CN102262860A - Liquid crystal display and backlight driving device thereof - Google Patents
Liquid crystal display and backlight driving device thereof Download PDFInfo
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- CN102262860A CN102262860A CN2011101577277A CN201110157727A CN102262860A CN 102262860 A CN102262860 A CN 102262860A CN 2011101577277 A CN2011101577277 A CN 2011101577277A CN 201110157727 A CN201110157727 A CN 201110157727A CN 102262860 A CN102262860 A CN 102262860A
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Abstract
The invention belongs to the field of liquid crystal technology and provides a liquid crystal display and a backlight driving device thereof. The backlight driving device comprises a backlight driving unit, a control unit, a panel driving unit and a reverse unit, wherein the control unit is used for outputting second pulse width signals used for adjusting the brightness of a backlight circuit, the panel driving unit is used for outputting first pulse width signals according to different colors of pictures to be displayed by the liquid crystal display, and the reverse unit is used for superposing the first pulse width signals and the second pulse width signals and outputting third pulse width signals for controlling the working condition of the backlight driving unit. According to the invention, since the third pulse width signals obtained through the superposition of the reverse unit are used for controlling the working condition of the backlight driving unit, and the low-level duration of the third pulse width signals is definitely larger than the low-level duration of the second pulse width signals, that is to say, the non-operating time of the backlight driving unit is longer than that of a backlight driving chip in the prior art, therefore, the purpose of saving electricity can be achieved further on the basis of the prior art.
Description
Technical field
The invention belongs to the liquid crystal technology field, relate in particular to a kind of LCD and backlight drive device thereof.
Background technology
Film liquid crystal display is that (Thin Film Transistor Liquid Crystal Display, TFT-LCD) a kind of as LCD uses thin-film transistor technologies to improve the video quality.It specifically comprises the backlight drive device of film display panels, the panel drive circuit that connects the film display panels, backlight circuit, connection backlight circuit, adopting LED as Fig. 1 with backlight circuit is example as backlight, shows the circuit of the backlight drive device that prior art provides.This backlight drive device comprises a backlight driving chip, when the film LCDs is in battery saving mode according to user's trigger pip, panel drive circuit sends the signal feedback pin FB that a PWM power save signal is given this backlight driving chip according to the difference of the color of film LCDs picture to be shown (as: show black or the picture that is faint in color etc.), this backlight driving chip receives the pwm control signal of the adjusting backlight circuit brightness that little process chip sends simultaneously by its enable pin EN, and by the negative pole of signal feedback pin FB to backlight circuit, it is the negative electrode pin VLED-output voltages having different magnitude signal of LED, thereby the luminosity of control LED, and then reach purpose of energy saving.
Yet, in the backlight drive device of the film liquid crystal display that prior art provides, whether its backlight driving chip only decides it to work by the pwm control signal of regulating backlight circuit brightness under energy-saving mode, when this pwm control signal is between low period, this backlight driving chip is in idle state, and power savings is limited.
Summary of the invention
The purpose of the embodiment of the invention is to provide a kind of backlight liquid crystal display drive unit, be intended to solve in the backlight liquid crystal display drive unit that prior art provides, whether backlight driving chip only decides it to work by the pwm control signal of regulating backlight circuit brightness under energy-saving mode, the problem that power savings is limited.
The embodiment of the invention is achieved in that a kind of backlight liquid crystal display drive unit, and described device comprises:
Drive the luminous backlight driving unit of backlight circuit, described backlight driving unit is in off position between the low period of pulse signal;
Control module is used to export in order to regulate second pulse width signal of described backlight circuit brightness;
The panel driving unit, be used for when LCD is in battery saving mode, difference according to the color of LCD picture to be shown is exported first pulse width signal, and a low duration of described first pulse width signal is greater than the high level lasting time of described second pulse width signal in the corresponding time;
Reverse unit, be used for described second pulse width signal of described control module output and described first pulse width signal of described panel driving unit output are superposeed, and the described backlight driving unit work of output control whether the 3rd pulse width signal.
