CN103514841A - Transparent display device and transparency adjustment method thereof - Google Patents
Transparent display device and transparency adjustment method thereof Download PDFInfo
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Abstract
The invention provides a transparent display device and a transparency adjustment method thereof. The transparent display device comprises a transparent display unit, a backlit light penetration unit and a processing unit. The processing unit is used to cause the backlit light penetration unit to scatter backlit light or block the backlit light from being irradiated to the transparent display unit so as to adjust the transparency of a transparent image picture displayed by the transparent display unit.
Description
Technical field
The invention relates to a kind of transparent display, and particularly relevant for a kind of transparent display and transparency method of adjustment thereof of capable of regulating transparency.
Background technology
Existing market is towards height contrast (high contrastratio), without characteristics such as gray-scale inversion (no gray scale inversion), colour cast little (little color shift), brightness high (high luminance), high rich color degree, high color saturation, rapid reaction and wide viewing angles for the performance requirement of liquid crystal display (liquid crystal display, LCD).
Generally speaking, liquid crystal display can be divided into penetrating LCD, reflective liquid-crystal display and semi-penetrated semi-reflected liquid crystal display haply.Along with the application of display is increasingly extensive, transparent display is developed gradually.Transparent display (Transparent Display) refers to that display itself has penetrability to a certain degree, can clearly illustrate the background at panel rear.Transparent display is applicable to the multiple application such as building window, automotive window and shopper window, and except original transparent Presentation Function, also having future may be as the development potentiality of information display, thereby enjoys market to pay close attention to.
Though utilize the transparent characteristic of transparent display can develop the application mode that many old nontransparent displays can not be accomplished, so its transparent characteristic also has its shortcoming.For example, when using transparent display, its background may have influence on user's ornamental quality, when the light of environmental background too strong, or when background color, lines too complex, all may have influence on the interpretation of user to show image, and greatly reduce the ornamental quality of transparent display.
Summary of the invention
The invention provides a kind of transparent display, can change the transparency of transparent display, and then improve the readability of transparent display.
The present invention proposes a kind of transparent display, comprises a transparent display unit, a light penetration backlight unit and a processing unit.Wherein transparent display unit shows a transparent image frame according to a display data signal.Light penetration cell location backlight is in a side of transparent display unit.Processing unit couples light penetration backlight unit, controls light penetration backlight unit scattering one light backlight or block light backlight to expose to transparent display unit, to adjust the transparency of transparent image frame.
In one embodiment of this invention, above-mentioned processing unit is also controlled light penetration backlight unit scattering or is blocked all or part of light backlight according to display data signal, to reduce the transparency in all or part of region of transparent image frame.
In one embodiment of this invention, in above-mentioned transparent image frame, be lowered the imagery zone that the region of transparency is corresponding display data signal.
In one embodiment of this invention, above-mentioned transparent display, also comprise a sensing module, it is disposed on transparent display unit and couples processing unit, the condition of sensing transparent display place environmental background and user's input at least one of them, and export according to this sensing signal, processing unit is also controlled light penetration backlight unit scattering or is blocked all or part of light backlight according to sensing signal, to adjust the transparency in all or part of region of transparent image frame.
In one embodiment of this invention, above-mentioned light penetration backlight unit is organic light emitting diode display panel, high polymer dispersed liquid crystal display panel or torsion nematic liquid crystal display panel.
In one embodiment of this invention, above-mentioned processing unit is also adjusted the transparency of transparent image frame according to the GTG value of silhouette target in transparent image frame, wherein, when the GTG of silhouette target is less than a default GTG value, reduces the transparency of silhouette target.
In one embodiment of this invention, above-mentioned processing unit also detects the closed figure image in transparent image frame, and adjusts in closed figure in transparent image frame or the transparency of the outer image of closed figure.
In one embodiment of this invention, above-mentioned transparent display unit is organic light emitting diode display panel or display panels.
The present invention also proposes a kind of transparency method of adjustment of transparent display, wherein transparent display comprises a transparent display unit, it shows a transparent image frame according to a display data signal, and the transparency method of adjustment of transparent display comprises the following steps.Detect the GTG value of silhouette target in transparent image frame.Whether the GTG value that judges silhouette target is less than a default GTG value.Wherein when the GTG value of silhouette target is less than default GTG value, scattering or block a light backlight of corresponding silhouette target, to reduce the transparency of silhouette target.
