CN101950546A - Liquid crystal display device and display control method thereof - Google Patents
Liquid crystal display device and display control method thereof Download PDFInfo
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- CN101950546A CN101950546A CN2010102855330A CN201010285533A CN101950546A CN 101950546 A CN101950546 A CN 101950546A CN 2010102855330 A CN2010102855330 A CN 2010102855330A CN 201010285533 A CN201010285533 A CN 201010285533A CN 101950546 A CN101950546 A CN 101950546A
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Abstract
The invention discloses a liquid crystal display device and a display control method thereof. The liquid crystal display device comprises a television using a liquid crystal display. Two working modes comprising a full-screen mode and an energy-saving mode are provided, wherein in the energy-saving mode, an image is zoomed out and displayed on a sub display area in a liquid crystal panel, and the sub display area is lightened by a second backlight unit; and the full-screen mode is lightened by a first backlight unit. The method realizes the energy-saving mode without affecting the consistency of backlight lamps, and can prolong the service life of the liquid crystal display device at the same time.
Description
Technical field
The present invention relates to liquid crystal indicator, comprise the televisor that uses liquid crystal display, and the display control method of liquid crystal indicator.
Background technology
At present liquid crystal TV set positive excess the direction of large scale display screen develop, to satisfy the constantly HD video program of development, large-sized display screen can be showed high-definition image well and bring the effect of being personally on the scene, but liquid crystal is to present image by backlighted, big viewing area, meaning need be more backlight, makes power consumption also increase; Such as the picture that does not need high definition when the video of playing SD and the news program, at this moment giant-screen just relatively wastes energy but many times.
At above-mentioned phenomenon, open 2001-142409 and 2006-330222 communique the Japanese documentation spy, in above-mentioned patent gazette, solution has been proposed, in liquid crystal display, use a part of zone to come display image, it is the mode of local repressentation, and the backlight of display image area do not closed, among China patent announcement CN101645255A same solution is proposed also, but after long-term the use, to bring the part of back lamp more because of service time, and aging earlier, brightness decay is bigger, when watching full-screen image, occur easily causing the image quality deterioration like this because of backlight consistance difference; For solving the aging uneven phenomenon of this backlight, a kind of new solution appears again, see China patent announcement CN 101286305A, this patent is adjusted the position of next partial display area then by calculating the time of zones of different accumulative total work, realizes that thus the time used of each regional backlight is equal to substantially, thereby avoid the image quality deterioration, but the position of modified-image is unused for the user, and can not make the image after dwindling always be in an optimum position.
Summary of the invention
At the problems referred to above, one of purpose of this reality invention provides a kind of liquid crystal indicator that uses certain fixing sub-viewing area in the liquid crystal display to show complete picture, and under the impregnable situation of the consistance of brightness of backlight and colourity, realize energy-conservation when guaranteeing full screen display; Another object of the present invention provides the display control method of realizing above-mentioned liquid crystal indicator.
Liquid crystal indicator of the present invention comprises: liquid crystal panel; First back light unit, corresponding with the whole viewing area of liquid crystal panel, be used for illuminating whole liquid crystal display area; Second back light unit, corresponding with fixing sub-viewing area of liquid crystal panel, be used for illuminating this fixing sub-viewing area, described sub-viewing area belongs to the part in the whole liquid crystal display area; Backlight drive and switch unit drive first back light unit and second back light unit respectively, when being in screen mode toggle, backlight drive is switched to driving first back light unit, when being in energy saver mode, backlight drive is switched to driving second back light unit, and this moment, first back light unit was closed; And image zoom unit, be used for handling received image signal, the zoomed image signal, and the driving liquid crystal panel, when being in screen mode toggle, received image signal is driven and covers whole liquid crystal display area, when being in energy saver mode, received image signal is reduced, and is driven to certain fixing sub-viewing area, this stator viewing area and second back light unit correspondence.
