CN100359544C - Display drive chip and method for transmitting data thereof - Google Patents
Display drive chip and method for transmitting data thereof Download PDFInfo
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- CN100359544C CN100359544C CNB2005100714426A CN200510071442A CN100359544C CN 100359544 C CN100359544 C CN 100359544C CN B2005100714426 A CNB2005100714426 A CN B2005100714426A CN 200510071442 A CN200510071442 A CN 200510071442A CN 100359544 C CN100359544 C CN 100359544C
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- 238000000034 method Methods 0.000 title claims abstract description 20
- 239000000872 buffer Substances 0.000 claims abstract description 27
- 230000005540 biological transmission Effects 0.000 claims description 10
- 230000010354 integration Effects 0.000 abstract 4
- 238000010586 diagram Methods 0.000 description 4
- 230000000712 assembly Effects 0.000 description 3
- 238000000429 assembly Methods 0.000 description 3
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 230000002123 temporal effect Effects 0.000 description 1
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Abstract
The present invention relates to a display drive chip and a method for transmitting data thereof. The display drive chip is used for receiving a system signal to drive a display panel or transmit data to integration assembly, and comprises an I/O interface circuit, an index buffer, a control buffer and an interface circuit of the integration assembly, wherein the I/O interface circuit outputs a first address signal and a first data signal after receiving the system signal. The index buffer temporarily stores and outputs the first address signal. The control buffer temporarily stores and outputs the first data signal according to the first address signal output by the index buffer. The interface circuit of the integration assembly generates a second data signal based on the first data signal and outputs the second data signal to the integration assembly.
Description
Technical field
The method of relevant a kind of display driver chip of the present invention and transmission data thereof, and particularly relevant a kind of display driver chip and transfer data to the method for integrated assembly.
Background technology
Please refer to Fig. 1, it is the synoptic diagram of traditional display module.Display module 100 comprises display panel 130, display driver chip 110 and circuit board 120.Display driver chip 110 is in order to drive display panel 130 with display frame.Display driver chip 110 comprises I circuit 111, indexed cache device (Indexregister) 112, control buffer (Control register) 113 and display driver circuit 114.Display driver chip 110 in order to according to the system signal A0 of system 150 output to drive display panel 130.The system signal A0 that I/O interface circuit 111 is exported in order to receiving system 150, and export an address signal A1 and a data-signal A2 according to this.Indexed cache device 112 temporary address signal A1 also export control buffer 113 to.Control buffer 113 according to address signal A1 and data-signal A2 to produce control signal C4.To drive display panel 130, control signal C4 for example is orders such as battery saving mode or sweep frequency change to display driver circuit 114 according to control signal C4.
When display module 100 during, need the extra integrated assembly that increases to use, promptly in circuit board 120 configuration integrated assembly 121, integrated assembly 122 and integrated assemblies 123 or the like to cooperate various product in different demand.In order to add extra integrated assembly, then must go into end in the output that is connected with system 150 increases pin, just make system 150 can be by the pin position that increases with transmission as signal C1, C2 and C3 to integrated assembly 121, integrated assembly 122 and integrated assembly 123 etc.
Yet, must on display module, increase a plurality of pins in order to increase above-mentioned integrated assembly, will cause following shortcoming:
1. pin count increases and cost is improved;
2. make the piece degree of difficulty of coupling part of display module improve;
3. when making system manufacturer assembling display module, difficulty improves;
4. the board area that increases display module and system increases.
And above shortcoming will cause sizable reduction for product competitiveness.
Summary of the invention
In view of this, the purpose of this invention is to provide the method for a kind of display driver chip and transmission data thereof, avoid to increase the problem of the pin that is connected with system in order to increase the integrated assembly in the display module.
A kind of display driver chip is proposed according to an aspect of the present invention, in order to the system signal of receiving system output to drive display panel or to transfer data to integrated assembly.Display driver chip comprises I/O interface circuit, indexed cache device, control buffer and integrated assembly interface circuit.Output first address signal and first data-signal behind first system signal of I/O interface circuit receiving system output.Temporary first address signal of indexed cache device and output.Temporary first data-signal of control buffer is exported first data-signal according to first address signal of indexed cache device output.The integrated assembly interface circuit produces second data-signal according to first data-signal and exports integrated assembly to.
Propose a kind of method of transmitting data according to a further aspect of the invention, be used for a display driver chip.At first, make display driver chip receive one first system signal of system output to produce one first address signal and one first data-signal.Then, temporary first address signal and first data-signal.At last, according to first address signal, will export integrated assembly to one second data-signal that first data-signal produces.
For above-mentioned purpose of the present invention, characteristics and advantage can be become apparent, a preferred embodiment cited below particularly, and conjunction with figs. is elaborated as follows:
Description of drawings
Fig. 1 is the synoptic diagram of traditional display module.
