CN103293747B - Transparent liquid crystal display device - Google Patents
Transparent liquid crystal display device Download PDFInfo
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- CN103293747B CN103293747B CN201210224512.7A CN201210224512A CN103293747B CN 103293747 B CN103293747 B CN 103293747B CN 201210224512 A CN201210224512 A CN 201210224512A CN 103293747 B CN103293747 B CN 103293747B
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Abstract
A kind of transparent liquid crystal display device, described transparent liquid crystal display device has multiple pixel cell, and described transparent liquid crystal display device comprises: the first liquid crystal layer, and is positioned at the first polaroid above described first liquid crystal layer; Be positioned at the transparent light guide plate below described first liquid crystal layer, described transparent light guide plate side backlight, is provided with the second polaroid between described backlight and transparent light guide plate; Be arranged at the second liquid crystal layer below described transparent light guide plate, the below of described second liquid crystal layer is provided with the 3rd polaroid.Transparent liquid crystal display device of the present invention, can the transparent liquid crystal indicator of simple and effective control, makes it have higher contrast and good Transparence Display effect.
Description
Technical field
The present invention relates to field of liquid crystal display, particularly a kind of transparent liquid crystal display device.
Background technology
Liquid crystal display is little with volume, lightweight, and the advantages such as Low emissivity are widely used in various field.
Display panels is topmost ingredient in liquid crystal display.The principle of work of liquid crystal display is: the deflection angle changing liquid crystal molecule by changing the voltage be applied on liquid crystal layer, thus controls polarized light sense of rotation and polarization state, to realize the change of liquid crystal display display state.
Please refer to Fig. 1, the structure of existing display panels mainly comprises: array base palte 10; The color membrane substrates 12 be oppositely arranged with described array base palte 10; Liquid crystal layer 11 between described array base palte 10 and color membrane substrates 12; Be positioned at the upper polaroid 13 above described color membrane substrates 12; And the lower polaroid 16 be positioned at below described array base palte 10, described upper polaroid 13 is vertical with the polarization direction of lower polaroid 16.
Wherein, described array base palte 10 has pixel electrode, described color membrane substrates 12 has public electrode, by apply voltage on described pixel electrode and public electrode after, owing to having electric potential difference between described pixel electrode and public electrode, the liquid crystal molecule in liquid crystal layer 11 deflects under the effect of above-mentioned electric potential difference, thus controls polarization direction and the polarization state of polarized light, light through lower polaroid 16 is deflected in liquid crystal layer 11, is finally penetrated by upper polaroid 13.
Along with the development of technology, in order to meet the different demands of people for liquid crystal indicator, be proposed transparent liquid crystal indicator, please refer to Fig. 2, the transparent liquid crystal display device of prior art, comprising: backlight 200; Be positioned at the transparent light guide plate 203 of described backlight 200 side; The first polaroid 201 between described light guide plate 203 and backlight 200; Be positioned at the array base palte 205 above described light guide plate 203; Be positioned at the color membrane substrates 209 above described array base palte 205; The liquid crystal layer 207 in region between described array base palte 205 and color membrane substrates 209, has multiple liquid crystal molecule 206 in described liquid crystal layer 207; Be positioned at the second polaroid 211 above described color membrane substrates 209.
People can see through the transparent liquid crystal display device shown in Fig. 2 the article being positioned over its behind, and the panel of transparent liquid crystal display device can also show information, this transparent liquid crystal display device can apply to show window display, client can pass through transparent liquid crystal display device and sees the commodity be positioned at thereafter, simultaneously can the relevant information of display of commodity on the panel of transparent liquid crystal display device, very convenient.
But the transparent liquid crystal display device of the prior art shown in Fig. 2, backlight 200 enters transparent liquid crystal display device by uniform light after light guide plate 203, the brightness of image can be improved, but, because this transparent display can not turn off back side surround lighting through panel, so when image will show black state, and the words that the brightness of back side surround lighting is higher, black state in this image is owing to there being the existence of back side surround lighting, and black state is black not, thus the serious contrast reducing display.Namely the frame while cannot solving good Transparence Display in prior art on liquid crystal panel also possesses the technical matters of higher contrast.
In order to meet the demand of user further, how simply effectively controlling transparent liquid crystal indicator, make it while having higher clarity, the figure of display has higher contrast, becomes the problem needing solution badly.
Summary of the invention
The problem that the present invention solves is to provide a kind of transparent liquid crystal display device, can the transparent liquid crystal indicator of simple and effective control, and make it while having higher clarity, the figure of display has higher contrast.
For solving the problem, The embodiment provides a kind of transparent liquid crystal display device, described transparent liquid crystal display device has multiple pixel cell, and described transparent liquid crystal display device comprises:
First liquid crystal layer, and be positioned at the first polaroid above described first liquid crystal layer;
Be positioned at the transparent light guide plate below described first liquid crystal layer;
Be positioned at the backlight of described transparent light guide plate side, between described transparent light guide plate and backlight, be provided with the second polaroid;
Be arranged at the second liquid crystal layer below described transparent light guide plate, the below of described second liquid crystal layer is provided with the 3rd polaroid.
Alternatively, multiple pixel cells display or clear state display in GTG respectively of described transparent liquid crystal display device, makes described transparent liquid crystal display device subregion display graphics and subregion is transparent.
Alternatively, when the transparent state of described pixel cell shows, the light of backlight, after the first liquid crystal layer, can not pass the first polaroid, and ambient light is after the second liquid crystal layer, the first liquid crystal layer, through the first polaroid.
Alternatively, described GTG display comprises the display of white state and the display of black state.
Alternatively, when described pixel cell is the display of white state, when the light of backlight is after the first liquid crystal layer, through the first polaroid.
