CN201307201Y - LCD device module - Google Patents
LCD device module Download PDFInfo
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- CN201307201Y CN201307201Y CNU2008201559183U CN200820155918U CN201307201Y CN 201307201 Y CN201307201 Y CN 201307201Y CN U2008201559183 U CNU2008201559183 U CN U2008201559183U CN 200820155918 U CN200820155918 U CN 200820155918U CN 201307201 Y CN201307201 Y CN 201307201Y
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- lcd
- mainboard
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Abstract
An LCD device module is characterized in that a main board connection section connected with a main board is connected with a time control section through a first resistor; the time control section is connected with an LCD connection section through a second resistor; a gamma power section is connected with the LCD connection section through a third resistor; the main board connection section is connected with a DC/DC voltage converter through a fuse; a base panel fixing hole for connecting an LCD Panel and a TCP panel is earthed through a high-frequency filter device; and the main board connection section is earthed through a variable resistor from the fuse. The LCD device module has the advantage that electrostatic charges inflowing from the LCD panel are converted to an acceptable voltage of the main board when being transmitted to the main board through the base panel fixing hole, thereby achieving high resistance to high-voltage electrostatic charges without forming or appending an additional electrostatic discharge paths.
Description
Technical field
The utility model relates to a kind of liquid crystal display device module, particularly a kind of liquid crystal display device module with high pressure resistant static.
Background technology
According to the technological development of successional booming semiconductor industry recently, the liquid crystal indicator development trend is miniaturization, in light, and have and more strengthens performance.Up to now in information display device widely used CRT (cathode ray tube, cathode-ray tube (CRT)) though in performance and have advantage in price, miniaturization and portable aspect have shortcoming.
In contrast, liquid crystal indicator has advantages such as miniaturization, lightness, low power consumption, and quilt is attracted attention is the means of alternative CRT shortcoming, and actual installation is in needing nearly all messaging device of display device.
So liquid crystal indicator is generally to apply voltage in the specific molecular of liquid crystal is arranged, become other molecules align, and coming the optical properties such as multiple refractivity, optical activity, bitintability and light characteristic at random of luminous liquid crystal monomer to be converted to visible change according to molecules align so, is the display device of utilizing according to the adjusting of the light of liquid crystal monomer.
In order to ensure competitiveness of product,, various structures have been developed in order to reach miniaturization and lightness.One of them is stacked combining optical element-backlight assembly on the display panel of applying array substrate and colored filter substrate; and for this is protected; be inserted within main the support, and use hood and lower machine cover comes combination, make a LCD MODULE.
In addition, apply the PCB of signal on grid board (GATE PAD) that forms at the edge of above-mentioned display panel and the database (DATA PAD), TCP (Taped CarrierPackage) by the applying drive IC connects with flexible cord, and is the displayed map of existing liquid crystal display device module parts attached to the main back view 1 that supports of liquid crystal indicator.
As shown in Figure 1, in the display panel 5 of the liquid crystal indicator that the colored filter substrate that the array substrate that a plurality of pixels form with matrix shape and R, G, B colored filter form with matrix shape is fitted, the backlight assembly lamination also is housed within main the support.
On the edge of above-mentioned display panel 5 one sides, apply grid board and the grid TCP of the grid PCB7 of drive signal, connect by flexible cord across display panel 5.
In addition, the flexible cord intermediate configurations of above-mentioned grid TCP6a apply the gate driving IC of drive signal to display panel 5 according to certain scan mode.Identical with above-mentioned situation, on the other edge of above-mentioned display panel 5, connected by flexible cord apply simulating signal data PCB9 on the database of aforementioned display device panel 5, at this, adhered to data TCP6b in order to apply signal to display panel 5 according to certain scan mode.
The bottom of above-mentioned display panel 5 is to be furnished with to embody a plurality of optical mirror slips 11 and portrait and radiative backlight 13; The light that sends from above-mentioned backlight is converted to the light guide plate 15 of the planar light of display panel 5 area sizes, reflects the light that above-mentioned light guide plate 145 is revealed, and improves the backlight assembly 10 that the reflecting plate 17 of optical efficiency constitutes and comes attached thereto of lamination.