The present invention also proposes a kind of transparency method of adjustment of transparent display, wherein transparent display comprises a transparent display unit, it shows a transparent image frame according to a display data signal, and the transparency method of adjustment of transparent display comprises the following steps.Detect the closed figure image in transparent image frame.According to area, shape or the contour length of closed figure image, judge whether to adjust in transparent image frame in closed figure or the transparency of the outer image of closed figure.Part light or the shield portions backlight beam of scattering one backlight beam expose to transparent display unit, to adjust in closed figure or the transparency of the outer image of closed figure.
In one embodiment of this invention, when the shape that is wherein greater than corresponding preset value or closed figure image when area or the contour length of closed figure image meets default figure, adjust in transparent image frame in closed figure or the transparency of the outer image of closed figure.
In one embodiment of this invention, wherein judge whether that the step of adjusting the transparency of image in closed figure comprises the following steps.Detect the GTG value of image in closed figure.Whether the GTG value that judges image in closed figure is less than a default GTG value.When wherein in closed figure, the GTG value of image is less than default GTG value, scattering or block the light backlight of image in corresponding closed figure, to reduce the transparency of image in closed figure.
Based on above-mentioned, the present invention utilizes light penetration backlight unit to carry out scattering or blocks light backlight and exposes to transparent display unit, to change the transparency of transparent display, and then the readability of raising transparent display.
For above-mentioned feature and advantage of the present invention can be become apparent, special embodiment below, and coordinate appended graphic being described in detail below.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the transparent display of one embodiment of the invention;
Fig. 2 is the transparent display unit of one embodiment of the invention and the schematic diagram of light penetration backlight unit;
Fig. 3 is the light penetration backlight unit scattering of one embodiment of the invention or the schematic diagram that blocks light backlight;
Fig. 4 is the transparency method of adjustment process flow diagram of the transparent display of one embodiment of the invention;
Fig. 5 is the schematic diagram according to silhouette target GTG value adjustment transparency of one embodiment of the invention;
Fig. 6 is the transparency method of adjustment process flow diagram of the transparent display of one embodiment of the invention;
The schematic diagram according to closed figure image adjustment transparency that Fig. 7 A, Fig. 7 B are the embodiment of the present invention;
Fig. 8 is the transparency method of adjustment process flow diagram of the transparent display of another embodiment of the present invention;
Fig. 9 is the transparent image frame schematic diagram of the transparency method of adjustment of the application embodiment of the present invention;
Figure 10 is the schematic diagram of the transparent display of another embodiment of the present invention;
Figure 11 is the schematic diagram of the transparent display of another embodiment of the present invention;
Figure 12 A～12D ' is the schematic diagram of transparency of the transparent image frame of adjustment of the embodiment of the present invention.
Main element symbol description:
100,200,1000,1100: transparent display;
102: transparent display unit;
104: light penetration backlight unit;
1004: sensing module;
106: processing unit;
1102: light sensing unit;
1104: camera unit;
1106: touch control unit;
S402～S408, S602～S606, S802～S808: the transparency method of adjustment of transparent display;
C1～C3: silhouette target;
L1: light backlight;
P1: rectangular closed figure;
D1: display data signal;
S1: sensing signal.
Embodiment
Fig. 1 is the schematic diagram of the transparent display of one embodiment of the invention.Please refer to Fig. 1, transparent display 100 comprises transparent display unit 102, one light penetration backlight unit 104 and a processing unit 106, wherein transparent display unit 102 can be such as having the display panel of transparent characteristic for display panels or organic light emitting diode display panel etc., and it is in order to show a transparent image frame according to display data signal D1.Light penetration backlight unit 104 is disposed at a side of transparent display unit 102, and light penetration backlight unit 104 is coupled to processing unit 106.Processing unit 106 controlling back light light penetration unit 104 diffuse backlight light L1 or block light L1 backlight and expose to transparent display unit 102, to adjust the transparency of transparent image frame.At this, light L1 backlight means the light of directive light penetration backlight unit 104, for example environment light source.In addition, light penetration backlight unit 104 can be for example organic light emitting diode display panel, high polymer dispersed liquid crystal display panel or torsion nematic liquid crystal display panel.
