WO2016155192A1 - 显示装置及其驱动方法 - Google Patents

显示装置及其驱动方法 Download PDF

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Publication number
WO2016155192A1
WO2016155192A1 PCT/CN2015/086861 CN2015086861W WO2016155192A1 WO 2016155192 A1 WO2016155192 A1 WO 2016155192A1 CN 2015086861 W CN2015086861 W CN 2015086861W WO 2016155192 A1 WO2016155192 A1 WO 2016155192A1
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WIPO (PCT)
Prior art keywords
electrode
voltage
display
touch
display device
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PCT/CN2015/086861
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English (en)
French (fr)
Inventor
刘伟
董学
王海生
丁小梁
杨盛际
刘英明
刘红娟
赵卫杰
李昌峰
Original Assignee
京东方科技集团股份有限公司
北京京东方光电科技有限公司
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Application filed by 京东方科技集团股份有限公司, 北京京东方光电科技有限公司 filed Critical 京东方科技集团股份有限公司
Priority to US14/907,876 priority Critical patent/US9817508B2/en
Publication of WO2016155192A1 publication Critical patent/WO2016155192A1/zh

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    • 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
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    • G02F1/15—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 an electrochromic effect
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    • 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 
    • G02F1/15—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 an electrochromic effect
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Definitions

  • the present invention belongs to the field of display technologies, and in particular, to a display device and a driving method thereof.
  • Stereoscopic display that is, 3D display technology, mainly obtains two images of the same object at different angles according to human vision, and projects the two images into the left and right eyes of the person respectively, thereby making the images in the left and right eyes of the person
  • the brain synthesizes the left eye image and the right eye image with parallax, which will produce depth perception, that is, form a stereoscopic image display effect.
  • the existing 3D display technology is mainly divided into two types: glasses type and naked eye type.
  • Glasses-type 3D display technology requires the use of special glasses, which is not conducive to the use of portable devices. Pay more attention to the naked-eye 3D display technology in mobile electronic products.
  • the naked-eye 3D display technology is mainly divided into a lenticular lens type and a grating type, and the grating type naked-eye 3D display technology is mainly used.
  • 3D display devices with touch functions are mainly composed of a display panel, a grating, and a touch module, and the respective parts are independent of each other, and are arranged to realize 3D display and touch functions, thereby causing
  • the touch-enabled 3D display device has a large thickness, a low transmittance, and a high production cost. Therefore, there is a need for a highly integrated 3D display device with touch function to solve the above technical problems.
  • the technical problem to be solved by the present invention includes providing a display device having a reduced thickness, a low cost, and an improved aperture ratio, and a driving method thereof, in view of the above problems existing in the conventional display device.
  • a display device includes a display panel and a grating mated with the display panel.
  • the display device further includes: a voltage generating unit, a touch sensing unit, and a control unit.
  • the grating includes a first electrode sequentially disposed on a light emitting surface side of the display panel, and a second electrode having a plurality of electrode blocks.
  • the voltage generating unit is configured to provide a first voltage to the first electrode and a second voltage to the second electrode.
  • the control unit is configured to provide a first voltage to the first electrode and a second voltage to the second electrode.
  • the touch sensing unit is configured to provide a touch scan signal for each electrode block of the second electrode under the control of the control unit, and determine the touch position according to the feedback signal provided by each electrode block.
  • the grating includes an electrochromic layer between the first electrode and the second electrode at the position of the light shielding region, and the electrochromic layer is transparent in a 2D display stage, and is in a 3D display stage. Shading state.
  • the display panel comprises a plurality of pixel units arranged in a row, the width of the electrochromic layer is the same as the width of the pixel unit, and the positions are up and down.
  • the plurality of electrode blocks included in the second electrode are arranged in a row, and each of the electrode blocks is connected to the touch sensing unit through a separate lead.
  • a gap between any two adjacent column electrode blocks corresponds to a gap between two adjacent column pixel units, and each lead connected to the electrode block in the same column is disposed in two adjacent column electrode blocks. Between the gaps.
  • the touch sensing unit sequentially inputs a touch scan signal for each column of the electrode block, and when a column of the electrode block is input with a touch scan signal, the other columns are the electrodes.
  • the block maintains a second voltage.
