CN103487989A - Transparent display device - Google Patents
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Abstract
The present invention provides a transparent display device which uses a transparent backlight unit as a backlight of a transparent display panel to reduce the thickness of the transparent display device, and the transparency on the transparent display panel can be changed by adjusting the gray scale of a transparent area.
Description
Technical field
The invention relates to a kind of transparent display, and particularly relevant for a kind of transparent display with transparent backlight.
Background technology
Existing market is towards height contrast (high contrastratio), without characteristics such as gray scale reversion (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.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.Because the user can see from a side of transparent display the object of opposite side, so transparent display visually do not have thick and heavy sense, and can not allow the user feel to take up space very much.
Yet, now in the design of transparent display, backlight must be implemented with a lamp box, utilize light to be diffused among chest, then light scattering is to transparent pixels, make the user can see display frame before transparent display, the embodiment of this kind of backlight, by making, the volume of transparent display is excessive.
Summary of the invention
The invention provides a kind of transparent display, can reduce the thickness of transparent display.
The present invention proposes a kind of transparent display, comprises a transparent display panel and a transparent back light unit.Wherein transparent display panel is adjusted the distribution in its light tight zone according to a display data signal.Transparent back light unit is disposed at a side of transparent display panel, sends light beam and irradiates transparent display panel as a back light, so that transparent display panel display frame.
In one embodiment of this invention, above-mentioned transparent display panel comprises a plurality of pixel regions and a plurality of transparent region.Wherein each pixel region is adjusted its gray scale according to display data signal, with display frame on transparent display panel.Wherein a plurality of transparent regions determine the transparency of transparent display.
In one embodiment of this invention, above-mentioned each transparent region is also adjusted its transparency according to a transparency control signal, wherein the gray scale of the above-mentioned a plurality of transparent regions of transparency control signal indication.
In one embodiment of this invention, above-mentioned transparent region periodically is arranged on transparent display panel.
In one embodiment of this invention, each above-mentioned pixel region comprises a plurality of pixels, and each pixel packets contains pixel at least one times.
In one embodiment of this invention, the color of above-mentioned pixel each time be red, green, blue and yellow one of them.
In one embodiment of this invention, above-mentioned transparent display, also comprise a chromatic filter layer, and it is configured on transparent display panel, and wherein chromatic filter layer has a plurality of pixels in respective pixel zone, and each pixel packets contains pixel at least one times.
In one embodiment of this invention, above-mentioned pixel each time be a red chromatic filter layer, a green tint color filtering optical layer, a blue color color filtering optical layer and a yellow color filter layer one of them.
In one embodiment of this invention, above-mentioned transparent back light unit is an organic LED display panel.
In one embodiment of this invention, above-mentioned transparent back light unit is a projecting cell.
In one embodiment of this invention, above-mentioned projecting cell with look order method projection one column of colour to transparent display panel.
In one embodiment of this invention, above-mentioned transparent back light unit also comprises a reflector element, and it reflects the projection light of this projecting cell, usings as back light.
In one embodiment of this invention, above-mentioned transparent back light unit comprises a light guide plate, a light source and a plurality of microscopic scatterers.Wherein light guide plate has a side incidence surface, first surface and, with respect to the second surface of first surface, wherein second surface is between transparent display panel and first surface.Light source is adjacent to the side incidence surface configuration of light guide plate.A plurality of microscopic scatterers are disposed on first surface, and the light that the microscopic scatterers reflection source sends, using as back light.
In one embodiment of this invention, above-mentioned inferior pixel be arranged as stripe, mosaic type or triangle one of them.
Based on above-mentioned, the present invention utilizes the backlight of transparent back light unit as transparent display panel, due to transparent back light unit, originally as transparent, can't hinder the effect of transparent demonstration, therefore do not need to provide backlight by lamp box, so just can reduce the thickness of transparent display.
For above-mentioned feature and advantage of the present invention can be become apparent, special embodiment below, and coordinate accompanying drawing to be described in detail below.