Alternatively, described pixel cell darkly state display time, the light of backlight, after the first liquid crystal layer, can not pass the first polaroid, and ambient light is after the second liquid crystal layer, the first liquid crystal layer, can not pass the first polaroid.
Alternatively, the first upper substrate and the first infrabasal plate, described first liquid crystal layer is sandwiched between the first upper substrate and the first infrabasal plate, forms the first liquid crystal panel.
Alternatively, described first upper substrate is color membrane substrates.
Alternatively, described first liquid crystal panel is active drive type liquid crystal panel.
Alternatively, described first liquid crystal panel can be the display modes such as TN type, FFS type or IPS type.
Alternatively, described first infrabasal plate is array base palte, described first infrabasal plate is provided with many first sweep traces be parallel to each other in the side near the first liquid crystal layer, first data line vertical with described first sweep trace with many, described many first sweep traces and the first data line intersection limit multiple first sub-pixel unit.
Alternatively, the second upper substrate and the second infrabasal plate, described second liquid crystal layer is sandwiched between the second upper substrate and the second infrabasal plate and forms the second liquid crystal panel.
Alternatively, described second liquid crystal panel is active drive type liquid crystal panel.
Alternatively, described second liquid crystal panel can be the display modes such as TN type, FFS type or IPS type.
Alternatively, described second infrabasal plate is provided with many second sweep traces be parallel to each other near the side of the second liquid crystal layer, second data line vertical with described second sweep trace with many, described many second sweep traces and the second data line intersection limit multiple second sub-pixel unit.
Alternatively, described first sub-pixel unit and described second sub-pixel unit one_to_one corresponding are arranged.
Alternatively, described second liquid crystal panel is passive driving type liquid crystal panel.
Alternatively, described second upper substrate is provided with many first electrodes be parallel to each other near the side of the second liquid crystal layer, described second infrabasal plate is provided with many second electrodes be parallel to each other near the side of the second liquid crystal layer, described first electrode vertical is in described second electrode, and the region that described first electrode and the second electrode intersect forms multiple second sub-pixel unit.
Alternatively, described first sub-pixel unit and described second sub-pixel unit one_to_one corresponding are arranged.
Compared with prior art, embodiments of the invention have the following advantages:
In embodiments of the invention, transparent liquid crystal display device comprises the first liquid crystal layer, be positioned at the second liquid crystal layer below described first liquid crystal layer, be positioned at the first polaroid above described first liquid crystal layer, the second polaroid between backlight and the first liquid crystal layer, and the 3rd polaroid be positioned at below described second liquid crystal layer, according to the type of liquid crystal layer, the type of polaroid, whether conservative control surround lighting is by the second liquid crystal layer and/or the first liquid crystal layer, whether control the light of backlight by the first liquid crystal layer, reach the liquid crystal indicator that simple and effective control is transparent, make it while having higher transparency, the figure of display has higher contrast.
Accompanying drawing explanation
Fig. 1 is the cross-sectional view of the display panels of prior art;
Fig. 2 is the cross-sectional view of the transparent liquid crystal display device of prior art;
Fig. 3 is the cross-sectional view of transparent liquid crystal display device in first embodiment of the invention;
Fig. 4 is when in first embodiment of the invention, the pixel cell of transparent liquid crystal display device is the black state display in GTG display, the operating diagram of the pixel cell of transparent liquid crystal display device;
Fig. 5 is when in first embodiment of the invention, the pixel cell of transparent liquid crystal display device is the white state display in GTG display, the first operating diagram of the pixel cell of transparent liquid crystal display device;
Fig. 6 is when in first embodiment of the invention, the pixel cell of transparent liquid crystal display device is the white state display in GTG display, the second operating diagram of the pixel cell of transparent liquid crystal display device;
Fig. 7 is when in first embodiment of the invention, the transparent state of the pixel cell of transparent liquid crystal display device shows, the operating diagram of the pixel cell of transparent liquid crystal display device;
Fig. 8 is the cross-sectional view of transparent liquid crystal display device in second embodiment of the invention;
Fig. 9 is the first data line of the first infrabasal plate in second embodiment of the invention and the schematic diagram of the first sweep trace;
Figure 10 is the first electrode of the second liquid crystal panel of passive driving type in second embodiment of the invention and the schematic diagram of the second electrode;
Figure 11 is the operating diagram of the transparent liquid crystal display device that the embodiment of the present invention is formed.
Embodiment
As described in background, the transparent liquid crystal display device of prior art cannot solve Transparence Display higher while frame on display panels also possess the technical matters of higher contrast.
After research, inventor finds, by comprising the transparent liquid crystal display device of two liquid crystal layers, can assist with suitable control method by the type of polaroid, the simple and effective transparent liquid crystal display device that realizes is while having higher transparency, and the figure of display has higher contrast.In order to enable above-mentioned purpose of the present invention, feature and advantage become apparent more, are described in detail the specific embodiment of the present invention below in conjunction with accompanying drawing.
First embodiment
Please refer to Fig. 3 (easy in order to draw, to illustrate only the structure of a pixel cell in an embodiment of the present invention), the transparent liquid crystal display device of the embodiment of the present invention has multiple pixel cell, and described transparent liquid crystal display device comprises:
First liquid crystal layer 303, and be positioned at the first polaroid 301 above described first liquid crystal layer 303;
Be positioned at the transparent light guide plate 305 below described first liquid crystal layer 303;
Be positioned at the backlight 300 of described transparent light guide plate 305 side, between described backlight 300 and transparent light guide plate 305, be provided with the second polaroid 311;
Be arranged at the second liquid crystal layer 307 below described transparent light guide plate 305, the below of described second liquid crystal layer 307 is provided with the 3rd polaroid 309.
