CN202126826U - Low-power-consumption drive circuit for high-definition liquid crystal display (LCD) - Google Patents
Low-power-consumption drive circuit for high-definition liquid crystal display (LCD) Download PDFInfo
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- CN202126826U CN202126826U CN2011201903958U CN201120190395U CN202126826U CN 202126826 U CN202126826 U CN 202126826U CN 2011201903958 U CN2011201903958 U CN 2011201903958U CN 201120190395 U CN201120190395 U CN 201120190395U CN 202126826 U CN202126826 U CN 202126826U
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Abstract
The utility model relates to a low-power-consumption drive circuit for a high-definition liquid crystal display (LCD). The low-power-consumption drive circuit comprises an analog video input circuit, an analog audio input circuit, a microprocessor, a low-voltage differential output circuit and a power management circuit, wherein the analog video input circuit is used for inputting analog video signals; the analog audio input circuit is used for inputting analog audio signals; the microprocessor is used for processing the analog video signals and the analog audio signals; the low-voltage differential output circuit is used for outputting the signals processed by the microprocessor; and the power management circuit is used for supplying power for the microprocessor and the low-voltage differential output circuit. In the utility model, a power chip which can reduce the power consumption of the circuits is adopted in the power management circuit; by adopting the chip with higher integration level, the number of peripheral elements is reduced, and the constitution and distribution of the elements are reasonable, therefore, the overall reliability and safety of the circuits are greatly improved, the performance of the display is improved, the structures of the circuits are simplified, and the cost is reduced.
Description
Technical field
The utility model relates to the display driver field, more particularly, relates to a kind of low-power consumption high-definition liquid crystal circuit of display driving.
Background technology
Because the digital content services of high-quality high definition is fast-developing, can reduce, show that high definition LCD visual and also original sound has received user's popular welcome and liked that the LCD of band digital high-definition will be the leader in following demonstration field.
Present LCD is used for the Drive and Control Circuit structure more complicated that digital signal sound and image reduction and image show, cost is higher, can't satisfy the demand of market to display sizes and displaying ratio simultaneously.In addition; Existing display bandwidth is narrow; The speed of LCD response is slow, and signal distortion rate is high, and resolving power is relatively poor; The user makes the color range and the bandwidth problem that how to solve LCDs become current major issue to the high request of image tonescale and the attention of LCD resolving power in addition.
The utility model content
The technical matters that the utility model will solve is; To prior liquid crystal display control circuit complex structure, cost is higher and can not well solve the color range of LCDs and the defective of bandwidth problem, and a kind of low-power consumption high-definition liquid crystal circuit of display driving is provided.
The utility model solves the technical scheme that its technical matters adopted: construct a kind of low-power consumption high-definition liquid crystal circuit of display driving, comprising the analog video input circuit that is used for input analog video signal; Be used to import the analogue audio frequency input circuit of simulated audio signal; Be used for microprocessor that said analog video signal and said simulated audio signal are handled; Be used to export the low-voltage differential output circuit of the signal after the said microprocessor processes; And be used for electric power management circuit that said microprocessor and said low-voltage differential output circuit are supplied power; Said analog video input circuit, said analogue audio frequency input circuit and said low-voltage differential output circuit are connected with said microprocessor respectively; Said low-voltage differential output circuit and said microprocessor are connected with said electric power management circuit respectively.
In the described low-power consumption high-definition liquid crystal of the utility model circuit of display driving; Said electric power management circuit comprises DC supply socket, the first step-down chip, the second step-down chip, the 3rd step-down chip and power supply chip; Direct supply is connected to said microprocessor and said storer through said DC supply socket, the said first step-down chip, the said second step-down chip and said power supply chip successively; Direct supply is connected to said low-voltage differential output circuit through said DC supply socket, the said first step-down chip, said the 3rd step-down chip and said power supply chip successively, and said direct supply is connected to the display backlight power supply through said DC supply socket.
