CN101295096A - LCD and back light source thereof - Google Patents
LCD and back light source thereof Download PDFInfo
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- CN101295096A CN101295096A CNA2007100221095A CN200710022109A CN101295096A CN 101295096 A CN101295096 A CN 101295096A CN A2007100221095 A CNA2007100221095 A CN A2007100221095A CN 200710022109 A CN200710022109 A CN 200710022109A CN 101295096 A CN101295096 A CN 101295096A
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Abstract
The invention relates to a liquid crystal display device, in particular to a liquid crystal display device adopting an organic electroluminescent device as the backlight, wherein, an organic electroluminescent panel taken as the backlight is a lattice luminescent screen. The pixel in the organic electroluminescent panel of the invention is set to be matched with the pixel in a liquid crystal panel. The liquid crystal display device of the invention can not only achieve the effect of reducing OLED backlight power consumption, but also greatly enhance the uniformity and luminescence stability of the backlight screen body as the OLD panel is designed to be lattice luminescence, and the liquid crystal display device is also beneficial to improving the display effect of the LCD devices.
Description
Technical field
The present invention relates to a kind of LCD, be specially a kind of LCD that adopts organic electroluminescence device as its backlight, belong to field of photoelectric technology.
Background technology
Along with the continuous progress of electronic industry, make the also evolution and have portable characteristic gradually of heavy electronic product.Being reflected on the display device is the main flow that is become by liquid crystal indicator (LCD) the traditional cathode ray tube (CRT) display device of replacement on the market.Have the individual for some and carry for the electronic product of characteristic, for example, mobile phone, PDA and mobile computer etc., more impossible with traditional CRT display device as display interface.
LCD is a kind of flat-panel display device of passive type, because LCD panel itself is not had a characteristics of luminescence, therefore, must add a backlight behind the LCD panel, can reach display effect.As the backlight of LCD device, in order to ensure the quality of display frame, it should have the brightness height, luminous evenly, light angle is big, cost is low, performance such as low in energy consumption, frivolous and not fragile, and area source preferably.Therefore, based on above index, the LCD backlight has three kinds usually at present: LED, EL, CCFL (cold cathode is luminous), OLED.
Cold-cathode fluorescence lamp (CCFL) is to adopt cold cathode to replace low-pressure mercury, the rare gas discharge lamp of hot cathode such as tungsten filament, under the effect of highfield, the electrode that relies on the ion bombardment to be made up of metals such as nickel, tantalum and zirconiums comes emitting electrons, mercury atom is excited and ionization, form abundant 253.7nm ultraviolet ray and enough electric currents, UV radiation excites fluorescent coating on the tube wall and luminous again.Because of the composition material difference of fluorescent material, so can send the light of different colours.It has high brightness, high-level efficiency, low energy consumption, long-life, and long-time advantage such as effectively luminous.Shockproof properties is good, can repeat bright lamp and extinguish, and can start freely at low temperatures.Compare with hot cathode type fluorescent light, thermal value is low and caliber is tiny, can be conveniently as the illumination light source of various LCDs.Shown in Figure 1A, the CCFL backlight generally adopts the single tube list side-mounted, and the light that CCFL sends enters light guide plate by reflector reflection, and light guide plate makes light spread all over whole light guide plate again and penetrates and enter astigmatism plate, and last light evenly penetrates from astigmatism plate and enters LCD.
Since LED have luminosity height, direct drive, low driving voltage (～4V), low in energy consumption, high life advantages such as (＞10 ten thousand hours), so LED also can be used as the LCD backlight.Shown in Figure 1B, the general mode that the LED of several series connection is placed LCD one side that adopts in LED-backlit source, the light that LED sends enters LCD by light guide plate, astigmatism plate successively.
Shown in accompanying drawing 1C, because inorganic electroluminescence powder luminous (hereinafter to be referred as EL) panel is can whole luminous, therefore the backlight of being made by it does not need light guide plate, astigmatism plate, can make LCD become very frivolous like this, and characteristics such as the EL backlight has low-power consumption, area source, moulding is easy, color is attractive in appearance, but the EL backlight needs High Level AC Voltage to drive.
Compare with other backlight, because LCD is a kind of reflection type backlight source with the OLED backlight, its metal cladding is the specular layer that high reflectance is arranged, so the light that the OLED backlight does not need light guide plate, astigmatism plate just light-emitting layer can be sent directly reflexes to LCD.And the OLED backlight have brightness height, anti-punching press, frivolous (as for flexible substrate then more frivolous), advantage such as low in energy consumption, fine as the to meet requirement of LCD to backlight.