As mentioned above, liquid crystal display control method of the present invention is realized by two kinds of mode of operations are provided, a kind of is screen mode toggle, external image intactly is presented at whole liquid crystal display area when screen mode toggle, the backlight corresponding with whole liquid crystal display area lighted, and we are called first back light unit with this group backlight; Another kind is an energy saver mode, when energy saver mode, external image is reduced and intactly be presented at certain fixing sub-viewing area in the whole liquid crystal display area, and the backlight corresponding with this stator viewing area lighted, and we are with this group second back light unit that is called backlight equally; The light-emitting area of obvious second back light unit or luminous general power are less than first back light unit, and back light unit consumed energy proportion in liquid crystal indicator is bigger, so under energy saver mode, the energy consumption of entire liquid crystal display device is significantly descended.
Compare with current other similar invention, key point of the present invention is that first back light unit is two different entities with second back light unit, when being in energy saver mode, first back light unit is in closed condition fully, that is to say that first back light unit corresponding with screen mode toggle do the as a whole while and lighted or close, so there is not the unequal problem of digestion time, in like manner, second group backlight does not exist the different problem of digestion time yet, so can not influence the consistance of backlight under the sort of mode of operation.
Just because of two groups of back light units are two different entities, so they can use different backlights, use CCFL (cold-cathode fluorescence lamp) to do backlight such as first back light unit, second back light unit uses the White LED backlight; Or use redgreenblue LED to make first back light unit, and make second backlight with the cheap relatively White LED of cost, adapt to the demand of different structures, cost and energy consumption by this class array mode, certain two back light units also can use identical backlight.
As everyone knows, in the liquid crystal indicator, what determine whole device lifetime is back light unit, and that the life-span of liquid crystal panel is longer than far away is backlight, first back light unit of the present invention and the respectively corresponding two kinds of different mode of operations of second back light unit belong to time-sharing work, suppose that the working time of two kinds of patterns equates, the life-span of device so of the present invention is the first backlight and second life-span sum backlight, thereby has increased the bulk life time of liquid crystal indicator.Which kind of mode of operation when this liquid crystal indicator need be in, can be decided by user's instruction, waits as the button of liquid crystal indicator self and infrared remote controller and transmit these external commands, and switch to the needed pattern of user.
Compare with existing similar technology, the present invention is not influencing realization energy conservation pattern under the conforming situation of backlight, and can prolong the life-span of liquid crystal indicator, especially is applied in some large-screen liquid crystal display television fields, can realize significantly energy-saving and cost-reducing.
The invention will be further described below in conjunction with drawings and Examples.
Description of drawings
Fig. 1 is the structured flowchart of the liquid crystal indicator in the embodiment of the invention
Fig. 2 A is the liquid crystal indicator screen-picture synoptic diagram when screen mode toggle in the embodiment of the invention
Fig. 2 B is the first back light unit synoptic diagram that the liquid crystal indicator in the embodiment of the invention is lighted when screen mode toggle
Fig. 3 A is the liquid crystal indicator screen-picture synoptic diagram when energy saver mode shows in the embodiment of the invention
Fig. 3 B is the second back light unit synoptic diagram that the liquid crystal indicator in the embodiment of the invention is lighted when energy saver mode
Fig. 4 is the complete structure of backlight unit synoptic diagram of the liquid crystal indicator in the embodiment of the invention
Fig. 5 is the complete smooth cellular construction synoptic diagram that the liquid crystal indicator in the embodiment of the invention uses two kinds of different backlights
Fig. 6 is the schematic flow sheet of the liquid crystal indicator display image method in the embodiment of the invention
Embodiment
Fig. 1 is the structured flowchart of the liquid crystal indicator in the embodiment of the invention, and it comprises radiofrequency signal input RF; The channel that links to each other with RF receives selected cell 107, is used for selecting the needed frequency of user; Selected frequency (channel) is carried out audio/video decoding unit 106; Decoded image is carried out the image zoom unit 105 that convergent-divergent is handled; Image after convergent-divergent is handled is delivered to liquid crystal panel 103; Be used for receiving command reception and the control module 104 and the keypad 101 of external command (user instruction); Backlight drive and switch unit 102 are used for driving (lighting) first backlight and second back light unit; First back light unit 200 of corresponding whole on-screen display (osd) area; Second back light unit 300 is positioned at the central authorities or the zone on the lower side of whole screen, only lights a corresponding sub-viewing area of its top; The telepilot 100 that wear the outside provides the wireless input of external command; From said structure and function as can be seen, the structure of this example and current LCD TV is almost identical, difference is that the present invention has used second back light unit 300, backlight driving unit more than 102 corresponding driving second switching backlight, also have image zoom unit 105 that a littler picture size can be provided, and current liquid crystal image unit for scaling 105 also itself also provides image zooming function, scaled images is just to be shown to whole screen, and has only first back light unit of corresponding whole screen.