The accompanying drawing explanation
The schematic diagram of the transparent display that Fig. 1 is one embodiment of the invention;
The pixel region of Fig. 2 A～transparent display panel that Fig. 2 E is the embodiment of the present invention and transparent region distribution schematic diagram;
The Pixel arrangement schematic diagram that Fig. 3 A～Fig. 3 D is the embodiment of the present invention;
The schematic diagram of the transparent display that Fig. 4 A, Fig. 4 B are the embodiment of the present invention;
The schematic diagram of the transparent display that Fig. 5 is another embodiment of the present invention.
Description of reference numerals:
100,400A, 400B, 500: transparent display;
102: transparent display panel;
104: transparent back light unit;
402: projecting cell;
404: reflector element;
502: light source;
504: light guide plate;
504a: side incidence surface;
504b: first surface;
504c: second surface;
506: microscopic scatterers;
D1: display data signal;
PZ1: pixel region;
T1: transparent region;
P1: pixel;
SP1: inferior pixel;
R, G, B, Y: chromatic filter layer;
W: white time pixel.
Embodiment
The schematic diagram of the transparent display that Fig. 1 is one embodiment of the invention.Please refer to Fig. 1, transparent display 100 comprises a transparent display panel 102 and a transparent back light unit 104.Wherein transparent display panel 102 can be for example display panels, twisted nematic (Twisted Nematic for example, TN) type, homeotropic alignment (Vertical Alignment, VA) type, transverse electric field switching (in-plane switching, IPS) type, bending (optically compensated bend, OCB) type or blue phase (blue phase) type display panels all can be applied, and transparent back light unit 104 is an organic LED display panel in the present embodiment, yet not as limit.Transparent display panel 102 is adjusted the distribution in its light tight zone according to a display data signal D1, transparent back light unit 104 is disposed at a side of transparent display panel 102, it irradiates transparent display panel 102 in order to send light beam as a back light, so that the distribution of transparent display panel 102 by light tight zone carrys out display frame.The beam direction that transparent back light unit 104 sends in the present embodiment is towards transparent display panel 102, yet not as limit, the beam direction that transparent back light unit 104 sends in other embodiments is transparent display panel 102 dorsad also, or sends towards transparent display panel 102 and the light beam of transparent display panel 102 dorsad simultaneously.
Because transparent back light unit 104 itself has transparent characteristic, utilize the backlight of transparent back light unit 104 as transparent display panel 102, can't become the obstruction that transparent display 100 carries out transparent demonstration, therefore do not need to provide backlight by lamp box as prior art, and then reduce the thickness of transparent display.
The pixel region of Fig. 2 A～transparent display panel that Fig. 2 E is the embodiment of the present invention and transparent region distribution schematic diagram.Furthermore, above-mentioned transparent display panel 102 can comprise a plurality of pixel region PZ1 and a plurality of transparent region T1.Wherein transparent region T1 can be for example for not being controlled by the liquid crystal pixel of display data signal D1, or transparent region T1 part is fully without the liquid crystal pixel, namely this zone is only formed by transparency materials such as air or transparent optical cements (Optical Clear Adhesive, OCA).In addition, each pixel region is adjusted its gray scale according to display data signal D1, with display frame on transparent display panel 102.
As shown in Fig. 2 A～Fig. 2 E, transparent region T1 is for periodically being arranged on transparent display panel 102, and with pixel region, PZ1 arranges alternately.Because the transparency of transparent region T1 can't change with display data signal D1, therefore by inserting transparent region T1, on transparent display panel 102, can increase the transparency of transparent display 100.Wherein, along with the shared ratio of transparent region T1 is higher, the transparency of transparent display 100 also will be higher.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.
It should be noted that in other embodiments, the transparency of transparent region T1 also can be changed.For instance, if transparent region T1 is formed by liquid crystal pixel, it can receive a transparency control signal by the data line (not shown) and adjust gray scale, and then adjusts the transparency of transparent region T1.So by unification, adjust the gray scale of all transparent region T1 on transparent display panel 102, can be adjusted the whole clearing degree of transparent display 100, allow the user can decide according to the difference of transparent display 100 place backgrounds the transparency of transparent display 100, to avoid the watch quality of background influence to the user.
