技术领域technical field
本发明涉及液晶显示技术领域，特别涉及一种反射板及透明显示装置。The invention relates to the technical field of liquid crystal display, in particular to a reflective plate and a transparent display device.
背景技术Background technique
图1a和图1b是一种现有的透明显示装置及显示原理示意图，该透明显示装置包括：PDLC（polymer dispersed liquid crystal，聚合物分散液晶）器件、导光板150、显示屏（panel）160和光源170。陈列物品110放置于所示PDLC器件的非显示侧。并且，所述PDLC器件包括：第一透明电极120、第二透明电极140，以及设置在所述第一透明电极120和第二透明电极140之间的PDLC130。Figures 1a and 1b are schematic diagrams of an existing transparent display device and its display principle. The transparent display device includes: a PDLC (polymer dispersed liquid crystal, polymer dispersed liquid crystal) device, a light guide plate 150, a display screen (panel) 160 and light source 170 . Display item 110 is placed on the non-display side of the PDLC device shown. Moreover, the PDLC device includes: a first transparent electrode 120 , a second transparent electrode 140 , and a PDLC 130 disposed between the first transparent electrode 120 and the second transparent electrode 140 .
参见图1a，当PDLC130处于关态时，PDLC器件中的PDLC处于散射态、不透光，放入导光板150后该PDLC器件充当反射板，此时只能看到显示屏160中的显示内容。参见图1b，当PDLC130处于开态时，PDLC器件处于透明态，在环境光180的作用下，可看到后方的陈列物品110。基于上述原理，该透明显示装置能实现透明和非透明显示的切换。Referring to Figure 1a, when the PDLC 130 is in the off state, the PDLC in the PDLC device is in a scattering state and is opaque. After being placed in the light guide plate 150, the PDLC device acts as a reflector, and only the display content in the display screen 160 can be seen at this time. . Referring to FIG. 1 b , when the PDLC 130 is in the on state, the PDLC device is in the transparent state, and under the action of the ambient light 180 , the display items 110 behind can be seen. Based on the above principles, the transparent display device can realize switching between transparent and non-transparent display.
但是，上述现有设计存在明显缺陷，这种透明显示装置在切换为透明态时需要环境光源辅助。也就是说，在当前的透明显示应用中，均需用显示屏后方的环境光来支持物体显示。因此，导致整个显示装置结构较为复杂，只能应用于冰柜、橱柜、灯箱等大件物品，较难应用在薄型显示器件，如手机、PAD、笔记本电脑(Notebook)中，限制了其进一步应用。However, there are obvious defects in the above-mentioned existing designs, and the transparent display device needs the assistance of an ambient light source when switching to a transparent state. That is to say, in current transparent display applications, ambient light behind the display screen is required to support object display. Therefore, the structure of the entire display device is relatively complicated, and it can only be applied to large items such as freezers, cabinets, and light boxes, and it is difficult to apply to thin display devices, such as mobile phones, PADs, and notebook computers (Notebook), which limits its further application.
发明内容Contents of the invention
（一）要解决的技术问题(1) Technical problems to be solved
本发明要解决的技术问题是：如何提供一种反射板及透明显示装置，以克服透明显示装置对环境光的依赖，简化透明显示装置的器件结构。The technical problem to be solved by the present invention is: how to provide a reflector and a transparent display device to overcome the dependence of the transparent display device on ambient light and simplify the device structure of the transparent display device.
（二）技术方案(2) Technical solutions
为解决上述技术问题，本发明提供一种反射板，其包括：第一基板、第二基板，以及设置于所述第一基板和第二基板之间的液晶层；In order to solve the above technical problems, the present invention provides a reflector, which includes: a first substrate, a second substrate, and a liquid crystal layer disposed between the first substrate and the second substrate;
所述液晶层中的液晶分子呈胆甾相。The liquid crystal molecules in the liquid crystal layer are in cholesteric phase.
其中，所述液晶层还包括手性添加剂，所述手性添加剂混合于所述液晶分子之间。Wherein, the liquid crystal layer further includes a chiral additive, and the chiral additive is mixed between the liquid crystal molecules.
