CN201278068Y - Field sequential color liquid crystal display - Google Patents
Field sequential color liquid crystal display Download PDFInfo
- Publication number
- CN201278068Y CN201278068Y CNU2008202120313U CN200820212031U CN201278068Y CN 201278068 Y CN201278068 Y CN 201278068Y CN U2008202120313 U CNU2008202120313 U CN U2008202120313U CN 200820212031 U CN200820212031 U CN 200820212031U CN 201278068 Y CN201278068 Y CN 201278068Y
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- liquid crystal
- crystal display
- driver
- lcds
- sequential color
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 54
- 239000000463 material Substances 0.000 claims description 8
- 238000010521 absorption reaction Methods 0.000 claims description 3
- 230000003287 optical effect Effects 0.000 claims description 3
- 239000011159 matrix material Substances 0.000 abstract description 5
- 230000003068 static effect Effects 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 8
- 241001025261 Neoraja caerulea Species 0.000 description 2
- 239000003086 colorant Substances 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
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- Liquid Crystal Display Device Control (AREA)
- Liquid Crystal (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The utility model relates to a field sequential color liquid crystal display which comprises a liquid crystal display screen, a back light source, a back light source driver and a liquid crystal display screen driver. The back light source is arranged at the bottom side of the liquid crystal display screen; the back light source driver and the liquid crystal display screen driver respectively drive the back light source and the liquid crystal display screen; and the liquid crystal display screen driver is a dynamic driver. The utility model overcomes the problem that for a long time the field sequential color liquid crystal display can only adopt static drive or active matrix drive and achieves the purpose that the field sequential color liquid crystal display can also adopt dynamic drive, thus the service scope of the field sequential color liquid crystal display is greatly expanded. Meanwhile, the field sequential color liquid crystal display has the advantages of low cost and simple structure. The utility model can be widely used on clocks, watches, instruments and meters, entertainment machines and game machines as the display.
Description
Technical field
The utility model relates to a kind of field-sequential color liquid crystal display, especially a kind of LCDs, backlight, backlight driver and LCDs driver that has polaroid and following polaroid, described backlight is arranged at the bottom side of LCDs, and described backlight driver and LCDs driver drive the colour liquid crystal display device of backlight and LCDs respectively.
Background technology
The field-sequential mode liquid crystal display is that a colour picture (frame) is divided into three pictures (field) to red (R), green (G), blue (B) in turn by the time, switches those pictures (field) then at a high speed in turn and constitutes a colour picture (frame).If adopt R, G, B three primary colours, then the time of the place demonstration is 1/3 (as shown in Figure 1) of a shown time of frame, and promptly three fields constitute a frame.If the time that each place of 2 looks or 4 looks shows just is 1/2 or 1/4 of the shown time of frame, promptly 2 fields or 4 fields constitute a frame, and all the other situations are analogized.Existing field-sequential color liquid crystal display, its general structure comprises LCDs, backlight, backlight driver and the LCDs driver that has polaroid and following polaroid, described backlight is arranged at the bottom side of LCDs, and described backlight driver and LCDs driver drive backlight and LCDs respectively.The field-sequential color liquid crystal display great advantage is with low cost, and is simple in structure.What field-sequential color liquid crystal display in the market all adopted is that passive actuator or active demultiplexing matrix drive, and in static drive, the demonstration of literal and figure, image all will increase the driving circuit of necessary number arbitrarily, unrealistic on cost, and, under at present to the more and more littler situation of the area requirements of the driver IC in the LCD, driver IC can not carry the input and output pin of unlimited static drive, so this has also limited the application of static drive in field-sequential color liquid crystal display.And driven with active matrix need adopt semiconductor elements such as TFT, and its cost is higher.It is open that Chinese patent literature finds to have the document of field-sequential color liquid crystal display of dynamic driver (passive demultiplexing matrix, down with) as yet by retrieval.Be badly in need of a kind of order color liquid crystal display that has the dynamic driving field device in the market.
Summary of the invention
The utility model purpose provides a kind of field-sequential color liquid crystal display that can dynamic driving.
The utility model can be realized by following technical scheme: design a kind of field-sequential color liquid crystal display, comprise the LCDs, backlight, backlight driver and the LCDs driver that have polaroid and following polaroid, described backlight is arranged at a side of LCDs, described backlight driver and LCDs driver drive backlight and LCDs respectively, described LCDs is high-speed response and LCDs high steepness, and described LCDs driver is a dynamic driver.
Described backlight driver and LCDs driver are incorporated in the IC module, more conserve space.
The output pulse width of described backlight driver is controlled.
Described backlight is made up of the light source of two or more different color.
As to improvement of the present utility model, the output pulse width of the part light source in the described backlight is smaller or equal to the demonstration time of a two field picture.
The actual required voltage of the output voltage of described backlight driver control signal and described light source is consistent.
As to further improvement of the utility model, the angle of the orthogonal projection of the described absorption optical axis of going up polaroid and following polaroid is between 70 ° to 110 °.
The actual distortion angle of the liquid crystal material in the described LCDs is between 85 ° to 275 °.
