CN103971647A - Display driver device - Google Patents
Display driver device Download PDFInfo
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- CN103971647A CN103971647A CN201310027720.2A CN201310027720A CN103971647A CN 103971647 A CN103971647 A CN 103971647A CN 201310027720 A CN201310027720 A CN 201310027720A CN 103971647 A CN103971647 A CN 103971647A
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Abstract
The invention provides a display driver device. The display driver device comprises an image processor, a time schedule controller and a plurality of source electrode drivers. The image processor is used for judging whether image pictures corresponding to picture data are static and outputting the picture data and the judgment result. The time schedule controller is used for receiving the picture data from the image processor and outputting the picture data. The source electrode drivers are used for receiving the picture data from the time schedule controller and driving a display panel according to the picture data. Each source electrode driver comprises a memorizer module used for memorizing the picture data corresponding to the static pictures. When the source electrode drivers drive the display panel according to the picture data corresponding to the static pictures, the image processor stops outputting the picture data to the time schedule controller, and the time schedule controller stops outputting the picture data to the source electrode drivers.
Description
Technical field
The invention relates to a kind of drive unit, and relate to especially a kind of display drive apparatus.
Background technology
Liquid crystal display (Liquid Crystal Display, LCD) have that external form is frivolous, power consumption is few and a characteristic such as radiationless pollution, be widely used on the information products such as various computer systems, mobile phone, personal digital assistant (PDA).The principle of work of liquid crystal display is to utilize liquid crystal molecule under different ordered states, light is had to different polarizations or refraction effect, therefore can control by the liquid crystal molecule of different ordered states the amount of penetrating of light, further produce the output light of varying strength, and the red, green, blue of different GTG intensity.
Carry out the operation of above-mentioned demonstration image, normally utilize time schedule controller, gate drivers, source electrode driver to drive liquid crystal display.In order to carry out image processing, prior art be by reservoir designs in time schedule controller.In the time that liquid crystal display shows tableaux, time schedule controller and source electrode driver still need to continue to transmit picture data to each other, therefore can continue power consumption.
Summary of the invention
The invention provides a kind of display drive apparatus, can reach power saving effect.
The invention provides a kind of display drive apparatus, in order to drive a display panel.Display drive apparatus comprises an image processor, time schedule controller and multiple source electrode driver.Image processor is in order to judge whether the corresponding image frame of a picture data is tableaux, and output picture data and a judged result.Time schedule controller is coupled to image processor, in order to receive picture data from image processor, and output picture data.Source electrode driver is coupled to time schedule controller, in order to receive picture data from time schedule controller, and drives display panel according to picture data.Each source electrode driver comprises a memory module, in order to store the picture data of corresponding tableaux.In the time that source electrode driver drives display panel according to the picture data of corresponding tableaux, image processor stops exporting picture data to time schedule controller, and time schedule controller stops exporting picture data to source electrode driver.
In one embodiment of this invention, above-mentioned each memory module comprises an image processing circuit and a memory circuitry.Image processing circuit is coupled to time schedule controller, and in order to picture data is carried out to one first image processing, and output is through the picture data of the first image processing.Memory circuitry is coupled to image processing circuit, in order to store the picture data through the first image processing.
In one embodiment of this invention, in the time that above-mentioned each source electrode driver drives display panel according to picture data, image processing circuit reads picture data from memory circuitry, and picture data is carried out to one second image processing.
In one embodiment of this invention, above-mentioned memory module is also in order to store the picture data of corresponding dynamic menu.
In one embodiment of this invention, above-mentioned each source electrode driver also comprises a multiplexer circuit.Multiplexer circuit is coupled to time schedule controller, in order to according to a control signal, selects the output picture data of corresponding dynamic menu or the picture data of corresponding dynamic menu to drive display panel.
In one embodiment of this invention, above-mentioned image processor is controlled multiplexer circuit according to judged result output control signal.
In one embodiment of this invention, above-mentioned each source electrode driver also comprises a multiplexer controller.Whether multiplexer controller is coupled to time schedule controller, be tableaux in order to the corresponding image frame of picture data that judges time schedule controller output, and controls multiplexer circuit according to judged result output control signal.