For above-mentioned backlight assembly 10 of protection and display panel 5 from the impact of outside, insert with the lamination form main the support in 21, in order to prevent moving of above-mentioned display panel 5, adhere to the panel drawing strickle guide 3 of fixing above-mentioned display panel in addition.
Above-mentioned main to support 21 are the situations that are divided into metal material or plastic material, and above-mentioned display panel 5 and backlight assembly 10 are that the form with lamination is inserted in above-mentioned main the support, and above-mentioned panel drawing strickle guide 3 is combined in the above-mentioned main support 21.Then, use hood 1 and lower machine cover and assemble the above-mentioned main support 21 of accommodating above-mentioned panel drawing strickle guide 3 and above-mentioned backlight assembly 10, use but only assemble hood 1 for the purpose that reaches miniaturization.
As mentioned above, remove lower machine cover and, support 21 and adhere to protective cover, and protective cover and above-mentioned PCB (7,9) are electrically connected main in the main basal plane problem that supports the 21 spine folded and PCB (7,9) that adhere to.
As mentioned above, finish liquid crystal display device module after, carry out the static discharge inspection.
Above-mentioned static discharge inspection be to each driving circuit and source driving circuit and gate driver circuit carry out about about 10 times+/-the discharge inspection of 12V static, under the common situation, this will look into the necessary condition that belongs to normal inspection, but, do the more static discharge inspection of high level in the situation of the LCD of specific purposes module.
For example, the employed LCD module in the gambling house of the U.S. (comprising the electronic game facility) is as the key factor that produces static in the gambling house environment, therefore require+/-the above electrostatic discharge performance of 20KV, for this reason, LCD module manufacturing enterprise is by the whole bag of tricks, meets the product effort of affiliated standard for production.
Its representation example is to use: utilize iron hood to make whole casing, and to the rapid ground connection of static that applies from the outside, the method for protection inner structure; Cover panel drawing strickle guide 3 peripheries with Copper Foil, the static that applies from the outside by Copper Foil directed outwards and ground connection, is protected internal drive circuits.
Above-mentioned is to use as the internal circuit stabilization of higher relatively static mostly, in fact, first mode of utilizing iron hood is that stability is very high, and the most practical scheme, but because whole casing is made of ferrous material, thereby cost height, and external problems such as electrostatic discharge performance such as limitation of design.
And; the 2nd mode utilizing Copper Foil to embody shielding protection compared with the 1st mode; have to save and produce the unit price cost; and can be suitable for the advantage of various designs flexibly; electrostatic discharge performance descends, and different with original circuit structure but comparatively speaking; need to be equipped with the lead-in wire that connects Copper Foil and external ground, therefore have the problem that is difficult to carry out the winding displacement processing.
Moreover; the 2nd mode utilizing Copper Foil to embody shielding protection is when the lead short circuit of connection Copper Foil and external ground takes place; Copper Foil with shielding static function can play charged electrostatically function on the contrary; become the former of the higher static of generation thereby serious internal circuit damage may take place, thereby reliability can reduce.
The utility model content
Technical matters of the present utility model is will provide a kind of need not form or append other electrostatic discharging path, eliminates the liquid crystal display device module of static in inside.
In order to solve above technical matters, the utility model provides a kind of liquid crystal display device module, comprises the display panel of liquid crystal indicator; Main support the in backlight assembly is layered in; With the above-mentioned main panel drawing strickle guide that supports combination; For realizing that at liquid crystal indicator the mainboard of control signal and data takes place image; Carry out data integration and synchronous TCP plate between above-mentioned mainboard and the display panel; For protecting the top and the bottom hood of above-mentioned combination; Wherein: the mainboard connecting portion that is connected with mainboard, by the first resistance tie-time control part, the time control part connects the LCD connecting portion by second resistance, the gamma power supply unit connects the LCD connecting portion by the 3rd resistance, the mainboard connecting portion also connects the DC/DC converter by fuse, the substrate fixed orifice that the LCD panel is connected with the TCP plate, by High frequency filter device ground connection, the mainboard connecting portion passes through a variable resistor ground connection behind fuse.