Wherein, described first liquid crystal layer 303 and the second liquid crystal layer 307 are TN(TwistedNematic, aligned twisted) type liquid crystal molecule, and the first liquid crystal layer 303 and the second liquid crystal layer 307 are normal white display mode, namely under not executing alive situation, the liquid crystal molecule of the first liquid crystal layer 303 and the second liquid crystal layer 307 is 90 degree of torsions from top to bottom, and polarization light is also deflected 90 degree after the first liquid crystal layer 303 or the second liquid crystal layer 307; When powering up, the first liquid crystal layer 303 forwards the direction vertical with the 3rd polaroid 309 with the first polaroid 301 to liquid crystal molecule direction under the effect of electric field of the second liquid crystal layer 307, and polarized light can not twist after the first liquid crystal layer 303 or the second liquid crystal layer 307.
Described first polaroid 301 is positioned at above described first liquid crystal layer 303, the light that polarization direction is consistent with the polarization direction of the first polaroid 301 in the light of the first liquid crystal layer 303 is by described first polaroid 301, and then the sight line that just can enter user is by the perception of user institute; Described second polaroid 311 allows the light that in the light of backlight 300, polarization direction is consistent with the polarization direction of the second polaroid 311 to enter the first liquid crystal layer 303; Described 3rd polaroid 309 passes through for allowing polarized light consistent with the polarization direction of described 3rd polaroid 309 in surround lighting and enters the second liquid crystal layer 307.
Transparent liquid crystal display device provided by the invention, according to the difference of the type of the first polaroid 301, second polaroid 311 and the 3rd polaroid 309, can be realized pixel cell by different control methods be GTG display or Transparence Display, comprises following instance:
Example 1
In example 1 of the present invention, described first polaroid 301 is set to allow the polarized light in P direction to pass through; Different from described first polaroid 301, described second polaroid 311 and the 3rd polaroid 309 are set to allow the polarized light in S direction to pass through, and described S direction is perpendicular to P direction.
Inventor finds, in example 1 of the present invention, the light of backlight 300 is after the second polaroid 311, the only polarized light in remaining S direction, when not applying voltage to described first liquid crystal layer 303, in backlight 300, the polarized light in S direction retrodeviates through the first liquid crystal layer 303 and turn 90 degrees, and becomes the polarized light in P direction, can through the first polaroid 301; When applying voltage to described first liquid crystal layer 303, in described backlight 300, the polarized light in S direction does not deflect after the first liquid crystal layer 303, is still the polarized light in S direction, can not through the first polaroid 301.
For surround lighting, described surround lighting is after the 3rd polaroid 309, the only polarized light in remaining S direction, when not applying voltage to described second liquid crystal layer 307, in surround lighting, the polarized light in S direction deflects when the second liquid crystal layer 307, by becoming the polarized light in P direction after the second liquid crystal layer 307, if do not apply voltage to the first liquid crystal layer 303, in surround lighting, the polarized light in P direction is after the first liquid crystal layer 303, become the polarized light in S direction, not by the first polaroid 301, if apply voltage to the first liquid crystal layer 303, the polarized light in described P direction is after the first liquid crystal layer 303, still be the polarized light in P direction, can through the first polaroid 301, enter the sight line of user, when applying voltage to described second liquid crystal layer 307, the polarized light in S direction does not deflect when the second liquid crystal layer 307, still be the polarized light in S direction, if do not apply voltage to the first liquid crystal layer 303, the polarized light in described S direction is after the first liquid crystal layer 303, become the polarized light in P direction, first polaroid 301 can be passed through, enter the sight line of user, if apply voltage to the first liquid crystal layer 303, the polarized light in described S direction, after the first liquid crystal layer 303, is still the polarized light in S direction, not by the first polaroid 301.
Understand example 1 of the present invention for convenience, please refer to Fig. 4, Fig. 4 shows and applies voltage to the first liquid crystal layer 303 of the pixel cell of described transparent liquid crystal display device, when voltage is applied to the second liquid crystal layer 307 of described pixel cell, namely pixel cell presents the display of black state, the operating diagram of the pixel cell of transparent liquid crystal display device.
Because the first polaroid 301 allows the polarized light in P direction to pass through, second polaroid 311 allows the polarized light in S direction to pass through, backlight 300(is as shown in Figure 3) in the polarized light 100 in S direction through after the second polaroid 311, first through transparent light guide plate 305, the first liquid crystal layer 303 is entered after transparent light guide plate 305 non-uniform reflection, because the liquid crystal molecule 303a of described first liquid crystal layer 303 its inside when applying voltage does not deflect, therefore the polarized light 100 being still S direction after the first liquid crystal layer 303 can not through the first polaroid 301, namely now the light of backlight 300 can not appear described transparent liquid crystal display device.
Again because the 3rd polaroid 309 allows the polarized light in S direction to pass through, the polarized light 110 in the S direction in surround lighting is through after the 3rd polaroid 309, enter the second liquid crystal layer 307, because the liquid crystal molecule 307a of described second liquid crystal layer 307 its inside when applying voltage does not deflect, therefore be still the polarized light 110 in S direction after the second liquid crystal layer 307, the polarized light 110 in described S direction is through transparent light guide plate 305, enter the first liquid crystal layer 303, because the liquid crystal molecule 303a of described first liquid crystal layer 303 its inside when applying voltage does not deflect, therefore be still the polarized light 110 in S direction after the first liquid crystal layer 303, the polarized light 110 in described S direction can not through the first polaroid 301, namely now the light of surround lighting can not appear described transparent liquid crystal display device.
Known through above-mentioned analysis, when described the first liquid crystal layer 303 to described pixel cell applies voltage, when voltage is applied to described second liquid crystal layer 307 of described pixel cell, the light of backlight and surround lighting all can not through described pixel cells, pixel cell state (BlackState) display darkly.