So, by adjusting the penetrable degree of light of light penetration backlight unit 104, get final product scattering or block light L1 backlight, and then reaching the effect that reduces transparency.Height that it should be noted that transparency herein means as the difference of light penetration level or scattering degree alleged, so the number of light penetration degree or fog-level or mist degree (Haze) all can be considered transparency.In addition, in part embodiment, the transparency adjustment of above-mentioned transparent image frame is not limited to the adjustment of full frame, processing unit 106 can be controlled 104 scatterings of light penetration backlight unit or block all or part of light L1 backlight according to display data signal D1, to reduce the transparency of the subregion of transparent image frame, make transparent display 100 meet the demand of practical application.Wherein, the imagery zone that the imagery zone that is lowered transparency in transparent image frame is corresponding display data signal D1, for example window of application program or graphical user interface etc.
For instance, Fig. 2 is the transparent display unit of one embodiment of the invention and the schematic diagram of light penetration backlight unit, in the left figure of Fig. 2, light penetration backlight unit 104 scatterings or block all light L1 backlight, therefore light penetration backlight unit 104 provides a background video reducing after transparency, makes the shown image frame of transparent display unit 102 can not be subject to the interference of background completely and can know and show its presentation content.In the right figure of Fig. 2, the not scattering or block all light L1 backlight of 104 of light penetration backlight unit, and opened a part of imagery zone (that is space rectangles region) allow light L1 backlight be able to by, some can look at transparent display unit 102 scenery behind straight to make the shown image frame of transparent display unit 102.
It should be noted that 104 of the unit scattering of above-mentioned light penetration backlight or block light L1 backlight and the imagery zone that covers is not limited to the figure shown in Fig. 2 embodiment.Fig. 3 is the light penetration backlight unit scattering of one embodiment of the invention or the schematic diagram that blocks light backlight, as shown in Figure 3, light penetration backlight unit 104 scatterings or block light L1 backlight and the opaque image region of causing can be arbitrary shape, as all transparent, all opaque, circular, rectangle, triangle or other are irregularly shaped etc., and the number in opaque image region is also unrestricted.
In simple terms, the control of the transparency of transparent image frame is responsible for by light penetration backlight unit 104, and it is responsible for scattering or blocks the light of wanting to penetrate light penetration backlight unit 104 from the external world, and 102 of transparent display units are responsible for main displaying contents.Because the control of light penetration backlight unit 104 is relevant to displaying contents, therefore need to have processing unit 106 (can be for example α layer control hardware (Alpha Layer control HW) in practical application), it can be present in existing image output hardware (video output HW) or independently hardware design.Processing unit 106 is for controlling whether passing through of light L1 backlight, allow presentation content be presented on opaque light penetration backlight unit 104 before, or allow askiatic content place be presented the scenery after transparent display 100.
General transparent display 100 consists of software and hardware, conventionally operating system is by graph rendering element (Graphic Render Component, as OpenGL, DirectX, GDI etc.) graphical user interface is calculated, and by driver make display card or show wafer and by the result output of graphical user interface on screen.About the adjustment mode of light penetration backlight unit 104, can control transparency by the different α value (alpha value) of output, if setting is transparent during alpha=0%, and be transparent during alpha=100%.Corresponding to the difference of the embodiment of light penetration backlight unit 104, the corresponding voltage of its α value or current value are also different, for instance, concerning stable twisted nematic liquid crystal, α=0% when 5 volts (V), α=100% during 0V; α=75% during 65V concerning high polymer dispersed liquid crystal, α=6% during 0V; α=0% during 0 milliampere (mA) concerning organic light emitting diode, α=70% during 500mA).
When specifically, specific imagery zone transparency manually in above-mentioned opaque image region start can be determined or be set in, automatically change.In addition, also can detect the imagery zone that judgement must be carried out transparency adjustment by processing unit 106.Fig. 4 is the transparency method of adjustment process flow diagram of the transparent display of one embodiment of the invention.Referring to Fig. 1 and Fig. 4, first, processing unit 106 detects the GTG value (step S402) of silhouette target in transparent image frame.Then, processing unit 106 judges whether the GTG value of silhouette target is less than a default GTG value (step S404).Wherein, if the GTG value of silhouette target is less than default GTG value, processing unit 106 is controlled 104 scatterings of light penetration backlight unit or blocks the light L1 backlight of corresponding silhouette target, to reduce the transparency (step S406) of silhouette target.Otherwise, if the GTG value of silhouette target is less than default GTG value, do not reduce the transparency (step S408) of silhouette target.