In one embodiment of this invention, above-mentioned each memory module comprises an image processing circuit and a memory circuitry.Image processing circuit is coupled to time schedule controller, and in order to picture data is carried out to one first image processing, and output is through the picture data of the first image processing.Memory circuitry is coupled to image processing circuit, in order to store the picture data through the first image processing.In the time that multiplexer circuit is selected the picture data of the corresponding tableaux of output, image processing circuit reads picture data from memory circuitry, and picture data is carried out to one second image processing, and output is through the picture data of the second image processing.
In one embodiment of this invention, above-mentioned each source electrode driver more comprises a gamma voltage output circuit.Gamma voltage output circuit is coupled to time schedule controller, and in order to receive picture data from time schedule controller, and a gamma voltage signal of exporting corresponding picture data drives display panel.Each source electrode driver is controlled its inner gamma voltage output circuit according to picture data, to adjust gamma voltage signal.
In one embodiment of this invention, above-mentioned display drive apparatus and display panel are arranged at an image display device.Image display device comprises a light source module, in order to this display panel one backlight to be provided.Each source electrode driver is controlled light source module according to picture data, to adjust the brightness of backlight.
Based on above-mentioned, in exemplary embodiment of the present invention, each source electrode driver can store memory module therein by picture data, therefore, in the time that display panel shows tableaux, image processor and time schedule controller can stop respectively exporting corresponding picture data to time schedule controller and each source electrode driver.
For above-mentioned feature and advantage of the present invention can be become apparent, special embodiment below, and coordinate accompanying drawing to be described in detail below.
Brief description of the drawings
Fig. 1 is the schematic diagram of the present invention's one relevant routine display drive apparatus;
Fig. 2 is the schematic diagram of the display drive apparatus of one embodiment of the invention;
Fig. 3 is the schematic diagram of the source electrode driver of one embodiment of the invention;
Fig. 4 is the schematic diagram of the source electrode driver of another embodiment of the present invention;
Fig. 5 is the schematic diagram of the image display device of one embodiment of the invention.
Description of reference numerals:
100,200: display drive apparatus;
110,210: image processor;
120,220,320,420: time schedule controller;
122: storer;
130_1,130_2,130_ (n-1), 130_n, 230_1,230_2,230_ (n-1), 230_n, 330,430: source electrode driver;
232_1,232_2,232_ (n-1), 232_n: memory module;
331,431: memory circuitry;
332,432: memory module;
333,433: image processing circuit;
334,434: transceiver circuit;
335a, 435a: memory storage circuit;
335b, 435b: memorizer control circuit;
336,436: gamma voltage output circuit;
337a: the first latch unit circuit;
337b: the second latch unit circuit;
338: multiplexer circuit;
339,439: output buffer circuit;
340: multiplexer controller;
437: latch unit circuit;
500: image display device;
510: display panel;
520: light source module;
S1, S2: picture data;
Sctr11, Sctr12, Sctr13: control signal;
Sd: dynamic menu data;
Sc: tableaux data;
Y1, Y2, Y3, YN-1, YN: pixel data;
Vr: gamma voltage signal.
Embodiment
Fig. 1 is the schematic diagram of the present invention's one relevant routine display drive apparatus.Please refer to Fig. 1, this relevant routine display drive apparatus 100 comprises image processor 110, time schedule controller 120 and multiple source electrode driver 130_1 to 130_n, in order to drive display panel (not shown).These display drive apparatus 100 support screens upgrade (Panel Self Refresh, PSR) function automatically, and in order to support this function, time schedule controller 120 inside must comprise that storer 122 stores still frame.Therefore,, in the time of picture still, image processor 110 can deposit into tableaux in the storer 122 of time schedule controller 120.Then, image processor 110 can stop exporting picture data S1 to time schedule controller, directly provide the tableaux data S2 being stored in storer 122 to source electrode driver 130_1 to 130_n, to reduce the power consumption of image processor 110 by time schedule controller 120.But due to the state being now still between time schedule controller 120 and source electrode driver 130_1 to 130_n in continuing transmission picture data, therefore, this operation meeting significantly increases the power consumption of time schedule controller 120.
Fig. 2 is the schematic diagram of the display drive apparatus of one embodiment of the invention.Please refer to Fig. 2, the display drive apparatus 200 of the present embodiment comprises image processor 210, time schedule controller 220 and multiple source electrode driver 230_1 to 230_n.Image processor 210 is in order to judge whether the corresponding image frame of picture data S1 is tableaux, and output picture data S1 is to time schedule controller 220.Time schedule controller 220 is coupled to image processor 210, in order to receive picture data S1 from image processor 210, and exports respectively picture data S2 to each source electrode driver 230_1 to 230_n.Source electrode driver 230_1 to 230_n is coupled to time schedule controller 220, in order to receive picture data S2 from time schedule controller 220, and drives display panel (not shown) according to picture data S2.