  • the display device further includes a switch switching unit,
  • the switch switching unit is configured to transmit, by the control unit, a second voltage provided by the voltage generating unit to the second electrode, or transmit the touch scan signal output by the touch sensing unit to the first Two electrodes.
  • the voltage generating unit includes: a first voltage generating module and a second voltage generating module;
  • the first voltage generating module is configured to generate a first voltage to the first electrode
  • the second voltage generating module is configured to generate a second voltage to the second electrode.
  • the voltage values of the first voltage and the second voltage are equal; in the 3D display phase, the voltage values of the first voltage and the second voltage are not equal.
  • the first electrode is a planar electrode.
  • a method for driving any one of the display devices as described above comprising:
  • Display phase inputting a first voltage for the first electrode and a second voltage for the second electrode, And controlling the display of the 2D or 3D picture by controlling the magnitudes of the voltage values of the first voltage and the second voltage;
  • the touch phase providing touch scan signals for the respective electrode blocks of the second electrode, and determining the touch position according to the feedback signals provided by the respective electrode blocks.
  • the touching phase includes: inputting a touch scan signal for each column of the electrode block in sequence, and inputting a second input to the other electrode block when the touch scan signal is input to the column of the electrode block. Voltage.
  • the present invention can achieve at least one of the following beneficial effects and/or other benefits:
  • the display device can perform not only 2D display and 3D display but also a touch function.
  • the second electrode in the display device is used not only for adjusting the light-shielding region of the grating, but also for switching between the 2D display and the 3D display; and also for implementing the touch function of the display device, that is, the second The electrode is equivalent to a touch electrode (self-capacitance electrode). Therefore, the second electrode is both a display electrode and a touch electrode.
  • the volume is reduced, the cost is reduced, and the product is improved. rate.
  • the timing is simple and easy to control.
  • FIG. 1 is a schematic structural view of a display device according to an embodiment of the present invention.
  • Figure 2 is a cross-sectional view along line A-A of the display device illustrated in Figure 1;
  • FIG. 3 is a timing diagram of a driving method of a display device according to another embodiment of the present invention.
  • reference numerals are: 1, display panel; 11, array substrate; 12, color film substrate; 13, liquid crystal molecules; 2, grating; 21, first electrode; 22, second electrode; 23, electrochromic layer; 3, cover glass; 4, control unit; 5, voltage generation unit; 51, the first voltage generation module; 52, the second voltage generation module; 6, the touch sensing unit; 7, the switch switching unit.
  • a display device may be provided, which may include a display panel 1 and a grating 2 that cooperates with the display panel 1.
  • the grating 2 is divided into a light-shielding region and a light-transmitting region which are alternately disposed.
  • the grating 2 may include a first electrode 21 disposed on the light-emitting surface side of the display panel 1 in sequence, and an electrochromic layer 23 corresponding to the position of the light-shielding region. And a second electrode 22 having a plurality of electrode blocks.
  • the grating 2 can also be formed in other different ways.
  • the display device may further include: a voltage generating unit 5, a touch sensing unit 6, and a control unit 4.
  • the voltage generating unit 5 is configured to supply a first voltage to the first electrode 21 and a second voltage to the second electrode 22.
  • the control unit 4 is configured to control the magnitudes of the first voltage and the second voltage value generated by the voltage generating unit 5 to make the grating 2 transparent in the 2D display phase and alternately set in the 3D display phase. Shading area and light transmission area.
  • the control unit 4 can control the magnitudes of the first voltage and the second voltage value generated by the voltage generating unit 5 to cause the electrochromic layer 23 is in a transparent state in the 2D display phase and is in a light blocking state in the 3D display phase.
  • the touch sensing unit 6 is configured to provide a touch scan signal for each electrode block of the second electrode 22 during the touch phase under the control of the control unit 4, and determine the touch according to the feedback signal provided by each electrode block. position.
  • the display panel 1 may generally include an array substrate 11 , a color filter substrate 12 , and liquid crystal molecules 13 disposed between the array substrate 11 and the color filter substrate 12 .
  • a protective glass that is, a cover glass 3
  • the voltage values of the first voltage and the second voltage generated by the voltage generating unit 5 are not unique values, and the first voltage and the second voltage generated by the voltage generating unit 5 can be controlled by the control unit 4 according to different needs.
