CN104157217A - OLED (organic light emitting diode) device without circular polarizer - Google Patents
OLED (organic light emitting diode) device without circular polarizer Download PDFInfo
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- CN104157217A CN104157217A CN201410350367.6A CN201410350367A CN104157217A CN 104157217 A CN104157217 A CN 104157217A CN 201410350367 A CN201410350367 A CN 201410350367A CN 104157217 A CN104157217 A CN 104157217A
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Abstract
The invention belongs to the technical field of OLED (organic light emitting diode) display and discloses an OLED device without circular polarizer. The OLED device comprises an OLED screen and a guest-host effect type liquid crystal box, and the guest-host effect type liquid crystal box is adhered onto the OLED screen by means of OCR process, and a 1/4 wave plate is adhered onto the guest-host effect type liquid crystal box and positioned between the guest-host effect type liquid crystal box and the OLED screen. The OLED device has the advantages that operating states of the guest-host effect type liquid crystal box can be controlled according to conditions of an external environment, so that the guest-host effect type liquid crystal box is enabled to be in an off state when light intensity of the external environment is high and is enabled to be in an on state when light intensity of the external environment is low, and 100% permeation of light emitted by the OLED screen can be realized theoretically. Under equal driving conditions, luminance is improved by 50% as compared with that of an OLED screen with the circular polarizer; if the luminance is consistent, the OLED screen with the guest-host effect type liquid crystal box is lower in energy consumption.
Description
Technical field
The invention belongs to OLED display technique field, particularly a kind of OLED device that does not use rotatory polarization sheet.
Background technology
OLED has that active illuminating, fast response time, low-voltage driving, power consumption are low, structure of whole solid state, ultra-thin, visual angle are wide, the plurality of advantages such as can serviceability temperature scope large, and this outstanding properties advantage has determined the status of its display of future generation; The next profit point of the high-technology field that Ta Shi various countries fall over each other to seize and dull and stereotyped display industries.
Although OLED has possessed above all advantages, concerning OLED element, 20% the photon of only having an appointment penetrates to outside.Therefore,, as long as can will be directed to outside in a part for the absorbed photon in inside, have great importance to improving brightness.In addition, OLED element has important optical significance in the application of mobile electronic product.In the optical characteristics of mobile electron element, the reflection that extraneous light causes is very large on the image quality impact of display, and contrast (Contrast ratio) seems very important.As shown in Figure 1, in order to improve contrast, organic light emitting diode display is installed rotatory polarization sheet 2, to cover incident ray and to form no reflection events state.Though the reflection that at this moment extraneous light causes can be inhibited, but the photon that OLED screen 1 light-emitting component produces is when by rotatory polarization sheet 2, the average monolithic transmittance that is only equivalent to this sheet 42～43% amount by and inject to outside, like this, when by rotatory polarization sheet 2, the corresponding reduction of external quantum efficiency.In existing OLED screen, in order to control the reflected light from outside incident ray, to increase contrast, generally using monolithic visible light transmittance rate is the rotatory polarization sheet 2 of 42～43% left and right, has reduced the external quantum efficiency in rotatory polarization sheet 2 therefore corresponding.To sum up find that from the 1 structure analysis meeting of OLED screen OLED has still used rotatory polarization sheet 2, also just mean and analyze theoretically light that OLED sends by the light of loss 50%.
Summary of the invention
The present invention aims to provide a kind of OLED device that does not use rotatory polarization sheet, the problems referred to above are well solved, adopt guest-host effect type liquid crystal cell to replace rotatory polarization sheet, realize the control of ON state and OFF state, can when extraneous ambient light effects is less, realize the all-pass mistake of oled light, thereby improve brightness or reduction power consumption that OLED shows.
Technical scheme of the present invention is: a kind of OLED device that does not use rotatory polarization sheet, comprise OLED screen, guest-host effect type liquid crystal cell, guest-host effect type liquid crystal cell sticks on OLED screen by OCR technique, on guest-host effect type liquid crystal cell, be also pasted with quarter wave plate, quarter wave plate is positioned between guest-host effect type liquid crystal cell and OLED screen.
Further, described OLED screen comprises oled substrate and covers the OLED cover plate on oled substrate.