In prior art, transparent liquid crystal display device as shown in Figure 2, because the first polaroid 201 is between light guide plate 203 and backlight 200, described first polaroid 201 can allow the polarization direction backlight consistent with it to pass through, and after liquid crystal layer 207, backlight can not through the second polaroid 211; But in the below of array base palte 205, polaroid is not set, therefore when pixel cell shows black state, still have component permeate transparent liquid crystal display device to be perceived by the user in ambient light, namely the transparent liquid crystal display device of prior art can not provide black state truly; Compared to prior art, pixel cell of the present invention is because of light and the backlight not permeate crystal devices and provide black state completely that can control environment.
The principle of work when pixel cell for described transparent liquid crystal display device shown in Fig. 5 and Fig. 6 is the display of white state, the display state when brightness that white state display is defined as pixel cell is maximum.Usually, the brightness of backlight 300 will be greater than the brightness of surround lighting out and away, as long as maximum first polaroid 301 through this pixel cell of light energy of backlight 300 is by the perception of user institute, described pixel cell is the display of white state.Now, can Environment light transmission or not through the first polaroid 301.
Please refer to Fig. 5, Fig. 5 shows and does not apply voltage to the first liquid crystal layer 303 of described pixel cell, when applying voltage to described second liquid crystal layer 307 of described pixel cell, the operating diagram of the pixel cell of display panels, now backlight and surround lighting can through the first polaroids 201.
Because the first polaroid 301 allows the polarized light in P direction to pass through, second polaroid 311 allows the polarized light in S direction to pass through, backlight 300(is as shown in Figure 3) in the polarized light 100 in S direction through after the second polaroid 311, first through transparent light guide plate 305, then the first liquid crystal layer 303 is entered, and the liquid crystal molecule 303a following the first liquid crystal layer 303 inside deflects, and becomes the polarized light 100a in P direction, can through the first polaroid 301.
Again because described 3rd polaroid 309 allows the polarized light in S direction to pass through, the polarized light 110 in the S direction in surround lighting is through after the 3rd polaroid 309, enter the second liquid crystal layer 307, because the liquid crystal molecule 307a of described second liquid crystal layer 307 its inside when applying voltage does not deflect, therefore be still the polarized light 110 in S direction after the second liquid crystal layer 307, the polarized light 110 in described S direction is through transparent light guide plate 305, enter the first liquid crystal layer 303, because described first liquid crystal layer 303 does not apply voltage, the liquid crystal molecule 303a that the polarized light 110 in described S direction followed by the first liquid crystal layer 303 deflects, become the polarized light 110c in P direction, the polarized light 110c in described P direction can through the first polaroid 301.
Known through above-mentioned analysis, when not applying voltage to the first liquid crystal layer 303 of described pixel cell, when voltage is applied to described second liquid crystal layer 307 of described pixel cell, the light of backlight and the light of surround lighting all can through described pixel cells, then enter the sight line of user, pixel cell is white state (WhiteState) display.
Fig. 6 is that pixel cell is in the another kind of situation in white state display, Fig. 6 shows and does not apply voltage to the first liquid crystal layer 303 of described pixel cell, when also voltage not being applied to described second liquid crystal layer 307 of described pixel cell, the operating diagram of display panels.
Because the first polaroid 301 allows the polarized light in P direction to pass through, second polaroid 311 allows the polarized light in S direction to pass through, the polarized light 100 in the S direction in backlight is through after the second polaroid 311, first through transparent light guide plate 305, then the first liquid crystal layer 303 is entered, and the liquid crystal molecule 303a following the first liquid crystal layer 303 inside deflects, and becomes the polarized light 100a in P direction, can through the first polaroid 301.
Again because described 3rd polaroid 309 allows the polarized light in S direction to pass through, the polarized light 110 in the S direction in surround lighting is through after the 3rd polaroid 309, enter the second liquid crystal layer 307, and deflect along with the liquid crystal molecule 307a in the second liquid crystal layer 307, become the polarized light 110a in P direction, then through after transparent light guide plate 305, enter the first liquid crystal layer 303, along with polarization occurs the liquid crystal molecule 303a in the first liquid crystal layer 303, become the polarized light 110b in S direction, because described first polaroid 301 only allows the polarized light in P direction to pass through, the polarized light 110b in described S direction cannot through the first polaroid 301.
Known through above-mentioned analysis, when neither applying voltage to the first liquid crystal layer 303 of described pixel cell, when also voltage not being applied to described second liquid crystal layer 307 of described pixel cell, the light of backlight can through pixel cell, enter the sight line of user, surround lighting through pixel cell, cannot enter the sight line of user.
For liquid crystal display, the content of a display frame is only showed by the difference between pixel cell and pixel cell, just can show, otherwise just can not be recognized by the human eye, and the simplest difference is exactly bright and dark, difference is therebetween larger, and human eye just more can perceive, this difference can use the ratio of the brightness of the brightest situation and the brightness of the darkest situation as quantizating index, and this ratio is contrast.Transparent liquid crystal display device provided by the invention, because can provide black state completely, so also can provide higher contrast compared to prior art, improves display performance.
The difference of the light and shade of pixel cell and GTG, the display of pixel cell can be distinguished from the brightest to the most secretly increasing rank, can the display of spoken parts in an opera state be the minimum gray that GTG shows, black state is shown as the maximum gray of GTG display, certainly except white state and black state, the brightness display of multiple rank between white state and black state is also included in.
