CN1410828A - Liquid crystal projection plate - Google Patents

Liquid crystal projection plate Download PDF

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Publication number
CN1410828A
CN1410828A CN 01141960 CN01141960A CN1410828A CN 1410828 A CN1410828 A CN 1410828A CN 01141960 CN01141960 CN 01141960 CN 01141960 A CN01141960 A CN 01141960A CN 1410828 A CN1410828 A CN 1410828A
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CN
China
Prior art keywords
liquid crystal
projection plate
housing
lcd module
upper shell
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Pending
Application number
CN 01141960
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Chinese (zh)
Inventor
徐振强
罗久晨
郑轲
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Individual
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Individual
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Publication date
Application filed by Individual filed Critical Individual
Priority to CN 01141960 priority Critical patent/CN1410828A/en
Publication of CN1410828A publication Critical patent/CN1410828A/en
Pending legal-status Critical Current

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Abstract

The liquid crystal projection plate includes the case, the LCD assembly, the display circuit board the supporting upright column. There is a hole on the center of the case, which is anastomosed with the hole on the LCD assembly. The display circuit board is fixed on the low part inside the case. The dustproof glass plate is installed the back of the LCD assembly. The louvres are on the side wall of the case. The socket of the display circuit board, the transformer and the power switch are positioned at the outer part of the liquid crystal projection plate. The writing glass is set up above the LCD assembly. The thermal insulation polaroid is at the bottom part of the dustproof glass plate. The invention adds the function of the liquid crystal projection plate to the functions of the original projector.