Described High frequency filter device is a bead core.
The specification of described bead core is 600 Europe/100MHz.
Described variable resistor is a voltage dependent resistor (VDR).
The critical voltage of described voltage dependent resistor (VDR) is 5V.
Described first resistance is that impedance is 330 ohm.
Described TCP plate is: control the LCD module comprehensively and transmit the mainboard connecting portion that the mainboard of image information and various control signals is connected in order to drive the LCD panel; Receive the fuse of the driving voltage that flows into by above-mentioned mainboard connecting portion; Voltage by above-mentioned fuse input drives, and by above-mentioned mainboard connecting portion, receives data, and carries out the time control part of synchronous processing output; Provide the data between above-mentioned mainboard connecting portion and the time control part to transmit first resistance of impedance; The voltage that reception is imported by above-mentioned fuse, changing voltage provides the DC/DC converter of LCD panel driving voltage; Receive voltage, according to the gamma voltage portion of gamma signal generation voltage by above-mentioned fuse input; The LCD connecting portion that the driving voltage of the signal of above-mentioned gamma voltage portion and time control part output and the output of above-mentioned DC/DC converter is provided to the LCD panel; Provide the data between above-mentioned time control part and the LCD connecting portion to transmit second resistance of impedance; The 3rd resistance of data transmission impedance between above-mentioned gamma voltage portion and the LCD connecting portion is provided; Connect between above-mentioned fuse one end and the ground connection, and reach certain reference value when above, be reduced to the voltage dependent resistor (VDR) of the following voltage of certain reference value at the voltage that the terminals of above-mentioned fuse apply; Electric means connects the earth terminal in substrate fixed orifice periphery metal form and the plate, is retained in the bead core that the interior high-frequency signal of metal form of aforesaid substrate fixed orifice periphery filters and eliminates.
The specification of described bead core is 600 Europe/100MHz.
Described resistance is connected with the data transfer path of above-mentioned mainboard interface, and the impedance of each resistance is 330 ohm.
Superior effect of the present utility model is: the static that the LCD panel flows into passes through the substrate fixed orifice in the process that transmits to mainboard, reducing to the voltage that mainboard can bear transmits, need not form or append under the situation of other electrostatic discharging path, have the liquid crystal display device module of high pressure resistant static.
Description of drawings
Fig. 1 is the structural representation of existing liquid crystal display device module;
Fig. 2 is the structural representation of existing TCP plate;
Fig. 3 is the TCP plate structure synoptic diagram that the utility model is applicable to liquid crystal indicator;
The number in the figure explanation
60-TCP plate; 61-mainboard connecting portion;
63-time control part; 62,64,67-resistance;
65-DC/DC converter; 66-gamma power supply unit;
68-LCD connecting portion; 69-fuse;
70-voltage dependent resistor (VDR); 71-substrate fixed orifice;
72-bead core.
Embodiment
See also shown in the accompanying drawing, the utility model will be further described.
As shown in Figure 3, the utility model provides a kind of liquid crystal display device module, comprises the display panel of liquid crystal indicator; Main support the in backlight assembly is layered in; With the above-mentioned main panel drawing strickle guide that supports combination; For realizing that at liquid crystal indicator the mainboard of control signal and data takes place image; Carry out data integration and synchronous TCP plate 60 between above-mentioned mainboard and the display panel; For protecting the top and the bottom hood of above-mentioned combination; Wherein: the mainboard connecting portion 61 that is connected with mainboard, by the first resistance tie-time control part 63, time control part 63 connects LCD connecting portion 68 by second resistance, gamma power supply unit 66 connects LCD connecting portion 68 by the 3rd resistance, mainboard connecting portion 61 also connects DC/DC converter 65 by fuse 69, the substrate fixed orifice 71 that the LCD panel is connected with the TCP plate, by High frequency filter device ground connection, mainboard connecting portion 61 passes through a variable resistor ground connection behind fuse 69.