Certainly, when described transparent liquid crystal display device suitably controls to be added in the voltage swing on the first liquid crystal layer 303, the liquid crystal molecule 303a of described first liquid crystal layer 303 can deflect certain angle thus realize the different displays of other GTGs except black state and white state; Or regulate the voltage swing that puts on the first liquid crystal layer 303 and the second liquid crystal layer 307 simultaneously, the liquid crystal molecule of described first liquid crystal layer 303 and the second liquid crystal layer 307 by the certain backlight of Angle ambiguity that deflection is certain or surround lighting through thus show different GTGs.
Please refer to Fig. 7, Fig. 7 shows and applies voltage to the first liquid crystal layer 303 of described pixel cell, when voltage is not applied to described second liquid crystal layer 307 of described pixel cell, namely pixel cell transparent display time operating diagram.
Because the first polaroid 301 allows the polarized light in P direction to pass through, second polaroid 311 allows the polarized light in S direction to pass through, the polarized light 100 in the S direction in backlight is through after the second polaroid 311, first the first liquid crystal layer 303 is entered via after transparent light guide plate 305 non-uniform reflection, because the liquid crystal molecule 303a of described first liquid crystal layer 303 its inside when applying voltage does not deflect, therefore be still the polarized light 100 in S direction after the first liquid crystal layer 303, the polarized light 100 in described S direction can not through the first polaroid 301.
Again because the 3rd polaroid 309 allows the polarized light in S direction to pass through, the polarized light 110 in the S direction in surround lighting is through after the 3rd polaroid 309, enter the second liquid crystal layer 307, under the second liquid crystal layer 307 does not execute alive situation, the polarized light 110 in described S direction deflects along with the liquid crystal molecule 307a in the second liquid crystal layer 307, become the polarized light 110a in P direction, then through after transparent light guide plate 305, enter the first liquid crystal layer 303, owing to being applied with voltage to the first liquid crystal layer 303, liquid crystal molecule 303a in described first liquid crystal layer 303 does not deflect, therefore, the polarized light 110a in described P direction is after the first liquid crystal layer 303, still be the polarized light 110a in P direction, can through the first polaroid 301.
Known through above-mentioned analysis, voltage is applied to the first liquid crystal layer 303 of described pixel cell, when voltage is not applied to described second liquid crystal layer 307 of described pixel cell, the light of backlight 300 does not enter the sight line of user by described pixel cell, and surround lighting can enter the sight line of user by described pixel cell, the transparent state display of described pixel cell.
In the prior art, transparent liquid crystal display device as shown in Figure 2, to be perceived by the user by transparent liquid crystal display device to realize by controlling the light of backlight when showing white state, the liquid crystal layer of all pixel cells of now described transparent liquid crystal display device has the light of backlight to enter, and because the brightness of backlight is far away higher than the brightness of surround lighting, although now can the higher white state of display brightness, but almost can not carry out Transparence Display, being namely placed in the article after described transparent liquid crystal display device can not by the perception of user institute;
Transparent liquid crystal display device provided by the invention has multiple pixel cell, and each pixel cell can control separately, so different pixel cells can independently present GTG or Transparence Display, brings better display effect.
Please refer to Figure 11, Figure 11 is the schematic diagram of the transparent liquid crystal display device display of the embodiment of the present invention one.When transparent liquid crystal display device 100 ' controls according to said method of the present invention, the observation side that user 200 ' stands in described transparent liquid crystal display device 100 ' is watched, except clearly can seeing the object 400 ' that the dorsal part of described transparent liquid crystal indicator 100 ' is placed, the figure 300 ' of the upper display of described transparent liquid crystal display device 100 ' can also be seen clearly, because transparent liquid crystal display device provided by the invention can control separately the display device of each pixel cell, concrete control is positioned at the front transparent display of each pixel cell of object 400 ', the pixel cell controlling display graphics 300 ' part is the display of corresponding GTG, in the present embodiment, owing to can pass through to control the first liquid crystal layer of each pixel cell and the voltage of the second liquid crystal layer, while display panels keeps higher clarity, the figure 300 ' shown is made to have higher contrast.
Example 2
Please continue to refer to Fig. 3, in example 2 of the present invention, different from example 1, described first polaroid 301 is set to allow the polarized light in P direction to pass through, described second polaroid 311 is set to allow the polarized light in S direction to pass through, and described 3rd polaroid 309 is set to allow the polarized light in P direction to pass through.
When not applying voltage to the first liquid crystal layer 303 of described pixel cell, no matter whether voltage is applied to the second liquid crystal layer 307, the first polaroid 301 that light in backlight 300 all can pass through described pixel cell enters the sight line of user, and pixel cell is all in white state display; When applying voltage to the first liquid crystal layer 303 of described pixel cell, when voltage not being applied to the second liquid crystal layer 307 of described pixel cell, light in backlight 300 and surround lighting all cannot through the first polaroids 301 of described pixel cell, light is not had to enter the sight line of user, the state display darkly of described pixel cell; When both applying voltage to the first liquid crystal layer 303 of described pixel cell, when again voltage being applied to the second liquid crystal layer 307 of described pixel cell, only surround lighting is through the first polaroid 301 of described pixel cell, enter the sight line of user, the transparent state display of described pixel cell, can see display panels object behind through described pixel cell.
Known by above-mentioned analysis, in order to make described pixel cell be GTG display, following control method can be adopted: voltage is not applied to the first liquid crystal layer 303 of described pixel cell, voltage is applied to the second liquid crystal layer 307 of described pixel cell; Or voltage is not applied to the first liquid crystal layer 303 of described pixel cell, voltage is not applied to the second liquid crystal layer 307 of described pixel cell; Or voltage is applied to the first liquid crystal layer 303 of described pixel cell, voltage is not applied to the second liquid crystal layer 307 of described pixel cell.
It should be noted that, executing alive while, can also by regulating the voltage swing put on the first liquid crystal layer 303, or regulate the voltage swing put on the second liquid crystal layer 307, or regulate the voltage swing put on the first liquid crystal layer 303 and the second liquid crystal layer 307, to obtain other the middle GTGs in the display of above-mentioned GTG simultaneously.