Another object of the present invention is to provide a kind of LCD, comprise a display panels, backlight circuit, and a backlight liquid crystal display drive unit, described device comprises:
Drive the luminous backlight driving unit of backlight circuit, described backlight driving unit is in off position between the low period of pulse signal;
Control module is used to export in order to regulate second pulse width signal of described backlight circuit brightness;
The panel driving unit that connects described display panels, be used for when LCD is in battery saving mode, difference according to the color of LCD picture to be shown is exported first pulse width signal, and a low duration of described first pulse width signal is greater than the high level lasting time of described second pulse width signal in the corresponding time;
Reverse unit, be used for described second pulse width signal of described control module output and described first pulse width signal of described panel driving unit output are superposeed, and the described backlight driving unit work of output control whether the 3rd pulse width signal.
Because backlight liquid crystal display drive unit provided by the invention utilizes a reverse unit, first pulse width signal of panel driving unit output and second pulse width signal in order to regulate backlight circuit brightness of control module output are superposeed, and the work that utilizes the 3rd pulse width signal control backlight driving unit that stack obtains whether, make backlight driving unit between the low period of the 3rd pulse width signal, quit work, and since a low duration of first pulse width signal greater than the high level lasting time of second pulse width signal in this time, make that the low level time of the 3rd pulse width signal must be greater than the low duration of second pulse width signal, that is to say, the time that backlight driving unit is in off position must be longer than the down time of backlight driving chip in the prior art, thereby further reached on the basis of existing technology, the purpose of economize on electricity.
Description of drawings
Fig. 1 is the circuit diagram of the backlight liquid crystal display drive unit that provides of prior art;
Fig. 2 is the schematic diagram of backlight liquid crystal display drive unit provided by the invention;
Fig. 3 is the circuit diagram of Fig. 2;
Fig. 4 is among the present invention, the oscillogram of first pulse width signal, second pulse width signal and the 3rd pulse width signal.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
Backlight liquid crystal display drive unit provided by the invention utilizes a reverse unit, first pulse width signal of panel driving unit output and second pulse width signal in order to regulate backlight circuit brightness of control module output are superposeed, and the work that utilizes the 3rd pulse width signal control backlight driving unit that stack obtains whether.
Show the principle of backlight liquid crystal display drive unit provided by the invention as Fig. 2, for convenience of explanation, only show part related to the present invention.Among the present invention, LCD is preferably film liquid crystal display.
Backlight liquid crystal display drive unit provided by the invention comprises: drive the luminous backlight driving unit 14 of backlight circuit, backlight driving unit 14 is in off position between the low period of pulse signal; Control module 11 is used to export in order to regulate second pulse width signal of backlight circuit brightness; Panel driving unit 12, be used for when LCD is in battery saving mode, difference according to the color of LCD picture to be shown is exported first pulse width signal, and a low duration of this first pulse width signal is greater than the high level lasting time of second pulse width signal in this time; Oppositely unit 13 be used for second pulse width signal of control module 11 outputs and first pulse width signal of panel driving unit 12 outputs are superposeed, and the 3rd pulse width signal whether backlight driving unit 14 works is controlled in output.
Because backlight liquid crystal display drive unit provided by the invention utilizes a reverse unit 13, first pulse width signal of panel driving unit output and second pulse width signal in order to regulate backlight circuit brightness of control module output are superposeed, and the work that utilizes the 3rd pulse width signal control backlight driving unit 14 that stack obtains whether, make backlight driving unit 14 between the low period of the 3rd pulse width signal, quit work, and since a low duration of first pulse width signal greater than the high level lasting time of second pulse width signal in this time, make that the low level time of the 3rd pulse width signal must be greater than the low duration of second pulse width signal, that is to say, the time that backlight driving unit 14 is in off position must be longer than the down time of backlight driving chip in the prior art, thereby further reached on the basis of existing technology, the purpose of economize on electricity.
Show the circuit of Fig. 2 as Fig. 3.
Wherein, oppositely unit 13 comprises: triode Q1, triode Q2, resistance R 4, resistance R 5, resistance R 6, resistance R 7 and resistance R 8.The base stage of triode Q1 connects control module 11 by resistance R 4, the collector of triode Q1 connects the 3.3V direct current by resistance R 5, the grounded emitter of triode Q1, the collector of triode Q1 connects the base stage of triode Q2 simultaneously by resistance R 6, the collector of triode Q2 connects panel driver element 12 by resistance R 7, the grounded emitter of triode Q2, the collector of triode Q2 connects backlight driving unit 14 by resistance R 8.