As shown in the inferior Pixel arrangement schematic diagram of Fig. 3 A～Fig. 3 D, above-mentioned pixel region PZ1 comprises a plurality of pixel P1, and each pixel P1 comprises at least one times pixel SP1 (comprising in the present embodiment pixel SP1 3 times), wherein each time pixel SP1 be red, green, blue and yellow one of them.Specifically, the inferior pixel of different colours can be implemented by chromatic filter layer, and namely transparent display 100 can also comprise a chromatic filter layer, and it is configured on transparent display panel 102.Chromatic filter layer has a plurality of pixel P1 of corresponding above-mentioned pixel region PZ1, and each pixel P1 comprises pixel SP1 at least one times, wherein each time pixel SP1 be red chromatic filter layer R, green tint color filtering optical layer G, blue color color filtering optical layer B and yellow color filter layer Y one of them.In addition, on transparent region T1, without any chromatic filter layer corresponding with it, or say, the upper chromatic filter layer corresponding with it of transparent region T1 is transparent.
The pixel P1 of Fig. 3 A and Fig. 3 B all comprises red chromatic filter layer R, green tint color filtering optical layer G, blue color color filtering optical layer B, wherein the pixel P1 of Fig. 3 B has also comprised a white time pixel W than Fig. 3 A, it is on time pixel SP1, not covering chromatic filter layer, or the chromatic filter layer on inferior pixel SP1 is transparent demonstration result.White time pixel W is with the difference of transparent region T1, and the gray scale of white time pixel W is that the gray scale of transparent region T1 is to change according to the transparency control signal according to display data signal D1 change.In addition, the pixel P1 of Fig. 3 C comprises red chromatic filter layer R, green tint color filtering optical layer G, blue color color filtering optical layer B, yellow color filter layer Y.
So pass through to change the gray scale of each pixel SP1, and the backlight that coordinates transparent back light unit 104 to provide and the chromatic filter layer of different colours, can make transparent display 100 demonstrate colour picture.Transparent region T1 can increase the transparency of shown colour picture, or adjusts the transparency of colour picture by the gray scale that changes transparent region T1.Arrangement mode that it should be noted that the inferior pixel SP1 of the present embodiment is stripe, yet, in fact not as limit, for instance, the arrangement mode of inferior pixel SP1 also can be mosaic type or triangle.
In addition, in Fig. 3 D, pixel P1 only comprises white time pixel W, so the transparent display 100 of the white of application drawing 3D time pixel W only can show black and white screen.It should be noted that in the embodiment of Fig. 3 A～Fig. 3 D, transparent region T1 is all overlapping with transparent back light unit 104, and namely the shown image of transparent region T1 all can be subject to the impact of transparent back light unit 104.Yet as described in the embodiment of Fig. 2 A～Fig. 2 E, transparent region T1 can be only also air or transparent optical cement (Optical Clear Adhesive, OCA) etc. transparency material forms, namely transparent back light unit 104 only designs after red, green, blue and yellow grade pixel SP1, and can be without the irradiation of transparent back light unit 104 after transparent region T1, just after can making thus transparent display 100 know display frame, still see scenery behind, and can not covered by the light of transparent back light unit 104.
The embodiment that in other embodiments, also can change transparent back light unit 104 makes transparent display 100 demonstrate colour picture.The schematic diagram of the transparent display that Fig. 4 A is another embodiment of the present invention, please refer to Fig. 4 A, and in the present embodiment, the transparent back light unit 104 of transparent display 400A is for utilizing a projecting cell 402 to implement.Projecting cell 402 can utilize the projection pattern of look order method, the column of colour of projection Red,Blue,Green sequentially namely, the characteristic of utilizing human eye vision to persist, synthetic one full-color picture in human brain.The schematic diagram of the transparent display that Fig. 4 B is another embodiment of the present invention, in the present embodiment, transparent display 400B also comprises a reflector element 404, but the projection light of its reflective projection unit 402 is usingd as back light.So also can make the user observe colored picture, and, by the projection light of reflector element 404 reflective projection unit 402, the light that can make to get on transparent display panel 102 is more even, and then promotes the quality of display frame.