For instance, suppose that shade of gray is 0～255 rank, can be made as 200 by presetting GTG value, if the GTG value of silhouette target is greater than 200, α value corresponding to silhouette target is made as to 100%, if the GTG value of silhouette target is less than 200, α value corresponding to silhouette target is made as to 0%.Fig. 5 is the schematic diagram according to silhouette target GTG value adjustment transparency of one embodiment of the invention.Please refer to Fig. 5, as shown in Figure 5, in the document image of surplus white background, the GTG value of white background image part is lower, therefore processing unit 106 is just controlled the transparency that light penetration backlight unit 104 reduces white background image part, originally the behind scene (dotted portion) in left figure just can be blocked by light penetration backlight unit 104 after adjusting transparency thus, and the content of identification file image (as shown at right) clearly.
Fig. 6 is the transparency method of adjustment process flow diagram of the transparent display of one embodiment of the invention.Referring to Fig. 1 and Fig. 6, in the present embodiment, the imagery zone that must carry out transparency adjustment judges for the characteristic by closed figure in transparent image frame.First, the closed figure image (step S602) that processing unit 106 detects in transparent image frame.Then, processing unit 106 judges whether to adjust in transparent image frame in closed figure or the transparency (step S604) of the outer image of closed figure according to area, shape or the contour length of closed figure image.Then processing unit 106 is controlled light penetration backlight unit 104 diffuse backlight light beam L1 according to judged result again part light or shield portions backlight beam L1 expose to transparent display unit 102, to adjust in closed figure or the transparency (step S606) of the outer image of closed figure.
Wherein, according to area, shape or the contour length of closed figure image, judge whether to adjust in transparent image frame in closed figure or the mode of the transparency of the outer image of closed figure can judge whether the area of closed figure image or the shape whether contour length is greater than its corresponding preset value or closed figure image meet default figure (step S604A) by processing unit 106.If the area of closed figure image or contour length are greater than the shape of its corresponding preset value or closed figure image, meet while presetting figure, just enter step S606, reduce the transparency of adjusting image in closed figure or outside closed figure.Otherwise, if being greater than the shape of its corresponding preset value or closed figure image, the area of closed figure image or contour length do not meet while presetting figure, do not adjust the transparency (step S604B) of image in closed figure or outside closed figure.
Wherein, the corresponding preset value of the area of closed figure image and contour length can be for example respectively 3000 picture elements and 40 picture elements, and the default figure of closed figure image can be for example the figure that circular, square, triangle or user set voluntarily.For instance, the schematic diagram according to closed figure image adjustment transparency that Fig. 7 A is the embodiment of the present invention.Please refer to Fig. 7 A, after defining closed figure, just can adjust the transparency of image in closed figure or outside closed figure.In the present embodiment, default figure is rectangle, by Fig. 7 A, can obviously be found out, the rectangular closed figure P1 of processing unit 106 in judging transparent image frame meets after default figure, just controlling back light light penetration unit 104 scatterings or block the light L1 backlight of its corresponding region, to reduce the transparency of rectangular closed figure P1, so the presentation content that makes rectangular closed figure P1 is become and knows that readability is many.
Again for example, the schematic diagram according to closed figure image adjustment transparency that Fig. 7 B is the embodiment of the present invention.In the present embodiment, closed figure transparency interior or the outer image of closed figure can be multistage adjustment, that is its corresponding α value can have multiple different value (Fig. 7 B Zhong numerical value unit is %).As shown in Figure 7 B, α value can be 0%, 5%, 10%, 20%, 70%, 90%, 100% etc.
In addition, also can be in conjunction with Fig. 4 and Fig. 6 embodiment in part embodiment, after detecting closed figure, utilize the method for Fig. 4 embodiment to judge whether to adjust the transparency of image in closed figure.As shown in the transparency method of adjustment process flow diagram of the transparent display of Fig. 8, first processing unit 106 detects the GTG value (step S802) of image in closed figure.Then, processing unit 106 judges whether the GTG value of image in closed figure is less than a default GTG value (step S804).Wherein, if the GTG value of image is less than default GTG value in closed figure, processing unit 106 is controlled 104 scatterings of light penetration backlight unit or is blocked the light L1 backlight of image in corresponding closed figure, to reduce the transparency (step S806) of image in closed figure.Otherwise, if the GTG value of silhouette target is less than default GTG value, do not reduce the transparency (step S808) of image in closed figure.