The invention provides two kinds of mode of operations, a kind of is screen mode toggle, when this pattern, image zoom unit 105 scales the images to and just is shown to whole screen area, shown in Fig. 2 A, wherein screen outer-border 401, whole on-screen display (osd) area 402, shown image are two row's alphabetic strings, and backlight drive and switch unit 102 are switched to and drive first back light unit simultaneously, promptly light first back light unit and illuminate whole screen, present full-screen image; First back light unit is seen Fig. 2 B, is covered with many LED lamps 201 in the screen outer-border 401 equably, and these LED have formed first back light unit, and for the purpose of difference, we represent the LED lamp of first back light unit with circle.
The present invention in another mode of operation be energy saver mode, when this pattern, image zoom unit 105 narrows down to image and just is shown to a corresponding sub-viewing area of second back light unit top, this sub-viewing area belongs to the part of whole on-screen display (osd) area in the central authorities of whole viewing area or position on the lower side; As shown in Figure 3A, wherein screen outer-border 401, sub-viewing area 403, and it is positioned at whole viewing area 402, for ease of understanding, at sub-edge of display area with dashed lines mark, shown image is still two to arrange alphabetic strings (selecting identical image for use), just dwindles, backlight drive and switch unit 102 are switched to and drive second back light unit simultaneously, promptly light second backlightly, illuminate the sub-viewing area corresponding, present a downscaled images in the central authorities of screen with it; Second back light unit is seen Fig. 3 B, screen outer-border 401 central a part of zones LED lamp 301 that distributing equably, and these LED have formed second back light unit, and for the purpose of difference, we are with the square LED lamp of representing second back light unit.
Fig. 4 is the complete structure of backlight unit synoptic diagram of the liquid crystal indicator in the embodiment of the invention, from figure, can clearly find out, first back light unit and second back light unit are that diverse LED lamp is formed, it is different entities, the LED lamp 301 usefulness squares of second back light unit represent that the first back light unit LED lamp, 201 usefulness circles are represented; The quantity of second backlight obviously is less than first back light unit, and its illuminated area is also less, so its total luminous power less than first back light unit, that is to say to have relatively little power consumption, so energy saver mode can be realized relatively little power; And first backlight is closed fully when energy saver mode, and screen mode toggle is just opposite, and second backlight is closed fully, and the entire liquid crystal display device life-span of the present invention in other words is two groups of back light unit sums.
In above-mentioned inventive embodiments employed backlight all be that LED does light source, we can be as required in the actual design, use the mode of different backlight combinations, see Fig. 5, first back light unit 201 uses CCFL (cold-cathode fluorescence lamp) light source, and second back light unit 301 uses led light source, can realize littler power consumption at energy saver mode like this, and screen mode toggle employed first CCFL backlight has cost advantage; According to the radiation modality of LED-backlit, be divided into straight-down negative and side entering type usually, what this example provided is straight-down negative, but the present invention is equally applicable to the side entering type LED-backlit, and just it is remarkable not as straight-down negative at the energy saver mode energy-saving effect.
We can also further extend on basis of the present invention if desired, increase by the 3rd back light unit, show a littler image, so that a more energy-conservation energy saver mode is provided; Increase the back light unit more than three by that analogy.
