CN100543529C - The liquid crystal display module - Google Patents
The liquid crystal display module Download PDFInfo
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- CN100543529C CN100543529C CNB2006100646283A CN200610064628A CN100543529C CN 100543529 C CN100543529 C CN 100543529C CN B2006100646283 A CNB2006100646283 A CN B2006100646283A CN 200610064628 A CN200610064628 A CN 200610064628A CN 100543529 C CN100543529 C CN 100543529C
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Abstract
The invention provides a kind of liquid crystal display module, it comprises a display panels, one chip for driving and a flexible circuit board, this chip for driving comprises a system interface, one interface circuit, one register and a read-write control interface, this flexible circuit board is electrically connected with this system interface, this register is electrically connected with this system interface and this interface circuit, this flexible circuit board is controlled the read-write state of this register via this read-write control interface, this flexible circuit board writes digital signal via this system interface to this register, this interface circuit reads the interface mode of operation that the digital signal that writes this register is determined this chip for driving, and this flexible circuit board is via this system interface input data signal/control signal to this interface circuit to drive this display panels.
Description
Technical field
The present invention relates to a kind of liquid crystal display module.
Background technology
At present, (Liquid Crystal Display LCD) has replaced conventional cathode ray tube (Cathode Ray Tube, the CRT) display that is used for computer to LCD gradually, and because the liquid crystal display module of LCD such as has gently, approaches at characteristics, so make its application more extensive.
Seeing also Fig. 1, is a kind of structural representation of prior art liquid crystal display module.This liquid crystal display module 10 comprises a display panels 100, a chip for driving 110 and a flexible circuit board 170.This chip for driving 110 is pressed together on this display panels 100, and this flexible circuit board 170 is electrically connected with this chip for driving 110.This flexible circuit board 170 comprises an input end 171, a link 172 and a plurality of connecting line 173, and this input end 171 is electrically connected by these many connecting lines 173 with this link 172, and this link 172 is electrically connected with this chip for driving 110.
, be the integrated circuit synoptic diagram of chip for driving 110 shown in Figure 1 please in the lump with reference to Fig. 2.This integrated circuit comprises an interface circuit 130 and a sequential control circuit 140, and this sequential control circuit 140 is electrically connected with this interface circuit 130.This interface circuit 130 comprise one first interface selecting side 131, one second interface selecting side 132, one the 3rd interface selecting side 133, one the 4th interface selecting side 134 and a plurality of data-signal/control signal interface end D1, D2 ... Dn.This interface selecting side 131,132,133 and 134 and this data-signal/control signal interface end D1, D2 ... the respectively corresponding connecting line 173 that is electrically connected this flexible circuit board 170 of Dn.This flexible circuit board 170 is imported tetrad numeral signal to this interface circuit 130 via the interface selecting side 131,132,133 and 134 of this interface circuit 130, and determines the interface mode of operation of this chip for driving 110 by this tetrad numeral signal.This sequential control circuit 140 is worked under this interface mode of operation, external data via this data-signal/control signal interface end D1, D2 ... Dn inputs to this interface circuit 130, this interface circuit 130 these data-signals of transmission/control signal to this sequential control circuit 140 to drive this display panels 100.
Please in the lump with reference to table 1, be the tetrads numeral signal that receives of this interface selecting side 131,132,133 and 134 to chart that should chip for driving 110 interface mode of operations.This chip for driving 110 has multiple alternative interface mode of operation, the corresponding interface mode of operation of each tetrad numeral signal, this chip for driving 110 of the data-signal that each interface mode of operation corresponding selection is different/signaling interface end transmission of data signals/control signal to.Suppose that the signal " IM3 " that signal " IM0 " that each tetrad numeral signal receives by this first interface selecting side 131, signal " IM1 " that the second interface selecting side 132 receives, signal " IM2 " that the 3rd interface selecting side 133 receives and the 4th interface selecting side 134 receive unites expression, then the corresponding relation of itself and chip for driving interface mode of operation is as follows:
| IM0 | IM1 | IM2 | IM3 | Chip for driving interface mode of operation |
| 0 | 0 | 0 | 0 | 16 interfaces, the 68-system |
| 1 | 0 | 0 | 0 | 8 interfaces, the 68-system |
| 0 | 1 | 0 | 0 | 16 interfaces, the 80-system |
| 1 | 1 | 0 | 0 | 8 interfaces, the 80-system |
| 1 | 0 | 1 | 0 | The continuous number translation interface |
| 0 | 1 | 1 | 0 | Invalid setting |
| 0 | 0 | 0 | 1 | 18 interfaces, the 68-system |
| 1 | 0 | 0 | 1 | 9 interfaces, the 68-system |
| 0 | 1 | 0 | 1 | 18 interfaces, the 80-system |
| 1 | 1 | 0 | 1 | 9 interfaces, the 80-system |
| * | * | 1 | 1 | Invalid setting |
Table 1
This chip for driving 110 determines that the principle of this interface mode of operation is described in the following example: this flexible circuit board 170 is via the interface selecting side 131 of this interface circuit 130,132,133 and 134 input one tetrad numeral signals " 0100 " are to this interface circuit 130, this interface circuit 130 determines that according to this tetrad numeral signal these chip for driving 110 interface mode of operations are 16 interfaces, the 80-system, then corresponding data-signal/control signal interface end D1, D2, ... Dn is received from the data-signal/control signal of these flexible circuit board 170 inputs and transfers to this chip for driving 110, with data line (not indicating) and gate line (the not indicating) work that drives this display panels 100.