Described High frequency filter device is a bead core 72.
The specification of described bead core is 600 Europe/100MHz.
Described variable resistor is a voltage dependent resistor (VDR).
The critical voltage of described voltage dependent resistor (VDR) is 5V.
Described first resistance is that impedance is 330 ohm.
Described TCP plate 60 is: control the LCD module comprehensively and transmit the mainboard connecting portion 61 that the mainboard of image information and various control signals is connected in order to drive the LCD panel; Receive the fuse 69 of the driving voltage that flows into by above-mentioned mainboard connecting portion 61; Voltage by above-mentioned fuse 69 inputs drives, and by above-mentioned mainboard connecting portion 61, receives data, and carries out the time control part 63 of synchronous processing output; Provide the data between above-mentioned mainboard connecting portion 61 and the time control part 63 to transmit first resistance 62 of impedance; The voltage that reception is imported by above-mentioned fuse 69, changing voltage provides the DC/DC converter 65 of LCD panel driving voltage; Receive voltage, according to the gamma voltage portion 66 of gamma signal generation voltage by above-mentioned fuse input; The LCD connecting portion 65 that the driving voltage of the signal of above-mentioned gamma voltage portion 66 and time control part 63 outputs and 65 outputs of above-mentioned DC/DC converter is provided to the LCD panel; Provide the data between above-mentioned time control part 63 and the LCD connecting portion 68 to transmit second resistance 64 of impedance; The 3rd resistance 67 of data transmission impedance between above-mentioned gamma voltage portion 66 and the LCD connecting portion 68 is provided; Connect between above-mentioned fuse 69 1 ends and the ground connection, and reach certain reference value when above, be reduced to the voltage dependent resistor (VDR) 70 of the following voltage of certain reference value at the voltage that the terminals of above-mentioned fuse 69 apply; Electric means connects the earth terminal in substrate fixed orifice 71 peripheral metal forms and the plate, is retained in the bead core 72 that the interior high-frequency signal of metal form of aforesaid substrate fixed orifice 71 peripheries filters and eliminates.
The specification of described bead core 72 is 600 Europe/100MHz.
Described resistance is connected with the data transfer path of above-mentioned mainboard interface, and the impedance of each resistance is 330 ohm.
At first; check and be applicable to before the technology of the present invention; with reference to figure 1 and Fig. 2; flow into static in the LCD module; and by the process of static generation systems mistake, in the time of then need not preventing classical iron hood or Copper Foil shielding protection, generally speaking; static is the internal circuit that flows into by panel drawing strickle guide 3, and the element that flows into static at first is the TCP plate that is presented at accompanying drawing 2.
Usually, the panel drawing strickle guide 3 of fixing liquid crystal display (LCD) panel closes with a bolted-on attachment with the TCP plate fixed orifice that is presented at accompanying drawing 2, and therefore the static that flows into by panel drawing strickle guide 3 is to flow into the TCP plate by the bolt that connects.
At this moment, normally TCP plate one or both sides form metal form, and at the metal form top soldered elements that forms, therefore form metal form on certain field of above-mentioned substrate fixed orifice periphery, so that the stability when guaranteeing that bolt connects.
Certainly, though so the metal form of substrate fixed orifice periphery does not have to be connected with electric means with the interior metal form of TCP plate, consider that the high pressure on the static characteristic disturbs, and the electric metal form of considering the TCP plate that flows into static exists in very closely, then static is actually the metal form by the certain field of substrate fixed orifice periphery, and flowing into the electric metal bribery of TCP plate template side is very obvious thing.
Thereupon, by each element that shows in the accompanying drawing 2, the mainboard connecting portion side that static flows into, even then the design in loop has one-way, but apply the transient voltage that is equivalent to high pressure conditions to the mainboard side that connects owing to counter electromotive force, and the mainboard of Lian Jieing then can close or reset therewith, causes the damage of mainboard when serious.