Fig. 2 is the calcspar according to the display module of a preferred embodiment of the present invention.
Fig. 3 is the synoptic diagram of initiatively linking up according to the integrated assembly of a display module of a preferred embodiment of the present invention's proposition.
Fig. 4 is the method according to display driver chip of a preferred embodiment of the present invention and integrated assembly transmission data.
Embodiment
Please refer to Fig. 2, it is the calcspar according to the display module of a preferred embodiment of the present invention's proposition.Display module 200 comprises display panel 230, integrated assembly 221,222 and 223 and display driver chip 210.Display driver chip 210 in order to the system signal S1 of receiving system 250 output to drive display panel 230 and integrated assembly 221 to 223.Display driver chip 210 is electrically connected at a display panel in present embodiment, display driver chip also can directly be disposed on the display panel when practical application, as low temperature polycrystalline silicon (Low Temperature Poly-Silicon, display panel LTPS).
And integrated assembly 221 to 223 not only receives integrated assembly interface circuit 214 outputting data signals, also can initiatively link up with system 250.Please refer to Fig. 3, it is the synoptic diagram of initiatively linking up according to the integrated assembly of the display module of a preferred embodiment of the present invention's proposition.Be to be example in Fig. 3 with integrated assembly 221, when integrated assembly 221 desires are linked up with system 250, integrated assembly 221 outputting data signals da31 are to integrated assembly interface circuit 214, and integrated assembly interface circuit 214 corresponding integrated assemblies 221 and data-signal da31 produce address signal ad2 and data-signal da4.Indexed cache device 212 temporary address signal ad2 also export control buffer 213 to.Control buffer 213 is according to address signal ad2 and data-signal da4 outputting data signals da5.I/O interface circuit 211 according to data-signal da5 with output system signal S2 to system 250, and reach the purpose that integrated assembly 221 and system 250 are linked up.
And integrated assembly 221 to 223 also can be communicated with each other or controls by integrated assembly interface circuit 214.Integrated assembly 221 to 223 for example can be LED drive (LED driver), electric charge coupling integrated assembly inductor driver (CCD sensor driver), backlight driver (Back lightdriver), loudspeaker drive (speaker driver), voltage regulator (Voltage regulatordriver), motor driver (Motor driver) or CMOS (Complementary Metal Oxide Semiconductor) integrated assembly inductor driver (CMOS sensor driver) etc.
Please refer to Fig. 4, it is the method according to display driver chip of a preferred embodiment of the present invention and integrated assembly transmission data.At first, make display driver chip 210 receiving system signal S1 to produce address signal ad1 and data-signal da1, shown in step 41.Then, make display driver chip 210 temporary address signal ad1 and data-signal da1, shown in step 42.Afterwards, make display driver chip 210, produce a data-signal da2 with data-signal da1 and export integrated assembly 221,222 or 223 to according to address signal ad1.
The display driver chip that the above embodiment of the present invention disclosed reaches the method for transmitting data in display driver chip with integrated assembly, and following advantage is then arranged:
1. reduce pin count and cost, reduce the pin count and the connector cost of circuit board and system end;
2. make the piece degree of difficulty of coupling part of display module descend;
3. when making system manufacturer assembling display module, difficulty reduces;
4. reduce the board area of display module and system.
Under notion of the present invention, in the time of then can making display module increase integrated assembly, need not cause the loss of cost and form other inferior position.
In sum; though the present invention discloses as above with a preferred embodiment; yet it is not in order to limit the present invention; any person skilled in the art person; without departing from the spirit and scope of the present invention; when the change that can do various equivalences or replacement, so protection scope of the present invention is when looking accompanying being as the criterion that the application's claim scope defined.
Claims (19)
1. a display driver chip is electrically connected at a display panel and an integrated assembly, and this display driver chip comprises:
One I/O interface circuit is in order to one first system signal that receives system output and export one first address signal and one first data-signal;
One indexed cache device is electrically connected at this I/O interface circuit, in order to temporary this first address signal;
One control buffer is electrically connected at this indexed cache device and this I/O interface circuit, in order to temporary this first data-signal, and exports this first data-signal according to first address signal that this indexed cache device is exported; And
One integrated assembly interface circuit is electrically connected at this control buffer, and this integrated assembly interface circuit is exported one second data-signal to this integrated assembly according to this first data-signal.
2. display driver chip as claimed in claim 1 is characterized in that this integrated assembly interface circuit comprises a general output/input circuit.
3. display driver chip as claimed in claim 1 is characterized in that described display driver chip also comprises a display driver circuit, is electrically connected at this control buffer, controls signal to this display panel to transmit one.
4. display driver chip as claimed in claim 1 is characterized in that this integrated assembly is also in order to export one the 3rd data-signal to this integrated assembly interface circuit.