In the described low-power consumption high-definition liquid crystal of the utility model circuit of display driving, said analog video input circuit comprises the VGA connector, and analog video signal is input to said microprocessor through said VGA connector.
In the described low-power consumption high-definition liquid crystal of the utility model circuit of display driving, said analogue audio frequency input circuit comprises audio input interface, and simulated audio signal is input to said microprocessor through said audio input interface.
In the described low-power consumption high-definition liquid crystal of the utility model circuit of display driving, said low-voltage differential output circuit comprises single channel interface and/or binary channels interface, and said microprocessor is through said single channel interface and/or binary channels interface outputting video signal.
In the described low-power consumption high-definition liquid crystal of the utility model circuit of display driving; Said low-power consumption high-definition liquid crystal circuit of display driving also comprises the digital signal input circuit; Said digital signal input circuit comprises the HDMI connector, and digital signal is input to said microprocessor through said HDMI connector.
In the described low-power consumption high-definition liquid crystal of the utility model circuit of display driving; Said low-power consumption high-definition liquid crystal circuit of display driving also comprises and is used for audio control circuit that the sound signal of said microprocessor output is handled; Said audio control circuit comprises the note amplifier that the sound signal of said microprocessor output is carried out processing and amplifying; And the audio output interface of the audio signal output after said note amplifier handled, said audio control circuit also is connected with said electric power management circuit simultaneously.
In the described low-power consumption high-definition liquid crystal of the utility model circuit of display driving; Said low-power consumption high-definition liquid crystal circuit of display driving also comprises and is used for control display circuit that said microprocessor is provided with; Said control display circuit comprises and is used to connect the control interface of external control keyboard and is used to connect the display interface of pointing out LED; Said external control keyboard is connected with said microprocessor through said control interface; Said prompting LED is connected with said microprocessor through said display interface, and said control display circuit also is connected with said electric power management circuit simultaneously.
In the described low-power consumption high-definition liquid crystal of the utility model circuit of display driving; Said low-power consumption high-definition liquid crystal circuit of display driving also comprises the storer that memory function is provided; Said storer comprises EEPROM and/or flash memory, and said storer is connected with said microprocessor with said electric power management circuit simultaneously.
In the described low-power consumption high-definition liquid crystal of the utility model circuit of display driving, said storer is the storer of model W25X10, and said electric power management circuit comprises the chip of model AUR9701, and said microprocessor is the chip of model NT68676.
Implement the low-power consumption high-definition liquid crystal circuit of display driving of the utility model, have following beneficial effect: electric power management circuit has adopted the power supply chip that can reduce the circuit power loss, through adopting the higher chip of integrated level; Reduced peripheral cell; Element constitutes distribution rationally, has improved circuit whole reliability and security greatly, has improved the performance of display; Also simplify circuit structure, reduced cost.
Description of drawings
To combine accompanying drawing and embodiment that the utility model is described further below, in the accompanying drawing:
Fig. 1 is the structural representation of first preferred embodiment of the low-power consumption high-definition liquid crystal circuit of display driving of the utility model;
Fig. 2 is the circuit structure diagram of electric power management circuit of preferred embodiment of the low-power consumption high-definition liquid crystal circuit of display driving of the utility model;
Fig. 3 is the circuit structure diagram of analog video input circuit of preferred embodiment of the low-power consumption high-definition liquid crystal circuit of display driving of the utility model;
Fig. 4 is the circuit structure diagram of digital signal input circuit of preferred embodiment of the low-power consumption high-definition liquid crystal circuit of display driving of the utility model;
Fig. 5 is the circuit structure diagram of control display circuit of preferred embodiment of the low-power consumption high-definition liquid crystal circuit of display driving of the utility model;
Fig. 6 is the circuit structure diagram of audio control circuit of preferred embodiment of the low-power consumption high-definition liquid crystal circuit of display driving of the utility model;
Fig. 7 is the circuit structure diagram of analogue audio frequency input circuit of preferred embodiment of the low-power consumption high-definition liquid crystal circuit of display driving of the utility model;
Fig. 8 is the circuit structure diagram of low-voltage differential output circuit of preferred embodiment of the low-power consumption high-definition liquid crystal circuit of display driving of the utility model;
Fig. 9 is the microprocessor circuit structural drawing of preferred embodiment of the low-power consumption high-definition liquid crystal circuit of display driving of the utility model.