其中，所述手性添加剂在所述液晶分子中的浓度C的计算公式如下：Wherein, the calculation formula of the concentration C of the chiral additive in the liquid crystal molecules is as follows:
C=1/(P×HTP);C=1/(P×HTP);
P=λ/Δn;P=λ/Δn;
其中，P为所述液晶分子的螺距，HTP为所述液晶分子固有的扭曲能量常数，λ为所述反射板选择反射的光的波长，Δn为所述液晶分子的双折射率。Wherein, P is the helical pitch of the liquid crystal molecules, HTP is the inherent twist energy constant of the liquid crystal molecules, λ is the wavelength of light selectively reflected by the reflector, and Δn is the birefringence of the liquid crystal molecules.
其中，所述第一基板包括：第一衬底基板，设置在所述第一衬底基板的靠近所述液晶层一侧的第一透明电极层；Wherein, the first substrate includes: a first base substrate, a first transparent electrode layer disposed on a side of the first base substrate close to the liquid crystal layer;
所述第二基板包括：第二衬底基板，设置在所述第二衬底基板的靠近所述液晶层一侧的第二透明电极层；The second substrate includes: a second base substrate, a second transparent electrode layer disposed on a side of the second base substrate close to the liquid crystal layer;
所述第一透明电极层和第二透明电极层用于形成改变所述液晶分子的织构状态的电场。The first transparent electrode layer and the second transparent electrode layer are used to form an electric field that changes the texture state of the liquid crystal molecules.
其中，所述第一基板还包括，设置在所述第一透明电极层的靠近所述液晶层一侧的第一取向层；Wherein, the first substrate further includes a first alignment layer disposed on a side of the first transparent electrode layer close to the liquid crystal layer;
所述第二基板还包括，设置在所述第二透明电极层的靠近所述液晶层一侧的第二取向层；The second substrate further includes a second alignment layer disposed on a side of the second transparent electrode layer close to the liquid crystal layer;
所述第一取向层和第二取向层用于对所述液晶分子进行反平行取向。The first alignment layer and the second alignment layer are used for antiparallel alignment of the liquid crystal molecules.
本发明还提供一种包括所述反射板的透明显示装置，所述透明显示装置还包括：导光板、光源和显示屏；The present invention also provides a transparent display device including the reflecting plate, and the transparent display device further includes: a light guide plate, a light source and a display screen;
所述反射板设置在所述导光板上设置有网点的一侧；The reflector is arranged on the side of the light guide plate where the dots are arranged;
所述显示屏设置在所述导光板的出光侧；The display screen is arranged on the light emitting side of the light guide plate;
所述光源设置在所述导光板的入光侧。The light source is arranged on the light incident side of the light guide plate.
其中，所述导光板采用纳米导光板。Wherein, the light guide plate is a nano light guide plate.
其中，所述透明显示装置还包括：PCB板、主板和电源板；Wherein, the transparent display device further includes: a PCB board, a main board and a power board;
所述反射板的电源信号线和控制信号线均直接与所述PCB板相连接；Both the power signal line and the control signal line of the reflector are directly connected to the PCB board;
所述显示屏的电源信号线和控制信号线均直接与所述PCB板相连接；Both the power signal line and the control signal line of the display screen are directly connected to the PCB board;
所述背光源的电源信号线和控制信号线均直接与所述PCB板相连接；Both the power signal line and the control signal line of the backlight are directly connected to the PCB board;
所述PCB板的电源信号线和控制信号线与所述主板相连接；The power signal line and the control signal line of the PCB board are connected with the main board;
所述主板的电源信号线与所述电源板相连接。The power signal line of the motherboard is connected with the power board.
其中，所述PCB板上设置有用于控制显示屏扫描线信号和数据线信号输出的时序控制芯片；Wherein, the PCB board is provided with a timing control chip for controlling the output of the display screen scan line signal and data line signal;
所述时序控制芯片输出的时序控制信号与用于控制所述反射板的切换控制信号配合，以令所述透明显示装置随显示画面的改变而在透明显示状态和非透明显示状态之间切换。The timing control signal output by the timing control chip cooperates with the switching control signal used to control the reflector, so that the transparent display device switches between a transparent display state and a non-transparent display state as the display screen changes.
其中，所述PCB板、主板和电源板设置在所述透明显示装置的透明显示区域之外的区域。Wherein, the PCB board, the main board and the power board are arranged in an area outside the transparent display area of the transparent display device.