Wherein, backlight driving unit 14 comprises: a backlight driving chip U1, resistance R 2, resistance R 3, capacitor C 1, capacitor C 2, diode D1 and inductance L 1.The switch output pin SW of backlight driving chip U1 connects the 5V direct current by inductance L 1; The grounding pin GND ground connection of backlight driving chip U1; Backlight driving chip U1 feedback pin FB in turn by resistance R 2 and resistance R 3 ground connection, an end that is connected with resistance R 3 of resistance R 2 connects the negative pole of backlight circuit, when this backlight circuit was backlight with LED, an end that is connected with resistance R 3 of resistance R 2 connected the negative electrode of LED; The input power pins IN of backlight driving chip U1 connects the 5V direct current, and the input power pins IN of backlight driving chip U1 is simultaneously by capacitor C 2 ground connection; The overvoltage protection pin OV of backlight driving chip U1 connects the positive pole of backlight circuit, when this backlight circuit is backlight with LED, the overvoltage protection pin OV of backlight driving chip U1 connects the anode of LED, the overvoltage protection pin OV of backlight driving chip U1 connects the negative electrode of diode D1 simultaneously, the anode of diode D1 connects switch output pin SW, and the overvoltage protection pin OV of backlight driving chip U1 is simultaneously by capacitor C 1 ground connection; The enable pin EN of backlight driving chip U1 connects reverse unit 13, specifically is the collector that connects triode Q2 by resistance R 8.
The principle of work of circuit shown in Figure 3 is described in detail in detail below:
Second pulse width signal of control module 11 outputs is exported through twice reverse back of triode Q1 and triode Q2 in turn; When LCD is in battery saving mode, difference along with the color of LCD picture to be shown, the dutycycle difference of first pulse width signal of panel driving unit 12 outputs, after first pulse width signal and the stack of second pulse width signal, obtain the 3rd pulse width signal, as shown in Figure 4.As can be seen, when second pulse width signal and first pulse width signal have one to be in low level to each other, another signal will be drawn as low level, from the 3rd pulse width signal oscillogram as can be seen, in the time shown in the dotted line, second pulse width signal has been stolen three high level, and that the enable pin EN of backlight driving chip is a high level is effective, that is to say, in the time shown in the dotted line, the enable pin EN of backlight driving chip is made backlight driving chip and backlight all be in idle state, thereby has reached purpose of power saving by continuous input low level.Empirical tests, under the identical situation of economize on electricity display brightness, when the circuit of using backlight liquid crystal display drive unit shown in Figure 1, make when backlight current is 90MA, use the circuit of backlight liquid crystal display drive unit shown in Figure 3, can make that backlight current is reduced to 48MA, power savings is obvious.
In addition, in the prior art, as shown in Figure 1, the PWM power save signal has been introduced into the negative electrode pin VLED-of LED by electrical connection, bring noise jamming to display panels easily, cause display frame to occur flashing or the ripples line, and backlight liquid crystal display drive unit provided by the invention has been avoided the negative pole of first pulse width signal and backlight circuit, as: the electrical connection of the negative electrode pin VLED-of LED etc., thereby on the basis of economize on electricity, also can reduce the noise that display panels is subjected to.
The present invention also provides a kind of LCD, comprise a display panels, backlight circuit, and as mentioned above a backlight liquid crystal display drive unit, in this device, panel driving unit 12 connects this display panels, and the composition of all the other each several parts, annexation and function do not repeat them here as mentioned above.
Preferably, among the present invention, LCD is a film liquid crystal display.
Because backlight liquid crystal display drive unit provided by the invention utilizes a reverse unit 13, first pulse width signal of panel driving unit output and second pulse width signal in order to regulate backlight circuit brightness of control module output are superposeed, and the work that utilizes the 3rd pulse width signal control backlight driving unit 14 that stack obtains whether, make backlight driving unit 14 between the low period of the 3rd pulse width signal, quit work, and since a low duration of first pulse width signal greater than the high level lasting time of second pulse width signal in this time, make that the low level time of the 3rd pulse width signal must be greater than the low duration of second pulse width signal, that is to say, the time that backlight driving unit 14 is in off position must be longer than the down time of backlight driving chip in the prior art, thereby further reached on the basis of existing technology, the purpose of economize on electricity.