From the above, the interface circuit 130 of this chip for driving 110 directly is electrically connected with many connecting lines 173 of this flexible circuit board 170 by this interface selecting side 131,132,133 and 134, with input tetrad numeral signal, determine the interface mode of operation of this chip for driving 110 again according to this tetrad numeral signal.
So, this interface circuit 130 comprises a plurality of interfaces selecting side 131,132,133 and 134 and data-signal/control signal interface end D1, D2, ... Dn, then the link 172 of this flexible circuit board 170 also needs correspondence that a plurality of interfaces are set, that is: the interface of this link 172 and this a plurality of interfaces selecting side 131,132,133 and 134 and data-signal/control signal interface end D1, D2, ... the number of Dn is corresponding one by one with the connecting line number of this flexible circuit board 170, so the set number of pins of this chip for driving 110 is more, cause this chip for driving 110 and this flexible circuit board 170 wires design complexity, make that simultaneously the width of this link 172 is bigger, be unfavorable for the miniaturization Design demand of this liquid crystal display module 10.
Summary of the invention
Many for solving liquid crystal display module chip for driving number of pins, chip for driving wires design difficulty reaches the problem that is difficult for realizing the integral miniaturization design greatly, be necessary to provide a kind of minimizing chip for driving number of pins, reduce chip for driving wires design difficulty, the convenient liquid crystal display module of realizing the integral miniaturization design.
A kind of liquid crystal display module, it comprises a display panels, one is pressed together on the chip for driving and a flexible circuit board of this display panels, this chip for driving comprises a system interface, one interface circuit, one register and a read-write control interface, this flexible circuit board is electrically connected with this system interface, this register is electrically connected with this system interface and this interface circuit, wherein this flexible circuit board is controlled the read-write state of this register via this read-write control interface, this flexible circuit board writes digital signal via this system interface to this register, this interface circuit reads the interface mode of operation that the digital signal that writes this register is determined this chip for driving, and this flexible circuit board is via this system interface input data signal/control signal to this interface circuit to drive this display panels.
Compared to prior art, the present invention is provided with register in this chip for driving, this flexible circuit board is controlled the reading writing working state of this register, and write the digital signal of determining this chip for driving interface mode of operation at this register by this system interface, simultaneously by this chip for driving of this system interface transmission of data signals/control signal to, share this system interface and transmit this digital signal and this data-signal/control signal simultaneously, make this chip for driving need not design pin separately to receive in order to determine the digital signal of this chip for driving interface mode of operation, this flexible circuit board also saves corresponding pin design simultaneously, reduces the wiring difficulty of this chip for driving thus.In addition,, make the width of this flexible circuit board reduce because number of pins reduces, and then the convenient miniaturization Design that realizes this liquid crystal display module integral body.
Description of drawings
Fig. 1 is a kind of structural representation of prior art liquid crystal display module.
Fig. 2 is the integrated circuit synoptic diagram of chip for driving shown in Figure 1.
Fig. 3 is the structural representation of liquid crystal display module of the present invention.
Fig. 4 is the integrated circuit synoptic diagram of chip for driving shown in Figure 3.
Embodiment
Seeing also Fig. 3, is the structural representation of liquid crystal display module of the present invention.This liquid crystal display module 20 comprises a display panels 200, a chip for driving 210 and a flexible circuit board 270.This chip for driving 210 is pressed together on this display panels 200, and this flexible circuit board 270 is electrically connected with this chip for driving 210.This flexible circuit board 270 comprises an input end 271, a link 272 and many connecting lines 273, and this input end 271 is electrically connected with this link 272 by this connecting line 273, and this link 272 is electrically connected with this chip for driving 210.