That is to say, by the detection of image gray scale value or the detection of closed figure, can reach the setting of the zones of different of transparent image frame being carried out to α value, wherein the group number of α value is minimum can be identical with the number of partitions of light penetration backlight unit 104.For instance, if the number of partitions of light penetration backlight unit 104 is 1st district, α value can be 1080 groups of 1 group～1920x, and its maximum group number is equal to the resolution of transparent display unit 102.No matter the detection of image gray scale value or the detection of closed figure are all to detect for show image content, such as the 2D interface of operating system, the 3D of application program draws, with from USB PC Video Camera, obtain the presentation content for showing, be all detectable presentation content.
As mentioned above, by according to display data signal D1, carry out the transparency of adjustment member or whole transparent image frame, can avoid the display quality of transparent display 100 be subject to the impact of environmental background and decline, also or improve the application of transparent display 100.For instance, Fig. 9 is the transparent image frame schematic diagram of the transparency method of adjustment of the application embodiment of the present invention, by adjusting the transparency of transparent image frame, can help user to learn the information of watched object, as building information (left figure, the comment of buildings is just presented in opaque mode, and the part outside word presents with transparent) or body interior tissue (right figure).
Figure 10 is that schematic diagram Figure 10 of the transparent display of another embodiment of the present invention illustrates the schematic diagram into the transparent display of another embodiment of the present invention, compared to Fig. 1 transparent display 100, the present embodiment transparent display 1000 also comprise a sensing module 1004, it is disposed on transparent display unit 102, and is coupled to processing unit 106.Sensing module 1004 in order to sensing transparent display 1000 conditions of place environmental background and user's input at least one of them, and export according to this sensing signal S1.Wherein the condition of environmental background can be for example that the lines of outline, color block of the environmental background at transparent display 1000 places distributes etc., and user's input can be such as the action that utilizes the modes such as keyboard, slide-mouse mouse or contact panel to input for user.
In the present embodiment, processing unit 106 is also in order to control 104 scatterings of light penetration backlight unit according to sensing signal S1 or to block all or part of light L1 backlight, to adjust the transparency of transparent image frame.It should be noted that the transparency adjustment of transparent image frame is not limited to the adjustment of full frame as described in above-described embodiment, also can only for the imagery zone of part, adjust, so that transparent display 1000 meets the demand of practical application.So by foundation, adjust transparent display 1000 conditions of place environmental background and user's input, carry out the transparency of adjustment member or whole transparent image frame, can avoid the display quality of transparent display 1000 be subject to the impact of environmental background and decline.
Figure 11 is the schematic diagram of the transparent display of another embodiment of the present invention.Furthermore, the sensing module 1004 of transparent display 1100 can comprise light sensing unit 1102, camera unit 1104 and touch control unit 1106.It should be noted that sensing module 1004 in other embodiments also can only comprise light sensing unit 1102, camera unit 1104 and touch control unit 1106 one of them or wherein two.Wherein light sensing unit 1102 is in order to the light intensity of the environmental background of sensing transparent display 1100, and output sensing signal S1 according to this.When light intensity exceeds a threshold value, processing unit 106 determines 104 scatterings of light penetration backlight unit according to sensing signal S1 or blocks light L1 backlight region, reduces the transparency of transparent image frame to control transparent display unit 102.Wherein the threshold value of light intensity is looked the embodiment difference of light sensing unit 1102, and can for example be set as ISO value 1000, brightness value (lux) 300 or induced voltage 3.2 volts (V) etc.
The schematic diagram of the transparency of the transparent image frame of adjustment that for instance, Figure 12 A～12D ' is the embodiment of the present invention.Wherein Figure 12 A is for adjusting the transparent image frame before transparency, and Figure 12 A ' is for adjusting the transparent image frame after transparency, as shown in Figure 12 A, 12A ', after the transparency of transparent image frame integral body is reduced, just becoming, the silhouette target that can make script be subject to background interference is easy to interpretation.For example in Figure 12 A, 12A ', shown prompting item " 7:30Go to school ", after reducing the transparency of transparent image frame integral body, becomes and more easily differentiates.