Therefore; the utility model is conceived to; as long as can drop to low pressure to the static characteristic that flows into from high pressure; and can become signal to moment impact voltage with certain hour length; it or not to other ground connection of outside but the ground connection guiding that possesses to inside, loop; then not with above-mentioned former iron hood or Copper Foil shielding protection, can be protected yet home loop.
Accompanying drawing 3 is the structural representations that are applicable to according to the TCP plate 60 of liquid crystal real device module of the present utility model, and TCP plate 60 is: control the LCD module comprehensively and transmit the mainboard connecting portion 61 that the mainboard of image information and various control signals is connected in order to drive the LCD panel; Receive the fuse 69 of the driving voltage that flows into by above-mentioned mainboard connecting portion 61; Voltage by above-mentioned fuse 69 inputs drives, and by above-mentioned mainboard connecting portion 61, receives data, and carries out the time control part 63 of synchronous processing output; Provide the data between above-mentioned mainboard connecting portion 61 and the time control part 63 to transmit first resistance 62 of impedance; The voltage that reception is imported by above-mentioned fuse 69, changing voltage provides the DC/DC converter 65 of LCD panel driving voltage; Receive voltage, according to the gamma voltage portion 66 of gamma signal generation voltage by above-mentioned fuse 69 inputs; The LCD connecting portion 65 that the driving voltage of the signal of above-mentioned gamma voltage portion 66 and time control part 63 outputs and 65 outputs of above-mentioned DC/DC converter is provided to LCD panel side; Provide the data between above-mentioned time control part 63 and the LCD connecting portion 68 to transmit second resistance 64 of impedance; The 3rd resistance 67 of data transmission impedance between above-mentioned gamma voltage portion 66 and the LCD connecting portion 68 is provided; Connect between above-mentioned fuse 69 1 ends and the ground connection, and reach certain reference value when above, be reduced to the voltage dependent resistor (VDR) 70 of the following voltage of certain reference value at the voltage that the terminals of above-mentioned fuse 69 apply; Earth terminal in electric means web joint fixed orifice 71 peripheral metal forms and the plate is retained in the bead core 72 that the high-frequency signal in the metal form of above-mentioned plate fixed orifice 71 peripheries filters and subdues.
Static in the TCP plate 60 of liquid crystal display device module prevents function, and static flows into by plate fixed orifice 71.
At this moment, the static of the radio-frequency component that flows into by plate fixed orifice 71 is at first to flow to earth terminal in the TCP plate 60 by bead core 72.
Thereupon, by bead core 72, the part of radio-frequency component will be filtered, and this moment, the impedance of bead core 72 was the specifications that have been suitable for 600 Europe/100MHz.
After this, on the characteristic of static, even the ground connection in TCP plate 60 is side directed, in fact, by the element in the TCP plate 60, have the above voltage of certain value, be the counter electromotive force situation that is to produce by mainboard connecting portion 61 flow to the part that external static electrification causes problem by TCP plate 60.
It is former because static is during by LCD connecting portion 68 outflow, because the voltage of LCD panel itself is high frequency property, even therefore flow into the static of a great deal of, only produce slight float situation, but mainboard is the situation that generation systems crashes or resets, and causes the damage of mainboard when serious.
And on the characteristic of electrostatic induced current, the static that flows into TCP plate 60 all can flow to mainboard connecting portion 61 and LCD connecting portion 68, but because the resistance of LCD panel side is big, is to flow to mainboard connecting portion 61 sides successively.
The path of the static of above-mentioned mainboard connecting portion 61 sides is flowing to path with the feeder ear that is connected with first resistance 62 and fuse 69 as delegated path, so the output terminal at fuse 69 has possessed voltage dependent resistor (VDR) 70 in the utility model.
Above-mentioned voltage dependent resistor (VDR) 70 owing to be that panel voltage is 3.3V, therefore has been suitable for the resistance of 5V, and therefore, when applying static, the resistance of voltage dependent resistor (VDR) 70 sharply increases, and has eliminated the considerable part of counter electromotive force.
And the impedance before above-mentioned first resistance 62 is to use 220 ohm resistive element, and is different therewith, and being to use impedance in the utility model is 330 ohm resistive element.
