CN1683977A - Display device - Google Patents
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- CN1683977A CN1683977A CN 200410032720 CN200410032720A CN1683977A CN 1683977 A CN1683977 A CN 1683977A CN 200410032720 CN200410032720 CN 200410032720 CN 200410032720 A CN200410032720 A CN 200410032720A CN 1683977 A CN1683977 A CN 1683977A
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- display device
- interposer substrate
- driving circuit
- conductive path
- driving
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Abstract
The display device with low cost and high performance includes mainly one liquid crystal module, one switching base board, at least one drive circuit and several conducting contact points. The liquid crystal module includes at least one liquid crystal layer and one transparent electrode and is matched with the pixel electrodes in the upper surface of the switching base board to display figures. The pixel electrodes are connected to the preset positions in the lower surface of the switching base board through at least one conducting path and then connected to the drive transistor in the drive circuit through the conducting contact points. The present invention has the advantages of active display panel, increased lighting area, raised product performance, high reliability and lowered making cost.
Description
Technical field
The present invention relates to a kind of display device, particularly a kind of cost of manufacture that reduces, the display device of raising product usefulness.Mainly be to utilize an interposer substrate to be situated between to connect driving circuit and Liquid Crystal Module or organic module, the characteristic that can possess the active display panel, and raising product percent of pass and reducing production costs.
Background technology
In recent years, because the high development of information industry and people to the psychology of every product seeking change and innovation, make the dealer constantly pursue day a large amount of mental and physical efforts of input in the product development.Aspect display, because the easy display of liquid has light with thin development potentiality, and has the low-power consumption advantage, in dealer's exploitation, diversified product has also attracted the popular sight of consumption.
Seeing also Fig. 1, is the part section organigram of the easy display panel of known TFT liquid.Mainly be on a glass substrate 10, to form plurality of films transistor 14 and storage capacitors 15, on thin film transistor (TFT) 14 and storage capacitors 15, cover an interlayer dielectric film 11, form plurality of pixel electrodes 12 more thereon, each pixel electrode 12 utilizes a contact hole 113 and thin film transistor (TFT) 14 and storage capacitors 15 to obtain electric connection respectively, then is liquid crystal layer 13, transparency electrode 123 and transparency carrier 17 in regular turn on the pixel electrode 12.
The pixel formation level synoptic diagram of contrast Fig. 2 knows that the source electrode 143 of this thin film transistor (TFT) 14 connects data line 16 longitudinally, and gate electrode 141 connects horizontal grid lead (sweep trace) 18, and drain electrode 143 then connects storage capacitors 15 and pixel electrode 12.Wherein, data line 16 and grid lead 18 are interlaced and be shaped as pixel region, and except the scope of thin film transistor (TFT) 14, pixel electrode 12 roughly covers whole pixel region, but fluid,matching crystal layer and transparency electrode and display graphics.
Utilize above-mentioned structure, cooperate backlight module and other optical thin films, can make display device have wide view angle, high brightness and the advantage of low-response time, and help the making of large scale display device.
Make the array circuit of thin film transistor (TFT) on glass substrate, its technological requirement and semiconducter IC technology are similar, and process is also rather complicated, and its apparatus and process cost of investment is also quite expensive certainly.Yet the current driving ability of the thin film transistor (TFT) of amorphous silicon and other electric characteristics all are nothing like the transistor that semiconductor technology, monocrystalline silicon technology and polysilicon process are made.In addition, in the above-mentioned structure, a display capabilities is not had in the shared zone of thin film transistor (TFT) in each pixel region, also makes the integral body of device show usefulness discount to some extent.
Summary of the invention
In view of this, fundamental purpose of the present invention is to provide a kind of display device, it mainly utilizes an interposer substrate to be situated between and connects driving circuit and Liquid Crystal Module, the driving circuit of display device and Liquid Crystal Module can be made respectively, gives combination again, can improve production qualification rate and fiduciary level in a large number.
Secondary objective of the present invention is to provide a kind of display device, and its liquid crystal process can be separated with the semiconductor technology of chip for driving, can significantly reduce cost of manufacture.
Another purpose of the present invention is to provide a kind of display device, and its pixel electrode and driving transistors are to separate to be provided with and to be connected with conductive path, can possess the advantage of active display panel and strengthen effective display area.