  • Each electrode block of the second electrode 22 corresponds to the coordinates of one touch point, and each electrode block is a self-capacitance electrode.
  • the display device can perform not only 2D display and 3D display, but also a touch function.
  • the second electrode 22 is used not only for the adjustment of the light-shielding region of the grating 2 to realize the switching between the 2D display and the 3D display, but also for realizing the touch function of the display device, that is, the second electrode 22 is equivalent.
  • Touch electrode self-capacitance pole. Therefore, the second electrode 22 functions as both a display electrode and a touch electrode, and has a thickness reduction, a cost reduction, and an improved product compared with the existing display device having a 2D, 3D, and touch display function. Transmittance.
  • the first electrode 21 in the present embodiment is a planar electrode, and the planar electrode is not only easy to prepare, but also has simple wiring and easy timing control.
  • the voltage generating unit 5 includes: a first voltage generating module 51 and a second voltage generating module 52.
  • the first voltage generating module 51 is configured to generate a first voltage to the first electrode 21; and the second voltage generating module 52 is configured to generate a second voltage to the second electrode 22 .
  • the generated first voltage and the second voltage are separately controlled without interfering with each other.
  • the state of the electrochromic layer 23 is controlled by an electric field between the first electrode 21 and the second electrode 22, as an implementation manner, in the 2D display phase, the first voltage and the second voltage The voltage values are equal. At this time, there is no electric field between the first electrode 21 and the second electrode 22, and the electrochromic layer 23 is in a transparent state, that is, the grating 2 is all in a transparent state, when light from the display panel 1 is transmitted through the grating 2, There is no raster at this time, so a 2D display can be presented. In the 3D display phase, the voltage values of the first voltage and the second voltage are not equal, and an electric field is formed between the first electrode 21 and the second electrode 22 at this time.
  • the electrochromic layer 23 is in a light-shielding state to form a light-shielding region of the grating 2, and a portion without the electrochromic layer 23 forms a light-transmitting region, and the light from the display panel 1 can exhibit a 3D display under the action of the grating 2. Picture.
  • the display panel 1 may include a plurality of pixel units arranged in a row, the width of the electrochromic layer 23 being the same as the width of the pixel unit, and the positions corresponding up and down. That is to say, each column of electrochromic layer 23 corresponds to a column of pixel units.
  • the plurality of electrode blocks included in the second electrode 22 may also be arranged in a row, and each of the electrode blocks is connected to the touch sensing unit through a separate lead.
  • a touch scan signal is output for each electrode block, and when one of the electrode blocks senses the touch, the feedback signal can be transmitted to the touch sensing unit through a separate lead connected thereto to accurately Determine the location where the touch occurs.
  • a gap between any two adjacent column electrode blocks corresponds to a gap between two adjacent column pixel units, and each lead connected to the electrode block in the same column is disposed at two adjacent column electrodes At the gap between the blocks. Since the gap between two adjacent column electrode blocks is a non-transmissive area, each lead is disposed here to avoid the influence of the lead The aperture ratio of the panel 1.
  • the touch sensing unit 6 sequentially inputs touch scan signals for each column of the electrode blocks, and when one of the columns of the electrode blocks is input with the touch scan signal, the other columns are The electrode block maintains a second voltage. At this time, the touch sensing unit 6 does not need to provide a plurality of signal output ports, so that the wiring is simple, easy to implement, and low in cost.
  • the display device may further include a switch switching unit 7 for transmitting the second voltage provided by the voltage generating unit 5 to the second electrode 22 under the control of the control unit 4, Or transmitting the touch scan signal output by the touch sensing unit 6 to the second electrode 22 .
  • the switch switching unit 7 can switch the input of the voltage signal of the second electrode 22 in the touch phase and the display phase.
  • the driving method includes:
  • the display phase inputting a first voltage to the first electrode 21, inputting a second voltage to the second electrode 22, and controlling the display of the 2D or 3D picture by controlling the magnitudes of the voltage values of the first voltage and the second voltage.
  • the display phase can include a 2D display phase and a 3D display phase.
  • the voltage values of the first voltage and the second voltage may be equal.
