CN101995676A - Substrate circuit and liquid crystal display (LCD) system using same - Google Patents
Substrate circuit and liquid crystal display (LCD) system using same Download PDFInfo
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- CN101995676A CN101995676A CN2009101640875A CN200910164087A CN101995676A CN 101995676 A CN101995676 A CN 101995676A CN 2009101640875 A CN2009101640875 A CN 2009101640875A CN 200910164087 A CN200910164087 A CN 200910164087A CN 101995676 A CN101995676 A CN 101995676A
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Abstract
The invention provides a substrate circuit and a liquid crystal display (LCD) system using the same. The substrate circuit comprises a substrate layer, a circuit layer which is arranged on the substrate layer, and a plurality of test contact pad areas, wherein the substrate layer is provided with a plurality of electrode pad areas; the circuit layer comprises an LCD panel drive circuit and a plurality of signal wires; the LCD panel drive circuit is connected with the plurality of electrode pad areas on the substrate layer; the plurality of signal wires are extended to the plurality of electrode pad areas, and are used for connecting with the LCD panel drive circuit and transmitting signals when the LCD panel performs the display; and the plurality of test contact pad areas are respectively arranged on the plurality of signal wires. The substrate circuit and the LCD system using the same of the invention have lower cost and smaller impedance of the signal wires.
Description
Technical field
The present invention relates to a kind of circuit, relate in particular to a kind of substrate circuit and use the liquid crystal display systems of this substrate circuit.
Background technology
Continuous development along with electronic technology, at present, LCD (Liquid Crystl Display, LCD) because have the little and lightweight advantage of volume, gradually, replace the comparatively huge cathode-ray tube of traditional volume (Cathode Ray Tube, CRT), and then used by society at large, be widely used in electronic products such as monitor, notebook computer, digital camera and projector especially.The LCD module generally comprises a LCD panel, a module backlight and a printed circuit board (PCB) (PCB).
Wherein, the LCD panel has a driving semi-conductor chip usually.In the prior art, the installation method of described driving semi-conductor chip has TAB (tape automated bonding, adhesive tape sticks together automatically) technology and COG (chip-on-glass, glass carries chip) technology usually.The TAB technology is that the driving semi-conductor chip is placed on the TAB adhesive tape, and this adhesive tape links with the electronic pads district that is formed on the LCD panel more then.The COG technology is to link driving semi-conductor chip electronic pads district direct and the LCD panel.The latter has the advantage of reduced size and lower cost compared with the former.
Simultaneously, also have GOA (Gate Driver on Array, gate driver circuit is produced on the array base palte) technology and WOA (Wire on Array, wire producing is on array base palte) technology.The GOA The Application of Technology can reduce the production technology program, reduces product technology cost, improves the high integration of TFT-LCD panel.In the GOA design, when scanning drive chip adopts the COG framework, utilize the WOA technology that adjacent chip is connected.
See also in the GOA design shown in Figure 1, general, the substrate circuit 100 of LCD system comprises a substrate layer 110, is located at the some chip for driving 120 on this substrate layer 110, a plurality of electronic padses district 130 and some WOA signal wires 131 of described each chip 120 of connection.Every WOA signal wire 131 corresponding chip for driving 120, and the electronic pads district 130 that is connected with this chip for driving 120 electrically connects.For the ease of the circuit of this LCD system 100 is tested, on corresponding each chip for driving 120 at least one test pin 140 and a unit testing contact mat district 141 need be set in addition on the substrate layer 110.Wherein, described a plurality of electronic padses district 130 and at least one test pin 140 are set up in parallel.Each unit testing contact mat district 141 corresponding chip for driving 120, and be connected with test pin 140 that this chip for driving 120 is extended, so that test.
Yet, when WOA signal wire quantity more for a long time, the quantity of test pin 140 also can increase thereupon, and causes substrate layer 110 costs too high.Simultaneously, because the setting of test pin 140, pin and electronic pads district quantity that substrate layer 110 is provided with are more, adding unit testing contact mat district 141 also will take up room, thereby make the wiring space of WOA signal wire less, be difficult to avoid impedance because of the WOA signal wire the entire circuit Effect on Performance.
Summary of the invention
The objective of the invention is to, a kind of substrate circuit is provided, can effectively reduce cost and reduce the impedance of WOA signal wire.