（三）有益效果(3) Beneficial effects
本发明所述反射板及透明显示装置，在反射板中设置呈胆甾相的 液晶分子，通过改变该液晶分子的织构状态，可以令透明显示装置在透明显示和非透明显示之间切换，并在透明显示时反射一部分光线作为背光源，同时透射另外一部分光线作为环境光源，从而可以在无环境光源辅助的情况下，实现透明显示和非透明显示的灵活切换；并且，由于省略了环境光源辅助设施，从而简化了透明显示装置的器件结构，使其更加轻薄化，有利于将该透明显示装置应用于手机、PAD（平板电脑）、Notebook（笔记本电脑）等小件电子产品中。The reflection plate and the transparent display device of the present invention, the liquid crystal molecules in the cholesteric phase are arranged in the reflection plate, and by changing the texture state of the liquid crystal molecules, the transparent display device can be switched between transparent display and non-transparent display, And in the case of transparent display, part of the light is reflected as the backlight source, and another part of the light is transmitted as the ambient light source, so that the flexible switching between transparent display and non-transparent display can be realized without the assistance of ambient light source; and, because the ambient light source is omitted Auxiliary facilities, thereby simplifying the device structure of the transparent display device, making it lighter and thinner, which is conducive to the application of the transparent display device in small electronic products such as mobile phones, PADs (tablet computers), and Notebooks (notebook computers).
附图说明Description of drawings
图1a和图1b是一种现有的透明显示装置及显示原理示意图；Figure 1a and Figure 1b are schematic diagrams of an existing transparent display device and its display principle;
图2a和图2b是本发明实施例1的反射板及其光路图；Fig. 2a and Fig. 2b are the reflecting plate and its optical path diagram of Embodiment 1 of the present invention;
图2c是本发明实施例1的反射板的结构示意图；Fig. 2c is a schematic structural view of the reflecting plate of Embodiment 1 of the present invention;
图3a是本发明实施例2的透明显示装置的局部结构示意图；FIG. 3a is a schematic diagram of a partial structure of a transparent display device according to Embodiment 2 of the present invention;
图3b是本发明实施例2的透明显示装置的电路连接示意图。Fig. 3b is a schematic diagram of the circuit connection of the transparent display device according to Embodiment 2 of the present invention.
具体实施方式Detailed ways
下面结合附图和实施例，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。The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.
本发明方案在实现透明显示和正常显示切换的同时，去掉了环境光源辅助设施，简化了器件结构，可使透明显示装置进一步应用在薄型显示器件，扩展了透明显示的实际应用。以下结合实施例和附图对本发明进行详细说明。The solution of the present invention realizes switching between transparent display and normal display, removes the auxiliary facilities of ambient light source, simplifies the structure of the device, enables the transparent display device to be further applied to thin display devices, and expands the practical application of transparent display. The present invention will be described in detail below in conjunction with the embodiments and the accompanying drawings.
实施例1Example 1
为了实现在无环境光源时能实现透明显示，需对背光源结构及光学设计作进一步优化，本发明提供了一种反射板。该反射板具有如下特征：In order to realize transparent display when there is no ambient light source, it is necessary to further optimize the structure and optical design of the backlight source. The present invention provides a reflector. The reflector has the following characteristics:
1）透明显示时，该反射板可反射一部分光线作为显示屏的背光源使用，而透射另外一部分光线作为环境光源使用；1) When displaying transparently, the reflector can reflect a part of the light to be used as the backlight of the display screen, and transmit another part of the light to be used as the ambient light source;
2）非透明显示时，该反射板可反射大部分光线作为显示屏的背光源使用，而散射一部分光线出去。2) When the display is non-transparent, the reflector can reflect most of the light to be used as the backlight of the display screen, and scatter part of the light to go out.
图2a和图2b是本发明实施例1的反射板及其光路图，其中，所述反射板包括：第一基板221、第二基板222，以及设置于所述第一基板221和第二基板222之间的液晶层230。所述液晶层230中的液晶分子呈胆甾相。Fig. 2a and Fig. 2b are the reflecting plate and its optical path diagram according to Embodiment 1 of the present invention, wherein, the reflecting plate comprises: a first substrate 221, a second substrate 222, and 222 between the liquid crystal layer 230 . The liquid crystal molecules in the liquid crystal layer 230 are in cholesteric phase.