The above only is preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of being done within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. a backlight liquid crystal display drive unit is characterized in that, described device comprises:
Drive the luminous backlight driving unit of backlight circuit, described backlight driving unit is in off position between the low period of pulse signal;
Control module is used to export in order to regulate second pulse width signal of described backlight circuit brightness;
The panel driving unit, be used for when LCD is in battery saving mode, difference according to the color of LCD picture to be shown is exported first pulse width signal, and a low duration of described first pulse width signal is greater than the high level lasting time of described second pulse width signal in the corresponding time;
Reverse unit, be used for described second pulse width signal of described control module output and described first pulse width signal of described panel driving unit output are superposeed, and the described backlight driving unit work of output control whether the 3rd pulse width signal.
2. backlight liquid crystal display drive unit as claimed in claim 1 is characterized in that, described reverse unit comprises: triode Q1, triode Q2, resistance R 4, resistance R 5, resistance R 6, resistance R 7 and resistance R 8;
The base stage of triode Q1 connects described control module by resistance R 4, the collector of triode Q1 connects the 3.3V direct current by resistance R 5, the grounded emitter of triode Q1, the collector of triode Q1 connects the base stage of triode Q2 simultaneously by resistance R 6, the collector of triode Q2 connects described panel driving unit by resistance R 7, the grounded emitter of triode Q2, the collector of triode Q2 connects described backlight driving unit by resistance R 8.
3. backlight liquid crystal display drive unit as claimed in claim 2 is characterized in that, described backlight driving unit comprises: a backlight driving chip, resistance R 2, resistance R 3, capacitor C 1, capacitor C 2, diode D1 and inductance L 1;
The switch output pin SW of described backlight driving chip connects the 5V direct current by inductance L 1; Described backlight driving chip feedback pin FB in turn by resistance R 2 and resistance R 3 ground connection, an end that is connected with resistance R 3 of resistance R 2 connects the negative pole of described backlight circuit; The input power pins IN of described backlight driving chip connects the 5V direct current, and the input power pins IN of described backlight driving chip is simultaneously by capacitor C 2 ground connection; The overvoltage protection pin OV of described backlight driving chip connects the positive pole of described backlight circuit, the overvoltage protection pin OV of described backlight driving chip connects the negative electrode of diode D1 simultaneously, the anode of diode D1 connects switch output pin SW, and the overvoltage protection pin OV of described backlight driving chip is simultaneously by capacitor C 1 ground connection; The enable pin of described backlight driving chip connects the collector that connects triode Q2 by resistance R 8.
4. as each described backlight liquid crystal display drive unit of claim 1 to 3, it is characterized in that described LCD is a film liquid crystal display.
5. a LCD comprises a display panels, and backlight circuit, and a backlight liquid crystal display drive unit is characterized in that described device comprises:
Drive the luminous backlight driving unit of backlight circuit, described backlight driving unit is in off position between the low period of pulse signal;
Control module is used to export in order to regulate second pulse width signal of described backlight circuit brightness;
The panel driving unit that connects described display panels, be used for when LCD is in battery saving mode, difference according to the color of LCD picture to be shown is exported first pulse width signal, and a low duration of described first pulse width signal is greater than the high level lasting time of described second pulse width signal in the corresponding time;
Reverse unit, be used for described second pulse width signal of described control module output and described first pulse width signal of described panel driving unit output are superposeed, and the described backlight driving unit work of output control whether the 3rd pulse width signal.
6. LCD as claimed in claim 5 is characterized in that, described reverse unit comprises: triode Q1, triode Q2, resistance R 4, resistance R 5, resistance R 6, resistance R 7 and resistance R 8;
The base stage of triode Q1 connects described control module by resistance R 4, the collector of triode Q1 connects the 3.3V direct current by resistance R 5, the grounded emitter of triode Q1, the collector of triode Q1 connects the base stage of triode Q2 simultaneously by resistance R 6, the collector of triode Q2 connects described panel driving unit by resistance R 7, the grounded emitter of triode Q2, the collector of triode Q2 connects described backlight driving unit by resistance R 8.