Fig. 6 is the schematic flow sheet of the liquid crystal indicator display image method in the embodiment of the invention, after the machine start, from beginning operation, at first read the mode of operation information that last time, shutdown was preserved, and carry out the order of this pattern, if energy saver mode, image zoom unit downscaled images then, and show in the sub-viewing area in screen that backlight drive and switch unit are lighted second back light unit, close first back light unit; If screen mode toggle, then the image zoom unit scales the images to and just is shown to whole screen area, and backlight drive and switch unit are lighted first back light unit, close second back light unit; If receive outside mode switch instruction in the work, the corresponding mode instruction of the same execution, and this pattern is kept in the memory body, so that next time, start can keep and preceding once the same mode of operation; Certainly, also can not preserve last mode of operation, but each start is given tacit consent to all at screen mode toggle or energy saver mode as a kind of selection.
In the present invention, further improvement makes liquid crystal indicator produce corresponding mode of operation order according to self judging, realizes automaticallying switch; Such as the height of analyzing received image signal resolution, when image be SD or more low resolution then enter energy saver mode, exceed SD resolution and then enter screen mode toggle; Perhaps add heat and release the infrared detecting unit of Denging, according to judging before the liquid-crystal apparatus whether spectators are arranged, and enter corresponding work mode.
Claims (5)
1. liquid crystal indicator, its feature comprises:
Liquid crystal panel;
First back light unit, corresponding with the whole viewing area of liquid crystal panel, be used for illuminating the whole viewing area of liquid crystal;
Second back light unit, corresponding with a sub-viewing area of fixing in the liquid crystal panel, be used for illuminating this sub-viewing area, described sub-viewing area belongs to the part in the whole viewing area of liquid crystal panel;
Backlight drive and switch unit drive first back light unit and second back light unit respectively, when being in screen mode toggle, backlight drive is switched to driving first back light unit, when being in energy saver mode, backlight drive is switched to driving second back light unit, and this moment, first back light unit was closed; And
The image zoom unit, be used for handling received image signal, the zoomed image signal, and the driving liquid crystal panel, when being in screen mode toggle, received image signal is driven the whole viewing area of covering liquid crystal panel, when being in energy saver mode, received image signal is reduced, and is driven in the liquid crystal panel a fixing sub-viewing area, this sub-viewing area belong in the whole viewing area of liquid crystal panel a part and and the second back light unit correspondence;
Described first back light unit belongs to two different entities with second back light unit.
2. liquid crystal indicator according to claim 1 is characterized in that: the light-emitting area of described second back light unit or overall luminous power are less than first back light unit.
3. liquid crystal indicator according to claim 1 is characterized in that: described first back light unit and second back light unit use light source of the same type or use dissimilar light sources.
4. liquid crystal indicator according to claim 1 is characterized in that: described liquid crystal indicator also comprises the broadcast television signal receiving element.
5. the display control method of a liquid crystal indicator, described liquid crystal indicator comprises: liquid crystal panel; First back light unit corresponding with the whole viewing area of liquid crystal panel; With the second corresponding back light unit of a stator viewing area in the liquid crystal panel; Backlight drive and switch unit; The image zoom unit; Described first back light unit belongs to two different entities with second back light unit; Described liquid crystal indicator is operated in screen mode toggle and energy saver mode two states, and the step of its display control method is:
A: receive the mode command of operate outside mode command or this machine of reading storage, and carry out corresponding mode command;
B: screen mode toggle command process: the image zoom unit drives the whole viewing area that is shown to liquid crystal panel with the picture signal of input, backlight drive and switch unit switch to and drive first back light unit, this moment, first back light unit was lighted, and second back light unit is closed;
C: energy saver mode command process: the image zoom unit dwindles input picture, and intactly be presented at sub-viewing area corresponding on the LCDs with second back light unit, backlight drive and switch unit switch to and drive second back light unit, and this moment, second back light unit was lighted, and first back light unit is closed.