Described dynamic driver is 1/2,1/3,1/4 or 1/8 dutycycle.
When backlight was closed, described liquid crystal display according to the number of times of liquid crystal shutter, can be controlled the gray scale of liquid crystal display in a frame.
The utility model has overcome for a long time, field-sequential color liquid crystal display can only be with the problem of static drive or driven with active matrix, realized that field-sequential color liquid crystal display also can use dynamic driving, like this, expanded the field-sequential color liquid crystal display usable range greatly.Simultaneously, also kept field-sequential color liquid crystal display with low cost, advantage of simple structure.The utility model extensively is fit to use as display on clock, table, instrument and meter, recreational machine and the game machine.
Description of drawings
Fig. 1 is the synoptic diagram that concerns between existing frame and the field.
Fig. 2 is a kind of example structure synoptic diagram of the utility model.
Fig. 3 is a control circuit frame structure synoptic diagram of the present utility model.
Fig. 4 is the inner structure block diagram of the IC module among Fig. 3.
Fig. 5 is the synoptic diagram that concerns between controlled frame of the utility model and the field.
Fig. 6 is the synoptic diagram that concerns between another kind of frame of the utility model and the field.
Embodiment
See also Fig. 2 and Fig. 3, Fig. 2 is a kind of example structure synoptic diagram of the utility model.It is a kind of field-sequential color liquid crystal display, comprise polaroid 11, upper substrate 12, last transparency electrode 13, liquid crystal material 14, following transparency electrode 15, infrabasal plate 16 and following polaroid 17, the described polaroid 11 of going up, upper substrate 12, last transparency electrode 13, liquid crystal material 14 with high steepness and high-speed response speed, following transparency electrode 15, superpose the successively LCDs 1 of high-speed response of the high steepness of formation of infrabasal plate 16 and following polaroid 17, be provided with light guide plate 2 at described LCDs 1 downside, downside in described light guide plate 2 is provided with backlight 3, it is red that backlight in the utility model adopts, green and blue led, backlight driver and LCDs driver are incorporated in the IC module 42 (Fig. 3), conserve space so, more.Backlight driver output in the IC module 42 is red, green and the blue LED that is used for driving the corresponding look of backlight, and the LCDs driver in the IC module 42 is a dynamic driver, can select (the SANTECH DISPLAY CO. of display Co., Ltd. of Japanese match section for use with employed liquid crystal material in the LCDs that dynamic driver matches, LTD) model that provides is the liquid crystal material of SD1888, this liquid crystal material has high steepness and high-speed response character, and dynamic driver adds that the LCDs of the high-speed response of high steepness constitutes the dynamic driving of the field-sequential color liquid crystal display of dynamic driving.The angle of the orthogonal projection of the absorption optical axis of described upward polaroid 11 and following polaroid 17 is preferably between 70 ° to 110 °; The actual distortion angle of the liquid crystal material 14 in the described LCDs is between 85 ° to 275 °; So, can further improve contrast of the present utility model and steepness.Described dynamic driver can be designed as 1/2,1/3,1/4 or 1/8 dutycycle.Carry the control signal of coming referring to Fig. 3 from client CPU41, enter IC module 42, control backlight 3 and LCDs 1 then.
See also Fig. 4, Fig. 4 is the inner structure block diagram of the IC module 42 among Fig. 3.It comprises data working storage 421, demoder 422, dynamic driver 423, time schedule controller 424 and backlight driver 425, the data-signal of coming from client CPU 41 enters data working storage 421, after demoder 422 decodings, go into dynamic driver 423, and then drive LCDs 1; The control signal of coming from client CPU 41 enters time schedule controller 424 and data working storage 421, time schedule controller 424 control backlight driver 425, and then 3 work of control backlight.This IC module 42 provides power supply by client CPU 41.
In order further to improve performance of the present utility model, describedly be subjected to client CPU 41 programmed control in IC module 42, can allow the output pulse width of the backlight driver 425 in the IC module 42 become controlled, as shown in Figure 5, can allow ruddiness account for half of a frame time, strengthening redness, and other two kinds of color each points 1/4.Certainly, also other displaying ratio of each color of scalable as required.Show any color, how long show that all may command device 41 is controlled according to pre-designed program.The output pulse width of the part light source in the described backlight 3 (as a certain in the red, green and blue or certain two kinds of look) is smaller or equal to the demonstration time of a two field picture.Emphasize a certain color, slower as the response speed of red LED, brightness is lower, in order to strengthen redness, can be arranged on the output pulse width of redness greater than 1/2 to the demonstration time that equals a two field picture, sees also Fig. 5.
Be that example is illustrated the utility model more than with the red, green and blue three primary colours.Obviously, described backlight also can be designed to be made up of two or more the light source of different color.
In the utility model, the required voltage of the output voltage of backlight driver 425 control signals in the described IC module 42 and described light source reality is consistent.That is to say integrated amplifying circuit and mu balanced circuit in IC module 42, consistent with the voltage that the output voltage that guarantees the backlight driver control signal and described light source reality are required, like this, can avoid under the situation that cell voltage descends, what the LED of certain color was too early quits work, driving voltage as 3.3 volts of blue-ray LED needs, the driving voltage that is higher than ruddiness, as the output voltage of not taking the backlight driver control signal with as described in the actual required consistent control of voltage of light source, blue-ray LED might extinguish too early.