  • the electrochromic layer 23 is in a transparent state, that is, the entire grating 2 is also in a transparent state, when light from the display panel 1 is transmitted through the grating 2, Since there is no effect of the grating 2, a 2D display picture can be presented.
  • the voltage values of the first voltage and the second voltage are not equal.
  • an electric field is formed between the first electrode 21 and the second electrode 22, at which time the electrochromic layer 23 is in a light-shielding state to form a light-shielding region of the grating 2, and a portion of the grating 2 not containing the electrochromic layer 23 is formed.
  • Light zone When light from the display panel 1 is transmitted through the grating 2, a 3D display image can be presented by the grating 2.
  • the touch phase providing touch scan signals for the respective electrode blocks of the second electrode 22, and determining the touch position according to the feedback signals provided by the respective electrode blocks.
  • the touch phase occurs after the display of the 2D picture or the 3D picture, and then the touch scan signals are provided for the respective electrode blocks of the second electrode 22, and the touch signals are determined according to the feedback signals provided by the respective electrode blocks. Control position.
  • the touch scan signals are input to the electrode blocks of each column in turn, and when one of the electrode blocks is input with the touch scan signal, the other electrode blocks are Enter the second voltage.
  • the signals on the respective electrode blocks to which the touch scan signals are applied are analyzed to determine whether the touch is generated, and the voltage values at the display stages are still maintained on the respective electrode blocks to which the touch scan signals are not applied, so as to ensure The original screen is displayed.