Another purpose of the present invention is to provide a kind of display device, and its interposer substrate and conductive path can be made of transparent material, and the interposer substrate lower surface is made as a diffusing surface, can be in order to leaded light, and can cooperate light-emitting component and form backlight module.
Another purpose of the present invention is to provide a kind of display device, and its interposer substrate and conductive path can be made of the flexible material, can form a flexible type display panel.
Another purpose of the present invention is to provide a kind of display device, and its conductive path can a patterned circuit be forwarded to the amount place, default position of base lower surface with pixel electrode, is connected with chip for driving again, can be beneficial to the making of large size panel.
Another purpose of the present invention is to provide a kind of display device, and its structure also can apply to organic electroluminescence display device, can simplify technology, improve the production qualification rate and reduce production costs.
Description of drawings
Figure 1A is the part section organigram of known TFT display panels;
Figure 1B is the pixel formation level synoptic diagram of known TFT display panels;
Fig. 2 is the partial cutaway schematic of a preferred embodiment of the present invention;
Fig. 3 is the partial cutaway schematic of interposer substrate of the present invention;
Fig. 4 is the partial cutaway schematic of embodiment chip for driving as shown in Figure 2;
Fig. 5 is the partial cutaway schematic of another enforcement aspect of interposer substrate of the present invention;
Fig. 6 is the partial cutaway schematic of another embodiment of the present invention;
Fig. 7 A is respectively the circuit diagram of different aspects embodiment illustrated in fig. 6 with Fig. 7 B.
10 glass substrates, 11 interlayer dielectrics
113 contact holes, 12 pixel electrodes
123 transparency electrodes, 13 liquid crystal layers
44 thin film transistor (TFT)s, 141 gate electrodes
143 source electrodes, 146 drain electrodes
15 storage capacitors, 16 data lines
17 transparency carriers, 18 grid leads
20 interposer substrate, 201 pixel electrodes
203 conductive paths, 205 conductive junction points
207 base lower surfaces, 24 Liquid Crystal Modules
241 liquid are layer 243 first oriented films
245 second oriented films, 246 protective seams
247 transparency electrodes, 248 polarizing layers
249 transparency carriers
30 chip for driving, 32 silicon substrates
341 drain electrodes of 34 driving transistorss
343 grids, 346 source electrodes
36 storage capacitors, 38 insulation courses
381 contact holes, 383 metal wires
385 metal wires, 387 insulation courses
40 interposer substrate, 403 conductive paths
407 base lower surfaces, 408 protective seams
409 P.e.c.
50 organic module 52 chip for driving
521 driving transistorss, 523 transistors
525 electric capacity, 54 organic pixels
541 insulation materials, 543 transparency electrodes
545 protective seams, 56 transparency carriers
57 data lines, 58 grid leads
Embodiment
For making the auditor to feature of the present invention, structure, method and the effect that produced further understanding and understanding be arranged, assistant describes in detail with preferred embodiment and accompanying drawing.
At first, seeing also Fig. 2 to Fig. 4, is respectively the partial cutaway schematic of a preferred embodiment of the present invention, the partial cutaway schematic of interposer substrate and the partial cutaway schematic of chip for driving.As shown in the figure, consist predominantly of a Liquid Crystal Module 24, an interposer substrate 20 and an one drive circuit.Wherein, the upper surface of this interposer substrate 20 is provided with plurality of pixel electrodes 201.Be provided with a protective seam 246, one first oriented film 243, a liquid crystal layer 241, one second oriented film 245, a transparency electrode 247, a transparency carrier 249 and a polarizing layer 248 on the pixel electrode 201 successively, constitute a Liquid Crystal Module 24.Be provided with plural conductive path 203 in the interposer substrate 20, can make each pixel electrode 201 be transferred to the predeterminated position of interposer substrate lower surface 207 respectively with a conductive path 203.Wherein, this interposer substrate 20 can semiconductor technology be made, and makes each conductive path 203 be formed at substrate inside, and the one end then protrudes from interposer substrate lower surface 207 and forms a conductive junction point 205.