呈胆甾相的液晶分子，为左旋向液晶分子或者右旋向液晶分子。以左旋向液晶分子为例，在平面织构状态下，该液晶分子平行排列在平面内，但相邻平面中液晶分子的取向方向稍有变化，沿平面的法线方向作螺旋状变动，取向方向经历360°变化的距离称作螺矩P。这样的左旋向液晶分子能对入射光进行一部分的布拉格反射，反射光为左旋圆偏振光，而透射右旋圆偏振光，从而实现了选择性反射。The liquid crystal molecules in the cholesteric phase are left-handed liquid crystal molecules or right-handed liquid crystal molecules. Taking left-handed liquid crystal molecules as an example, in the state of planar texture, the liquid crystal molecules are arranged in parallel in the plane, but the orientation direction of the liquid crystal molecules in the adjacent plane changes slightly, and changes helically along the normal direction of the plane. The distance over which the direction undergoes a 360° change is called the pitch P. Such left-handed liquid crystal molecules can perform partial Bragg reflection on incident light, the reflected light is left-handed circularly polarized light, and the right-handed circularly polarized light is transmitted, thereby realizing selective reflection.
为了设定选择反射的光的波长λ，一种优选的实施方式是在所述液晶分子中混合预定浓度C的手性添加剂，通过添加所述手性添加剂可以改变所述液晶分子的螺距P，进而改变所述反射板选择反射的光的波长λ。In order to set the wavelength λ of the selectively reflected light, a preferred embodiment is to mix a chiral additive with a predetermined concentration C in the liquid crystal molecules, and the helical pitch P of the liquid crystal molecules can be changed by adding the chiral additives, Further, the wavelength λ of the light selectively reflected by the reflecting plate is changed.
当λ一定时，所述手性添加剂的浓度C的计算公式如下：When λ is constant, the calculation formula of the concentration C of the chiral additive is as follows:
C=1/(P×HTP);C=1/(P×HTP);
P=λ/Δn;P=λ/Δn;
其中，HTP为所述液晶分子固有的扭曲能量常数，Δn为所述液晶分子的双折射率。Wherein, HTP is the inherent twist energy constant of the liquid crystal molecules, and Δn is the birefringence of the liquid crystal molecules.
根据上述原理，通过在所述液晶层230的不同区域设置不同浓度的所述手性添加剂，可以使所述液晶层230中不同区域的液晶分子的螺距呈梯度值分布，进而可以实现对预定波长范围内的光进行反射。这样，通过设置所述液晶层230选择反射的光的波长范围大于所述光源发出的光的波长范围，可以提高对光源发出的光的利用率。According to the above principle, by setting different concentrations of the chiral additives in different regions of the liquid crystal layer 230, the pitch of the liquid crystal molecules in different regions of the liquid crystal layer 230 can be distributed in a gradient value, and then the predetermined wavelength can be adjusted. Light in the range is reflected. In this way, by setting the wavelength range of the light selectively reflected by the liquid crystal layer 230 to be larger than the wavelength range of the light emitted by the light source, the utilization rate of the light emitted by the light source can be improved.
其中，在所述液晶层230的不同区域设置不同浓度的所述手性添 加剂可以采用紫外光照射掺杂所述手性添加剂的液晶分子、可聚合单体、紫外光吸收剂以及光引发剂形成的混合物，由于所述手性添加剂在不同的紫外光强度下其分子扩散速度不同，可以使靠近紫外光源处的液晶分子中所述手性添加剂的浓度较高，远离紫外光源处的液晶分子中所述手性添加剂的浓度较低，并通过可聚合单体的聚合将不同区域的胆甾相液晶的螺距进行固定，从而形成了较为稳定的不同区域的液晶螺距梯度分布。胆甾相液晶螺距梯度分布的形成也有其它制备方式，在此不再赘述。Wherein, setting different concentrations of the chiral additives in different regions of the liquid crystal layer 230 can use ultraviolet light to irradiate the liquid crystal molecules doped with the chiral additives, polymerizable monomers, ultraviolet light absorbers, and photoinitiated Because the molecular diffusion speed of the chiral additive is different under different ultraviolet light intensities, the concentration of the chiral additive in the liquid crystal molecules near the ultraviolet light source can be higher, and the liquid crystal at the place far away from the ultraviolet light source The concentration of the chiral additive in the molecule is relatively low, and the helical pitch of the cholesteric phase liquid crystal in different regions is fixed through the polymerization of the polymerizable monomer, thereby forming a relatively stable gradient distribution of liquid crystal helical pitch in different regions. There are also other preparation methods for the formation of the pitch gradient distribution of the cholesteric liquid crystal, which will not be repeated here.