Specifically, in the present embodiment, each source electrode driver 230_1 to 230_n comprises memory module 232_1 to 232_n, in order to store the picture data S2 of corresponding tableaux.In the time that source electrode driver 230_1 to 230_n drives display panel according to tableaux data S2, the image processor 210 of the present embodiment can stop exporting picture data S1 to time schedule controller 220, and time schedule controller 220 also can stop exporting picture data S2 to source electrode driver 230_1 to 230_n, to reduce the power consumption of display drive apparatus 200 entirety.Particularly, compared to the display drive apparatus 100 of Fig. 1, the time schedule controller 220 of the present embodiment does not configure the storage unit corresponding to storer 122.Relative, the source electrode driver 230_1 to 230_n of the present embodiment comprises respectively memory module 232_1 to 232_n.These memory module 232_1 to 232_n can make image processor 210 in the time of picture still, and tableaux data S2 is stored to respectively in source electrode driver 230_1 to 230_n.Therefore, the picture data S1 that image processor 210 can stop exporting corresponding tableaux is to time schedule controller, and the picture data S2 that image processor 210 also can stop exporting corresponding tableaux is to source electrode driver 230_1 to 230_n, directly utilize stored tableaux data S2 to drive display panel by source electrode driver 230_1 to 230_n, to reduce the power consumption of image processor 210 and time schedule controller 220 entirety.
It should be noted, in the present embodiment, the memory module 232_1 to 232_n of source electrode driver 230_1 to 230_n is not limited to store the picture data of corresponding tableaux, also can be in order to store the picture data of corresponding dynamic menu.
Fig. 3 is the schematic diagram of the source electrode driver of one embodiment of the invention.Please refer to Fig. 3, the source electrode driver 330 of the present embodiment comprises memory module 332, transceiver circuit 334, gamma voltage output circuit 336, multiplexer circuit 338 and multiplexer controller 340.Transceiver circuit 334 is coupled to time schedule controller 320, and the picture data S2 exporting in order to receive time schedule controller 320 comprises R, G, B pixel data or other demonstration information, and exports received picture data S2 to next stage circuit.In the present embodiment, source electrode driver 330 can be that dynamic menu or tableaux determine whether that tableaux stored in selection memory module 332 drives display panel according to picture data S2.
Particularly, the multiplexer controller 340 of the present embodiment is in order to judge whether the corresponding image frame of picture data S2 is tableaux, and controls multiplexer circuit 338 according to judged result output control signal Sctr11.Multiplexer circuit 338, in order to according to control signal Sctr11, selects the output picture data of corresponding dynamic menu or the picture data of corresponding tableaux to drive display panel.Through judgement, if picture data S2 is dynamic menu, multiplexer circuit 338 can be exported dynamic menu data Sd, and by data bus-bar, dynamic menu data Sd is sequentially stored to the first latch unit circuit 337a and the second latch unit circuit 337b.Then, then by output buffer circuit 339 output pixel data Y1 to YN drive panel.Otherwise if picture data S2 is tableaux, multiplexer circuit 338 can drive display panel by output tableaux data Sc.
It should be noted, the picture data S2 that multiplexer controller 340 judges is provided by the transceiver circuit 334 of source electrode driver 330 inside, is provided by outside time schedule controller 320.In addition,, although the control signal Sctr11 of the present embodiment is produced by multiplexer controller 340, the present invention is not as limit.In another embodiment, source electrode driver 330 also can design and not configure multiplexer controller 340, and the image processor 210 that direct utilization is for example Fig. 2 produces control signal Sctr11.That is to say, image processor 210 also can judge whether the corresponding image frame of picture data S2 is tableaux, and exports control signal Sctr11 according to judged result.