In addition, also provide a kind of liquid crystal display systems with this substrate circuit.
The object of the invention to solve the technical problems is to adopt following technical scheme to realize.
A kind of substrate circuit, it comprises a substrate layer and is located at a circuit layer on this substrate layer that this substrate layer is provided with a plurality of electronic padses district.This circuit layer comprises liquid crystal display panel drive circuit and many signal line, described liquid crystal display panel drive circuit is connected in a plurality of electronic padses district that is provided with on the substrate layer, and these many signal line extend described a plurality of electronic padses district and are used to connect described liquid crystal display panel drive circuit and transmission signals when display panels shows.Described substrate circuit also comprises a plurality of test contact mats district, and this a plurality of test contact mats district is arranged on respectively on these many signal line.
In the aforesaid substrate circuit, described substrate layer is a glass substrate.
In the aforesaid substrate circuit, described substrate layer also can be an insulation film.
In the aforesaid substrate circuit, described circuit layer is a flexible printed circuit board.
In the aforesaid substrate circuit, described liquid crystal display panel drive circuit comprises a plurality of display panels chip for driving, the corresponding chip for driving of every signal line, and extend by the electronic pads district that this chip for driving connects and to form; Each corresponding chip for driving in test contact mat district, and the electronic pads district that the signal wire that connects by this test contact mat district is connected with this chip for driving is connected.
In the aforesaid substrate circuit, described test contact mat district is by offering a window on its signal lines, exposes a part of conduction region of this signal wire and forms.
In the aforesaid substrate circuit, described test contact mat district is by establishing conducting film on its signal lines, and this conducting film contacts and electrically connects with this signal wire.
Described substrate circuit will be tested the contact mat district and be located on the signal wire, thereby need not can reduce the width and the materials amount of substrate layer, thereby reduce the cost of substrate circuit for test contact mat district additional dedicated is provided with pin.Simultaneously,, increased the wiring region domain space of signal wire, can reduce the impedance of signal wire, thereby improve the performance of entire circuit because it is less that pin is set.
A kind of liquid crystal display systems comprises a substrate layer and is located at a circuit layer on this substrate layer.This substrate layer is provided with a plurality of electronic padses district.This circuit layer comprises a plurality of display panels chip for driving and many signal line.Described a plurality of display panels chip for driving is connected in a plurality of electronic padses district that is provided with on the substrate layer, and these many signal line extend described a plurality of electronic padses district and are used to connect described a plurality of display panels chip for driving and transmission signals when display panels shows.Described substrate circuit also comprises a plurality of test contact mats district, and this a plurality of test contact mats district is arranged on respectively on these many signal line.
In the above-mentioned liquid crystal display systems, described substrate layer is a glass substrate or an insulation film.
In the above-mentioned liquid crystal display systems, described circuit layer is a flexible printed circuit board.
Above-mentioned liquid crystal display systems is implemented in the electronic installation, and this electronic installation comprises: a described display panel and an input media, this input media couples this display panel, in order to provide described video signal to this display panel, makes this display panel be play this video signal.Described electronic installation is a mobile phone, a digital camera, a personal digital assistant, a notebook computer, a TV, a vehicle-mounted screen or a portable media player.
Described liquid crystal display systems is located at the test contact mat district of substrate circuit on the signal wire, thereby need not can reduce the width and the materials amount of substrate layer, thereby reduce the cost of substrate circuit for test contact mat district additional dedicated is provided with pin.Simultaneously,, increased the wiring region domain space of signal wire, can reduce the impedance of signal wire, thereby improve the performance of whole liquid crystal display systems circuit because it is less that pin is set.
Above-mentioned explanation only is the general introduction of technical solution of the present invention, for can clearer understanding technological means of the present invention, and can be implemented according to the content of instructions, and for above-mentioned and other purposes, feature and advantage of the present invention can be become apparent, below especially exemplified by preferred embodiment, and conjunction with figs., be described in detail as follows.
Description of drawings
Fig. 1 is the wiring frame composition of substrate circuit of the prior art.
Fig. 2 is the Organization Chart of the better embodiment of substrate circuit of the present invention.