Further, described oled substrate is connected with OLED drive IC & FPC.
Further, described guest-host effect type liquid crystal cell comprises base plate for liquid crystal cell and covers the liquid crystal cell cover plate on base plate for liquid crystal cell.
Further, described guest-host effect type liquid crystal cell is connected with liquid crystal drive IC & FPC.
Further, described OCR technique comprises: some glue, upset, on overlay close, IR Self-leveling, precuring, this solidifies.
The invention has the beneficial effects as follows: replace rotatory polarization sheet because the present invention has adopted guest-host effect type liquid crystal cell, realize the control of ON state and OFF state, can when extraneous ambient light effects is less, realize the all-pass mistake of oled light, thereby improve brightness or reduction power consumption that OLED shows.Contrast with the guest-host effect type liquid crystal cell that uses quarter wave plate, the principle of work of rotatory polarization sheet is consistent with the principle of work of its OFF state, but the advantage of guest-host effect type liquid crystal cell is to control the switching of ON state and OFF state, so, in the impact that does not need to consider surround lighting, guest-host effect type liquid crystal cell can be transformed into ON state, thereby the outgoing of the light 100% that guarantee OLED sends, the brightness that has improved OLED device; In the impact that need to filter surround lighting, guest-host effect type liquid crystal cell is switched to OFF state, thereby filters surround lighting, avoid reducing the contrast of OLED device.
Brief description of the drawings
Fig. 1 is the OLED structural representation that uses rotatory polarization sheet;
Fig. 2 is structural representation of the present invention;
Schematic diagram when Fig. 3 is guest-host effect type liquid crystal cell OFF state of the present invention;
Schematic diagram when Fig. 4 is guest-host effect type liquid crystal cell ON state of the present invention;
In figure: 1.OLED screen, 11.OLED substrate, 12.OLED cover plate, 13.OLED drive IC & FPC, 2. rotatory polarization sheet, 3. guest-host effect type liquid crystal cell, 31. base plate for liquid crystal cell, 32. liquid crystal cell cover plates, 33. liquid crystal drive IC & FPC, 4.1/4 wave plate, 5.OCR glue-line.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearer, below in conjunction with accompanying drawing, the present invention is further elaborated.
As shown in Figure 2, the invention discloses technical scheme of the present invention is: a kind of OLED device that does not use rotatory polarization sheet, comprise OLED screen 1, guest-host effect type liquid crystal cell 3, guest-host effect type liquid crystal cell 3 sticks on OLED screen 1 by OCR technique, on guest-host effect type liquid crystal cell 3, be also pasted with quarter wave plate 4, quarter wave plate 4 is positioned between guest-host effect type liquid crystal cell 3 and OLED screen 1.OLED screen 1 comprises oled substrate 11 and covers the OLED cover plate 12 on oled substrate 11.Oled substrate 11 is connected with OLED drive IC & FPC13.Guest-host effect type liquid crystal cell 3 comprises base plate for liquid crystal cell 31 and covers the liquid crystal cell cover plate 32 on base plate for liquid crystal cell 31.Guest-host effect type liquid crystal cell 3 is connected with liquid crystal drive IC & FPC33.OCR technique comprises: some glue, upset, on overlay close, IR Self-leveling, precuring, this solidifies.Be that quarter wave plate 4 is first attached on guest-host effect type liquid crystal cell 3, and then by OCR glue-line 5, quarter wave plate 4 and OLED screen 1 pasted.
Adopt as shown in Figure 3 and Figure 4 the guest-host effect type liquid crystal cell 3 that is pasted with quarter wave plate 4, mutually orthogonal incident polarization light component makes direction of polarized light half-twist by quarter wave plate 4 in two light paths, and exchanges polarized light component.So in OFF state, each polarized light component is absorbed in input path and reflected light path respectively; In ON state, light by guest-host effect type liquid crystal cell 3, is not absorbed completely.When OLED screen 1 is worked, in the impact that does not need to consider surround lighting, guest-host effect type liquid crystal cell 3 can be transformed into ON state, thus the outgoing of the light 100% that guarantee OLED screen 1 sends, the brightness that has improved OLED screen 1; In the impact that need to filter surround lighting, guest-host effect type liquid crystal cell 3 is switched to OFF state, thereby filters surround lighting, avoid reducing the contrast of OLED screen 1.