图2c是所述第一基板221的结构示意图，如同2c所示，所述第一基板包括：第一衬底基板221a，设置在所述第一衬底221a的靠近所述液晶层230一侧的第一透明电极层221b，以及设置在所述第一透明电极层221b的靠近所述液晶层230一侧的第一取向层221c。Figure 2c is a schematic structural view of the first substrate 221, as shown in Figure 2c, the first substrate includes: a first substrate substrate 221a, disposed on the side of the first substrate 221a close to the liquid crystal layer 230 The first transparent electrode layer 221b, and the first alignment layer 221c disposed on the side of the first transparent electrode layer 221b close to the liquid crystal layer 230 .
所述第二基板222与所述第一基板221结构相同，其包括：第二衬底基板，设置在所述第二衬底基板的靠近所述液晶层230一侧的第二透明电极层，以及设置在所述第二透明电极层的靠近所述液晶层230一侧的第二取向层。The second substrate 222 has the same structure as the first substrate 221, which includes: a second base substrate, a second transparent electrode layer disposed on a side of the second base substrate close to the liquid crystal layer 230, and a second alignment layer disposed on a side of the second transparent electrode layer close to the liquid crystal layer 230 .
其中，所述第一透明电极层221b和第二透明电极层用于形成改变所述液晶分子的织构状态的电场。所述第一取向层221c和第二取向层用于对所述液晶分子进行反平行取向。需要说明的是，所述第一取向层221c和第二取向层也可以省略，这时可以采用其他方式对所述液晶分子进行反平行取向，比如采用光照方式。Wherein, the first transparent electrode layer 221b and the second transparent electrode layer are used to form an electric field that changes the texture state of the liquid crystal molecules. The first alignment layer 221c and the second alignment layer are used for anti-parallel alignment of the liquid crystal molecules. It should be noted that the first alignment layer 221c and the second alignment layer can also be omitted, and in this case, the liquid crystal molecules can be antiparallel aligned in other ways, such as by using light.
以下对本发明实施例所述反射板的工作原理说明如下：The working principle of the reflecting plate described in the embodiment of the present invention is described as follows:
参见图2a，仍旧假设所述液晶层230中的液晶分子为左旋向液晶分子，在默认状态下（即非通电状态下）第一取向层和第二取向层对其进行反平行取向后，所述左旋向液晶分子呈平面织构，该织构状态下，所述左旋向液晶分子能对光源210发出的入射光进行一部分的布拉格反射，反射光为左旋圆偏振光，而透射光为右旋圆偏振光，从而 实现选择性反射。反射的左旋圆偏振光经过导光板后较均匀的出射到显示屏，可以作为显示屏的背光源；而被透射的右旋圆偏振光，可以提供环境光，因此，可看到屏后方的物体。Referring to FIG. 2a, it is still assumed that the liquid crystal molecules in the liquid crystal layer 230 are left-handed liquid crystal molecules. In the default state (that is, in the non-energized state), after the first alignment layer and the second alignment layer perform antiparallel alignment on them, the The left-handed liquid crystal molecules have a planar texture. In this textured state, the left-handed liquid crystal molecules can partly Bragg reflect the incident light emitted by the light source 210. The reflected light is left-handed circularly polarized light, while the transmitted light is right-handed. Circularly polarized light for selective reflection. The reflected left-handed circularly polarized light passes through the light guide plate and exits to the display screen evenly, which can be used as the backlight of the display screen; while the transmitted right-handed circularly polarized light can provide ambient light, so objects behind the screen can be seen .
参见图2b，当通过所述第一透明电极和第二透明电极对所述左旋向液晶分子施加电场时，所述左旋向液晶分子的分子织构变为焦锥织构，液晶分子变为随意分布的状态，光源210的光线经过所述左旋向液晶分子时，会发生散射和反射。由于发生散射，显示屏后方的物体无法看清；而反射的光线，仍能提供显示屏背光，从而实现了非透明显示。Referring to Figure 2b, when an electric field is applied to the left-handed liquid crystal molecules through the first transparent electrode and the second transparent electrode, the molecular texture of the left-handed liquid crystal molecules becomes a focal conic texture, and the liquid crystal molecules become random In the distributed state, when the light from the light source 210 passes through the left-handed liquid crystal molecules, it will be scattered and reflected. Objects behind the display cannot be seen clearly due to scattering; while the reflected light can still provide the backlight of the display, thereby realizing a non-transparent display.