Embodiment
Below in conjunction with diagram, the preferred embodiment of the utility model is described in detail.
In the structural representation of first preferred embodiment of the low-power consumption high-definition liquid crystal circuit of display driving of the utility model shown in 1; Said low-power high-definition liquid crystal circuit of display driving comprises analog video input circuit 1, analogue audio frequency input circuit 2, microprocessor 3, low-voltage differential output circuit 4 and electric power management circuit 5; Analog video input circuit 1 is used for input analog video signal; Analogue audio frequency input circuit 2 is used to import simulated audio signal; Microprocessor 3 is used for said analog video signal and said simulated audio signal are handled; Low-voltage differential output circuit 4 is used to export the signal after said microprocessor 3 is handled, and electric power management circuit 5 is used for said microprocessor 3 and said low-voltage differential output circuit 4 are supplied power.Said analog video input circuit 1, said analogue audio frequency input circuit 2 and said low-voltage differential output circuit 4 are connected with said microprocessor 3 respectively; Said low-voltage differential output circuit 4 and said microprocessor 3 are connected with said electric power management circuit 5 respectively; Said microprocessor 3 is the integrated circuit of model NT68676; The output terminal of low-voltage differential output circuit 4 is connected to the panel of display.
As shown in Figure 9; In the microprocessor circuit synoptic diagram of the low-power consumption high-definition liquid crystal circuit of display driving of the utility model; Said microprocessor is the chip of model NT68676; This chip has the AD control signal processing capacity of 8-bit/250MHz, can make displaying appliance that clear bright display effect is arranged.Because microprocessor 3 can convert according to level and vertical scale automatically; Therefore has independently convergent-divergent processing capacity; Can handle (Widescreen Ultra Extended Graphics Array: the display mode of the different resolution super XGA of widescreen) from VGA to WUXGA; In the present embodiment, resolution can reach 2048*1152.Microprocessor 3 has GAMMA treatment for correcting function (the correcting data error mode of 10 bit widths; Be called the α verification; The algorithm structure that becomes data to correct in other words), makes the circuit of the utility model have the adjustment Show Color of 10 bit widths, carry out the GAMMA treatment for correcting through colour-difference ratio with reality output; Can the Show Color and the gray scale of display screen panel be compensated, and have adaptive noise elimination ability.In addition, the interpolation algorithm function of this microprocessor 3 can make image more level and smooth, clear.This microprocessor 3 is also supported the shake Presentation Function, therefore uses limited color just can see than the more color of real image, and in actual use; This shake shows the number that can select to increase the color that each pixel can show; And do not increase total number of pixels, so the better quality of picture, display effect is better; Can make the panel of 18-bit have the display effect that can reach, reduce cost like the 24-bit panel.
In the circuit structure diagram of the analog video input circuit 1 of the preferred embodiment of the low-power consumption high-definition liquid crystal circuit of display driving of the utility model shown in Figure 3; Said analog video input circuit 1 comprises VGA connector CN102, and analog video signal is input to said microprocessor 3 through said VGA connector CN102.The VGA connector CN102 of analog video input circuit 1 comprises 15 pins; The model of this VGA connector CN102 is PC-VGAS; Wherein 1 pin of VGA connector CN102 is connected to 34 pins of microprocessor 3; 2 pins of VGA connector CN102 are connected to 32 pins of microprocessor 3, and 3 pins of VGA connector CN102 are connected to 30 pins of microprocessor 3, and 5 pins of VGA connector CN102 are connected to 47 pins of microprocessor 3; 12 pins of VGA connector CN102 are connected to 44 pins of microprocessor 3; 13 pins of VGA connector CN102 are connected to 38 pins of microprocessor 3, and 14 pins of VGA connector CN102 are connected to 39 pins of microprocessor 3, and 15 pins of VGA connector CN102 are connected to 43 pins of microprocessor 3; Wherein 5 pins of VGA connector CN102 are the input pin, and 12 pins of VGA connector CN102 and 15 pins are DDC (the Display Data Channel: the information signal pin display data passage) of analog video signal.