  • the touch sensing unit 6 does not need to provide a plurality of signal output ports by adopting a column-by-column input touch scanning signal, so that the wiring is simple, easy to implement, and low in cost.
  • any reference signs placed in parentheses shall not be construed as limiting the claim.
  • the word “comprising” does not exclude the presence of the elements or the The word “a” or “an” or “an”
  • the invention may be implemented by means of hardware comprising several discrete elements, or by suitably programmed software or firmware, or by any combination thereof.

Abstract

一种显示装置及其驱动方法，属于显示技术领域。该显示装置包括显示面板（1）以及与显示面板（1）配合的光栅（2）。还包括：电压生成单元（5）、触控感应单元（6）、控制单元（4）。所述光栅（2）包括依次设置在显示面板（1）出光面侧的第一电极（21）以及具有多个电极块的第二电极（22）。电压生成单元（5）为第一电极（21）提供第一电压，为第二电极（22）提供第二电压。控制单元（4）控制第一电压和第二电压值的大小，以使所述光栅（2）在2D显示阶段呈透明状态，在3D显示阶段表现为交替设置的遮光区和透光区。在触控阶段，第二电极（22）的各个电极块充当触控电极，在控制单元（4）的控制下与触控感应单元（6）一起提供触控功能。由于第二电极（22）不仅用于显示阶段，还用于触控阶段，因此所述显示装置的厚度薄、成本低、透过率高。

Description

显示装置及其驱动方法 技术领域
本发明属于显示技术领域，具体涉及一种显示装置及其驱动方法。
背景技术
立体显示即3D显示技术主要是根据人类的视觉，获得同一物体在不同角度上的两幅图像，并将这两幅图像分别投射至人的左眼和右眼中，从而使人左、右眼中图像具有一定的视差，大脑对具有视差的左眼图像和右眼图像进行合成，就会产生深度知觉，即形成立体图像的显示效果。
现有的3D显示技术主要分为眼镜式和裸眼式两大类。眼镜式3D显示技术需要佩戴专用的眼镜，因此不利于便携式设备使用。在可移动的电子产品中更注重裸眼式3D显示技术。而裸眼3D显示技术主要是分为柱状透镜式和光栅式，其中以光栅式裸眼3D显示技术为主。目前，具有触控功能的3D显示装置大多主要是由显示面板、光栅，以及触控模组构成，各个部分是相互独立的，并经过一定的排布以实现3D显示和触控功能，因此造成这个具有触控功能的3D显示装置的厚度较大，透过率较低且生产成本较高的问题。故亟需一种高集成度的具有触控功能的3D显示装置以解决上述技术问题。
发明内容
本发明所要解决的技术问题包括，针对现有的显示装置存在的上述问题，提供一种厚度减薄、成本较低、开口率提高的显示装置及其驱动方法。
为了解决或缓解上述现有技术中的至少一个缺陷，根据本发明的一个方面提供了一种显示装置，其包括显示面板以及与显示面板配合的光栅。所述显示装置还包括：电压生成单元、触控感应单元、控制单元。所述光栅包括依次设置在显示面板出光面侧的第一电极、以及具有多个电极块的第二电极。所述电压生成单元用于为第一电极提供第一电压，为第二电极提供第二电压。所述控制单元。用于控制所述电压生成单元所生成的第一电压和第二电压值的大小，以使所述光栅 在2D显示阶段呈透明状态，在3D显示阶段表现为交替设置的遮光区和透光区。在触控阶段，所述触控感应单元用于在控制单元的控制下为第二电极的各个电极块提供触控扫描信号，以及根据各个电极块所提供的反馈信号来确定触控位置。
可选地，所述光栅在所述第一电极和第二电极之间在所述遮光区位置包括电致变色层，所述电致变色层在2D显示阶段呈透明状态，在3D显示阶段呈遮光状态。
可选地，所述显示面板包括成行成列设置的多个像素单元，所述电致变色层的宽度与所述像素单元的宽度相同，且位置上下对应。
可选地，所述第二电极所包括的多个电极块成行成列设置，每一个所述电极块通过单独引线与所述触控感应单元连接。
可选地，任意两相邻列电极块之间的间隙与两相邻列像素单元之间的间隙对应，与位于同一列的所述电极块连接的各个引线设于两相邻列电极块之间的间隙处。
可选地，在触控阶段，所述触控感应单元依次为每一列所述电极块输入触控扫描信号，且其中当一列所述电极块被输入触控扫描信号时，其它列所述电极块保持第二电压。