Driving circuit then can semiconductor technology be integrated in the chip for driving 30.At first on a silicon substrate 32, form plural groups driving transistors 34 and storage capacitors 36 respectively, on each element, cover an insulation course 38 afterwards.Form the conductive path of planning on the surface of insulation course 38 with conductive material (as metal), as metal wire 383 and 386, each metal wire is forwarded on drain electrode 341, source electrode 345 and the storage capacitors 36 of driving transistors 34 with contact hole 381 respectively.Still can cover an insulation course 387 on the metal wire, and leave a breach at the predeterminated position of metal wire 385, can be for doing electric connection with conductive junction point 205.Wherein, the metal wire 383 that connects drain electrode 341 is data line, and grid 343 then is connected to grid lead (not shown).In the above-mentioned driving circuit, also can only drive a pixel electrode 201 and storage capacitors is not set with a driving transistors 34, can be as the liquid crystal indicator of another aspect.
Each is organized driving transistors 34 and is connected to each pixel electrode 201 through metal wire 385 through conductive junction point 205 and conductive path 203 with storage capacitors 36, can form the pixel electrode array of an active driving.The driving of fluid,matching crystal module 24 and data line and grid lead and other optical modules (as backlight module or other optical thin films) can have wide view angle, high brightness and the excellence of low-response time and show usefulness.
In above-mentioned structure,, then can form a dynamical reflective LCD device if make pixel electrode 201 with material (as metal) with light reflective; Make pixel electrode 201 and conductive path 203 if utilize the electrically conducting transparent material respectively, and interposer substrate 20 is also made with transparent village matter, and the lower surface 207 of interposer substrate carried out optics or metal coating or other surface treatments, make it to form a diffusing surface, then light-emitting component can be cooperated and leaded light becomes a transmission liquid crystal display device.
Seeing also Fig. 5, is the partial cutaway schematic of another true aspect of interposer substrate of the present invention.As shown in the figure, this interposer substrate 30 can be provided with a perforation in the position of each pixel electrode 201, inserts conduction village matter again in each perforation, makes it to form conductive path 403.Form a patterned circuit 409 at this interposer substrate lower surface 407 then, each conductive path 403 is connected to the predeterminated position of interposer substrate lower surface 407, can be respectively be connected with corresponding conductive junction point 205.In addition, still can set up a protective seam 408 and cover this patterned circuit 409, so that protective effect to be provided.
In addition, the material that interposer substrate of the present invention still can its pliability (flexible) is made, and materials such as conductive path then can conducting polymer, electrically conducting transparent material (as ITO) or metal form, and can be beneficial to the making of flexible display panel.Among each embodiment, its conductive junction point 205 can be when making conductive path, makes the one end protrude from the predeterminated position of interposer substrate lower surface and form; Also can be when making chip for driving, make the metal wire 205 of the source electrode 345 that connects driving transistors 34 and storage capacitors 36 protrude from the chip for driving upper surface and form.
In the driving circuit of the present invention, except that being provided with driving transistors 34 and storage capacitors 36, still can include the turntable driving electricity network that drives the grid lead, the (not shown)s such as data drive circuit, Digital System Processor, microprocessor, storer and other control circuits of driving data lines, all are circuit integrated in a chip, can improve demonstration usefulness and also effectively reduce production costs.And utilize the switching of conductive path, and driving transistors in the small size chip for driving and storage capacitors can be connected by the pixel electrode to large-area switching base, can be beneficial to the making of large scale display panel.
Seeing also figure, Fig. 7 A and Fig. 7 B, is respectively the circuit diagram of the partial cutaway schematic and the different aspects thereof of another embodiment of the present invention.Structure of the present invention also can apply to the making of organic electroluminescence display device.As shown in the figure, it is mainly constructed and includes an organic module 50, an interposer substrate 20 and an one drive circuit.Wherein, this organic module 50 is to form an organic pixel 54 with electron transfer layer, luminescent layer and electric hole transport layer on each pixel electrode 201 respectively, and each 54 of organic pixel material 541 that can insulate is isolated.Other is provided with the upper surface that a transparency electrode 54 connects each organic pixel 54, covers a protective seam 545 again, then is a transparency carrier 56 topmost.Interposer substrate can be selected as Fig. 3 or structure embodiment illustrated in fig. 5.Driving circuit can semiconductor technology be integrated in the chip for driving 52.This chip for driving is provided with a plurality of driving transistorss 521, respectively is connected to the upper surface of chip for driving 52 with a conductive material (as metal, showing), sees through corresponding conductive junction point 205 respectively and is connected to pixel electrode 201 with conductive path 203.
