CN100584142C - Back light modulating and changing method for plane display - Google Patents

Back light modulating and changing method for plane display Download PDF

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Publication number
CN100584142C
CN100584142C CN200410077913A CN200410077913A CN100584142C CN 100584142 C CN100584142 C CN 100584142C CN 200410077913 A CN200410077913 A CN 200410077913A CN 200410077913 A CN200410077913 A CN 200410077913A CN 100584142 C CN100584142 C CN 100584142C
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China
Prior art keywords
backlight module
backlight
bosom
zone
outermost
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Expired - Fee Related
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CN200410077913A
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Chinese (zh)
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CN1750732A (en
Inventor
张堡棋
刘昌和
张育宪
钟俊甫
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Industrial Technology Research Institute ITRI
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Industrial Technology Research Institute ITRI
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Priority to CN200410077913A priority Critical patent/CN100584142C/en
Publication of CN1750732A publication Critical patent/CN1750732A/en
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
    • Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection

Abstract

A method for adjusting backlight source of plane display device, which contains switching on display screen, detecting backlight module of odd number or even number in said plane display device, if the number of backlight module is odd number then driving a backlight module in most central area, if the number of backlight module is even number then driving one of two backlight modules in cost central area, switching on backlight module in one side adjacent the central area, next time switching on the backlight module in another side adjacent the central area and switching off backlight module in central area, according to this order to switching on all backlight modules extended from center to the outer to complete a circulation, then ending.