When further illustrating picture data S2 and being tableaux, the mode of operation of source electrode driver 330.In the present embodiment, memory module 332 more comprises image processing circuit 333 and memory circuitry 331.Image processing circuit 333 is in order to picture data S2 is carried out to the first image processing, the squeezed data or adjust the image processing such as picture contrast, resolution, colour vividness, brightness of picture data in this way of the first image processing example herein.And treated picture data is stored to memory circuitry 331 by image processing circuit 333.In the present embodiment, memory circuitry 331 comprises memory storage circuit 335a and memorizer control circuit 335b.Memory storage circuit 335a is in order to stored picture data, and memorizer control circuit 335b is in order to read-write operation and the storage block of control, supervisory frame data.Then, in the time that multiplexer circuit 338 wishs are selected the picture data Sc of the corresponding tableaux of output, image processing circuit 333c can read picture data from memory storage circuit 335a, and read picture data Sc is carried out to the second image processing, export again afterwards picture data Sc through image processing to multiplexer circuit 338.
It should be noted, the second image processing operations is optionally implemented.For example, if image processing circuit 333 is to store after picture data S2 is compressed again,, in the time reading picture data Sc, image processing circuit 333 can carry out exporting to multiplexer circuit 338 after decompress(ion) to picture data Sc again.Relative, if image processing circuit 333 is first image processing of the picture contrast of adjusting picture data S2, resolution, colour vividness, brightness etc., the second image processing operations of this example is optionally implemented.
In addition, gamma voltage output circuit 336 is in order to receive picture data S2 from time schedule controller 320, and output drives display panel corresponding to the gamma voltage signal Vr of different pictures data.In the present embodiment, image processing circuit 333 also can utilize control signal Sctr12 to control gamma voltage output circuit 336 according to picture data S2, the gamma voltage signal Vr being exported to adjust, thus reach the effect of power saving.
Therefore, in the present embodiment, source electrode driver 330 comprises memory module 332, can be in order to store the picture data of corresponding tableaux.In the time that source electrode driver 330 drives display panel according to the picture data of corresponding tableaux, image processor (not shown) stops exporting picture data to time schedule controller 320, and time schedule controller 320 stops exporting picture data to source electrode driver 330, thus the power consumption of reduction image processor (not shown) and time schedule controller 320 entirety.
Fig. 4 is the schematic diagram of the source electrode driver of another embodiment of the present invention.Please refer to Fig. 3 and Fig. 4, the source electrode driver 430 of the present embodiment is similar to the source electrode driver 330 of Fig. 3, and just main difference is for example not configure in source electrode driver 430 multiplexer circuit and multiplexer controller between the two.In the present embodiment, according to actual design demand, source electrode driver 430 can't be that dynamic menu or tableaux are distinguished to picture data S2.No matter picture data S2 is dynamic menu or tableaux, and memory module 432 all can be carried out to picture data S2 the operation of image processing and data storing.Therefore, in the present embodiment, memory module 432 also can be in order to store the picture data S2 that dynamic menu is corresponding.Image processing circuit 433 can be stored to latch unit circuit 437 by picture data S2 via data bus-bar.Then, then by output buffer circuit 439 output pixel data Y1 to YN drive panel.
In addition, other operations of the source electrode driver 430 of the present embodiment can, by obtaining enough instructions, suggestion and implementation in the narration of the embodiment of Fig. 3, therefore repeat no more.
Fig. 5 is the schematic diagram of the image display device of one embodiment of the invention.Please refer to Fig. 2 and Fig. 5, the image display device 500 of the present embodiment comprises display drive apparatus 200, display panel 510 and light source module 520.Display drive apparatus 200 is in order to drive display panel 510 to show the image frame of corresponding picture data S2.Light source module 520 is for example light-emittingdiode backlight module, in order to provide display panel 510 to show the backlight that image frame is required.
In the present embodiment, the source electrode driver 230_1 to 230_n of display drive apparatus 200, the embodiment of its internal circuit can be for example the circuit framework shown in Fig. 3 and Fig. 4.In order to reach the object of power saving, each source electrode driver of display drive apparatus 200 can be controlled light source module 520 according to picture data, the brightness of the backlight being provided to adjust.For example, in the situation that display panel 510 shows tableaux, required back light source brightness may be lower, now image processing circuit 333,433 can be according to the image frame characteristic of picture data S2, close the part light-emittingdiode of light source module 520 inside via control signal Sctr13, thereby reduce the brightness of backlight, reach the object of power saving.
In sum, in exemplary embodiment of the present invention, source electrode driver comprises memory module, can be in order to stored picture data.In the time that source electrode driver drives display panel according to tableaux data, image processor stops exporting picture data to time schedule controller, and time schedule controller also stops exporting picture data to source electrode driver, thus the power consumption of reduction image processor and time schedule controller.