可选地，所述显示装置还包括开关切换单元，
所述开关切换单元用于在所述控制单元的控制下，将所述电压生成单元提供的第二电压传输给第二电极，或者将所述触控感应单元输出的触控扫描信号传输给第二电极。
可选地，所述电压生成单元包括：第一电压生成模块和第二电压生成模块；
所述第一电压生成模块用于生成第一电压给第一电极；
所述第二电压生成模块用于生成第二电压给第二电极。
可选地，在2D显示阶段，所述第一电压与第二电压的电压值相等；在3D显示阶段，所述第一电压与第二电压存的电压值不等。
可选地，所述第一电极为面状电极。
为了解决或缓解上述现有技术中的至少一个缺陷，根据本发明的另一个方面提供了一种用于驱动如上所述的任意一个显示装置的方法，所述方法包括：
显示阶段：为第一电极输入第一电压，为第二电极输入第二电压， 并通过控制第一电压和第二电压的电压值的大小，以实现2D或3D画面的显示；
触控阶段：为第二电极的各个电极块提供触控扫描信号，以及根据各个电极块所提供的反馈信号来确定触控位置。
可选地，所述触控阶段包括：依次为每一列所述电极块输入触控扫描信号，当为一列所述电极块被输入触控扫描信号时，为其它列所述电极块输入第二电压。
本发明可以实现如下有益效果中的至少一个有益效果和/或其它有益效果：
根据本发明一个实施例的显示装置，不仅可以进行2D显示和3D显示，而且还具有触控功能。特别的是，该显示装置中的第二电极不仅用于对光栅的遮光区的调整，以实现2D显示和3D显示的切换；同时还用于显示装置的触控功能的实现，也即第二电极相当于触控电极(自电容电极)。由此可知，第二电极既是显示电极又充当触控电极，与现有的具有2D、3D以及触控显示功能的显示装置相较而言，体积减薄、成本降低以及提高了产品的透过率。
根据本发明一个实施例的显示装置的驱动方法，时序简单，易于控制。
附图说明
为了更清楚地说明本发明实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单的介绍。应当意识到，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为根据本发明一个实施例的显示装置的结构示意图；
图2为图1所图示的显示装置的A-A截面图；
图3为根据本发明另一个实施例的显示装置的驱动方法的时序图。
其中附图标记为：1、显示面板；11、阵列基板；12、彩膜基板；13、液晶分子；2、光栅；21、第一电极；22、第二电极；23、电致变色层；3、盖板玻璃；4、控制单元；5、电压生成单元；51、第一电压生成模块；52、第二电压生生成模块；6、触控感应单元；7、开关切换单元。
具体实施方式
为使本领域普通技术人员更好地理解本发明的目的、技术方案和优点，下面结合附图和具体实施方式对本发明作进一步详细描述。
结合图1和2所示，根据本发明的一个实施例提供了一种显示装置，该显示装置可以包括显示面板1以及和显示面板1相配合的光栅2。所述光栅2分为交替设置的遮光区和透光区，所述光栅2可以包括依次设置在显示面板1出光面侧的第一电极21、与所述遮光区位置对应的电致变色层23，以及具有多个电极块的第二电极22。在其它实施例中，所述光栅2也可以通过其它不同的方式形成。所述显示装置还可以包括：电压生成单元5、触控感应单元6、控制单元4。所述电压生成单元5用于为第一电极21提供第一电压，为第二电极22提供第二电压。所述控制单元4用于控制所述电压生成单元5所生成的第一电压和第二电压值的大小，以使所述光栅2在2D显示阶段呈透明状态，在3D显示阶段表现为交替设置的遮光区和透光区。在所述光栅2包括电致变色层23的实现方式中，所述控制单元4可以控制所述电压生成单元5所生成的第一电压和第二电压值的大小以使所述电致变色层23在2D显示阶段呈透明状态，在3D显示阶段呈遮光状态。所述触控感应单元6用于在控制单元4的控制下，在触控阶段为第二电极22的各个电极块提供触控扫描信号，以及根据各个电极块所提供的反馈信号来确定触控位置。
需要说明的是，显示面板1通常可以包括阵列基板11、彩膜基板12以及设置在阵列基板11和彩膜基板12之间的液晶分子13。而且在光栅2的出光面侧还可以设置有保护玻璃，即盖板玻璃3。电压生成单元5所生成的第一电压和第二电压的电压值均非唯一的一个值，可以根据不同的需要通过控制单元4来控制电压生成单元5所生成的第一电压和第二电压的电压值的大小。第二电极22的每个电极块相当于一个触控点的坐标，每个电极块为一个自电容电极。
综上，根据上述实施例的显示装置不仅可以进行2D显示和3D显示，而且还具有触控功能。特别的是，第二电极22不仅用于对光栅2的遮光区的调整，以实现2D显示和3D显示的切换；同时还用于显示装置的触控功能的实现，也即第二电极22相当于触控电极(自电容电 极)。由此可知，第二电极22既充当显示电极又充当触控电极，与现有的具有2D、3D以及触控显示功能的显示装置相较而言，厚度减薄、成本降低以及提高了产品的透过率。