Like Fig. 4,6,7, shown in 9, said analogue audio frequency input circuit 2 comprises audio input interface CN302, and simulated audio signal is input to said microprocessor 3 through said audio input interface CN302.Said low-power consumption high-definition liquid crystal circuit of display driving also comprises digital signal input circuit 6, and said digital signal input circuit 6 comprises HDMI connector CN104, and digital signal is input to said microprocessor 3 through said HDMI connector CN104.Said low-power consumption high-definition liquid crystal circuit of display driving also comprises and is used for audio control circuit 7 that the sound signal of said microprocessor 3 outputs is handled; Said audio control circuit 7 comprises the note amplifier U301 that the sound signal of said microprocessor 3 outputs is carried out processing and amplifying; And the audio output interface H301 of the audio signal output after said note amplifier U301 handled, said audio control circuit 7 also is connected with said electric power management circuit 5 simultaneously.
The audio treatment part branch of the low-power consumption high-definition liquid crystal circuit of display driving of the utility model comprises analogue audio frequency input circuit 2, digital signal input circuit 6, audio control circuit 7 and loudspeaker; Microprocessor 3 obtains sound signal through analogue audio frequency input circuit 2, handles the back through audio control circuit 7 and through audio output interface H301 sound signal is sent to loudspeaker.Particularly, the model of this note amplifier U301 is EUA6019, and the model of audio output interface H301 is PH2-4.Simulated audio signal is imported from audio input interface CN302; The audio frequency of digital high-definition signal is imported by HDMI connector CN104; 2 tunnel sound signals are input to microprocessor 3; Output to the note amplifier U301 of audio control circuit 7 after treatment, connect audio output interface H301 through note amplifier U301.15 pins of note amplifier U301 connect 73 pins of microprocessor 3; 21 pins of note amplifier U301 connect 51 pins of microprocessor 3; 8 pins of note amplifier U301 connect 62 pins of microprocessor 3; 6 pins of note amplifier U301 connect 61 pins of microprocessor 3, and the 2nd, 24,12,14 pins of note amplifier U301 connect audio output interface H301.In the present embodiment, output audio signal is that binary channels is stereo, and sound signal is divided into left and right sound channels from the input of note amplifier U301 the 6th, 8 pin, and after amplifying through note amplifier U301, H301 outputs to loudspeaker from audio output interface.Microprocessor 3 is regulated the volume of sound signal and quiet through 15,21 pin of control audio amplifier U301.
The HDMI connector CN104 of digital signal input circuit 6 comprises 32 signal input tube pin; The model of this HDMI connector CN104 is 500254-1941; Wherein the 1st of HDMI connector CN104 the, 3,4,6,7,9,10,12 pins connect the 18th, 17,13,12,8,7,3,2 pins of microprocessor 3 respectively; The 13rd, 19 pin of HDMI connector CN104 connect the 107th, 120 pin of microprocessor 3 respectively, do the HDMI signal and connect control usefulness.