And the method controlling the display of described pixel cell transparent state is: apply voltage to the first liquid crystal layer 303 of described pixel cell, apply voltage to the second liquid crystal layer 307 of described pixel cell.
Transparent liquid crystal display device provided by the invention, described transparent liquid crystal display device has multiple pixel cell, and described transparent liquid crystal display device comprises the first liquid crystal layer, and is positioned at the first polaroid above described first liquid crystal layer; Be positioned at the transparent light guide plate below described first liquid crystal layer; Be positioned at the backlight of described transparent light guide plate side, between described transparent light guide plate and backlight, be provided with the second polaroid; Be arranged at the second liquid crystal layer below described transparent light guide plate, the below of described second liquid crystal layer is provided with the 3rd polaroid.
When the transparent state display of pixel cell, as long as by the first liquid crystal layer, the second liquid crystal layer, the first polaroid, the second polaroid and the 3rd polaroid, control the light of backlight after the first liquid crystal layer, first polaroid can not be passed, and ambient light is after the second liquid crystal layer, the first liquid crystal layer, the first polaroid can be passed;
When pixel cell is the display of white state, as long as by the first liquid crystal layer, the second liquid crystal layer, the first polaroid, the second polaroid and the 3rd polaroid, the light controlling backlight, after the first liquid crystal layer, can pass the first polaroid;
When state shows pixel cell darkly, as long as by the first liquid crystal layer, the second liquid crystal layer, the first polaroid, the second polaroid and the 3rd polaroid, control the light of backlight after the first liquid crystal layer, first polaroid can not be passed, and ambient light is after the second liquid crystal layer, the first liquid crystal layer, the first polaroid can not be passed.
Because liquid crystal possesses optical activity, the light entered wherein can be made to deflect, coordinate the deflection film being placed in the upper and lower both sides of liquid crystal layer again, the polarized light that can control certain angle enters or appears described liquid crystal layer, so the first liquid crystal layer of transparent liquid crystal display device of the present invention, the pattern of the second liquid crystal layer and the first polaroid, the type of the second polaroid and the 3rd polaroid is not limited to the content that above example 1 and example 2 limit, any those skilled in the art without departing from the spirit and scope of the present invention, the Method and Technology content of above-mentioned announcement can be utilized to make possible variation and amendment to technical solution of the present invention, therefore, every content not departing from technical solution of the present invention, according to any simple modification that technical spirit of the present invention is done above embodiment, equivalent variations and modification, all belong to the protection domain of technical solution of the present invention.
Second embodiment
In the structure shown in the first embodiment, the transparent liquid crystal display device of second embodiment of the invention also comprises: the first upper substrate and the first infrabasal plate, and described first liquid crystal layer is sandwiched between the first upper substrate and the first infrabasal plate, forms the first liquid crystal panel; Second upper substrate and the second infrabasal plate, described second liquid crystal layer is sandwiched between the second upper substrate and the second infrabasal plate and forms the second liquid crystal panel.
Please refer to Fig. 8, the transparent liquid crystal display device of second embodiment of the invention comprises:
First infrabasal plate 413, first upper substrate 415 and the first liquid crystal layer 403 be arranged between described first infrabasal plate 413, first upper substrate 415, form the first liquid crystal panel;
Be positioned at the first polaroid 401 above described first upper substrate 415;
Be positioned at the transparent light guide plate 405 below described first infrabasal plate 413;
Be positioned at the backlight 400 of described transparent light guide plate 405 side, between described backlight 400 and transparent light guide plate 405, be provided with the second polaroid 411;
Second infrabasal plate 417, second upper substrate 419 and the second liquid crystal layer 407 be arranged between described second infrabasal plate 417, second upper substrate 419, form the second liquid crystal panel;
Be positioned at the 3rd polaroid 409 below described second array base palte 417.
Wherein, described first liquid crystal layer 403 is the TN type liquid crystal display mode of Chang Bai; Described first polaroid 401 is set to allow the polarized light in P direction or S direction to pass through; Described second polaroid 411 is set to allow the polarized light in P direction or S direction to pass through; Described 3rd polaroid 409 is set to allow the polarized light in P direction or S direction to pass through.Concrete details please refer to the first embodiment of the present invention, do not repeat them here.
Described first infrabasal plate 413 and the first upper substrate 415 are for controlling the deflection of liquid crystal molecule in the first liquid crystal layer 403.Incorporated by reference to reference to figure 9, described first infrabasal plate 413 is array base palte.Described first infrabasal plate 413 is provided with many first sweep trace G11, G12, G13 etc. be parallel to each other near the side of the first liquid crystal layer 403, first data line S11, S12, S13, S14, S15, S16s etc. vertical with described first sweep trace with many, described many first sweep traces G11, G12, G13 and first data line S11, S12, S13, S14, S15, S16 intersection limit multiple first sub-pixel unit 500.
As shown in Figure 9, each first sub-pixel unit 500 comprises: thin film transistor (TFT) 1001 and pixel electrode 1002, the first data line S11 that described thin film transistor (TFT) 1001 is corresponding with described pixel cell and the first sweep trace G11 is electrically connected, described thin film transistor (TFT) 1001 as switch, for controlling the pixel voltage on corresponding pixel electrode 1002; Simultaneously described first upper substrate 415 is provided with public electrode towards the first liquid crystal layer 403 and possesses common electric voltage, the liquid crystal molecule of the first liquid crystal layer 403 described in described pixel voltage and common electric voltage co-controlling.Meanwhile, described first upper substrate 415 can realize colored display for color membrane substrates, because color membrane substrates is well known to those skilled in the art, does not repeat them here.