本实施例所述反射板，通过改变呈胆甾相的液晶分子的织构状态，可以在无环境光源辅助的情况下，实现透明显示和非透明显示的灵活切换。同时，本实施例所述反射板在非通电时为透明显示状态，有利于降低透明显示装置的功耗。The reflection plate in this embodiment can realize flexible switching between transparent display and non-transparent display without the assistance of ambient light source by changing the texture state of the cholesteric liquid crystal molecules. At the same time, the reflector in this embodiment is in a transparent display state when no power is applied, which is beneficial to reduce the power consumption of the transparent display device.
实施例2Example 2
图3a是本发明实施例2的透明显示装置的局部结构示意图，如图3a所示，所述透明显示装置除了包括实施例1所述的反射板340外，还包括：导光板320、光源330和显示屏310。Fig. 3a is a schematic diagram of a partial structure of a transparent display device according to Embodiment 2 of the present invention. As shown in Fig. 3a, in addition to the reflective plate 340 described in Embodiment 1, the transparent display device also includes: a light guide plate 320, a light source 330 and display screen 310 .
具体的，所述反射板340平行设置在所述导光板320上设置有网点的一侧；所述显示屏310平行设置在所述导光板320的出光侧；所述光源330设置在所述导光板320的入光侧。 Specifically, the reflection plate 340 is arranged in parallel on the side where the dots are arranged on the light guide plate 320; the display screen 310 is arranged in parallel on the light emitting side of the light guide plate 320; The light incident side of the light plate 320 . the
其中，所述导光板320需要具有较高的透过率，可以采用超薄高透导光板，优选采用纳米导光板。所述导光板320一般为侧入式导光板。所述背光源330可以采用LED（发光二极管）灯条，并且所述LED灯条可以设置在所述导光板320的两侧、单侧或四侧，也可以设置在所述导光板320的边角上。本实施例中，所述LED灯条对称设置在所述导光板320的两侧。Wherein, the light guide plate 320 needs to have a relatively high transmittance, and an ultra-thin and highly transparent light guide plate can be used, preferably a nano light guide plate. The light guide plate 320 is generally a side-type light guide plate. The backlight 330 can adopt LED (Light Emitting Diode) light strips, and the LED light strips can be set on two sides, one side or four sides of the light guide plate 320, or can be set on the sides of the light guide plate 320 corner. In this embodiment, the LED light bars are arranged symmetrically on both sides of the light guide plate 320 .
图3b是本发明实施例2的透明显示装置的电路连接示意图，如图3b所示，所述透明显示装置进一步包括：PCB（印刷电路板）板350、主板360和电源板370。FIG. 3b is a schematic diagram of the circuit connection of the transparent display device according to Embodiment 2 of the present invention. As shown in FIG.
具体的，所述反射板340的电源信号线和控制信号线均直接与所述PCB板350相连接；所述显示屏310的电源信号线和控制信号线均直接与所述PCB板350相连接；所述背光源330的电源信号线和控制信号线均直接与所述PCB板350相连接。所述PCB板350的电源信号线和控制信号线与所述主板360相连接；所述主板360的电源信号线与所述电源板370相连接。Specifically, the power signal lines and control signal lines of the reflector 340 are directly connected to the PCB 350; the power signal lines and control signal lines of the display screen 310 are directly connected to the PCB 350 ; The power signal lines and control signal lines of the backlight 330 are directly connected to the PCB board 350 . The power signal lines and control signal lines of the PCB board 350 are connected to the main board 360 ; the power signal lines of the main board 360 are connected to the power board 370 .