, be the integrated circuit synoptic diagram that chip for driving 210 shown in Figure 3 is determined the interface mode of operation please in the lump with reference to Fig. 4.This integrated circuit comprises an interface circuit 230, a sequential control circuit 240, a register 260, a read-write control interface 261 and a system interface 263.This register 260, this interface circuit 230 and this sequential control circuit 240 are electrically connected in regular turn.This read-write control interface 261 is electrically connected with this register 260, and this system interface 263 is electrically connected with this register 260 and this interface circuit 230 simultaneously.
This system interface 263 reaches in order to drive the data or the control signal of display panels in order to the digital signal of determining interface modes in order to be received from these flexible circuit board 270 inputs, and will receive in order to the digital data transmission of determining interface modes to this register 260, data or the control signal in order to drive display panels that receives transferred to this interface circuit 230.Wherein when adopting these system interface 263 these digital signals of transmission, share this pin in order to transmission data or control signal, as transmit tetrad numeral signal, then select four pins in this system interface 263 in order to transmit this tetrad numeral signal.
This read-write control interface 261 is in order to receiving a high level or low level signal, and transmits this signal to this register 260, by the duty of this register 260 of this signal controlling.
This register 260 is read-write apparatus for temporary storage, its reading writing working state switches by the signal of these read-write control interface 261 inputs, set when this read-write control interface 261 receptions one high level, then this register 260 is in the state of can writing, and this system interface 263 writes digital signal to this register 260; When this read-write control interface 261 receptions one low level, then this register 260 is in a read states, and this register 260 is no longer from these system interface 263 receiving digital signals.
This interface circuit 230 comprises one first interface selecting side 231, one second interface selecting side 232, one the 3rd interface selecting side 233, one the 4th interface selecting side 234 and a plurality of data-signal/control signal interface 235.This interface selecting side 231,232,233 and 234 is electrically connected with this register 260, and this data-signal/control signal interface 235 is electrically connected with this system interface 263.Read the digital signal that is stored in this register 260 by this interface selecting side 231,232,233 and 234, and determine the interface mode of operation of this chip for driving 210 according to this digital signal; Under this interface mode of operation, this data-signal/control signal interface 235 is received from the data-signal/control signal of these system interface 263 inputs, and this interface circuit 230 transfers to this sequential control circuit 240 with the data-signal/control signal that receives simultaneously.This sequential control circuit 240 receives this data-signal/control signal and drives this display panels 200.
Seeing also table 2, is the digital signal that receives of this register 260 to chart that should chip for driving interface mode of operation.This chip for driving 210 has multiple alternative interface mode of operation, the corresponding interface mode of operation of each tetrad numeral signal.The signal of supposing these read-write control interface 261 inputs is " IEN ", and this system interface 263 is respectively to the tetrad numeral signal that this register 260 writes: IM0, IM1, IM2, IM3.The interface mode of operation of this chip for driving 210 reaches " IM3 " by " IEN ", " IM0 ", " IM1 ", " IM2 " and unites expression, and itself and this interface mode of operation corresponding relation is as follows:
| IEN (level) | IM?0 | IM?1 | IM?2 | IM?3 | Chip for driving interface mode of operation |
| High level | 0 | 0 | 0 | 0 | 16 interfaces, the 68-system |
| High level | 1 | 0 | 0 | 0 | 8 interfaces, the 68-system |
| High level | 0 | 1 | 0 | 0 | 16 interfaces, the 80-system |
| High level | 1 | 1 | 0 | 0 | 8 interfaces, the 80-system |
| High level | 1 | 0 | 1 | 0 | The continuous number translation interface |
| High level | 0 | 1 | 1 | 0 | Invalid setting |
| High level | 0 | 0 | 0 | 1 | 18 interfaces, the 68-system |
| High level | 1 | 0 | 0 | 1 | 9 interfaces, the 68-system |
| High level | 0 | 1 | 0 | 1 | 18 interfaces, the 80-system |
| High level | 1 | 1 | 0 | 1 | 9 interfaces, the 80-system |
Table 2
The principle of work of determining these chip for driving 210 interface mode of operations is described in the following example:
At first, this flexible circuit board 270 transmits a high level to this register 260 via this read-write control interface 261, make this register 260 be in the state of to write, this system interface 263 writes tetrad numeral signal to this register 260, reach " 0 " as " 0 ", " 1 ", " 0 ", this flexible circuit board 270 transmits a low level signal to this register 260 again via this read-write control interface 261 afterwards, makes this register 260 be in readable state;
Then, this interface circuit 230 reads the tetrad numeral signal " 0 ", " 1 ", " 0 " that write this register 260 by this interface selecting side 231,232,233 and 234 and reaches " 0 ", and the interface mode of operation of definite this chip for driving 210 is 16 interfaces in view of the above, the 80-system;
Then, this chip for driving 210 is under this interface mode of operation, the data-signal of this interface circuit 230/control signal interface 235 is received from the data-signal/control signal of this flexible circuit board 270 through these system interface 263 inputs, and transfers to this sequential control circuit 240 to drive this display panels 200.