7. LCD as claimed in claim 6 is characterized in that, described backlight driving unit comprises: a backlight driving chip, resistance R 2, resistance R 3, capacitor C 1, capacitor C 2, diode D1 and inductance L 1;
The switch output pin SW of described backlight driving chip connects the 5V direct current by inductance L 1; Described backlight driving chip feedback pin FB in turn by resistance R 2 and resistance R 3 ground connection, an end that is connected with resistance R 3 of resistance R 2 connects the negative pole of described backlight circuit; The input power pins IN of described backlight driving chip connects the 5V direct current, and the input power pins IN of described backlight driving chip is simultaneously by capacitor C 2 ground connection; The overvoltage protection pin OV of described backlight driving chip connects the positive pole of described backlight circuit, the overvoltage protection pin OV of described backlight driving chip connects the negative electrode of diode D1 simultaneously, the anode of diode D1 connects switch output pin SW, and the overvoltage protection pin OV of described backlight driving chip is simultaneously by capacitor C 1 ground connection; The enable pin of described backlight driving chip connects the collector that connects triode Q2 by resistance R 8.
8. as each described LCD of claim 5 to 7, it is characterized in that described LCD is a film liquid crystal display.
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| CN2011101577277A CN102262860A (en) | 2011-06-13 | 2011-06-13 | Liquid crystal display and backlight driving device thereof |
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| CN2011101577277A CN102262860A (en) | 2011-06-13 | 2011-06-13 | Liquid crystal display and backlight driving device thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105390097A (en) * | 2015-12-01 | 2016-03-09 | 深圳市金立通信设备有限公司 | Backlight drive circuit and display screen |
| WO2017152463A1 (en) * | 2016-03-08 | 2017-09-14 | 深圳市华星光电技术有限公司 | Backlight dimming circuit and liquid crystal display |
| CN107481679A (en) * | 2017-09-22 | 2017-12-15 | 合肥惠科金扬科技有限公司 | A kind of double backlight control circuits of LED and double backlight LED matrixs |
| WO2023193606A1 (en) * | 2022-04-08 | 2023-10-12 | 北京字跳网络技术有限公司 | Backlight brightness adjustment circuit and control method therefor, and device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101389177A (en) * | 2007-09-14 | 2009-03-18 | 群康科技(深圳)有限公司 | Light regulating circuit |
| CN201550321U (en) * | 2009-09-28 | 2010-08-11 | 康佳集团股份有限公司 | LED driving control device |
| CN102074214A (en) * | 2010-12-23 | 2011-05-25 | 上海大学 | Monolithic integrated LED (light emitting diode) backlight and LCD (liquid crystal display) power supply driving system |
-
2011
- 2011-06-13 CN CN2011101577277A patent/CN102262860A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101389177A (en) * | 2007-09-14 | 2009-03-18 | 群康科技(深圳)有限公司 | Light regulating circuit |
| CN201550321U (en) * | 2009-09-28 | 2010-08-11 | 康佳集团股份有限公司 | LED driving control device |
| CN102074214A (en) * | 2010-12-23 | 2011-05-25 | 上海大学 | Monolithic integrated LED (light emitting diode) backlight and LCD (liquid crystal display) power supply driving system |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105390097A (en) * | 2015-12-01 | 2016-03-09 | 深圳市金立通信设备有限公司 | Backlight drive circuit and display screen |
| WO2017152463A1 (en) * | 2016-03-08 | 2017-09-14 | 深圳市华星光电技术有限公司 | Backlight dimming circuit and liquid crystal display |
| CN107481679A (en) * | 2017-09-22 | 2017-12-15 | 合肥惠科金扬科技有限公司 | A kind of double backlight control circuits of LED and double backlight LED matrixs |
| CN107481679B (en) * | 2017-09-22 | 2023-05-19 | 合肥惠科金扬科技有限公司 | LED double-backlight control circuit and double-backlight LED device |
| WO2023193606A1 (en) * | 2022-04-08 | 2023-10-12 | 北京字跳网络技术有限公司 | Backlight brightness adjustment circuit and control method therefor, and device |
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Application publication date: 20111130 |