Wherein the threshold value of light intensity can be for example with the average GTG value of environmental background image (that is sensing signal S1) as discrimination standard, for example with every 1600, show picture element Wei Yi unit, calculate its average GTG value, under the grey-scale range on 256 rank, if average GTG value surpasses 180, judge the transparency that must reduce this imagery zone.In addition, the threshold value of mixed and disorderly degree can be for example used as benchmark with the image change frequency of silhouette target in the image of environmental background, for example can set with every 30 demonstration picture element Wei Yi units, if the change frequency of image exceeds 10B-W cycle, judge the transparency that must reduce this imagery zone.It should be noted that, transparency herein can decide by image change frequency or the frequency distribution in all or part of region of analysis background, the mode of analyzing can be by background video through edge detection process, and convert grey-tone image to, analyze specific grey-scale poor (being for example greater than the grey jump on 100 rank) and be regarded as B-W cycle, and the frequency that analyzes each position according to the number of times of its cycle and density for after transparency adjustment use.In addition, the setting of above-mentioned threshold value is only exemplary embodiment, not as limit.
By changing the transparency in partial image region, can make the application mode of transparent display 1100 more diversified.For instance, Figure 12 B～12D and Figure 12 B '～12D ' are depicted as the schematic diagram of transparency of the transparent image frame of adjustment of the embodiment of the present invention.Wherein Figure 12 B～12D is the transparent image frame of adjusting before transparency, and Figure 12 B '～12D ' is for adjusting the transparent image frame after transparency.As shown in Figure 12 B, 12B ', the desktop diagram C1 in Figure 12 B, display window C2 and the Facility Column C3 of desktop programs are all subject to the impact of environmental background before transparency adjustment, and cannot clearly present presentation content.And after adjusting transparency, desktop diagram C1, the display window C2 of desktop programs and the presentation content of Facility Column C3 just can clearly be presented, also do not hinder user to watch its scenery behind by transparent display 1100 simultaneously.So user just can search online the data of relevant environmental background, contrasts, and then improve the ease of use of transparent display 1100 with the environmental background of seeing by transparent display 1100.
Again for example, when user watches solar eclipse, transparent display 1100 can be put between the sun and its eyes, light sensing unit 1102 can sense it for high-intensity light source, only corresponding to the imagery zone of the sun, controlling 104 scatterings of light penetration backlight unit or blocking light L1 backlight, its transparency is reduced, allow user by transparent display 1100, view and admire solar eclipse easily.
In part embodiment, also can make processing unit 106 direct basis application programs see through the transparency of adjusting silhouette target corresponding with application program in transparent image frame by light penetration backlight unit 104.For instance, desktop diagram C1, the display window window C2 of desktop formula program and the imagery zone of Facility Column C3 that can directly set in corresponding diagram 12B are low transparency.Wherein, the corresponding silhouette target of application program does not limit to be adjusted to has identical transparency, and the corresponding silhouette target of different application formula program also can be set to the transparency having in various degree.The transparency that for example can set desktop diagram C1 is 50%, and the display window window C2 of desktop formula program and the transparency of Facility Column C3 are 0%.It should be noted that, above-mentioned silhouette target is except comprising above-mentioned form window, diagram and Facility Column, also can be the image of user interface (GUI), application-specific (as word, photo viewer, widget) or specific archives (as doc, jpg, avi, mpeg), and each silhouette target all can be set as different transparencies.For example, when a plurality of dissimilar silhouette target changes mutually, dissimilar silhouette target can be made as to different transparencies, to facilitate user's identification.
In addition, processing unit 106 also can directly be set the transparency of specific imagery zone in transparent image frame, as shown in Figure 12 C, Figure 12 C ', the transparency that desktop is illustrated near C 1 region with reminding item " 7:30Go to school " position by light penetration backlight unit 104 reduces, can clearly pick out its presentation content, and not be subject to the interference of environmental background.From Figure 12 C ', processing unit 106 also can reduce in transparent display frame the transparency of the corresponding imagery zone of particular scene (for example electric car and the people in Figure 12 C ') in corresponding environmental background, allows user optionally watch the scenery in environmental background.
