 具体可以遥过胶框将第 基板 101与第一偏光片 31固定在一起， 从而将电致发光层 41和视差挡板 20 均与第一偏光片 31固定在一起， 保证其相对位置不会发生变化， 从而保证二 维与三维显示的效果。
本实施例中， 如图 8所示， 还可以在第一偏光片 31和视差挡板 20之间 设置第四基板（第二透明基板） 201 , 其中， 作为形成第四基板 201的透明基 板， 可以使用如： 石英基板、 玻璃基板和有机树脂基板。 并将第一透明电极 40、 电致发光层 41和第二透明电极 42依次形成在第四基板 201靠近视差挡 板 20—侧的表面上， 2D显示时， 可以为经过电致发光层 41补偿得到的面光 源提供一定的混光距离， 提高 2D显示的效果。
当第一透明电极 40和 /或第二透明电极 41由电极条组成日寸， 优选第四基 板 201与第三基板 101固定连接， 具体可以通过胶框将第四基板 201与第三 基板 101固定在一起，使得电极条与视差挡板 20的不透光条紋的相对位置对 应不变， 保证电致发光层 41对狭缝光源的补偿效果， 得到均匀的面光源。 进 一步地， 还可以将第四基板 201与第一偏光片 31固定连接， 认而将电致发光 层 41和视差挡板 20均与显示面板 10固定在一起，保证其相对位置不会发生 变化， 从而保证二维与三维显示的效果。
由以上实施例可以看出， 本发明所提供的可切换二维与 维显示模式的 显示装置， 遥过在显示面板和背光源之间设置视差挡板， 为显示装置提供 3D 显示 ^的狭缝光源， 从而能够实现 3D 显示。 并在显示面板和视差挡板之间 设置电致发光层， 其中， 电致发光层至少与视差挡板的不透光条紋对应的部 分可以在发光状态和透光状态之间进行切换。 2D显示 H寸， 通过施加电压使得 电致发光层发光， 用于补偿狭缝光源， 使其变为 2D显示用的面光源。 而 3D 显示时， 电致发光层处于透光状态。 通过控制是否对电致发光层施加电压， 即可以实现二维与三维显示模式的切换。 由于只需增加电致发光层即可实现 二维与三维显示模式的切换， 基本不会增加显示装置的厚度， 从而有利于实 现显示装置的轻薄化， 且大大降低了生产成本， 提高了市场竞争力， 有利于 推广应用。
以上所述仅是本发明的优选实施方式， 应当指出， 对于本技术领域的普 遥技术人员来说， 在不脱离本发明技术原理的前提下， 还可以做出若干改进 和替换， 这些改进和替换也应视为本发明的保护范围。

Claims

1. 一种可切换二维与三维显示模式的显示装置， 包括显示面板和背光 源， 所述显示面板包括设置在所述显示面板靠近所述背光源一侧的第一偏光 片和设置在所述显示面板背离所述背光源一侧的第二偏光片， 其特征在于， 在所述第一偏光片和所述背光源之间设置有视差挡板；
在所述第一偏光片和视差挡板之间依次设置有第一透明电极、 电致发光 层和第二透明电极； 且所述第一透明电极和 /或所述第二透明电极至少具有与 所述视差挡板的不透光条紋对应的图案；
二维显示模式时， 与所述图案对应的电致发光层处于发光状态； 三维显 示模式时， 与所述图案对应的电致发光层处于透光状态。
2. 根据权利要求 1所述的可切换二维与 ΞΞ维显示模式的显示装置， 其特 征在于， 所述第一透明电极、 所述电致发光层、 所述第二透明电极和所述视 差挡板依次形成在所述第一偏光片的靠近所述背光源一侧的表面上。
3. 根据权利要求 1所述的可切换二维与三维显示模式的显示装置， 其特 征在于， 所述显示装置还包括位于所述第一偏光片和所述背光源之间的第一 透明基板；
所述视差挡板形成在所述第一透明基板靠近所述第一偏光片一侧的表面 卜'
4. 根据权利要求 3所述的可切换二维与 ΞΞ维显示模式的显示装置， 其特 征在于， 所述第一透明电极、 所述电致发光层和所述第二透明电极依次形成 在所述第一偏光片靠近所述背光源一侧的表面上。
5. 根据权利要求 4所述的可切换二维与三维显示模式的显示装置， 其特 征在于， 所述第一透明基板与所述第一偏光片固定连接。
6. 根据权利要求 3所述的可切换二维与三维显示模式的显示装置， 其特 征在于， 所述显示装置还包括位于所述第一偏光片和所述视差挡板之间的第 二透明基板；
所述第一透明电极、 所述电致发光层和所述第二透明电极依次形成在所 述第二透明基板靠近所述视差挡板一侧的表面上。
7. 根据权利要求 6所述的可切换二维与三维显示模式的显示装置， 其特 征在于， 所述第二透明基板与所述第一透明基板固定连接。
8. 根据权利要求 6所述的可切换二维与三维显示模式的显示装置， 其特 征在于， 所述第二透明基板与所述第一偏光片固定连接。
9. 根据权利要求 1-8任一项所述的可切换二维与三维显示模式的显示装 置， 其特征在于， 所述电致发光层发出的光线与所述背光源的光线的强度和 颜色相同。
10. 根据权利要求 1 -9 任一项所述的可切换二维与三维显示模式的显示 装置， 其特征在于， 所述视差挡板紧贴所述电致发光层设置。
11. 根据权利要求 1-10任一项所述的可切换二维与三维显示模式的显示 装置， 其特征在于， 所述电致发光层处于透光状态时的透光率高于 92%。
12. 根据权利要求 1- 11任一项所述的可切换二维与≡维显示模式的显示 装置， 其特征在于， 所述视差挡板的不透光条纹的透光率低于 8%。
PCT/CN2013/087207 2013-08-09 2013-11-15 可切换二维与三维显示模式的显示装置 Ceased WO2015018139A1 (zh)

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