In the circuit structure diagram of the low-voltage differential output circuit 4 of the preferred embodiment of the low-power consumption high-definition liquid crystal circuit of display driving of the utility model shown in Figure 8; Said low-voltage differential output circuit 4 comprises single channel interface CN101A and/or binary channels interface H101, and said microprocessor 3 is through said single channel interface CN101A and/or binary channels interface H101 outputting video signal.In the present embodiment, this Low Voltage Differential Signal output circuit comprises single channel and binary channels.Preferably, this single channel interface CN101A is HP2.0-15X2, through the spread spectrum clock of update routine control microprocessor 3; Open up control frequently, through the output of spread spectrum clock, the output signal reduces electromagnetic interference (EMI) through producing electric current and rate of change; And then reach the effect of preferable anti-electromagnetic interference (EMI); In addition, also can change the pin definitions of microprocessor 3, make it possess programmable output channel function of exchange through programmed control; Change the polarity of the output signal of microprocessor 3 through program; Make Low Voltage Differential Signal possess polarity and change function, thus the low-voltage differential output circuit 4 of the utility model can corresponding different model, the display screen of distinct interface, make that the usable range of this display is wider.
In the circuit structure diagram of the control display circuit 8 of the preferred embodiment of the low-power consumption high-definition liquid crystal circuit of display driving of the utility model shown in Figure 5; Said low-power consumption high-definition liquid crystal circuit of display driving also comprises and is used for control display circuit 8 that said microprocessor 3 is provided with; Said control display circuit 8 comprises and is used to connect the control interface of external control keyboard and is used to connect the display interface of pointing out LED; Said external control keyboard is connected with said microprocessor 3 through said control interface; Said prompting LED is connected with said microprocessor 3 through said display interface, and said control display circuit 8 also is connected with said electric power management circuit 5 simultaneously.
In the present embodiment, the 45th, 46,48,49,103,110,111 pins of microprocessor 3 are connected with the external control keyboard through control interface, and the 108th, 109 pins of microprocessor 3 connect through display interface supports the two paths of LED prompting; In the present embodiment, the external control keyboard comprises array button and AD type button, and the LED prompting comprises the LED display mode; Use the LED lamp of which kind of type; LED brightness etc., flexible to operation, adaptability is stronger; Control display circuit 8 also can provide the synchronous DRAM SDRAM of 12K word; Can show 2048 characters simultaneously, also can show 4 sub-windows simultaneously, support the color character of 24 euchroics to show; The display color that makes screen menu type regulate and control is gorgeous, and stereovision is stronger.In addition, the screen menu type of display is regulated the effect with control shade and fringing, and the translucent display effect of may command is also supported the dynamic effect of diagonal stretch, has strengthened the visual effect of on-screen menu effectively, can satisfy different user's requests.
Preferred embodiment as the low-power consumption high-definition liquid crystal circuit of display driving of the utility model; As shown in Figure 9; Said low-power consumption high-definition liquid crystal circuit of display driving also comprises the storer 9 that memory function is provided; Said storer 9 comprises EEPROM and/or flash memory, and said storer 9 is connected with said microprocessor 3 with said electric power management circuit 5 simultaneously.Said storer 9 is the storer of model W25X10.
In the present embodiment, storer 9 comprises EEPROM and flash memory, and preferably, this storer 9 is that model is the flash memory of PM25LV010A-100SCE, and 1,2,5 of storer 9 is connected the 69th to 72 pin of microprocessor 3 with 6 pins.Program data can through burning program, directly be stored transmission of data by analog video input circuit 1 to microprocessor 3 and storer 9; Needn't just can satisfy different users's requirement through dismounting, if during user's temporary needs change program, can be directly VGA connector CN102 through analog video input circuit 1 change program; And, avoided the program that need do over again because of dismounting without the teardown of engine, dirigibility is stronger; Also improve production efficiency, reduced cost.
In the circuit structure diagram of the electric power management circuit 5 of the preferred embodiment of the low-power consumption high-definition liquid crystal circuit of display driving of the utility model shown in Figure 2; Said electric power management circuit 5 comprises DC supply socket CN201, the first step-down chip U203, the second step-down chip U202, the 3rd step-down chip U206 and power supply chip U205; Direct supply is connected to said microprocessor 3 and said storer 9 through said DC supply socket CN201, the said first step-down chip U203, the said second step-down chip U202 and said power supply chip U205 successively; Direct supply is connected to said low-voltage differential output circuit 4 through said DC supply socket CN201, the said first step-down chip U203, said the 3rd step-down chip U206 and said power supply chip U205 successively, and said direct supply is connected to the display backlight power supply through said DC supply socket CN201.