Alternatively, described first liquid crystal panel can also be other display modes, such as IPS(In-PlaneSwitching, plane conversion) type liquid crystal panel, FFS(FringeFieldSwitching, fringe field switching) display panels of type display panels or other types.Described IPS type liquid crystal panel or FFS type display panels the same with TN type liquid crystal panel, be also utilize the optical activity of liquid crystal to control the deflection of light, also possess wider visual angle simultaneously, there is better image information display effect.
Please continue to combine with reference to figure 8, described second infrabasal plate 417 and the second upper substrate 419, described second liquid crystal layer 407 is sandwiched between the second infrabasal plate 417 and the second upper substrate 419 and forms the second liquid crystal panel.
According to driving type, described second liquid crystal panel can be set to active drive type liquid crystal panel or passive driving type liquid crystal panel.
If the second liquid crystal panel is active drive type liquid crystal panel, it also as the first display panels, not only can control whether passing through of light, can also regulate gray-scale intensity.When Transparence Display, can the power of adjusting ambient light, there is good display effect.
When described second liquid crystal panel is active drive type liquid crystal panel, described second infrabasal plate 417 is array base palte, its side near the second liquid crystal layer 407 is provided with many second sweep traces (not shown) be parallel to each other, second data line (not shown) vertical with described second sweep trace with many, described many second sweep traces and the second data line intersection limit multiple second sub-pixel unit, each second sub-pixel unit also comprises thin film transistor (TFT) and pixel electrode, and the deflection (not shown) of control second liquid crystal layer 407 of being come together by the public electrode of described pixel electrode and the second upper substrate 419.
Preferably, described second sub-pixel unit is arranged in the first sub-pixel unit 500(of described first liquid crystal panel as shown in Figure 9) immediately below and one_to_one corresponding, described one_to_one corresponding refers to that the light transmission part of described first sub-pixel unit 500 and the second sub-pixel unit is overlapping to the full extent, such as the first sub-pixel unit 500 and the design of the second sub-pixel unit can be become identical shape, by lighttight local overlapping, overlap is also carried out in light transmission part, reduces the loss of brightness to the full extent.
If only consider to control environment whether the passing through of light, and do not need to regulate it by the brightness of human eye institute perception, described second liquid crystal panel can select passive driving type liquid crystal panel.
Incorporated by reference to reference to figure 8 and Figure 10 (for ease of understand, not shown second upper substrate and the second infrabasal plate in Figure 10), when described second liquid crystal panel is passive driving type liquid crystal panel, described second upper substrate 417 is provided with many first electrodes 601 be parallel to each other near the side of the second liquid crystal layer 407, described second infrabasal plate 419 is provided with many second electrodes 603 be parallel to each other near the side of the second liquid crystal layer 407, described first electrode 601 is perpendicular to described second electrode 603, described first electrode 601 and the second electrode 603 form multiple intersection region, described multiple intersection region forms the second sub-pixel unit 605.
In each second sub-pixel unit 605, the liquid crystal molecule of the second liquid crystal layer 407 to be clipped between the first electrode 601 perpendicular to one another and the second electrode 603, the drive singal of passive driving type display panels input removes the first electrode 601 and the second electrode 603 driving each successively, so when a certain bar first electrode 601 and when being selected with second electrode 603 that its intersects, the liquid crystal molecule of the second sub-pixel unit 605 on the point of crossing of described first electrode 601 and the second electrode 603 is driven deflection, can control the deflection of light.The low price of passive driving type display panels, can reduce the cost of product.
The second sub-pixel unit 605 in described second liquid crystal panel is arranged in the first sub-pixel unit 500(of described first liquid crystal panel as shown in Figure 9) immediately below and with described first sub-pixel unit 500 one_to_one corresponding.
In order to enable described surround lighting through the second sub-pixel unit 605 of the second liquid crystal panel, the material of described first electrode 601 and the second electrode 603 is transparent material, such as tin indium oxide.
Although the present invention with preferred embodiment openly as above; but it is not for limiting the present invention; any those skilled in the art without departing from the spirit and scope of the present invention; the Method and Technology content of above-mentioned announcement can be utilized to make possible variation and amendment to technical solution of the present invention; therefore; every content not departing from technical solution of the present invention; the any simple modification done above embodiment according to technical spirit of the present invention, equivalent variations and modification, all belong to the protection domain of technical solution of the present invention.
Claims (17)
1. a transparent liquid crystal display device, described transparent liquid crystal display device has multiple pixel cell, it is characterized in that, described transparent liquid crystal display device comprises:
First liquid crystal layer, and be positioned at the first polaroid above described first liquid crystal layer;
Be positioned at the transparent light guide plate below described first liquid crystal layer;
Be positioned at the backlight of described transparent light guide plate side, between described transparent light guide plate and backlight, be provided with the second polaroid;
Be arranged at the second liquid crystal layer below described transparent light guide plate, the below of described second liquid crystal layer is provided with the 3rd polaroid;
First upper substrate and the first infrabasal plate, described first liquid crystal layer is sandwiched between the first upper substrate and the first infrabasal plate, forms the first liquid crystal panel;
Second upper substrate and the second infrabasal plate, described second liquid crystal layer is sandwiched between the second upper substrate and the second infrabasal plate, forms the second liquid crystal panel.
2. transparent liquid crystal display device as claimed in claim 1, it is characterized in that, multiple pixel cells of described transparent liquid crystal display device can display or clear state display in GTG respectively, makes described transparent liquid crystal display device subregion display graphics and subregion is transparent.
3. transparent liquid crystal display device as claimed in claim 2, is characterized in that, when the transparent state of described pixel cell shows, the light of backlight is after the first liquid crystal layer, first polaroid can not be passed, and ambient light is after the second liquid crystal layer, the first liquid crystal layer, through the first polaroid.