Though it should be noted that the above embodiments all coordinate a transparent region T1 to describe with single pixel region PZ1, yet not as limit.In other embodiments, also can be a plurality of pixel region PZ1 coordinate a transparent region T1, or a pixel region PZ1 coordinates the mode of a plurality of transparent region T1 to implement, and so just can make more horn of plenty of the control of transparency and displaying contents.
The schematic diagram of the transparent display that Fig. 5 is another embodiment of the present invention, please refer to Fig. 5.In the present embodiment, the transparent back light unit 104 of transparent display 500 can be implemented by light source 502 and light guide plate 504.Light guide plate 504 has a side incidence surface 504a, a first surface 504b, and, with respect to the second surface 504c of first surface 504b, second surface 504c is between transparent display panel 102 and first surface 504b.Light source 502 is adjacent to the side incidence surface 504a configuration of light guide plate 504, wherein on the first surface 504b of light guide plate 504, comprises a plurality of microscopic scatterers 506.But the light that microscopic scatterers 506 reflection sources 502 send, using as back light, because the area of microscopic scatterers 506 shared display frames is quite little, therefore as the user when watching the display frame of transparent display 500, can't perceive the existence of microscopic scatterers 506, namely in user's eye, the display frame of transparent display 500 is transparent display frame.
In sum, the present invention utilizes the backlight of transparent back light unit as transparent display panel, to reduce the thickness of transparent display.Transparent region on transparent display panel can increase the transparency of transparent display, and can change the transparency of transparent display by the gray scale of adjusting transparent region, and then improves the readability of transparent display.
Finally it should be noted that: above each embodiment, only in order to technical scheme of the present invention to be described, is not intended to limit; Although with reference to aforementioned each embodiment, the present invention is had been described in detail, those of ordinary skill in the art is to be understood that: its technical scheme that still can put down in writing aforementioned each embodiment is modified, or some or all of technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the scope of various embodiments of the present invention technical scheme.
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| CN201210192506.8A CN103487989A (en) | 2012-06-12 | 2012-06-12 | Transparent display device |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103913796A (en) * | 2014-03-13 | 2014-07-09 | 京东方科技集团股份有限公司 | Light guide plate, backlight module and transparent displayer |
| CN103985734A (en) * | 2014-04-16 | 2014-08-13 | 京东方科技集团股份有限公司 | Transparent display device and manufacturing method thereof |
| WO2016074256A1 (en) * | 2014-11-13 | 2016-05-19 | 深圳市华星光电技术有限公司 | Transparent display panel and colour filter plate substrate thereof |
| CN106019716A (en) * | 2016-07-28 | 2016-10-12 | 京东方科技集团股份有限公司 | Backlight source and driving method and display device thereof |
| CN106054475A (en) * | 2016-06-16 | 2016-10-26 | 深圳市华星光电技术有限公司 | Display panel having perspective function and array substrate |
| CN106128375A (en) * | 2016-06-24 | 2016-11-16 | 深圳市华星光电技术有限公司 | The data processing method of transparent liquid crystal display |
| US9547213B2 (en) | 2014-12-19 | 2017-01-17 | Industrial Technology Research Institute | Display device |