Description

Liquid crystal projection plate
Technical field
The present invention relates to the projector attachment device, the active type of drive of especially a kind of employing colorful film transistor (TFT) is with the color a kind of liquid crystal projection plate that shows of throwing of the graph text information in the multimedia.
Background technology
The projector that traditional top is passed through all be earlier with the content of typing in the computer by printer output, transfer printing is on film then, at last film is placed on Projection Display on the projector, this certainly will cause the complicated and increase raw materials consumption of the course of work, and can only show by single page, show by manual the switching page by page, be difficult to realize colored the demonstration.
In recent years, LCD panel (LCD) is joined within the projector that square tube is crossed traditionally, for prior art is introduced a kind of new purposes.These plate available electron instrument addressing, i.e. the demonstration of final image is by the electronic information control that is transported to this plate.This electronic signal can come from computing machine or can be the standardization vision signal, the device that perhaps comes from other, because the convenience with electronic device generation and stored images is understood by people, so a kind of novel device for image occurs, is commonly referred to " integrated projector ".This device can be obtained input signal from computing machine or other signal source, and with an image projecting on display screen, modern integrated projector even the useful image of projection under the condition of strong ambient light.Summarize wherein several examples below:
No. 4943154 United States Patent (USP) has been pointed out a kind of projector, it has the optical path of three " light valves " (special shape of a kind of LCD that can addressing) and a complexity, this path can be divided into the output of a white light source redness, green and blue component, again carry out projection with these three light microscopics after compound, the manufacturing of this optical system, assembling and maintain all more complicated, and occupy sizable space, and heavier, also have potential efficiency.
Another kind of using method is redness, green and the blue color filter that has single LCD panel (LCD), optical path, lens and insert continuously, when each color filter moves into optical path, upward forms suitable chromatic image in LCD panel (LCD).This device has been subjected to LCD panel (LCD) restriction of the ability of the input signal of response change rapidly.They also need a color filter wheel and relevant therewith hardware that suitably designs.Owing to these reasons, this method seldom is used.
No. 5097323 United States Patent (USP) has been pointed out a kind of projection arrangement, and it adopts Transportation Model LCD ' S (an a kind of color of correspondence) and a kind of three-dimensional optical path (being meant that these optical axises can point in three-dimensional rather than orientation in the two dimension of standard more).This is not a kind of device of saving the space, but can be used for redistributing the purposes in space, so that a kind of littler floor area is provided.Also have a kind of three dichroic liquid crystal display boards (LCD), this plate has an array of the miniature color filter (red, green and blue) that is printed on the display face, and these color filters are by being mounted the suitable addressing of liquid crystal array that is used for they demonstrations.Though the manufacturing of such LCD panel (LCD) is more complicated a little, it has the advantage that needs a monochromatic optical system.In addition, this optical filter and color elements will never misalignment, and LCD panel (LCD) weight is almost the same with a single color device, therefore, has saved weight and space.By removing the saving of the weight that prism, color filter, retrodirective mirror etc. and fixture thereof also can obtain to add.
No. 5321450 United States Patent (USP) has been described a kind of projector that embodies these principles.By adopting a catoptron and a LCD panel (LCD) that tilts, can obtain a kind of lower profile.One lens with its vertically disposed optical axis are used for projection, and last catoptron (collapsible) makes light along a horizontal route break-in, and this catoptron is unique mobile element when storage, and therefore the space of saving is less.
" EzPro 500 " projector of being made by CTX OPTO Inc is equipped with lens of folding up and a mirror unit, so that can shrink storage.
No. 5483253 United States Patent (USP) disclosed at the device that uses, and it comprises computing machine and the relevant apparatus of putting atop, and wherein miniaturization is counted as advantage.In the device of these types, the hinged its rear rim of a LCD panel (LCD) place is so that can fold up it in order at storage and when carrying and keyboard coplane.Yet these devices are normally reflection in operation, some the time by backlit, some the time be made into dismountable so that this plate can use on an OHP for example.At present, " above the palm " structure also becomes and can accomplish.These devices are a small-size computer, keyboard and LCD panel (LCD), and even also littler than the above-mentioned computing machine of putting atop.Device above the palm is collapsible when storage, and as if in the one bag of chamber of packing into, the user had both appreciated the small-sized volume of this device when using, and appreciates its characteristics collapsible when storage again.
Because characteristics such as LCD panel (LCD) projector light weight is simple to operate, and are easy to maintenance, its market shows great vitality gradually, and the market share sharply rises.But its product price is high, and any a common projector's price is all more than several ten thousand yuan.The high price like this of projector allows it be confined to some special places, allows heaving a sigh that the consumer hopes.
The explanation of above example, the volume that existing LCD panel (LCD) projector has is big, Heavy Weight, efficient are low, and the complex structure that has costs an arm and a leg.
The volume that the inventor has at existing LCD panel (LCD) projector is big, Heavy Weight, efficient are low, the complex structure that has, expensive problem, designed a kind of liquid crystal projection plate (No. 002102234, Chinese patent) that can be used with general projectors, make former projector have the dual-use function of general projectors and LCD panel (LCD) projector, and compare with the LCD panel projector of market sale, can reduce selling price significantly.Its weak point is not have random writing function, and radiating effect is not satisfactory, and some mating parts lack packing ring, the shockproof and sealing of unfavorable equipment.
Summary of the invention