5. display driver chip as claimed in claim 4 is characterized in that this integrated assembly interface circuit also produces one second address signal and one the 4th data-signal according to the 3rd data-signal.
6. display driver chip as claimed in claim 5 is characterized in that this indexed cache device is also in order to temporary this second address signal.
7. display driver chip as claimed in claim 6 is characterized in that second address signal and the 4th data-signal that this control buffer is also exported according to this indexed cache device, in order to export one the 5th data-signal.
8. display driver chip as claimed in claim 7, it is characterized in that this I/O interface circuit also according to the 5th data-signal in order to export one second system signal to this system.
9. display driver chip as claimed in claim 1 is characterized in that this integrated assembly comprises LED drive.
10. display driver chip as claimed in claim 1 is characterized in that this integrated assembly comprises loudspeaker drive.
11. a transmission data method is used for a display driver chip, this method comprises:
Step 1, one first system signal that receives system output is to produce one first address signal and one first data-signal;
Step 2, temporary this first address signal and this first data-signal; And
Step 3, according to this first address signal, second data-signal to an integrated assembly that output one produces according to this first data-signal.
12. method as claimed in claim 11 is characterized in that this second data-signal is via a general output/input circuit transmission.
13. method as claimed in claim 11 is characterized in that, after the described step 2, comprises that also producing one according to this first address signal and this first data-signal controls signal to a display driver circuit.
14. method as claimed in claim 11 is characterized in that, after the described step 3, also comprises from this integrated assembly and exports one the 3rd data-signal.
15. method as claimed in claim 14 is characterized in that also comprising according to the 3rd data-signal and produces one second address signal and one the 4th data-signal.
16. method as claimed in claim 15 is characterized in that also comprising according to this second address signal and the 4th data-signal and produces one the 5th data-signal.
17. method as claimed in claim 16 is characterized in that also comprising according to the 5th data-signal to export one second system signal to this system.
18. method as claimed in claim 14 is characterized in that the 3rd data-signal is via a general output/input circuit transmission.
19. method as claimed in claim 15 is characterized in that also comprising that producing one according to this this second address signal and the 4th data-signal controls signal to a display driver circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100714426A CN100359544C (en) | 2005-05-10 | 2005-05-10 | Display drive chip and method for transmitting data thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100714426A CN100359544C (en) | 2005-05-10 | 2005-05-10 | Display drive chip and method for transmitting data thereof |
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| Publication Number | Publication Date |
|---|---|
| CN1674068A CN1674068A (en) | 2005-09-28 |
| CN100359544C true CN100359544C (en) | 2008-01-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2005100714426A Expired - Fee Related CN100359544C (en) | 2005-05-10 | 2005-05-10 | Display drive chip and method for transmitting data thereof |
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| CN109698002B (en) * | 2017-10-23 | 2020-11-10 | 北京兆易创新科技股份有限公司 | Method and device for latching storage array data |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5670983A (en) * | 1994-10-31 | 1997-09-23 | Compaq Computer Corporation | Video controller with shared configuration pins |
| JPH11119739A (en) * | 1997-10-13 | 1999-04-30 | Sanyo Electric Co Ltd | Display data storage device |
| CN1044292C (en) * | 1993-05-13 | 1999-07-21 | 卡西欧计算机公司 | Display driving device |
| JP2003157039A (en) * | 1992-06-25 | 2003-05-30 | Seiko Epson Corp | Electronic appliance |
| TW594488B (en) * | 2003-04-28 | 2004-06-21 | Phison Electronics Corp | Single-chip flash memory control system by using common bus to turn on the external ROM |
| CN1163858C (en) * | 1998-03-25 | 2004-08-25 | 奥罗拉系统公司 | Internal row sequencer for reducing bandwidth and peak current requirements display driver circuit |
-
2005
- 2005-05-10 CN CNB2005100714426A patent/CN100359544C/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003157039A (en) * | 1992-06-25 | 2003-05-30 | Seiko Epson Corp | Electronic appliance |
| CN1044292C (en) * | 1993-05-13 | 1999-07-21 | 卡西欧计算机公司 | Display driving device |
| US5670983A (en) * | 1994-10-31 | 1997-09-23 | Compaq Computer Corporation | Video controller with shared configuration pins |
| JPH11119739A (en) * | 1997-10-13 | 1999-04-30 | Sanyo Electric Co Ltd | Display data storage device |
| CN1163858C (en) * | 1998-03-25 | 2004-08-25 | 奥罗拉系统公司 | Internal row sequencer for reducing bandwidth and peak current requirements display driver circuit |
| TW594488B (en) * | 2003-04-28 | 2004-06-21 | Phison Electronics Corp | Single-chip flash memory control system by using common bus to turn on the external ROM |
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| CN1674068A (en) | 2005-09-28 |
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