| US9547202B2 (en) | 2014-12-19 | 2017-01-17 | Industrial Technology Research Institute | Transparent display panel |
| CN108227292A (en) * | 2018-02-11 | 2018-06-29 | 惠州市华星光电技术有限公司 | Liquid crystal display panel and liquid crystal display, product display device |
| TWI629548B (en) * | 2014-12-19 | 2018-07-11 | 財團法人工業技術研究院 | Transparent display panel |
| CN108614375A (en) * | 2016-12-13 | 2018-10-02 | 宏碁股份有限公司 | Display panel |
| CN109003592A (en) * | 2018-08-01 | 2018-12-14 | 福建华佳彩有限公司 | A method of the adjustment transparent susceptibility of transparent display |
| CN109407391A (en) * | 2018-12-25 | 2019-03-01 | 深圳市华星光电半导体显示技术有限公司 | Transparent liquid crystal display device |
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Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103913796A (en) * | 2014-03-13 | 2014-07-09 | 京东方科技集团股份有限公司 | Light guide plate, backlight module and transparent displayer |
| US9507073B2 (en) | 2014-03-13 | 2016-11-29 | Boe Technology Group Co., Ltd. | Light guide plate, backlight assembly and transparent display |
| CN103913796B (en) * | 2014-03-13 | 2017-02-15 | 京东方科技集团股份有限公司 | Light guide plate, backlight module and transparent displayer |
| CN103985734A (en) * | 2014-04-16 | 2014-08-13 | 京东方科技集团股份有限公司 | Transparent display device and manufacturing method thereof |
| WO2016074256A1 (en) * | 2014-11-13 | 2016-05-19 | 深圳市华星光电技术有限公司 | Transparent display panel and colour filter plate substrate thereof |
| TWI629548B (en) * | 2014-12-19 | 2018-07-11 | 財團法人工業技術研究院 | Transparent display panel |
| US9547213B2 (en) | 2014-12-19 | 2017-01-17 | Industrial Technology Research Institute | Display device |
| US9547202B2 (en) | 2014-12-19 | 2017-01-17 | Industrial Technology Research Institute | Transparent display panel |
| US10261376B2 (en) * | 2016-06-16 | 2019-04-16 | Shenzhen China Star Optoelectronics Technology Co., Ltd | Display panel having perspective function and array substrate |
| CN106054475A (en) * | 2016-06-16 | 2016-10-26 | 深圳市华星光电技术有限公司 | Display panel having perspective function and array substrate |
| WO2017215057A1 (en) * | 2016-06-16 | 2017-12-21 | 深圳市华星光电技术有限公司 | Display panel and array substrate having perspective function |
| CN106128375A (en) * | 2016-06-24 | 2016-11-16 | 深圳市华星光电技术有限公司 | The data processing method of transparent liquid crystal display |
| CN106128375B (en) * | 2016-06-24 | 2018-11-23 | 深圳市华星光电技术有限公司 | The data processing method of transparent liquid crystal display |
| CN106019716A (en) * | 2016-07-28 | 2016-10-12 | 京东方科技集团股份有限公司 | Backlight source and driving method and display device thereof |
| CN106019716B (en) * | 2016-07-28 | 2019-07-02 | 京东方科技集团股份有限公司 | Backlight and its driving method, display device |
| CN108614375A (en) * | 2016-12-13 | 2018-10-02 | 宏碁股份有限公司 | Display panel |
| CN108227292A (en) * | 2018-02-11 | 2018-06-29 | 惠州市华星光电技术有限公司 | Liquid crystal display panel and liquid crystal display, product display device |
| WO2019153392A1 (en) * | 2018-02-11 | 2019-08-15 | 惠州市华星光电技术有限公司 | Liquid crystal panel, liquid crystal display, and product display device |
| US11094229B2 (en) | 2018-02-11 | 2021-08-17 | Huizhou China Star Optoelectronics Technology Co., Ltd. | Liquid crystal panel, display, and exhibition device |
| CN109003592A (en) * | 2018-08-01 | 2018-12-14 | 福建华佳彩有限公司 | A method of the adjustment transparent susceptibility of transparent display |
| CN109407391A (en) * | 2018-12-25 | 2019-03-01 | 深圳市华星光电半导体显示技术有限公司 | Transparent liquid crystal display device |
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Application publication date: 20140101 |