In addition, processing unit 106 also can directly compare to the environmental background image of the accessed transparent display 1100 of camera unit 1104, and then shows related data according to the result of compare of analysis.For instance, suppose that transparent display 1100 is for being applied on the electronic apparatus such as mobile phone or panel computer, when user is during in supermarket shopping, can pass through augmented reality (Augmented Reality, AR) and for example, carry out composition explanation for the article (beverage) after transparent display 1100.Processing unit 106 can first compare to these article, and to learn label, composition, price etc. the information of product, and whether the light intensity of analysis environments background or mixed and disorderly degree will hinder demonstration is described.If the light intensity of environmental background or mixed and disorderly degree will hinder explanation and show, by the transparency of the transparent display frame outside the imagery zone of light penetration backlight unit 104 these article of reduction, and the relevant information of article is shown on the imagery zone reducing after transparency, make user can be clear that the relevant information of article.Wherein, complexity also can be considered the image of a special characteristic, and for example face characteristic, object features or have the feature of high frequency distribution, therefore can be used as identification foundation.
Again for example when user utilizes the electronic apparatus with transparent display 1100 to take pictures, user, pressing shutter obtains after image, processing unit 106 can carry out human face recognition to the image getting, and by light penetration backlight unit 104, the transparency outside people's face imagery zone is reduced.As shown in Figure 12 D and 12D ', thus, just user can be in reducing the relevant image of imagery zone editor of transparency personage's data.It should be noted that at the object of this human face recognition institute identification and not one be decided to be specific user, may be also the people beyond user.
In addition, Figure 11 is the sensing signal S1 of output in order to sensing user's touch-control action, the transparency that processing unit 106 finds out according to sensing signal S1 the imagery zone that corresponding user touches is adjusted parameter (routine α value described above or its corresponding voltage or current value), and transparency is adjusted to parameter export light penetration backlight unit 104 to, to reduce the transparency of the imagery zone that user touched.For instance, the transparency of supposing the desktop diagram C1 in Figure 12 B is 50% originally, when user clicks desktop diagram C1, touch control unit 1106 sensing users' click action according to this output sensing signal S1,106 of processing units are found out according to sensing signal S1 the desktop diagram C1 position that user clicks and are determined that according to this transparency adjusts parameter, then again transparency is adjusted to parameter and exported to light penetration backlight unit 104, to reduce the transparency of the desktop diagram C1 that user clicked.The touch-control that the transparency of the imagery zone of so touching by change user is responded user moves, and can allow user be easy to confirm its touch-control input action.In addition, in other embodiments, also can be on user interface present circular water ripples or the circle texts vision feedback feedback when as touch-control, and when roughly the same the behavior of vernier occurs, also can correspondence carry out transparency adjustment.
It should be noted that, though the sensing module 1004 of the transparent display 1100 of Figure 11 embodiment comprises three members such as light sensing unit 1102, camera unit 1104 and touch control unit 1106, in right practical application, not as limit, input tools such as button, keyboard or mouse also can be in order to implement sensing module 1004.In part embodiment, sensing module 1004 also can only include light sensing unit 1102, camera unit 1104 and touch control unit 1106 one of them or wherein two.
Below will enumerate again several Application Examples as a reference.For instance, suppose that transparent display is one the transparent liquid crystal screen in office to be set, because the light of office is generally comparatively bright, so will make user see object behind by transparent display, now transparent liquid crystal screen surpasses 300Lux by the brightness of OPTICAL SENSORS ambient light, therefore start the mode that reduces transparency, by controlling 104 scatterings of light penetration backlight unit or blocking light L1 backlight, user cannot be seen or reduce the object of seeing after display.
Again for example, user, when touch-control mobile phone interface, presses after confirmation according to system flow, and user interface all can become opaque except button area, in the mode of visible change, feeds back user.
Again for example, user mentions dull and stereotyped between the sun and its eyes, and camera unit learns that it is high-intensity light source, only in the region scattering corresponding to the sun or block light L1 backlight, makes its partially transparent degree reduction.
Again for example, a diagram at user interface on user's Touch Screen, during striking, transparent display learns that this diagram is selected, thereby this diagram region transparency is reduced, all the other imagery zone transparencies improve, when finger frames out, reply original transparency and set, and carry out its diagram program.
Again for example, hand all produces the high grade of transparency after any point Ji， everywhere control point on screen, and therefore can see user interface occurs transparent hole, and these a little transparent holes can produce and disappear gradually.
In sum, the present invention utilizes light penetration backlight unit to carry out scattering or blocks light backlight and exposes to transparent display unit, to change the transparency of transparent display, and then the readability of raising transparent display.In part embodiment, also can utilize processing unit to judge whether to adjust the transparency of transparent image frame according to the sensing result of sensing module, to avoid the display quality of transparent display to be subject to the impact of environmental background, decline.In addition, processing unit also can compare to environmental background according to sensing result, and shows related data according to the result of compare of analysis, improves significantly the ease of use of transparent display.