可选地，本实施中的第一电极21为面状电极，面状电极不仅容易制备，而且布线简单，时序易于控制。
可选地，所述电压生成单元5包括：第一电压生成模块51和第二电压生成模块52。所述第一电压生成模块51用于生成第一电压给第一电极21；所述第二电压生成模块52用于生成第二电压给第二电极22。从而使得所生成的第一电压和第二电压单独控制，互不干扰。
可选地，电致变色层23的状态是通过第一电极21和第二电极22之间的电场控制的，作为一种实现方式，在2D显示阶段，所述第一电压与第二电压的电压值相等。此时，在第一电极21和第二电极22之间无电场，电致变色层23呈透明状态，即光栅2全部呈透明状态，当来自显示面板1的光透过该光栅2时，由于此时不存在任何光栅，所以可以呈现2D显示画面。在3D显示阶段，所述第一电压与第二电压存的电压值不等，此时在第一电极21和第二电极22之间形成电场。此时电致变色层23呈遮光状态，以形成光栅2的遮光区，没有电致变色层23的部分形成透光区，来自显示面板1的光在该光栅2的作用下，可以呈现3D显示画面。
可选地，显示面板1可以包括成行成列设置的多个像素单元，所述电致变色层23的宽度与所述像素单元的宽度相同，且位置上下对应。也就是说每一列电致变色层23对应一列像素单元。通过对电致变色层23和像素单元的合理设置，可以实现裸眼3D显示的功能。
在一个具体实现中，第二电极22所包括的多个电极块也可以成行成列设置，每一个所述电极块通过单独引线与所述触控感应单元连接。此时，在触控阶段，为每一个电极块输出触控扫描信号，当其中一个电极块感应到触控时，可以通过与其连接的单独的引线将反馈信号传递给触控感应单元，以准确的确定出发生触控的位置。
在一个具体实现中，任意两相邻列电极块之间的间隙与两相邻列像素单元之间的间隙对应，与位于同一列的所述电极块连接的各个引线设于两相邻列电极块之间的间隙处。由于两相邻列电极块之间的间隙为非透光区，因此，将各个引线设置在此处，可以避免引线影响显 示面板1的开口率。
在一个具体实现中，在触控阶段，所述触控感应单元6依次为每一列所述电极块输入触控扫描信号，且其中某一列所述电极块被输入触控扫描信号时，其它列所述电极块保持第二电压。此时，触控感应单元6无需设置多个信号输出端口，因此不仅布线简单，易于实现且成本较低。
可选地，显示装置还可以包括开关切换单元7，该开关切换单元7用于在所述控制单元4的控制下，将所述电压生成单元5提供的第二电压传输给第二电极22，或者将所述触控感应单元6输出的触控扫描信号传输给第二电极22。由此可知，开关切换单元7可以切换触控阶段和显示阶段第二电极22的电压信号的输入。
根据本发明另一个实施例提供了一种显示装置的驱动方法，其中显示装置可以为图1和图2中所图示的显示装置。结合图3所示，该驱动方法包括：
显示阶段：为第一电极21输入第一电压，为第二电极22输入第二电压，并通过控制第一电压和第二电压的电压值的大小，以实现2D或3D画面的显示。
具体地，显示阶段可以包括2D显示阶段和3D显示阶段。在2D显示阶段，所述第一电压与第二电压的电压值可以相等。此时，在第一电极21和第二电极22之间无电场，电致变色层23呈透明状态，即整个光栅2也呈透明状态，当来自显示面板1的光透过该光栅2时，由于没有光栅2的作用，所以可以呈现2D显示画面。在3D显示阶段，所述第一电压与第二电压存的电压值不等。此时在第一电极21和第二电极22之间形成电场，此时电致变色层23呈遮光状态，以形成光栅2的遮光区，光栅2中不包含电致变色层23的部分形成透光区。当来自显示面板1的光透过该光栅2时，在光栅2的作用下可以呈现3D显示画面。
触控阶段：为第二电极22的各个电极块提供触控扫描信号，以及根据各个电极块所提供的反馈信号来确定触控位置。
具体地，触控阶段发生在显示完一帧2D画面或者3D画面后，此时再为第二电极22的各个电极块提供触控扫描信号，以及根据各个电极块所提供的反馈信号来确定触控位置。
作为触控阶段的一种可选实现方式，依次为每一列所述电极块输入触控扫描信号，且为其中某一列所述电极块被输入触控扫描信号时，为其它列所述电极块输入第二电压。此时对施加有触控扫描信号的各个电极块上的信号进行分析，以确定是否发生触控，而未施加触控扫描信号的各个电极块上仍然保持在显示阶段时的电压值，以保证原有的画面显示。通过采用逐列输入触控扫描信号的方式，触控感应单元6无需设置多个信号输出端口，因此不仅布线简单，易于实现且成本较低。