4. transparent liquid crystal display device as claimed in claim 2, is characterized in that, described GTG display comprises the display of white state and the display of black state.
5. transparent liquid crystal display device as claimed in claim 4, is characterized in that, when described pixel cell is the display of white state, when the light of backlight is after the first liquid crystal layer, through the first polaroid.
6. transparent liquid crystal display device as claimed in claim 4, is characterized in that, described pixel cell darkly state display time, the light of backlight is after the first liquid crystal layer, can not pass the first polaroid, and ambient light is after the second liquid crystal layer, the first liquid crystal layer, can not the first polaroid be passed.
7. transparent liquid crystal display device as claimed in claim 1, it is characterized in that, described first upper substrate is color membrane substrates.
8. transparent liquid crystal display device as claimed in claim 1, it is characterized in that, described first liquid crystal panel is active drive type liquid crystal panel.
9. transparent liquid crystal display device as claimed in claim 8, it is characterized in that, described first liquid crystal panel can be the display modes such as TN type, FFS type or IPS type.
10. transparent liquid crystal display device as claimed in claim 8, it is characterized in that, described first infrabasal plate is array base palte, described first infrabasal plate is provided with many first sweep traces be parallel to each other in the side near the first liquid crystal layer, first data line vertical with described first sweep trace with many, described many first sweep traces and the first data line intersection limit multiple first sub-pixel unit.
11. transparent liquid crystal display device as claimed in claim 10, is characterized in that, described second liquid crystal panel is active drive type liquid crystal panel.
12. transparent liquid crystal display device as claimed in claim 11, is characterized in that, described second liquid crystal panel can be the display modes such as TN type, FFS type or IPS type.
13. transparent liquid crystal display device as claimed in claim 11, it is characterized in that, described second infrabasal plate is provided with many second sweep traces be parallel to each other near the side of the second liquid crystal layer, second data line vertical with described second sweep trace with many, described many second sweep traces and the second data line intersection limit multiple second sub-pixel unit.
14. transparent liquid crystal display device as claimed in claim 13, is characterized in that, described first sub-pixel unit and described second sub-pixel unit one_to_one corresponding are arranged.
15. transparent liquid crystal display device as claimed in claim 10, it is characterized in that, described second liquid crystal panel is passive driving type liquid crystal panel.
16. transparent liquid crystal display device as claimed in claim 15, it is characterized in that, described second upper substrate is provided with many first electrodes be parallel to each other near the side of the second liquid crystal layer, described second infrabasal plate is provided with many second electrodes be parallel to each other near the side of the second liquid crystal layer, described first electrode vertical is in described second electrode, and the region that described first electrode and the second electrode intersect forms multiple second sub-pixel unit.
17. transparent liquid crystal display device as claimed in claim 16, is characterized in that, described first sub-pixel unit and described second sub-pixel unit one_to_one corresponding are arranged.
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| CN201210224512.7A CN103293747B (en) | 2012-06-29 | 2012-06-29 | Transparent liquid crystal display device |
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| CN103676364A (en) * | 2013-12-20 | 2014-03-26 | 深圳市华星光电技术有限公司 | Display panel |
| CN104090423B (en) * | 2014-06-23 | 2017-08-01 | 京东方科技集团股份有限公司 | Transparent display |
| CN104297997B (en) * | 2014-11-05 | 2017-02-01 | 京东方科技集团股份有限公司 | Liquid crystal display panel, and display method and display device thereof |
| CN104376796A (en) * | 2014-11-17 | 2015-02-25 | 深圳市华星光电技术有限公司 | Transparent display device |
| US9666118B2 (en) * | 2015-10-01 | 2017-05-30 | Chunghwa Picture Tubes, Ltd. | Transparent display apparatus |
| CN106610547B (en) * | 2015-10-26 | 2019-06-14 | 中华映管股份有限公司 | Display device and display methods |
| CN105549282A (en) * | 2016-01-07 | 2016-05-04 | 武汉华星光电技术有限公司 | Transparent displayer |
| CN106057856A (en) * | 2016-06-21 | 2016-10-26 | 京东方科技集团股份有限公司 | Transparent display device and display method |
| CN105929617B (en) * | 2016-07-14 | 2018-12-11 | 京东方科技集团股份有限公司 | Transparent display panel and its manufacturing method and transparent display |
| CN106782382A (en) * | 2016-12-28 | 2017-05-31 | 武汉华星光电技术有限公司 | A kind of display panel and display device |
| CN107219697A (en) * | 2017-05-25 | 2017-09-29 | 深圳市华星光电技术有限公司 | Transparent display panel and device |
| CN107357098A (en) * | 2017-06-14 | 2017-11-17 | 南京中电熊猫平板显示科技有限公司 | Transparent display panel and its manufacture method |
| CN108535911A (en) * | 2018-05-21 | 2018-09-14 | 京东方科技集团股份有限公司 | A kind of transparent liquid crystal display device |
| TWI683144B (en) * | 2018-12-22 | 2020-01-21 | 友達光電股份有限公司 | Polarizer module and operation method thereof |
| CN109597244A (en) * | 2018-12-29 | 2019-04-09 | 联想(北京)有限公司 | Show equipment, display methods and display device |
| TWI729858B (en) | 2020-06-19 | 2021-06-01 | 國立中山大學 | Transmittable lighting device |
| CN112180495A (en) * | 2020-09-29 | 2021-01-05 | 宁波视睿迪光电有限公司 | Light guide plate of backlight module and liquid crystal display device with same |
| CN113759636B (en) * | 2021-09-29 | 2024-01-23 | 维沃移动通信有限公司 | Filtering component, camera module and electronic equipment |
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