Finally it should be noted that: above each embodiment, only in order to technical scheme of the present invention to be described, is not intended to limit; Although the present invention is had been described in detail with reference to aforementioned each embodiment, those of ordinary skill in the art is to be understood that: its technical scheme that still can record aforementioned each embodiment is modified, or some or all of technical characterictic is wherein equal to replacement; And these amendments or replacement do not make the essence of appropriate technical solution depart from the scope of various embodiments of the present invention technical scheme.
Claims (10)
1. a display drive apparatus, in order to drive a display panel, is characterized in that, comprising:
One image processor, in order to judge whether the corresponding image frame of a picture data is tableaux, and exports this picture data and a judged result;
Time schedule controller, is coupled to this image processor, in order to receive this picture data from this image processor, and exports this picture data; And
Multiple source electrode drivers, be coupled to this time schedule controller, in order to receive this picture data from this time schedule controller, and drive this display panel according to this picture data, respectively this source electrode driver comprises a memory module, those memory module are in order to store this picture data of corresponding tableaux
Wherein in the time that those source electrode drivers drive this display panel according to this picture data of corresponding tableaux, this image processor stops exporting this picture data to this time schedule controller, and this time schedule controller stops exporting this picture data to those source electrode drivers.
2. display drive apparatus according to claim 1, is characterized in that, respectively this memory module comprises:
One image processing circuit, is coupled to this time schedule controller, and in order to this picture data is carried out to one first image processing, and output is through this picture data of the first image processing; And
One memory circuitry, is coupled to this image processing circuit, in order to store this picture data through the first image processing.
3. display drive apparatus according to claim 2, it is characterized in that, in the time that respectively this source electrode driver drives this display panel according to this picture data, this image processing circuit reads this picture data from this memory circuitry, and this picture data is carried out to one second image processing.
4. display drive apparatus according to claim 1, is characterized in that, those memory module are also in order to store this picture data of corresponding dynamic menu.
5. display drive apparatus according to claim 1, is characterized in that, respectively this source electrode driver also comprises:
One multiplexer circuit, is coupled to this time schedule controller, in order to according to a control signal, selects output this picture data of corresponding dynamic menu or this picture data of corresponding dynamic menu to drive this display panel.
6. display drive apparatus according to claim 5, is characterized in that, this image processor is exported this control signal according to this judged result and controlled this multiplexer circuit.
7. display drive apparatus according to claim 5, is characterized in that, respectively this source electrode driver also comprises:
Whether one multiplexer controller, is coupled to this time schedule controller, be tableaux, and export this control signal according to this judged result and control this multiplexer circuit in order to corresponding this image frame of this picture data that judges this time schedule controller output.
8. display drive apparatus according to claim 5, is characterized in that, respectively this memory module comprises:
One image processing circuit, is coupled to this time schedule controller, and in order to this picture data is carried out to one first image processing, and output is through this picture data of the first image processing; And
One memory circuitry, is coupled to this image processing circuit, in order to store this picture data through the first image processing,
Wherein in the time that this multiplexer circuit is selected this picture data of the corresponding tableaux of output, this image processing circuit reads this picture data from this memory circuitry, this picture data is carried out to one second image processing, and output is through this picture data of the second image processing.
9. display drive apparatus according to claim 1, is characterized in that, respectively this source electrode driver also comprises:
One gamma voltage output circuit, is coupled to this time schedule controller, and in order to receive this picture data from this time schedule controller, and output drives this display panel to a gamma voltage signal that should picture data,
Wherein respectively this source electrode driver is controlled this gamma voltage output circuit of its inside according to this picture data, to adjust this gamma voltage signal.
10. display drive apparatus according to claim 1, it is characterized in that, this display drive apparatus and this display panel are arranged at an image display device, this image display device comprises a light source module, in order to this display panel one backlight to be provided, wherein respectively this source electrode driver is controlled this light source module according to this picture data, to adjust the brightness of this backlight.
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| CN201310027720.2A CN103971647A (en) | 2013-01-24 | 2013-01-24 | Display driver device |
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| CN112951171A (en) * | 2021-01-29 | 2021-06-11 | 昆山龙腾光电股份有限公司 | Display device and driving method |
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Application publication date: 20140806 |