But, what LCD adopted with the OLED backlight in the prior art is whole formula illumination mode, because that the general employing of the anode of OLED device is the bigger transparency electrode ITO of resistance ratio, and OLED is originally as the current-injecting device, therefore cause inhomogeneous than the electric current issue of large tracts of land light source screen body, thereby cause whole screen body uniformity of luminance poor, and then influence the stability of photoluminescence of LCD display effect and OLED backlight itself.And because whole formula illuminating OLED backlight is in bright state all the time in the LCD procedure for displaying, this certainly will cause OLED backlight power consumption also bigger.
Summary of the invention
The technical problem to be solved in the present invention is at the problem that above-mentioned prior art met with, to design a kind of LCD OLED backlight of novelty.
The present invention proposes a kind of LCD, comprises LCDs, backlight and driver module, and wherein backlight is an organic electroluminescence panel, and this panel is lattice luminous screen, and the dot matrix number is at least two.
Pixel in the organic electroluminescence panel of the present invention be set to liquid crystal panel in pixel be complementary.
The size of the pixel in the above-mentioned organic electroluminescence panel and position be set to liquid crystal panel in Pixel Dimensions and position be complementary.
Each pixel in the organic electroluminescence panel of the present invention can be set to liquid crystal panel in being complementary of at least one sub-pixel.Each pixel in the organic electroluminescence panel also can be set to liquid crystal panel at least one pixel be complementary.
Technical scheme of the present invention not only can reach the effect that reduces OLED backlight power consumption, and, because oled panel is designed to lattice luminous, can improve luminous homogeneity and the stability of photoluminescence of backlight screen body so greatly, also help improving the display effect of LCD device.
Description of drawings:
Figure 1A is the synoptic diagram of CCFL as the LCD backlight;
Figure 1B is the synoptic diagram of LED as the LCD backlight;
Fig. 1 C is the synoptic diagram of inorganic EL as the LCD backlight;
Fig. 2 is the structural representation of dot matrix OLED of the present invention as the LCD backlight;
Fig. 3 is the section construction schematic perspective view of the embodiment of the invention 1;
Fig. 4 is the section construction schematic perspective view of the embodiment of the invention 2;
Wherein, the meaning of Reference numeral is as follows:
20 liquid crystal panels; 21 first polaroids; 22TFT; 23 liquid crystal layers; 24 colored filters; 25 second polaroids; 10 dot matrix oled panels; 30 first controllers; 40 second controllers; 1-1 is first sub-pixel in first pixel on the liquid crystal panel, and 2-2 is second sub-pixel in second pixel on the liquid crystal panel, and 3-2 is second sub-pixel in the 3rd pixel on the liquid crystal panel; 1W, 2W, 3W and 4W are respectively a pixel on the dot matrix OLED backlight panel.
Embodiment:
With reference to shown in Figure 2, wherein, liquid crystal panel includes one first polaroid, liquid crystal layer, color filter film and second polaroid.Certainly, can also be provided with a thin film transistor (TFT) array (TFT Array) in liquid crystal layer, and become a TFT type liquid crystal indicator.In addition, liquid crystal material in the liquid crystal layer also can have different selections according to the difference of the service orientation of liquid crystal indicator, for example, TN (Twisted Nematic) type, liquid crystal indicators such as STN (Super Twisted Nematic) type or DSTN (Double-layer Super Twist Nematic) type.
The basic structure of dot matrix oled panel comprises first electrode, organic function layer and second electrode, wherein comprises the white-light emitting layer of single or multiple lift in the organic function layer, can also comprise other functional layers such as hole transmission layer, electron transfer layer.
The backlight of the organic luminous panel of at least one dot matrix as liquid crystal indicator is set among the present invention.
In the OLED backlight panel of the present invention the size of light emitting pixel make with display panels in display pixel be complementary.Like this, when LCD is worked, can not will the OLED backlight is full frame lights, as long as it is luminous to go up in the corresponding driving OLED of the luminous location of pixels of needs the pixel on the correspondence position according to LCD.So, because the OLED backlight is not to be in full frame luminance all the time, can greatly reduce OLED backlight power consumption, simultaneously for whole formula is luminous, lattice luminous screen since be the point luminous, screen body uniformity of luminance is also improved significantly, thereby has further improved the stability of photoluminescence of screen body.
Wherein, the OLED backlight can use same driving governor (can be that passive drive also can be active driving) with LCD, also can use different driving governors respectively with LCD.Please this is embodied the claim the inside, thanks.