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| CN2010102855330A CN101950546A (en) | 2010-09-17 | 2010-09-17 | Liquid crystal display device and display control method thereof |
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| CN2010102855330A CN101950546A (en) | 2010-09-17 | 2010-09-17 | Liquid crystal display device and display control method thereof |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102857643A (en) * | 2011-07-01 | 2013-01-02 | 中兴通讯股份有限公司 | Method and device for saving power for mobile terminal |
| CN103544920A (en) * | 2013-10-31 | 2014-01-29 | 海信集团有限公司 | Method, device and electronic device for screen display |
| WO2014101085A1 (en) * | 2012-12-28 | 2014-07-03 | Intel Corporation | Displaying area adjustment |
| CN103915072A (en) * | 2014-03-24 | 2014-07-09 | 京东方科技集团股份有限公司 | Display system and driving method thereof |
| WO2015027770A1 (en) * | 2013-08-30 | 2015-03-05 | 中兴通讯股份有限公司 | Terminal displaying method and apparatus |
| CN105070267A (en) * | 2015-07-15 | 2015-11-18 | 友达光电股份有限公司 | Display system with peep-proof function and display method thereof |
| CN105278129A (en) * | 2014-08-15 | 2016-01-27 | 宏祐图像科技(上海)有限公司 | Exclusive Mura restoration framework for secondary development of LCD panel |
| CN107093409A (en) * | 2017-05-17 | 2017-08-25 | 南京巨鲨显示科技有限公司 | A kind of intelligence breath screen device and method for medical display |
| CN108597435A (en) * | 2018-04-28 | 2018-09-28 | 京东方科技集团股份有限公司 | Method and its device, the display device of display for controlling the display panel |
| CN111208894A (en) * | 2018-11-01 | 2020-05-29 | 西安易朴通讯技术有限公司 | Screen display control method and system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102857643A (en) * | 2011-07-01 | 2013-01-02 | 中兴通讯股份有限公司 | Method and device for saving power for mobile terminal |
| WO2014101085A1 (en) * | 2012-12-28 | 2014-07-03 | Intel Corporation | Displaying area adjustment |
| US10317977B2 (en) | 2012-12-28 | 2019-06-11 | Intel Corporation | Displaying area adjustment |
| WO2015027770A1 (en) * | 2013-08-30 | 2015-03-05 | 中兴通讯股份有限公司 | Terminal displaying method and apparatus |
| CN104423823A (en) * | 2013-08-30 | 2015-03-18 | 中兴通讯股份有限公司 | Display method and device of terminal |
| CN103544920A (en) * | 2013-10-31 | 2014-01-29 | 海信集团有限公司 | Method, device and electronic device for screen display |
| US9715719B2 (en) | 2014-03-24 | 2017-07-25 | Boe Technology Group Co., Ltd. | Display system and driving method thereof |
| CN103915072A (en) * | 2014-03-24 | 2014-07-09 | 京东方科技集团股份有限公司 | Display system and driving method thereof |
| WO2015143829A1 (en) * | 2014-03-24 | 2015-10-01 | 京东方科技集团股份有限公司 | Display system and drive method therefor |
| CN105278129A (en) * | 2014-08-15 | 2016-01-27 | 宏祐图像科技(上海)有限公司 | Exclusive Mura restoration framework for secondary development of LCD panel |
| CN105278129B (en) * | 2014-08-15 | 2018-09-04 | 宏祐图像科技(上海)有限公司 | A kind of private Mura for liquid crystal display panel secondary development repairs framework |
| CN105070267A (en) * | 2015-07-15 | 2015-11-18 | 友达光电股份有限公司 | Display system with peep-proof function and display method thereof |
| CN107093409A (en) * | 2017-05-17 | 2017-08-25 | 南京巨鲨显示科技有限公司 | A kind of intelligence breath screen device and method for medical display |
| CN108597435A (en) * | 2018-04-28 | 2018-09-28 | 京东方科技集团股份有限公司 | Method and its device, the display device of display for controlling the display panel |
| CN108597435B (en) * | 2018-04-28 | 2021-10-29 | 京东方科技集团股份有限公司 | Method for controlling display of display panel, device thereof and display device |
| CN111208894A (en) * | 2018-11-01 | 2020-05-29 | 西安易朴通讯技术有限公司 | Screen display control method and system |
| CN112835631A (en) * | 2021-03-29 | 2021-05-25 | 聚好看科技股份有限公司 | Method for starting homepage application and display device |
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