Same, the interposer substrate of present embodiment can also have flexual material makes, and conductive path then can be selected to form with village's matter such as conducting polymer, electrically conducting transparent material (as ITO) or metals, can be beneficial to the making of flexible display panel.Its conductive junction point 205 can be when making conductive path, makes the one end protrude from the predeterminated position of interposer substrate 20 lower surfaces and form.Also can be when making chip for driving 52, the time connect driving transistors metal wire protrude from the chip for driving upper surface and form.
In this chip for driving 52, except that being provided with a plurality of driving transistorss 521, still can make each driving transistors 521 connect at least one transistor 523 and at least one electric capacity 525, organic pixel 54 is formed various driving aspect, the grid voltage, stable by the electric current of organic pixel 54 and the reaction rate of gain demonstration or the like effect of storage drive transistor 521 can be provided.Can be so as to promoting the demonstration usefulness of organic electroluminescence display device.
In addition, still can include the scan drive circuit of driving grid lead 58 and the (not shown)s such as data drive circuit, Digital System Processor, microprocessor, storer and other control circuit of driving data lines 57 in the chip for driving 52.All are circuit integrated in a chip, can improve demonstration usefulness and also effectively reduce production costs.And utilize the switching of conductive path, and the driving transistors in the chip for driving of small size can be connected to the pixel electrode on the large-area interposer substrate, can be beneficial to the making of large scale display panel.
Structure of the present invention is the design that pixel electrode separates with driving transistors, the face of pixel electrode is maximized slightly, increase its efficient lighting area, strengthen its display effect, the driving circuit of separating then can be made by quite ripe semiconductor technology, monocrystalline silicon technology or polysilicon process, except the advantage that can keep the active display panel and the usefulness that improves driving circuit, still can improve the production qualification rate and reduce cost of manufacture, be a rare ingenious design in fact.
In sum, the present invention is a kind of display device, can reduce cost of manufacture, improves product usefulness.It mainly utilizes an interposer substrate to be situated between and connects driving circuit and Liquid Crystal Module or organic module, the characteristic that can possess the active display panel, and the raising qualified soldier of product and reducing production costs.So the present invention one is rich in novelty, creativeness, and can utilize effect, should meet the patented claim important document, file an application in accordance with the law for industry.
The above is preferred embodiment of the present invention only, is not to be used for limiting scope of the invention process, and all equalizations of being done according to shape of the present invention, structure, feature and spirit change and modify, and all should comprise within the scope of the invention.
Claims (26)
1. display device, it is mainly constructed and includes:
One Liquid Crystal Module includes a liquid crystal layer and a transparency electrode at least;
One interposer substrate, its upper surface is provided with plurality of pixel electrodes, but fluid,matching crystal module and display graphics, each pixel electrode is connected to the predeterminated position of interposer substrate lower surface respectively with a conductive path;
At least one driving circuit respectively includes a plurality of driving transistorss, and each driving transistors is connected to the driving circuit upper surface with a conductive material respectively;
The plural conductive contact is located between each predeterminated position of interposer substrate lower surface and each the driving circuit upper surface conductive material, can make each driving transistors connect pixel electrode by corresponding conductive path respectively.
2. display device according to claim 1 is characterized in that: this driving circuit still comprises a plurality of storage capacitors, respectively with corresponding driving transistors connection.
3. display device according to claim 1 is characterized in that: this interposer substrate and conductive path are made with semiconductor technology.
4. display device according to claim 1 is characterized in that: each conductive path forms the conductive junction point that patterned circuit is connected to predeterminated position at the interposer substrate lower surface again by the straight-through interposer substrate lower surface of pixel electrode.
5. display device according to claim 4 is characterized in that: this patterned circuit still is coated with a protective seam.
6. display device according to claim 1 is characterized in that: this interposer substrate is made with the flexible material.
7. display device according to claim 6 is characterized in that: the conductive path in this interposer substrate can be selected with conducting polymer, electrically conducting transparent material, metal material and knockdown one of them making thereof.