Finally it should be noted that: each embodiment, only in order to technical scheme of the present invention to be described, is not intended to limit above; Although the present invention is had been described in detail with reference to aforementioned each embodiment, those of ordinary skill in the art is to be understood that: its technical scheme that still can record aforementioned each embodiment is modified, or some or all of technical characterictic is wherein equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution depart from the scope of various embodiments of the present invention technical scheme.
Claims (12)
1. a transparent display, is characterized in that, comprising:
One transparent display unit, shows a transparent image frame according to a display data signal; And
One light penetration backlight unit, is disposed at a side of this transparent display unit; And
One processing unit, couples this light penetration backlight unit, controls this light penetration backlight unit scattering one light backlight or block this light backlight to expose to this transparent display unit, to adjust the transparency of this transparent image frame.
2. transparent display according to claim 1, it is characterized in that, this processing unit is also controlled this light penetration backlight unit scattering or blocks all or part of this light backlight according to a display data signal, to reduce the transparency in all or part of region of this transparent image frame.
3. transparent display according to claim 2, is characterized in that, the region that is lowered transparency in this transparent image frame is the imagery zone to should display data signal.
4. transparent display according to claim 2, is characterized in that, also comprises:
One sensing module, be disposed on this transparent display unit and couple this processing unit, the condition of this transparent display place environmental background of sensing and user's input at least one of them, and export according to this sensing signal, this processing unit is also controlled this light penetration backlight unit scattering or blocks all or part of this light backlight according to this sensing signal, to adjust the transparency in all or part of region of this transparent image frame.
5. transparent display according to claim 1, is characterized in that, this light penetration backlight unit is organic light emitting diode display panel, high polymer dispersed liquid crystal display panel or torsion nematic liquid crystal display panel.
6. transparent display according to claim 1, it is characterized in that, this processing unit is also adjusted the transparency of this transparent image frame according to the GTG value of silhouette target in this transparent image frame, wherein, when the GTG of this silhouette target is less than a default GTG value, reduce the transparency of this silhouette target.
7. transparent display according to claim 1, is characterized in that this processing unit also detects the closed figure image in this transparent image frame, and adjusts in closed figure in this transparent image frame or the transparency of the outer image of closed figure.
8. transparent display according to claim 1, is characterized in that this transparent display unit is organic light emitting diode display panel or display panels.
9. a transparency method of adjustment for transparent display, is characterized in that, this transparent display comprises a transparent display unit, and it shows a transparent image frame according to a display data signal, and the transparency method of adjustment of this transparent display comprises:
Detect the GTG value of silhouette target in this transparent image frame;
Whether the GTG value that judges this silhouette target is less than a default GTG value; And
When the GTG value of this silhouette target is less than this default GTG value, scattering or block to one of should silhouette target light backlight, to reduce the transparency of this silhouette target.
10. a transparency method of adjustment for transparent display, is characterized in that, this transparent display comprises a transparent display unit, and it shows a transparent image frame according to a display data signal, and the transparency method of adjustment of this transparent display comprises:
Detect the closed figure image in this transparent image frame;
According to area, shape or the contour length of this closed figure image, judge whether to adjust in this transparent image frame in closed figure or the transparency of the outer image of closed figure; And
The part light of scattering one backlight beam or this backlight beam of shield portions expose to this transparent display unit, to adjust in this closed figure or the transparency of the outer image of closed figure.
The transparency method of adjustment of 11. transparent displays according to claim 10, it is characterized in that, when the shape that is greater than corresponding preset value or this closed figure image when area or the contour length of this closed figure image meets default figure, adjust in this transparent image frame in closed figure or the transparency of the outer image of closed figure.
The transparency method of adjustment of 12. transparent displays according to claim 10, is characterized in that, judges whether that the step of adjusting the transparency of image in this closed figure comprises:
Detect the GTG value of image in this closed figure;
Whether the GTG value that judges image in this closed figure is less than a default GTG value; And
When in this closed figure, the GTG value of image is less than this default GTG value, scattering or block this light backlight to image in should closed figure, to reduce the transparency of image in this closed figure.
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