Use guest-host effect type liquid crystal cell 3, can be according to external environment situation, control the duty of guest-host effect type liquid crystal cell 3, thereby when extraneous surround lighting is more intense, make guest-host effect type liquid crystal cell 3 in OFF state, the same with the duty of rotatory polarization sheet 2 under this state; When external environment is more weak, make guest-host effect type liquid crystal cell 3 in ON state, at this moment the light that OLED screen 1 sends in theory can 100% passes through, contrast is used the OLED screen 3 of rotatory polarization sheet 2, under equal drive condition, brightness improves 50%, if brightness is consistent, uses OLED screen 1 power-dissipation-reduced of guest-host effect type liquid crystal cell 3.
Those of ordinary skill in the art will appreciate that, embodiment described here is in order to help reader understanding's principle of the present invention, should be understood to that the protection domain of invention is not limited to such special statement and embodiment.Everyly make various possible being equal to according to foregoing description and replace or change, be all considered to belong to the protection domain of claim of the present invention.
Claims (6)
1. one kind does not use the OLED device of rotatory polarization sheet, it is characterized in that: comprise OLED screen, guest-host effect type liquid crystal cell, described guest-host effect type liquid crystal cell sticks on OLED screen by OCR technique, on described guest-host effect type liquid crystal cell, be also pasted with quarter wave plate, described quarter wave plate is positioned between guest-host effect type liquid crystal cell and OLED screen.
2. the OLED device that does not use rotatory polarization sheet according to claim 1, is characterized in that: described OLED screen comprises oled substrate and covers the OLED cover plate on oled substrate.
3. the OLED device that does not use rotatory polarization sheet according to claim 2, is characterized in that: described oled substrate is connected with OLED drive IC & FPC.
4. the OLED device that does not use rotatory polarization sheet according to claim 1, is characterized in that: described guest-host effect type liquid crystal cell comprises base plate for liquid crystal cell and covers the liquid crystal cell cover plate on base plate for liquid crystal cell.
5. the OLED device that does not use rotatory polarization sheet according to claim 1, is characterized in that: described guest-host effect type liquid crystal cell is connected with liquid crystal drive IC & FPC.
6. the OLED device that does not use rotatory polarization sheet according to claim 1, is characterized in that: described OCR technique comprises: some glue, upset, on overlay close, IR Self-leveling, precuring, this solidifies.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410350367.6A CN104157217A (en) | 2014-07-22 | 2014-07-22 | OLED (organic light emitting diode) device without circular polarizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410350367.6A CN104157217A (en) | 2014-07-22 | 2014-07-22 | OLED (organic light emitting diode) device without circular polarizer |
Publications (1)
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| CN104157217A true CN104157217A (en) | 2014-11-19 |
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| CN201410350367.6A Pending CN104157217A (en) | 2014-07-22 | 2014-07-22 | OLED (organic light emitting diode) device without circular polarizer |
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Cited By (3)
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| WO2018153147A1 (en) * | 2017-02-22 | 2018-08-30 | 京东方科技集团股份有限公司 | Display device and driving method therefor |
| CN108873435A (en) * | 2018-07-11 | 2018-11-23 | 信利半导体有限公司 | Production method, array substrate and the liquid crystal display of array substrate |
| WO2019114085A1 (en) * | 2017-12-12 | 2019-06-20 | 武汉华星光电半导体显示技术有限公司 | Oled display device and display |
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| WO2018153147A1 (en) * | 2017-02-22 | 2018-08-30 | 京东方科技集团股份有限公司 | Display device and driving method therefor |
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| WO2019114085A1 (en) * | 2017-12-12 | 2019-06-20 | 武汉华星光电半导体显示技术有限公司 | Oled display device and display |
| CN108873435A (en) * | 2018-07-11 | 2018-11-23 | 信利半导体有限公司 | Production method, array substrate and the liquid crystal display of array substrate |
| CN108873435B (en) * | 2018-07-11 | 2021-09-17 | 信利半导体有限公司 | Manufacturing method of array substrate, array substrate and liquid crystal display |
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Application publication date: 20141119 |