Description

Back light resource changping method for plane display
Technical field
The present invention relates to a kind of back light resource changping method for plane display and transfer or type of drive, refer to a kind of change that utilizes the backlight module sequence of light especially, improve the uneven phenomenon of picture brightness.
Background technology
The development of electronic product is in recent decades thing only, but its speed of development is placed oneself above on the other industries, especially the audio-visual aspect of computer related peripheral and audiovisual product, more because the demand of people's work or leisure aspect, further significant progress is more arranged, and the release of new product is constantly arranged.With regard to such as display (Display), traditional display is constituted by a traditional iconoscope, and it has following shortcoming:
1. traditional monitor is an on-plane surface, can produce the phenomenon of image distortion on the picture when therefore watching.
2. iconoscope is bigger in the consumed power of concerned power, and it is bigger that meaning is its power consumption, can produce the high temperature and the hot phenomenon of display simultaneously.
3. the volume that is subject to traditional iconoscope is excessive, makes the volume of display to reduce, and produces inconvenience in the use sometimes because of usage space is too little.
Because of traditional monitor has above-mentioned defective, so there is manufacturer to drop into the follow-on display of exploitation, and comprising LCD and plasma display etc. are arranged, but it seems at present, the manufacturing technology of LCD is comparatively ripe, and its price has been reduced near traditional crt display, and this LCD plurality of advantages of having low radiation, low power consumption, small size and watching the visual angle more greatly, thus widely generally the user like.
LCD is applied to computer display mostly at present, display (as: the mobile phone of LCD TV and 3C electric equipment products, digital camera) etc., the aspect of using is considerably extensive, because liquid crystal material itself can't be by self producing any light when showing, human eye is not easy to do and directly observes, therefore nearly all display panels all can add some backlight modules (Backlight), making the picture of LCD do one by enough brightness clearly shows, but in order to save the spent electric power of LCD, all backlight modules can't be lighted simultaneously, it must follow liquid crystal pixel with from top to bottom, or order from the bottom to top, light backlight module in regular turn, to reach the clear purpose that shows and save electric power.When utilizing the pattern that traditional backlight module lighted, for example when some fluorescent tubes of the picture first half are lighted, some fluorescent tubes of picture Lower Half then are closed condition, though it is should the time very of short duration, this moment, human eye still was the problem of discernable frame out brightness irregularities, and can throw doubt upon for the quality bills of materials of LCD Panel, so how to avoid this phenomenon, promptly become the improved problem of institute's desire of the present invention.
Summary of the invention
Based on the defective that solves the above prior art, main purpose of the present invention is to propose a kind of back light resource changping method for plane display or type of drive, utilize the change of backlight module sequence of light, solve display delay, improve the uneven phenomenon of picture brightness.
For reaching above-mentioned purpose, first implementation method of back light resource changping method for plane display of the present invention includes the following step:
Step 31 is opened display frame;
Step 32 detects the backlight module that this flat-panel screens has odd number and one of them number of even number;
Step 33 when ading up to odd number as if this backlight module, then drives a backlight module in zone, bosom;
Step 34, when if this backlight module adds up to even number, then drive the backlight module that is positioned at first side in two backlight modules in zone, bosom, open the backlight module that is positioned at second side in two backlight modules in this zone, bosom, and close this backlight module that has driven in this zone, bosom;
Step 35, open the backlight module of first side in contiguous this zone, bosom, and close this backlight module that has driven in this zone, bosom, and open the backlight module of second side in contiguous this zone, bosom more next time, and close the backlight module of having opened of first side in contiguous this zone, bosom, an opening sequence is extended by middle mind-set two outsides according to this, up to all backlight modules be unlocked finish after, and finish a circulation;
Step 36, is display frame closed? otherwise the step of repeating step (31) to (35); And
Step 37 finishes.
For reaching above-mentioned purpose, second implementation method of back light resource changping method for plane display of the present invention includes the following step:
Step 41 is opened display frame;
Step 42 detects the backlight module that this flat-panel screens has odd number and one of them number of even number;
Step 43, open the backlight module that is positioned at first side in the backlight module of territory, outermost two lateral areas, open the backlight module that is positioned at second side in the backlight module of territory, outermost two lateral areas more next time, and be positioned at the backlight module of first side in territory, the outermost two lateral areas backlight module of once opening before closing, continue open contiguous two outermost two backlight modules one of them, and be positioned at the backlight module of second side in territory, the outermost two lateral areas backlight module of once opening before closing, an opening sequence according to this, extend by outermost two side direction centers, be unlocked up to all backlight modules and finish, extend unlatching and close backlight module by center, two laterals, and finish a circulation;
Step 44 when ading up to odd number as if this backlight module, then is driven to a backlight module in bosom at last;
Step 45, if this backlight module when ading up to even number, then be driven at last the zone, bosom two backlight modules one of them; And
Step 46, is display frame closed? the step of repeating step 41 to 45; And
Step 47 finishes.
The invention solves the display delay problem, improved the uneven phenomenon of picture brightness.
Description of drawings
Figure 1A, 1B light first of order for the backlight module of display frame of the present invention and implement illustration;