Embodiment 1:
As shown in Figure 3, being complementary of each pixel in the OLED backlight panel and a sub-pixel in each pixel in the liquid crystal panel, specifically be characterized as pixel such as 1W, 2W and 3W on the oled panel, in full accord with the size of sub-pixel of liquid crystal panel such as 1-1,1-2 and 1-3 respectively and the position is corresponding one by one.Like this, when the 1-1 in the liquid crystal indicator, 2-2 and 3-2 pixel are in when needing to show, corresponding OLED backlight 1W, 2W and 3W pixel then are in luminance, and other pixel on the OLED is then not luminous.
Embodiment 2:
As shown in Figure 4, each pixel in the OLED backlight panel and each pixel in the liquid crystal panel are complementary, and it is in full accord and the position is corresponding one by one specifically to be characterized as the size of pixel at sub-pixel of pixel on the oled panel such as 4W and liquid crystal panel such as 1-1 place.Like this, when the sub-pixel 1-1 in the liquid crystal indicator was in the needs demonstration, corresponding OLED backlight pixel 4W then was in luminance, and other pixel on the OLED is then not luminous.
Although describe the present invention in conjunction with the preferred embodiments, but the present invention is not limited to the foregoing description and accompanying drawing, should be appreciated that under the guiding of the present invention's design, those skilled in the art can carry out various modifications and improvement, and claims have been summarized scope of the present invention.
Claims (6)
1. a LCD comprises LCDs, backlight and driver module, it is characterized in that, described backlight is an organic electroluminescence panel, and this panel is lattice luminous screen.
2. LCD according to claim 1 is characterized in that, the luminous dot matrix in the described organic electroluminescence panel is at least two.
3. LCD according to claim 1 is characterized in that, the pixel in the described organic electroluminescence panel be set to liquid crystal panel in pixel be complementary.
4. LCD according to claim 3 is characterized in that, the size of the pixel in the described organic electroluminescence panel and position be set to liquid crystal panel in Pixel Dimensions and position be complementary.
5. according to claim 1, one of 3 or 4 described LCD, it is characterized in that, each pixel in the described organic electroluminescence panel be set to liquid crystal panel at least one sub-pixel be complementary.
6. according to claim 1, one of 3 or 4 described LCD, it is characterized in that, each pixel in the described organic electroluminescence panel be set to liquid crystal panel in being complementary of at least one pixel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100221095A CN101295096A (en) | 2007-04-28 | 2007-04-28 | LCD and back light source thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100221095A CN101295096A (en) | 2007-04-28 | 2007-04-28 | LCD and back light source thereof |
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| CN101295096A true CN101295096A (en) | 2008-10-29 |
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| CNA2007100221095A Pending CN101295096A (en) | 2007-04-28 | 2007-04-28 | LCD and back light source thereof |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103605238A (en) * | 2013-11-25 | 2014-02-26 | 广东欧珀移动通信有限公司 | Liquid crystal display screen and backlight module for same |
| WO2015106536A1 (en) * | 2014-01-16 | 2015-07-23 | 京东方科技集团股份有限公司 | Backlight module and display device |
| CN105278166A (en) * | 2015-12-04 | 2016-01-27 | 深圳市华星光电技术有限公司 | liquid crystal display device, array substrate thereof and manufacturing method of array substrate |
| CN105334667A (en) * | 2015-12-04 | 2016-02-17 | 深圳市华星光电技术有限公司 | Liquid crystal display device and array substrate thereof and method for manufacturing array substrate |
| CN105427804A (en) * | 2016-01-04 | 2016-03-23 | 京东方科技集团股份有限公司 | Display driving circuit and control method thereof, and display apparatus |
| CN105449115A (en) * | 2015-11-18 | 2016-03-30 | 深圳市华星光电技术有限公司 | Liquid crystal display and manufacturing method of OLED backlight |
| CN105551444A (en) * | 2016-03-02 | 2016-05-04 | 京东方科技集团股份有限公司 | Display device |