Thereupon, because counter electromotive force can reduce the electrostatic potential that flows to mainboard side greatly.
According to electrostatic safety countermeasure so, original mode and several trial flock have been carried out data relatively, comparable situation is as shown in table 1 below.
And the test method to this moment has applied identical electrostatic potential repeatedly and has been about 10 times;
| The test electrostatic potential | Copper Foil+lead-in wire using method | General LCD module | The TCP resistance value increases state | The utility model |
| ±10kV | ○ | ○ | ○ | ○ |
| ±20kV | ○ | × | ○ | ○ |
| ±24kV | ○ | × | × | ○ |
| ±30kV | ○ | × | × | ○ |
| Auditing standards | By | Do not pass through | Do not pass through | By |
General LCD module is meant in above-mentioned table 1, shows no sign of to consider preventing countermeasure or removing Copper Foil and the LCD module of lead-in wire state in original Copper Foil shielding protection mode of static.
And the TCP resistance value is the comparative example when being the input resistance in the original TCP plate of accompanying drawing 2 330 ohm resistive element situation instead of the impedance in the utility model.
In the above explanation, the utility model is to carry out diagram and explanation with specific example, but not exceeding in the limit in the thought of the invention in the patent claim and field, can carry out multiple transformation and change the technician in the affiliated technical field, all is conspicuous thing.
Claims (6)
1, a kind of liquid crystal display device module comprises the display panel of liquid crystal indicator; Main support the in backlight assembly is layered in; With the above-mentioned main panel drawing strickle guide that supports combination; For realizing that at liquid crystal indicator the mainboard of control signal and data takes place image; Carry out data integration and synchronous TCP plate between above-mentioned mainboard and the display panel; For protecting the top and the bottom hood of above-mentioned combination; Wherein: the mainboard connecting portion that is connected with mainboard, by the first resistance tie-time control part, the time control part connects the LCD connecting portion by second resistance, the gamma power supply unit connects the LCD connecting portion by the 3rd resistance, the mainboard connecting portion also connects the DC/DC converter by fuse, it is characterized in that:
The substrate fixed orifice that the LCD panel is connected with the TCP plate, by High frequency filter device ground connection, the mainboard connecting portion passes through a variable resistor ground connection behind fuse.
2, by the described liquid crystal display device module of claim 1, it is characterized in that:
Described High frequency filter device is a bead core.
3, by the described liquid crystal display device module of claim 2, it is characterized in that:
The specification of described bead core is 600 Europe/100MHz.
4, by the described liquid crystal display device module of claim 1, it is characterized in that:
Described variable resistor is a voltage dependent resistor (VDR).
5, by the described liquid crystal display device module of claim 1, it is characterized in that:
The critical voltage of described voltage dependent resistor (VDR) is 5V.
6, by the described liquid crystal display device module of claim 1, it is characterized in that:
Described first resistance is that impedance is 330 ohm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201559183U CN201307201Y (en) | 2008-11-25 | 2008-11-25 | LCD device module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201559183U CN201307201Y (en) | 2008-11-25 | 2008-11-25 | LCD device module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201307201Y true CN201307201Y (en) | 2009-09-09 |
Family
ID=41099669
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201559183U Expired - Fee Related CN201307201Y (en) | 2008-11-25 | 2008-11-25 | LCD device module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201307201Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105867038A (en) * | 2016-06-17 | 2016-08-17 | 深圳市华星光电技术有限公司 | Array substrate, manufacturing method of array substrate and liquid crystal display |
-
2008
- 2008-11-25 CN CNU2008201559183U patent/CN201307201Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105867038A (en) * | 2016-06-17 | 2016-08-17 | 深圳市华星光电技术有限公司 | Array substrate, manufacturing method of array substrate and liquid crystal display |
| US10678105B2 (en) | 2016-06-17 | 2020-06-09 | Shenzhen China Star Optoelectronics Technology Co., Ltd | Array substrate and manufacturing method thereof and liquid crystal display apparatus |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090909 Termination date: 20101125 |