The utility model also can be designed to when described backlight 3 is closed, when described backlight is closed, described liquid crystal display field in a frame according to the number of times of liquid crystal shutter, can control the gray scale (see figure 6) of liquid crystal display, promptly can become black and white or the LCD of gray scale is arranged, when liquid crystal shutter one time, be black and white; When twice of liquid crystal shutter or twice are above, present gray scale in various degree.Can reduce power consumption like this, when using on clock as the utility model, when backlight 3 is closed, it can switch to white-black pattern with color mode automatically, that is to say, this practicality is new when external power supply, can be color mode, and the cut-out external power supply changes when battery-powered, then becomes white-black pattern.
Claims (8)
1, a kind of field-sequential color liquid crystal display, comprise the LCDs, backlight, backlight driver and the LCDs driver that have polaroid and following polaroid, described backlight is arranged at a side of LCDs, described backlight driver and LCDs driver drive backlight and LCDs respectively, it is characterized in that, described LCDs is high-speed response and LCDs high steepness, and described LCDs driver is a dynamic driver.
2, field-sequential color liquid crystal display according to claim 1 is characterized in that, described backlight driver and LCDs driver are incorporated in the IC module.
3, field-sequential color liquid crystal display according to claim 1 and 2 is characterized in that, described backlight is made up of the light source of two or more different color.
4, field-sequential color liquid crystal display according to claim 3 is characterized in that, the output pulse width of the part light source in the described backlight is smaller or equal to the demonstration time of a two field picture.
5, field-sequential color liquid crystal display according to claim 4 is characterized in that, the actual required voltage of the output voltage of described backlight driver control signal and described light source is consistent.
6, field-sequential color liquid crystal display according to claim 5 is characterized in that, the angle of the orthogonal projection of the absorption optical axis of described upward polaroid and following polaroid is between 70 ° to 110 °.
7, field-sequential color liquid crystal display according to claim 1 is characterized in that, the actual distortion angle of the liquid crystal material in the described LCDs is between 85 ° to 275 °.
8, field-sequential color liquid crystal display according to claim 1 and 2 is characterized in that, described dynamic driver is 1/2,1/3,1/4 or 1/8 dutycycle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202120313U CN201278068Y (en) | 2008-09-18 | 2008-09-18 | Field sequential color liquid crystal display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202120313U CN201278068Y (en) | 2008-09-18 | 2008-09-18 | Field sequential color liquid crystal display |
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| Publication Number | Publication Date |
|---|---|
| CN201278068Y true CN201278068Y (en) | 2009-07-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNU2008202120313U Expired - Fee Related CN201278068Y (en) | 2008-09-18 | 2008-09-18 | Field sequential color liquid crystal display |
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| CN (1) | CN201278068Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101989409A (en) * | 2009-07-31 | 2011-03-23 | 陈国平 | Drive method of dynamic drive field sequential color liquid crystal display |
| TWI425488B (en) * | 2009-11-03 | 2014-02-01 | Nuvoton Technology Corp | Driver of field sequential display and driving mehtod thereof |
| CN108335674A (en) * | 2013-02-04 | 2018-07-27 | 索尼半导体解决方案公司 | Display device |
| CN110246463A (en) * | 2019-05-31 | 2019-09-17 | 重庆捷尔士显示技术有限公司 | Colored segment encode liquid crystal display |
-
2008
- 2008-09-18 CN CNU2008202120313U patent/CN201278068Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101989409A (en) * | 2009-07-31 | 2011-03-23 | 陈国平 | Drive method of dynamic drive field sequential color liquid crystal display |
| TWI425488B (en) * | 2009-11-03 | 2014-02-01 | Nuvoton Technology Corp | Driver of field sequential display and driving mehtod thereof |
| US8643683B2 (en) | 2009-11-03 | 2014-02-04 | Nuvoton Technolgoy Corporation | Driver of field sequential display capable of switching current and voltage of scan signal and display signal and driving method thereof |
| CN108335674A (en) * | 2013-02-04 | 2018-07-27 | 索尼半导体解决方案公司 | Display device |
| CN110246463A (en) * | 2019-05-31 | 2019-09-17 | 重庆捷尔士显示技术有限公司 | Colored segment encode liquid crystal display |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHENZHEN KALE DISPLAY TECHNOLOGY CO., LTD. Effective date: 20120503 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20120503 Address after: 518000 A, Fortune Plaza, Shennan Road, Shennan Road, Guangdong, Shenzhen, Futian District, 7LM Patentee after: Shenzhen music display technology Co., Ltd. Address before: 518000, 22E, A, Fortune Plaza, 7060 Shennan Road, Shenzhen, Guangdong, Futian District Patentee before: Chen Guoping |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090722 Termination date: 20140918 |
|
| EXPY | Termination of patent right or utility model |