| CN107422533A (en) * | 2017-08-28 | 2017-12-01 | 惠科股份有限公司 | Backlight assembly and its manufacture method |
| CN107966857A (en) * | 2017-12-18 | 2018-04-27 | 京东方科技集团股份有限公司 | A kind of display device |
| CN109581747A (en) * | 2019-01-02 | 2019-04-05 | 京东方科技集团股份有限公司 | Light source module group and display module |
| CN111338127A (en) * | 2020-04-09 | 2020-06-26 | Tcl华星光电技术有限公司 | Display module and display device |
| CN111710306A (en) * | 2020-06-28 | 2020-09-25 | 深圳康佳电子科技有限公司 | Self-luminous LCD (liquid crystal display) screen, display device and television |
| WO2021259102A1 (en) * | 2020-06-23 | 2021-12-30 | 京东方科技集团股份有限公司 | Display module, display apparatus, and display module driving method |
| CN115016156A (en) * | 2022-06-28 | 2022-09-06 | 昆山龙腾光电股份有限公司 | Display device with switchable wide and narrow viewing angles and driving method |
-
2007
- 2007-04-28 CN CNA2007100221095A patent/CN101295096A/en active Pending
Cited By (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103605238A (en) * | 2013-11-25 | 2014-02-26 | 广东欧珀移动通信有限公司 | Liquid crystal display screen and backlight module for same |
| US9942961B2 (en) | 2014-01-16 | 2018-04-10 | Boe Technology Group Co., Ltd. | Backlight module and display apparatus |
| WO2015106536A1 (en) * | 2014-01-16 | 2015-07-23 | 京东方科技集团股份有限公司 | Backlight module and display device |
| CN105449115A (en) * | 2015-11-18 | 2016-03-30 | 深圳市华星光电技术有限公司 | Liquid crystal display and manufacturing method of OLED backlight |
| CN105449115B (en) * | 2015-11-18 | 2017-12-29 | 深圳市华星光电技术有限公司 | The preparation method of liquid crystal display and its OLED backlights |
| CN105278166A (en) * | 2015-12-04 | 2016-01-27 | 深圳市华星光电技术有限公司 | liquid crystal display device, array substrate thereof and manufacturing method of array substrate |
| CN105334667A (en) * | 2015-12-04 | 2016-02-17 | 深圳市华星光电技术有限公司 | Liquid crystal display device and array substrate thereof and method for manufacturing array substrate |
| CN105427804A (en) * | 2016-01-04 | 2016-03-23 | 京东方科技集团股份有限公司 | Display driving circuit and control method thereof, and display apparatus |
| US10223995B2 (en) | 2016-01-04 | 2019-03-05 | Boe Technology Group Co., Ltd. | Display device having a liquid crystal display panel and an OLED backlight |
| CN105427804B (en) * | 2016-01-04 | 2018-04-10 | 京东方科技集团股份有限公司 | A kind of display driver circuit and control method, display device |
| CN105551444A (en) * | 2016-03-02 | 2016-05-04 | 京东方科技集团股份有限公司 | Display device |
| CN105551444B (en) * | 2016-03-02 | 2018-01-23 | 京东方科技集团股份有限公司 | A kind of display device |
| CN107422533A (en) * | 2017-08-28 | 2017-12-01 | 惠科股份有限公司 | Backlight assembly and its manufacture method |
| CN107966857A (en) * | 2017-12-18 | 2018-04-27 | 京东方科技集团股份有限公司 | A kind of display device |
| CN107966857B (en) * | 2017-12-18 | 2020-07-31 | 京东方科技集团股份有限公司 | Display device |
| US10872936B2 (en) | 2017-12-18 | 2020-12-22 | Boe Technology Group Co., Ltd. | Display device having both organic electroluminescent display panel as backlight source and liquid crystal display panel |
| CN109581747A (en) * | 2019-01-02 | 2019-04-05 | 京东方科技集团股份有限公司 | Light source module group and display module |
| CN111338127A (en) * | 2020-04-09 | 2020-06-26 | Tcl华星光电技术有限公司 | Display module and display device |
| WO2021203460A1 (en) * | 2020-04-09 | 2021-10-14 | Tcl华星光电技术有限公司 | Display module and display device |
| US11353741B2 (en) | 2020-04-09 | 2022-06-07 | Tcl China Star Optoelectronics Technology Co., Ltd. | Display module and display device |
| WO2021259102A1 (en) * | 2020-06-23 | 2021-12-30 | 京东方科技集团股份有限公司 | Display module, display apparatus, and display module driving method |
| US11810528B2 (en) | 2020-06-23 | 2023-11-07 | Beijing Boe Optoelectronics Technology Co., Ltd. | Display assembly, display device and driving method for display assembly each combining data signals as dimming signal |
| CN111710306A (en) * | 2020-06-28 | 2020-09-25 | 深圳康佳电子科技有限公司 | Self-luminous LCD (liquid crystal display) screen, display device and television |
| CN111710306B (en) * | 2020-06-28 | 2022-03-01 | 深圳康佳电子科技有限公司 | Self-luminous LCD (liquid crystal display) screen, display device and television |
| CN115016156A (en) * | 2022-06-28 | 2022-09-06 | 昆山龙腾光电股份有限公司 | Display device with switchable wide and narrow viewing angles and driving method |
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Open date: 20081029 |