Fig. 2 A, 2B light second of order for the backlight module of display frame of the present invention and implement illustration;
Fig. 3 is the time control chart of scan line of the present invention and backlight module;
Fig. 4 A is the display frame schematic diagram after the present invention's first backlight module is lighted;
Fig. 4 B is the display frame schematic diagram after the present invention's second backlight module is lighted;
Fig. 4 C is the display frame schematic diagram after the present invention's the 3rd backlight module is lighted;
Fig. 4 D is the display frame schematic diagram after the present invention's the 4th backlight module is lighted;
Fig. 4 E is the display frame schematic diagram after the present invention's the 5th backlight module is lighted;
Fig. 4 F is the display frame schematic diagram after the present invention's the 6th backlight module is lighted;
Fig. 5 is the first implementing procedure figure of backlight module modulation of the present invention;
Fig. 6 is the second implementing procedure figure of backlight module modulation of the present invention.
Description of reference numerals:
1-display frame
11-first backlight module
12-second backlight module
13-the 3rd backlight module
14-the 4th backlight module
15-the 5th backlight module
16-the 6th backlight module
2-display frame
21-first backlight module
22-second backlight module
23-the 3rd backlight module
24-the 4th backlight module
25-the 5th backlight module
Step 31-opens display frame
Step 32-detects the backlight module that this flat-panel screens has odd number and one of them number of even number
When step 33-adds up to odd number as if this backlight module, then drive a backlight module in zone, bosom
Step 34, when if this backlight module adds up to even number, then drive the backlight module that is positioned at first side in two backlight modules in zone, bosom, open the backlight module that is positioned at second side in two backlight modules in this zone, bosom, and close this backlight module that has driven in this zone, bosom;
Step 35, open the backlight module of first side in contiguous this zone, bosom, and close this backlight module that has driven in this zone, bosom, and open the backlight module of second side in contiguous this zone, bosom more next time, and close the backlight module of having opened of first side in contiguous this zone, bosom, an opening sequence is extended by middle mind-set two outsides according to this, up to all backlight modules be unlocked finish after, and finish a circulation;
Is step 36-display frame closed? otherwise the step of repeating step (31) to (35)
Step 37-finishes
Step 41-opens display frame
Step 42-detects the backlight module that this flat-panel screens has odd number and one of them number of even number
Step 43, open the backlight module that is positioned at first side in the backlight module of territory, outermost two lateral areas, open the backlight module that is positioned at second side in the backlight module of territory, outermost two lateral areas more next time, and be positioned at the backlight module of first side in territory, the outermost two lateral areas backlight module of once opening before closing, continue open contiguous two outermost two backlight modules one of them, and be positioned at the backlight module of second side in territory, the outermost two lateral areas backlight module of once opening before closing, an opening sequence according to this, extend by outermost two side direction centers, be unlocked up to all backlight modules and finish, extend unlatching and close backlight module by center, two laterals, and finish a circulation;
When step 44-adds up to odd number as if this backlight module, then be driven to a backlight module in bosom at last
Step 45-if this backlight module when ading up to even number, then be driven at last the zone, bosom two backlight modules one of them
Is step 46-display frame closed? the step of repeating step (41) to (45)
Step 47-finishes
Embodiment
Below with literal conjunction with figs. explanation the present invention for reaching employed technological means of purpose and effect, the present technique means are mainly used in LCD (LCD) and Organic Light Emitting Diode (OLED), and the cited embodiment of accompanying drawing only is an aid illustration, but the application's technological means is not limited to cited accompanying drawing.
See also shown in Figure 1A, the 1B, light first of order for the backlight module of display frame of the present invention and implement illustration, wherein in a display frame 1, be provided with even number backlight module (present embodiment is six) in this accompanying drawing, this display frame 1 center comprises first backlight module 11 and second backlight module 12, outwards is extended with the 3rd backlight module 13, the 4th backlight module 14, the 5th backlight module 15 and the 6th backlight module 16 more in regular turn.And display frame is in carrying out the order that backlight module is lighted, as: step S11 is for lighting first backlight module 11; Step S12 is for lighting second backlight module 12, and closes first backlight module 12; Step S13 is for lighting the 3rd backlight module 13, and closes second backlight module 12; Step S14 is for lighting the 4th backlight module 13, and closes the 3rd backlight module 12; Step S15 is for lighting the 5th backlight module 12, and closes the 4th backlight module 13; Step S16 is for lighting the 6th backlight module 11, and closes the 5th backlight module 12.When display frame 1 is not closed, light continuous circulation as one to the order of step S16 with step S11.
See also shown in Fig. 2 A, the 2B, light second of order for the backlight module of display frame of the present invention and implement illustration, wherein in a display frame 2, be provided with odd number backlight module (present embodiment is five) in this accompanying drawing, one backlight module of these display frame 2 centers is first backlight module 21, is outward extended with second backlight module 22, the 3rd backlight module 23, the 4th backlight module 24 and the 5th backlight module more in regular turn.And display frame is in carrying out the order that backlight module is lighted, as: step S21 is for lighting first backlight module 21; Step S22 is for lighting second backlight module 22, and closes first backlight module 22; Step S23 is for lighting the 3rd backlight module 23, and closes second backlight module 22; Step S24 is for lighting the 4th backlight module 23, and closes the 3rd backlight module 22; Step S25 is for lighting the 5th backlight module 22, and closes the 4th backlight module 23.When display frame 2 is not closed, light continuous circulation as one to the order of step S25 with step S21.