8. display device according to claim 1 is characterized in that: this interposer substrate is made with transparent material, and its lower surface is a diffusing surface, can make the upwards even equal diffusion of light.
9. display device according to claim 8 is characterized in that: the pixel electrode on this interposer substrate is made with the electrically conducting transparent material.
10. display device according to claim 1 is characterized in that: each driving circuit road can be selected to make in wherein a kind of mode of semiconductor technology, monocrystalline silicon technology and polysilicon process.
11. display device according to claim 10 is characterized in that: this driving circuit still can select to be provided with scan drive circuit, data drive circuit, Digital System Processor, microprocessor, storer, other control circuits and knockdown one of them.
12. display device according to claim 1 is characterized in that: this conductive junction point can be selected to be stretched out and formed by one of them of conductive path and driving circuit upper surface conductive material.
13. display device according to claim 1 is characterized in that: the area of this interposer substrate is greater than driving circuit.
14. a display device, it is mainly constructed and comprises:
One interposer substrate, its upper surface is provided with plurality of pixel electrodes, and each pixel electrode is connected to the predeterminated position of interposer substrate lower surface respectively with a conductive path
One organic module, at least include a plurality of organic pixels and a transparency electrode, wherein each organic pixel is formed at respectively on each pixel electrode, inclusion has an electron transfer layer, a luminescent layer and an electric hole transport layer, this transparency electrode connects the upper surface of each organic pixel, can cooperate pixel electrode and display graphics;
At least one driving circuit respectively includes a plurality of driving transistorss, and each driving transistors is connected to the driving circuit upper surface with a conductive material respectively;
The plural conductive contact is located between each predeterminated position of interposer substrate lower surface and each driving circuit, can make each driving transistors connect pixel electrode by corresponding conductive path respectively.
15. display device according to claim 14 is characterized in that: this conductive path is embedded in this interposer substrate.
16. display device according to claim 15 is characterized in that: this interposer substrate and conductive path are made with semiconductor technology.
17. display device according to claim 14 is characterized in that: each conductive path forms the conductive junction point that patterned circuit is connected to predeterminated position at the interposer substrate lower surface again by the straight-through interposer substrate lower surface of pixel electrode.
18. display device according to claim 17 is characterized in that: this patterned circuit still is coated with a protective seam.
19. display device according to claim 14 is characterized in that: this interposer substrate is made with flexible materials.
20. display device according to claim 19 is characterized in that: this conductive path is can select with conducting polymer, electrically conducting transparent material, metal and knockdown one of them making thereof.
21. display device according to claim 14 is characterized in that: this pixel electrode is made with metal material.
22. display device according to claim 14 is characterized in that: each driving circuit can be selected to make in wherein a kind of mode of semiconductor technology, monocrystalline silicon technology and polysilicon process.
23. display device according to claim 14 is characterized in that: each driving transistors still is connected with at least one transistor and at least one electric capacity in this driving circuit, can be so as to increasing the usefulness as display device.
24. display device according to claim 14 is characterized in that: this driving circuit still can select to be provided with scan drive circuit, data drive circuit, Digital System Processor, microprocessor, storer, other control circuits and combined type thereof one of them.
25. display device according to claim 14 is characterized in that: this conductive junction point can be selected to be stretched out and formed by one of them of conductive path and driving circuit upper surface conductive material.
26. display device according to claim 14 is characterized in that: the area of this interposer substrate is greater than driving circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410032720 CN1683977A (en) | 2004-04-16 | 2004-04-16 | Display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410032720 CN1683977A (en) | 2004-04-16 | 2004-04-16 | Display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1683977A true CN1683977A (en) | 2005-10-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410032720 Pending CN1683977A (en) | 2004-04-16 | 2004-04-16 | Display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1683977A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101726874B (en) * | 2008-10-10 | 2011-12-07 | 华映视讯（吴江）有限公司 | Connecting structure for display panel and flexible circuit board |
-
2004
- 2004-04-16 CN CN 200410032720 patent/CN1683977A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101726874B (en) * | 2008-10-10 | 2011-12-07 | 华映视讯（吴江）有限公司 | Connecting structure for display panel and flexible circuit board |
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