其中，所述PCB板350上设置有T-con时序控制芯片，所述T-con时序控制芯片用于控制显示屏扫描线信号和数据线信号输出。所述反射板340在透明显示状态和非透明显示状态之间的切换，主要是通过切换控制信号来控制是否切断或提供电源来实现，因此，只要一个外置电源开关即可，或内置一个带红外接收器的光敏开关，通过外部的红外遥控开关进行切换控制。当所述反射板340的切换要随着特定显示画面的改变而改变，可将其控制开关与T-con时序控制芯片进行整合成一个控制芯片，通过该控制芯片可以令所述时序控制芯片输出的时序控制信号用于控制所述反射板的切换控制信号，进而令所述透明显示装置随显示画面的改变而在透明显示状态和非透明显示状态之间切换。比如，当显示画面为在水中游动的金鱼时，切换至透明显示状态，从而令透明显示装置后方的水藻、卵石等实景作为上述显示画面的背景，以营造虚实结合的显示效果；而当显示画面为草原风光时，切换至非透明显示装置，按照普通的显示方式进行显示。Wherein, the PCB board 350 is provided with a T-con timing control chip, and the T-con timing control chip is used to control the output of the display screen scan line signal and data line signal. The switch between the transparent display state and the non-transparent display state of the reflector 340 is mainly realized by switching the control signal to control whether to cut off or provide power. Therefore, only one external power switch is required, or a built-in The photosensitive switch of the infrared receiver is switched and controlled by an external infrared remote control switch. When the switching of the reflector 340 is to be changed with the change of the specific display screen, its control switch and the T-con timing control chip can be integrated into a control chip, through which the timing control chip can be used to make the output of the timing control chip The timing control signal is used to control the switching control signal of the reflector, so that the transparent display device switches between a transparent display state and a non-transparent display state as the display screen changes. For example, when the display screen is a goldfish swimming in the water, switch to the transparent display state, so that the real scene such as algae and pebbles behind the transparent display device can be used as the background of the above display screen to create a display effect combining virtual and real; When the picture is grassland scenery, it is switched to a non-transparent display device and displayed in a common display mode.
本实施例中，所述主板360与所述电源板370集成设置于同一电路板上，以提高所述显示装置的集成度，减小其体积。所述透明显示 装置可以是冰柜、橱柜、灯箱等大件物品，也可以视手机、PAD、Notebook等。同时，所述PCB板350、主板360和电源板370优选设置在所述透明显示装置的透明显示区域之外的区域，比如放入手机或PAD的显示屏的空余周边，或者显示器的底座，或者笔记本电脑的键盘下方区域等。In this embodiment, the main board 360 and the power board 370 are integrated on the same circuit board, so as to improve the integration degree of the display device and reduce its volume. The transparent display device can be a large item such as a freezer, a cabinet, a light box, or a mobile phone, a PAD, a Notebook, etc. Simultaneously, described PCB board 350, main board 360 and power board 370 are preferably arranged in the area outside the transparent display area of described transparent display device, such as putting into the vacant periphery of the display screen of mobile phone or PAD, or the base of display, or The area under the keyboard of a laptop, etc.
本发明实施例所述反射板及透明显示装置，在反射板中设置呈胆甾相的液晶分子，通过改变该液晶分子的织构状态，可以令透明显示装置在透明显示和非透明显示之间切换，并在透明显示时反射一部分光线作为背光源，同时透射另外一部分光线作为环境光源，从而可以在无环境光源辅助的情况下，实现透明显示和非透明显示的灵活切换；并且，由于省略了环境光源辅助设施，从而简化了透明显示装置的器件结构，使其更加轻薄化，有利于将该透明显示装置应用于手机、PAD（平板电脑）、Notebook（笔记本电脑）等小件电子产品中。The reflection plate and the transparent display device described in the embodiment of the present invention, the liquid crystal molecules in the cholesteric phase are arranged in the reflection plate, and by changing the texture state of the liquid crystal molecules, the transparent display device can be made between transparent display and non-transparent display switch, and reflect a part of the light as the backlight during transparent display, and at the same time transmit another part of the light as the ambient light source, so that the flexible switching between transparent display and non-transparent display can be realized without the assistance of the ambient light source; and, due to the omission of Auxiliary facilities for ambient light sources, thereby simplifying the device structure of the transparent display device and making it lighter and thinner, which is conducive to the application of the transparent display device in small electronic products such as mobile phones, PADs (tablet computers), and Notebooks (notebook computers).
以上实施方式仅用于说明本发明，而并非对本发明的限制，有关技术领域的普通技术人员，在不脱离本发明的精神和范围的情况下，还可以做出各种变化和变型，因此所有等同的技术方案也属于本发明的范畴，本发明的专利保护范围应由权利要求限定。The above embodiments are only used to illustrate the present invention, but not to limit the present invention. Those of ordinary skill in the relevant technical field can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, all Equivalent technical solutions also belong to the category of the present invention, and the scope of patent protection of the present invention should be defined by the claims.
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| CN201310151739.8AExpired - Fee RelatedCN103217827B (en) | 2013-04-27 | 2013-04-27 | Transparent display device |
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