Compared to prior art, in this liquid crystal display module 20, one register 260 is set in this chip for driving 210, and pass through this and read and write the reading writing working state that control interface 261 is controlled these registers 260, this flexible circuit board 270 not only writes the digital signal of these chip for driving 210 interface mode of operations of control by this system interface 263 to this register 260, and is received from the data-signal/control signal of these flexible circuit board 270 inputs by this system interface 263.When wherein the digital signal of this interface mode of operation is determined in input, share the part pin of this system interface 263, need not design separately in order to transmit the pin of the digital signal of determining this interface mode of operation, reduce the number of pins of these chip for driving 210 system interfaces 263.In flexible circuit board 270, also save simultaneously independent design in order to transmit the pin of the digital signal of determining the interface mode of operation, reduce the wiring complexity of this flexible circuit board 270 and the width of link 272 thus, the convenient miniaturization that realizes this liquid crystal display module 20.
Certainly in this liquid crystal display module 20, when controlling the read-write state of these registers 260, can also set when this read-write control interface 261 receptions one low level by this read-write control interface 261, then this register 260 is in the state of can writing; When this read-write control interface 261 receptions one high level, then this register 260 is in a read states.In addition, the number of this interface selecting side can be set according to the digital signal figure place that this chip for driving 210 receives.
Claims (8)
1. liquid crystal display module, it comprises a display panels, one is pressed together on the chip for driving and a flexible circuit board of this display panels, this chip for driving comprises a system interface and an interface circuit, this flexible circuit board is electrically connected with the system interface of this chip for driving, and by this system interface input data signal/control signal to this interface circuit to drive this display panels, it is characterized in that: this liquid crystal display module also comprises a register and a read-write control interface, and this register is electrically connected with this system interface and this interface circuit; This flexible circuit board is controlled the read-write state of this register via this read-write control interface, this flexible circuit board writes digital signal via this system interface to this register, and this interface circuit reads the interface mode of operation that the digital signal that writes this register is determined this chip for driving.
2. liquid crystal display module as claimed in claim 1 is characterized in that: this read-write control interface is imported a high level signal, and this register is in readable state.
3. liquid crystal display module as claimed in claim 2 is characterized in that: this read-write control interface is imported a low level signal, and this register is in the state of can writing.
4. liquid crystal display module as claimed in claim 1 is characterized in that: this read-write control interface is imported a high level signal, and this register is in the state of can writing.
5. liquid crystal display module as claimed in claim 4 is characterized in that: this read-write control interface is imported a low level signal, and this register is in readable state.
6. liquid crystal display module as claimed in claim 1 is characterized in that: this interface circuit comprises four interface selecting sides, and the tetrad numeral signal that writes this register is read in this interface selecting side.
7. liquid crystal display module as claimed in claim 1 is characterized in that: this interface circuit comprises data-signal/control signal interface, and it is in order to receive the data-signal/control signal through this system interface input.
8. liquid crystal display module as claimed in claim 1 is characterized in that: this flexible circuit board comprises an input end, a link and a connecting line, and this input end is electrically connected with this link by this connecting line, and this input end receives external electric signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100646283A CN100543529C (en) | 2006-12-29 | 2006-12-29 | The liquid crystal display module |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100646283A CN100543529C (en) | 2006-12-29 | 2006-12-29 | The liquid crystal display module |
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| Publication Number | Publication Date |
|---|---|
| CN101211034A CN101211034A (en) | 2008-07-02 |
| CN100543529C true CN100543529C (en) | 2009-09-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2006100646283A Expired - Fee Related CN100543529C (en) | 2006-12-29 | 2006-12-29 | The liquid crystal display module |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102237054A (en) * | 2010-05-05 | 2011-11-09 | 河南友利华系统工程有限公司 | Command register type interface module of industrial liquid crystal display |
| CN109637448B (en) * | 2019-01-10 | 2021-01-08 | 芯颖科技有限公司 | PMOLED display module brightness adjusting device, system and method |
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