Comprehensive Figure 1A, 1B and Fig. 2 A, 2B are disclosed, no matter are the backlight modules of odd number or even number, and the backlight module of its display frame is lighted order, are all and extend the operation of lighting and closing laterally from central point earlier.Certainly those skilled in the art also can light backlight module order and extend the operation of lighting and closing from the lateral central point earlier.
See also shown in Figure 3, time control chart for scan line of the present invention and backlight module, the opening sequence of the X-axis coordinate representation backlight module of this icon wherein, the arrangement preface that the backlight module of this accompanying drawing is opened is along being: first backlight module-＞the second backlight module-＞the, three backlight modules-＞the first backlight module etc. circulates in proper order.The position of the Y-axis coordinate representation scan line of this accompanying drawing, scan line position in present embodiment from top to bottom, being the 1st arranges in regular turn to the 480th, this scan line on average is divided into six equal portions (supposing that this backlight module is six groups), therefore every group of backlight module contained 80 scan lines, can learn that first backlight module is by the 161st to the 240th; Second backlight module is the 241st to the 320th; The 3rd backlight module is the 81st to the 160th; The 4th backlight module is the 321st to the 400th; The 5th backlight module is the 1st to the 80th; The 6th backlight module is the 401st to the 480th.With reference to this accompanying drawing and with reference to Figure 1A, 1B and Fig. 2 A, 2B, can understand the corresponding relation of scan line and backlight module.
See also shown in Fig. 4 A, be the display frame schematic diagram of the present invention's first backlight module after lighting, first backlight module of the center of its display frame is lighted, and second and third, four, five, six backlight modules then are closed.
See also shown in Fig. 4 B, be the display frame schematic diagram of the present invention's second backlight module after lighting, second backlight module of its display frame center is lighted, and the one three, four, five, six backlight modules then are closed.
See also shown in Fig. 4 C, be the display frame schematic diagram of the present invention's the 3rd backlight module after lighting, the 3rd backlight module of the contiguous center of its display frame is lighted, and first and second, four, five, six backlight modules then are closed.
See also shown in Fig. 4 D, be the display frame schematic diagram of the present invention's the 4th backlight module after lighting, the 4th backlight module of the contiguous center of its display frame is lighted, and first, second and third, five, six backlight modules then are closed.
See also shown in Fig. 4 E, be the display frame schematic diagram of the present invention's the 5th backlight module after lighting, the 5th backlight module at its display frame outermost two side places is lighted, and first, second, third and fourth, six backlight modules then are closed.
See also shown in Fig. 4 F, be the display frame schematic diagram of the present invention's the 6th backlight module after lighting, the 6th backlight module at its display frame outermost two side places is lighted, and first, second, third and fourth, five backlight modules then are closed.
According to disclosing of Figure 1A, 1B and Fig. 2 A, 2B, just can put out following implementing procedure figure in order:
See also shown in Figure 5ly, be the first implementing procedure figure of backlight module modulation of the present invention, it includes the following step:
Step 31-opens display frame;
Step 32-detects the backlight module that this flat-panel screens has odd number and one of them number of even number;
When step 33-adds up to odd number as if this backlight module, then drive a backlight module in zone, bosom;
Step 34, when if this backlight module adds up to even number, then drive the backlight module that is positioned at first side in two backlight modules in zone, bosom, open the backlight module that is positioned at second side in two backlight modules in this zone, bosom, and close this backlight module that has driven in this zone, bosom;
Step 35, open the backlight module of first side in contiguous this zone, bosom, and close this backlight module that has driven in this zone, bosom, and open the backlight module of second side in contiguous this zone, bosom more next time, and close the backlight module of having opened of first side in contiguous this zone, bosom, an opening sequence is extended by middle mind-set two outsides according to this, up to all backlight modules be unlocked finish after, and finish a circulation;
Is step 36-display frame closed? otherwise the step of repeating step 31 to 35; And
Step 37-finishes.
See also shown in Figure 6ly, be the second implementing procedure figure of backlight module modulation of the present invention, it includes the following step:
Step 41-opens display frame;
Step 42-detects the backlight module that this flat-panel screens has odd number and one of them number of even number;
Step 43, open the backlight module that is positioned at first side in the backlight module of territory, outermost two lateral areas, open the backlight module that is positioned at second side in the backlight module of territory, outermost two lateral areas more next time, and be positioned at the backlight module of first side in territory, the outermost two lateral areas backlight module of once opening before closing, continue open contiguous two outermost two backlight modules one of them, and be positioned at the backlight module of second side in territory, the outermost two lateral areas backlight module of once opening before closing, an opening sequence according to this, extend by outermost two side direction centers, be unlocked up to all backlight modules and finish, extend unlatching and close backlight module by center, two laterals, and finish a circulation;
When step 44-adds up to odd number as if this backlight module, then be driven to a backlight module in bosom at last;
Step 45-if this backlight module when ading up to even number, then be driven at last the zone, bosom two backlight modules one of them;
Is step 46-display frame closed? the step of repeating step 41 to 45; And
Step 47-finishes.
In sum, architectural feature of the present invention and each embodiment are open in detail, and the major technique means are to utilize the change of backlight module sequence of light, improve the uneven phenomenon of picture brightness.
The above only is preferred embodiment of the present invention, can not limit the scope that the present invention implements, and all equivalences of doing according to claim of the present invention change and revise, and all belong to protection scope of the present invention.