Electric power management circuit 5 provides power supply directly for note amplifier U301, pass through DC supply socket CN201, electrochemical capacitor C219 then after, feed circuit are divided into four the tunnel, lead up to interface H201 externally connected with display screen backlight electric power, supply power to display backlight; Leading up to the first step-down chip U203, the second step-down chip U202, power supply chip U205 is connected to storer 9, is storer 9 power supplies; Leading up to the first step-down chip U203, the second step-down chip U202, power supply chip U205 is connected to microprocessor 3; Be microprocessor 3 power supplies, leading up to the first step-down chip U203, the 3rd step-down chip U206 at last, is connected the Low Voltage Differential Signal output circuit with MOS switch Q205 be that display screen panel is supplied power.Particularly; Direct supply provides 5V power supply through electric power management circuit 5 for note amplifier U301, for microprocessor 3 provides 3.3V power supply, for storer 9 provides 3.3V power supply; For the Low Voltage Differential Signal output circuit provides the power supply of 3.3V and 5V, the power supply of 12V is provided for hardboard.Because different Low Voltage Differential Signal power supplys is provided, therefore can connect the liquid crystal display of dissimilar voltage, compatible good, thus the different LCD of may command shows.In the present embodiment, power supply chip U205 can reduce the loss of circuit effectively, has reduced cost.
In the present embodiment; Video input signals is divided into two-way, and the digital signal input circuit 6 of leading up to is imported (as shown in Figure 4), and the analog video input circuit 1 of leading up to is in addition imported (as shown in Figure 3); After input signal is handled and is changed through microprocessor 3; Convert Low Voltage Differential Signal to, then output to 4 outputs of Low Voltage Differential Signal circuit, and be transported on the panel of connected display screen by low-voltage differential output circuit 4 through microprocessor 3.
The electric power management circuit 5 of the low-power consumption high-definition liquid crystal circuit of display driving of the utility model has adopted the power supply chip U205 that can reduce the circuit power loss; Through adopting the higher chip of integrated level, reduced peripheral cell, element constitutes distribution rationally; Circuit whole reliability and security have been improved greatly; Improve the performance of display, also simplified circuit structure, reduced cost.The microprocessor 3 of the utility model is connected with digital signal input circuit 6 with analog video input circuit 1 respectively simultaneously; Spread bandwidth effectively; Accelerate the LCD response speed and improve signal frequency, reduce the distortion rate of signal, improve the resolving power of display.
The above is merely the embodiment of the utility model; Be not thus the restriction the utility model claim; Every equivalent structure transformation that utilizes the utility model instructions and accompanying drawing content to be done; Or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the utility model.
Claims (10)
1. a low-power consumption high-definition liquid crystal circuit of display driving is characterized in that, comprising:
The analog video input circuit (1) that is used for input analog video signal;
Be used to import the analogue audio frequency input circuit (2) of simulated audio signal;
Be used for microprocessor (3) that said analog video signal and said simulated audio signal are handled;
Be used to export the low-voltage differential output circuit (4) of the signal after said microprocessor (3) is handled; And
Be used for electric power management circuit (5) that said microprocessor (3) and said low-voltage differential output circuit (4) are supplied power;
Said analog video input circuit (1), said analogue audio frequency input circuit (2) and said low-voltage differential output circuit (4) are connected with said microprocessor (3) respectively; Said low-voltage differential output circuit (4) and said microprocessor (3) are connected with said electric power management circuit (5) respectively.
2. low-power consumption high-definition liquid crystal circuit of display driving according to claim 1 is characterized in that said analog video input circuit (1) comprises the VGA connector, and analog video signal is input to said microprocessor (3) through said VGA connector.