100,200: substrate circuit 110,210: substrate layer
120,220: chip for driving 130,230: electronic pads district
131, the 231:WOA signal wire 140: test pin
141,241: test contact mat district
Embodiment
Reach technological means and the effect that predetermined goal of the invention is taked for further setting forth the present invention, below in conjunction with accompanying drawing and preferred embodiment, module backlight that foundation the present invention is proposed and the liquid crystal display module that uses this module backlight, its embodiment, structure, feature and effect thereof, describe in detail as after.
See also shown in Figure 2ly, a preferred embodiment of substrate circuit 200 of the present invention is applied to a liquid crystal display systems, and it comprises a substrate layer 210 and is located at circuit layer (figure is mark) on this substrate layer 210.This substrate layer 210 is provided with a plurality of electronic padses district 230.This circuit layer comprises some chip for driving 220, the some WOA signal wires of being located on this substrate layer 210 231 and is located at some test contact mats district 241 on these some WOA signal wires 231.Described some chip for driving 220 are electrically connected with described a plurality of electronic padses district 230.Wherein, every WOA signal wire 231 corresponding chip for driving 220, and extend by the electronic pads district 230 that this chip for driving 220 connects and to form.These many WOA signal wires 231 are used to connect described some chip for driving 220 and transmission signals when display panels shows.Described each test contact mat district 241 corresponding chip for driving 220, and be connected with the electronic pads district 230 that this chip for driving 220 is connected by the WOA signal wire 231 of its connection, so that test.This test contact mat district 241 can be by offering a window on its corresponding WOA signal wire 231, expose a part of conduction region of this WOA signal wire 231 and form.This test contact mat district 241 also can contact and electrically connect with this WOA signal wire 231 by establish conducting film on its corresponding WOA signal wire 231.
Wherein, described substrate layer is a glass substrate or an insulation film.Described circuit layer can be a flexible printed circuit board (flexible printed circuit, FPC), described some chip for driving 220, a plurality of electronic padses district 230, the some WOA signal wires 231 that are connected with these some chip for driving 220 and some test contact mats district 241 of being located on these some WOA signal wires 231 all can be formed on this flexible printed circuit board.
In addition, the present invention also provides a kind of liquid crystal display systems with aforesaid substrate circuit, and described substrate circuit can be used for the driving circuit and the liquid crystal display systems of this liquid crystal display systems test before is installed.Described liquid crystal display systems is implemented in the electronic installation, this electronic installation comprises: a described liquid crystal display systems and an input media, this input media couples this liquid crystal display systems, in order to provide described video signal to this liquid crystal display systems, makes this liquid crystal display systems be play this video signal.
Described electronic installation is a mobile phone, a digital camera, a personal digital assistant, a notebook computer, a TV, a vehicle-mounted screen or a portable media player.
In sum, the substrate circuit of preferred embodiment of the present invention and the liquid crystal display systems with this substrate circuit will be tested contact mat district 241 and be located on the WOA signal wire 241, thereby need not pin to be set for test contact mat district 241 additional dedicated, can reduce the width and the materials amount of substrate layer 210, thereby reduce the cost of substrate circuit.Simultaneously,, increased the wiring region domain space of WOA signal wire 231, can reduce the impedance of WOA signal wire 231, thereby improve the performance of entire circuit because it is less that pin is set.
The above, it only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, though the present invention discloses as above with preferred embodiment, yet be not in order to limit the present invention, any those skilled in the art, in not breaking away from the technical solution of the present invention scope, when the technology contents that can utilize above-mentioned announcement is made a little change or is modified to the equivalent embodiment of equivalent variations, in every case be not break away from the technical solution of the present invention content, according to technical spirit of the present invention to any simple modification that above embodiment did, equivalent variations and modification all still belong in the scope of technical solution of the present invention.
Claims (12)
1. substrate circuit, it comprises a substrate layer and is located at a circuit layer on this substrate layer, this substrate layer is provided with a plurality of electronic padses district, this circuit layer comprises liquid crystal display panel drive circuit and many signal line, described liquid crystal display panel drive circuit is connected in a plurality of electronic padses district that is provided with on the substrate layer, these many signal line extend described a plurality of electronic padses district and are used to connect described liquid crystal display panel drive circuit and transmission signals when display panels shows, it is characterized in that: described substrate circuit also comprises a plurality of test contact mats district, and this a plurality of test contact mats district is arranged on respectively on these many signal line.