Claims (6)

1. a back light resource changping method for plane display is characterized in that, includes:
Step 31 is opened display frame;
Step 32 detects the backlight module that this flat-panel screens has odd number and one of them number of even number;
Step 33 when ading up to odd number as if this backlight module, then drives a backlight module in zone, bosom, changes step 35;
Step 34, when if this backlight module adds up to even number, then drive the backlight module that is positioned at first side in two backlight modules in zone, bosom, open the backlight module that is positioned at second side in two backlight modules in this zone, bosom, and close this backlight module that has driven in this zone, bosom;
Step 35, open the backlight module of first side in contiguous this zone, bosom, and close this backlight module that has driven in this zone, bosom, and open the backlight module of second side in contiguous this zone, bosom more next time, and close the backlight module of having opened of first side in contiguous this zone, bosom, an opening sequence is extended by middle mind-set two outsides according to this, up to all backlight modules be unlocked finish after, and finish a circulation;
Step 36, is display frame closed? otherwise the step of repeating step 31 to 35; And
Step 37 finishes.
2. a kind of back light resource changping method for plane display as claimed in claim 1, wherein this flat-panel screens is a LCD.
3. a kind of back light resource changping method for plane display as claimed in claim 1, wherein this flat-panel screens is an organic light emitting diode display.
4. back light resource changping method for plane display, it includes:
Step 41 is opened display frame;
Step 42 detects the backlight module that this flat-panel screens has odd number and one of them number of even number;
Step 43, open the backlight module that is positioned at first side in the backlight module of territory, outermost two lateral areas, open the backlight module that is positioned at second side in the backlight module of territory, outermost two lateral areas more next time, and be positioned at the backlight module of first side in territory, the outermost two lateral areas backlight module of once opening before closing, continue open contiguous two outermost two backlight modules one of them, and be positioned at the backlight module of second side in territory, the outermost two lateral areas backlight module of once opening before closing, an opening sequence according to this, extend by outermost two side direction centers, be unlocked up to all backlight modules and finish, extend unlatching and close backlight module by center, two laterals, and finish a circulation;
Step 44 when ading up to odd number as if this backlight module, then is driven to a backlight module in bosom at last;
Step 45, if this backlight module when ading up to even number, then be driven at last the zone, bosom two backlight modules one of them;
Step 46, is display frame closed? otherwise the step of repeating step 41 to 45; And
Step 47 finishes.
5. a kind of back light resource changping method for plane display as claimed in claim 4, wherein this flat-panel screens is a LCD.
6. a kind of back light resource changping method for plane display as claimed in claim 4, wherein this flat-panel screens is an organic light emitting diode display.
CN200410077913A 2004-09-17 2004-09-17 Back light modulating and changing method for plane display Expired - Fee Related CN100584142C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN200410077913A CN100584142C (en) 2004-09-17 2004-09-17 Back light modulating and changing method for plane display

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN200410077913A CN100584142C (en) 2004-09-17 2004-09-17 Back light modulating and changing method for plane display

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CN100584142C true CN100584142C (en) 2010-01-20

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102750912B (en) * 2012-07-13 2015-04-08 冠捷显示科技（厦门）有限公司 LED backlight dynamic control device and control method thereof
CN102831842A (en) * 2012-08-17 2012-12-19 青岛海信电器股份有限公司 Backlight source, display device and 3D television

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