可以理解的是，以上实施方式仅仅是为了说明本发明的原理而采用的示例性实施方式，然而本发明并不局限于此。对于本领域内的普通技术人员而言，在不脱离本发明的精神和实质的情况下，可以做出各种变型和改进，这些变型和改进也视为本发明的保护范围。本发明的保护范围应以所附权利要求的保护范围为准。
本申请所使用的术语“和/或”仅仅是被用来描述一种关联对象的关联关系，表示可以存在三种关系。例如，“A和/或B”可以表示如下这三种情况：单独存在A，同时存在A和B，单独存在B。另外，本文中字符“/”一般表示前后关联对象是一种“或”的关系。
本申请用了诸如“第一”、“第二”、“第三”等之类的措词。在无附加上下文时，使用这样的措词并不旨在暗示排序而实际上用于标识目的。例如短语“第一版本”和“第二版本”未必意味着第一版本恰为第一个版本或者是在第二版本之前创建的或者甚至在第二版本之前请求或者操作第一版本。实际上，这些短语用来标识不同版本。
在权利要求书中，任何置于括号中的附图标记都不应当解释为限制权利要求。术语“包括”并不排除除了权利要求中所列出的元件或步骤之外的元件或步骤的存在。元件前的词语“一”或“一个”并不排除存在多个这样的元件。本发明可以借助于包括若干分离元件的硬件来实现，也可以通过适当编程的软件或固件来实现，或者通过它们的任意组合来实现。
在列举了若干装置的设备或系统权利要求中，这些装置中的一个或多个能够在同一个硬件项目中体现。仅仅某个措施记载在相互不同的从属权利要求中这个事实并不表明这些措施的组合不能被有利地使用。

Claims (12)

  1. 一种显示装置，其包括显示面板以及与显示面板配合的光栅，所述显示装置还包括：电压生成单元、触控感应单元、控制单元，
    所述光栅包括依次设置在显示面板出光面侧的第一电极、以及具有多个电极块的第二电极；
    所述电压生成单元用于为第一电极提供第一电压，为第二电极提供第二电压；
    所述控制单元用于控制所述电压生成单元所生成的第一电压和第二电压值的大小，以使所述光栅在2D显示阶段呈透明状态，在3D显示阶段表现为交替设置的遮光区和透光区；
    在触控阶段，所述触控感应单元用于在控制单元的控制下为第二电极的各个电极块提供触控扫描信号，以及根据各个电极块所提供的反馈信号来确定触控位置。
  2. 根据权利要求1所述的显示装置，其中，所述光栅在所述第一电极和第二电极之间在所述遮光区位置包括电致变色层，所述电致变色层在2D显示阶段呈透明状态，在3D显示阶段呈遮光状态。
  3. 根据权利要求2所述的显示装置，其中，所述显示面板包括成行成列设置的多个像素单元，所述电致变色层的宽度与所述像素单元的宽度相同，且位置上下对应。
  4. 根据权利要求3所述的显示装置，其中，所述第二电极所包括的多个电极块成行成列设置，每一个所述电极块通过单独引线与所述触控感应单元连接。
  5. 根据权利要求4所述的显示装置，其中，任意两相邻列电极块之间的间隙与两相邻列像素单元之间的间隙对应，与位于同一列的所述电极块连接的各个引线设于两相邻列电极块之间的间隙处。
  6. 根据权利要求4所述的显示装置，其中，在触控阶段，所述触控感应单元依次为每一列所述电极块输入触控扫描信号，且其中当一列所述电极块被输入触控扫描信号时，其它列所述电极块保持第二电压。
  7. 根据权利要求1所述的显示装置，其中，所述显示装置还包括开关切换单元，
    所述开关切换单元用于在所述控制单元的控制下，将所述电压生成单元提供的第二电压传输给第二电极，或者将所述触控感应单元输出的触控扫描信号传输给第二电极。
  8. 根据权利要求1所述的显示装置，其中，所述电压生成单元包括：第一电压生成模块和第二电压生成模块；
    所述第一电压生成模块用于生成第一电压给第一电极；
    所述第二电压生成模块用于生成第二电压给第二电极。
  9. 根据权利要1-8中任意一项所述的显示装置，其中，在2D显示阶段，所述第一电压与第二电压的电压值相等；在3D显示阶段，所述第一电压与第二电压存的电压值不等。
  10. 根据权利要1-8中任意一项所述的显示装置，其中，所述第一电极为面状电极。
  11. 一种用于驱动如权利要求1-10中任意一项所述的显示装置的方法，所述方法包括：
    显示阶段：为第一电极输入第一电压，为第二电极输入第二电压，并通过控制第一电压和第二电压的电压值的大小，以实现2D或3D画面的显示；
    触控阶段：为第二电极的各个电极块提供触控扫描信号，以及根据各个电极块所提供的反馈信号来确定触控位置。
  12. 根据权利求11所述的方法，其中，所述触控阶段包括：依次为每一列所述电极块输入触控扫描信号，当为一列所述电极块被输入触控扫描信号时，为其它列所述电极块输入第二电压。
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