2. substrate circuit according to claim 1 is characterized in that: described substrate layer is a glass substrate.
3. substrate circuit according to claim 1 is characterized in that: described substrate layer is an insulation film.
4. substrate circuit according to claim 1 is characterized in that: described circuit layer is a flexible printed circuit board.
5. substrate circuit according to claim 1, it is characterized in that: described liquid crystal display panel drive circuit comprises a plurality of display panels chip for driving, the corresponding chip for driving of every signal line, and extend by the electronic pads district that this chip for driving connects and to form; Each corresponding chip for driving in test contact mat district, and the electronic pads district that the signal wire that connects by this test contact mat district is connected with this chip for driving is connected.
6. substrate circuit according to claim 1 is characterized in that: described test contact mat district is by offering a window on its signal lines, exposes a part of conduction region of this signal wire and forms.
7. substrate circuit according to claim 1 is characterized in that: described test contact mat district is by establishing conducting film on its signal lines, this conducting film contacts and electrically connects with this signal wire.
8. liquid crystal display systems, comprise a substrate layer and be located at a circuit layer on this substrate layer, this substrate layer is provided with a plurality of electronic padses district, this circuit layer comprises a plurality of display panels chip for driving and many signal line, described a plurality of display panels chip for driving is connected in a plurality of electronic padses district that is provided with on the substrate layer, these many signal line extend described a plurality of electronic padses district and are used to connect described a plurality of display panels chip for driving and transmission signals when display panels shows, it is characterized in that: described substrate circuit also comprises a plurality of test contact mats district, and this a plurality of test contact mats district is arranged on respectively on these many signal line.
9. liquid crystal display systems according to claim 8 is characterized in that: described substrate layer is a glass substrate or an insulation film.
10. liquid crystal display systems according to claim 8 is characterized in that: described circuit layer is a flexible printed circuit board.
11. liquid crystal display systems according to claim 8, it is characterized in that: this liquid crystal display systems is implemented in the electronic installation, this electronic installation comprises: a described display panel and an input media, this input media couples this display panel, in order to provide described video signal, make this display panel be play this video signal to this display panel.
12. liquid crystal display systems according to claim 11 is characterized in that: described electronic installation is a mobile phone, a digital camera, a personal digital assistant, a notebook computer, a TV, a vehicle-mounted screen or a portable media player.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101640875A CN101995676A (en) | 2009-08-10 | 2009-08-10 | Substrate circuit and liquid crystal display (LCD) system using same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101640875A CN101995676A (en) | 2009-08-10 | 2009-08-10 | Substrate circuit and liquid crystal display (LCD) system using same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101995676A true CN101995676A (en) | 2011-03-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101640875A Pending CN101995676A (en) | 2009-08-10 | 2009-08-10 | Substrate circuit and liquid crystal display (LCD) system using same |
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| CN (1) | CN101995676A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106057109A (en) * | 2016-08-03 | 2016-10-26 | 武汉华星光电技术有限公司 | Display device and display panel thereof |
| CN106611588A (en) * | 2015-10-23 | 2017-05-03 | 瑞鼎科技股份有限公司 | Driving circuit applied to liquid crystal display device |
| US20220317531A1 (en) * | 2021-03-31 | 2022-10-06 | Japan Display Inc. | Light adjustment device |
-
2009
- 2009-08-10 CN CN2009101640875A patent/CN101995676A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106611588A (en) * | 2015-10-23 | 2017-05-03 | 瑞鼎科技股份有限公司 | Driving circuit applied to liquid crystal display device |
| CN106057109A (en) * | 2016-08-03 | 2016-10-26 | 武汉华星光电技术有限公司 | Display device and display panel thereof |
| CN106057109B (en) * | 2016-08-03 | 2019-04-02 | 武汉华星光电技术有限公司 | A kind of display device and its display panel |
| US20220317531A1 (en) * | 2021-03-31 | 2022-10-06 | Japan Display Inc. | Light adjustment device |
| US11656516B2 (en) * | 2021-03-31 | 2023-05-23 | Japan Display Inc. | Light adjustment device |
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Application publication date: 20110330 |