3. low-power consumption high-definition liquid crystal circuit of display driving according to claim 1; It is characterized in that; Said analogue audio frequency input circuit (2) comprises audio input interface, and simulated audio signal is input to said microprocessor (3) through said audio input interface.
4. low-power consumption high-definition liquid crystal circuit of display driving according to claim 1; It is characterized in that; Said low-voltage differential output circuit (4) comprises single channel interface and/or binary channels interface, and said microprocessor (3) is through said single channel interface and/or binary channels interface outputting video signal.
5. low-power consumption high-definition liquid crystal circuit of display driving according to claim 1; It is characterized in that; Said low-power consumption high-definition liquid crystal circuit of display driving also comprises digital signal input circuit (6); Said digital signal input circuit (6) comprises the HDMI connector, and digital signal is input to said microprocessor (3) through said HDMI connector.
6. low-power consumption high-definition liquid crystal circuit of display driving according to claim 1; It is characterized in that; Said low-power consumption high-definition liquid crystal circuit of display driving also comprises and is used for audio control circuit (7) that the sound signal of said microprocessor (3) output is handled; Said audio control circuit (7) comprises the note amplifier that the sound signal of said microprocessor (3) output is carried out processing and amplifying; And the audio output interface of the audio signal output after said note amplifier handled, said audio control circuit (7) also is connected with said electric power management circuit (5) simultaneously.
7. low-power consumption high-definition liquid crystal circuit of display driving according to claim 1; It is characterized in that; Said low-power consumption high-definition liquid crystal circuit of display driving also comprises and is used for control display circuit (8) that said microprocessor (3) is provided with; Said control display circuit (8) comprises and is used to connect the control interface of external control keyboard and is used to connect the display interface of pointing out LED; Said external control keyboard is connected with said microprocessor (3) through said control interface, and said prompting LED is connected with said microprocessor (3) through said display interface, and said control display circuit (8) also is connected with said electric power management circuit (5) simultaneously.
8. low-power consumption high-definition liquid crystal circuit of display driving according to claim 1; It is characterized in that; Said low-power consumption high-definition liquid crystal circuit of display driving also comprises the storer (9) that memory function is provided; Said storer (9) comprises EEPROM and/or flash memory, and said storer (9) is connected with said microprocessor (3) with said electric power management circuit (5) simultaneously.
9. low-power consumption high-definition liquid crystal circuit of display driving according to claim 8; It is characterized in that; Said electric power management circuit (5) comprises DC supply socket, the first step-down chip, the second step-down chip, the 3rd step-down chip and power supply chip; Direct supply is connected to said microprocessor (3) and said storer (9) through said DC supply socket, the said first step-down chip, the said second step-down chip and said power supply chip successively; Direct supply is connected to said low-voltage differential output circuit (4) through said DC supply socket, the said first step-down chip, said the 3rd step-down chip and said power supply chip successively, and said direct supply is connected to the display backlight power supply through said DC supply socket.
10. according to Claim 8 or 9 described low-power consumption high-definition liquid crystal circuit of display driving, it is characterized in that said storer (9) is the storer of model W25X10, said electric power management circuit (5) comprises the chip of model AUR9701; Said microprocessor (3) is the chip of model NT68676.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201903958U CN202126826U (en) | 2011-06-08 | 2011-06-08 | Low-power-consumption drive circuit for high-definition liquid crystal display (LCD) |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201903958U CN202126826U (en) | 2011-06-08 | 2011-06-08 | Low-power-consumption drive circuit for high-definition liquid crystal display (LCD) |
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| CN202126826U true CN202126826U (en) | 2012-01-25 |
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| CN2011201903958U Expired - Fee Related CN202126826U (en) | 2011-06-08 | 2011-06-08 | Low-power-consumption drive circuit for high-definition liquid crystal display (LCD) |
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