The objective of the invention is liquid crystal projection plate (No. 002102234, Chinese patent) at inventor design remain do not have a random writing function, radiating effect is not satisfactory, some mating parts lack packing ring, unfavorable equipment shockproof and the sealing problem, a kind of random writing function that has is provided, good heat dissipation, the shockproof and strong liquid crystal projection plate of sealing property.
Liquid crystal projection plate of the present invention comprises: a housing, is arranged on display circuit board, four screen support posts that are used to support LCD MODULE that interior colorful film transistor (TFT) the active driven liquid crystal display module, of this housing is arranged on the VGA interface in the housing.
Housing is made of lower house, upper shell, the equal perforate in the centre of lower house, upper shell, and its size is fit to the display area of LCD MODULE, makes light source, the light path of utilizing former projector become possibility.
Upper shell center drilling edge has downward dip plane, makes liquid crystal display face be lower than the upper surface of upper shell, makes the more approaching former projector surface of shell of liquid crystal display face, can be convenient to the adjusting of focal length, makes video picture more clear.
Lower house and upper shell all are rectangularity, with the tight-lipped drive fit of negative and positive.
Four following thick thin columns fixing, the carrying LCD MODULE are positioned at lower house center drilling edge.This column makes the LCD MODULE lower surface be higher than the housing drain pan, makes periphery leave bigger space, to form the cross-ventilation heat-dissipating space, reduces the temperature of LCD MODULE, prolongs its serviceable life.
The internal fixation of lower house has the display circuit board of VGA interface.
For preventing that dust from producing negative effects such as stain, installs a dustproof glass additional in the behind of LCD MODULE.Coating reflectorised paint in housing bottom surface reducing the thermoradiation efficiency of light source, thereby reduces temperature in the housing, and the display circuit board that prevents LCD MODULE and VGA interface is overheated and damage.
The side of housing is provided with uniform louvre, and is unobstructed to guarantee cross-ventilation, is beneficial to outwards heat radiation in the housing.
The liquid crystal projection plate outside is provided with the display circuit board socket of a VGA interface, a transformer, a power switch.
In addition, above LCD MODULE, can be provided with a projection plate with random writing function and protection LCD MODULE and write glass.
Dip plane that upper shell center drilling edge is downward and projection plate are write the rubber blanket that is provided with shockproof function between the glass, prevent that projection plate from writing glass fragmentation faced.
Bottom at LCD MODULE dustproof glass behind is provided with heat insulation polaroid.
According to the characteristics of the structure of housing fabric swatch again, it is positioned at the liquid annex and organically is combined into one, and is convenient to storage and carrying, also.The display circuit board of VGA interface, Taiwan connection people science and technology is limited all production, and model is TCT-104P01VGA.
On the projector that the top of system is passed through, therefore can original function can be realized, the mutual easy switching of LCD panel can be realized again with multiple projection.Its available electron instrument addressing, and can provide than the reduction of LCD panel (LCD) projector more than 50%.This heat is good, the shockproof and strong advantage of sealing property.Structural map; Stereographic map;
Be loaded on universal projector constitutional diagram before;
Be loaded on universal projector embodiment stereographic map afterwards.
The invention will be further described: the sectional view that is liquid crystal projection plate of the present invention for example.This projection plate designs according to suitable strength, minimum weight.The display circuit board socket 9 of a VGA interface of the outside structure of projection plate, transformation, lower house rectangularity are with the tight-lipped drive fit of negative and positive.In the shell convection current; Drain pan lower surface coating reflectorised paint 7 reduces heat radiation display circuit board 5, four screen support posts 8 that are used to support LCD MODULE 3.
Housing is made of lower house 1, upper shell 2, the equal perforate in centre of lower house 1, upper shell 2, and its size is fit to the display area of LCD MODULE 3, makes light source, the light path of utilizing former projector become possibility.
Upper shell 2 center drilling edges have downward dip plane, make liquid crystal display face be lower than the upper surface of upper shell 2, make the more approaching former projector surface of shell of liquid crystal display face, can be convenient to the adjusting of focal length, make video picture more clear.
Lower house 1 all is rectangularity with upper shell 2, with the tight-lipped drive fit of negative and positive.
Four following thick thin columns 8 fixing, carrying LCD MODULE 3 are positioned at lower house 1 center drilling edge.This column 8 makes LCD MODULE 3 lower surfaces be higher than the housing drain pan, makes periphery leave bigger space, to form the cross-ventilation heat radiation, reduces the temperature of LCD MODULE 3, prolongs its serviceable life.
The internal fixation of lower house 1 has the display circuit board 5 of VGA interface.
For preventing that dust from producing negative effects such as stain, installs a dustproof glass 4 additional in the behind of LCD MODULE 3.Coating reflectorised paint 7 in housing bottom surface reducing the thermoradiation efficiency of light source, thereby reduces temperature in the housing, and the display circuit board 5 that prevents LCD MODULE 3 and VGA interface is overheated and damage.
The side of housing is provided with uniform louvre 6, and is unobstructed to guarantee cross-ventilation, is beneficial to outwards heat radiation in the housing.
Liquid crystal projection plate 12 outsides are provided with the display circuit board socket 9 of a VGA interface, transformer 10, a power switch 11.
In addition, above LCD MODULE 3, can be provided with a projection plate with random writing function and protection LCD MODULE 3 and write glass 18.
Dip plane that upper shell 2 center drilling edges are downward and projection plate are write the rubber blanket 19 that is provided with shockproof function between the glass, and it is cracked to prevent that projection plate from writing glass 18.
Bottom at LCD MODULE 3 dustproof glass 4 behind is provided with heat insulation polaroid 21.
Lower house 1 is provided with packing washer 20 with upper shell 2 negative and positive mouth cooperation places.
LCD MODULE 3 keeps certain distance with lower house, so that regulate the focal length of lens.
LCD MODULE 3 is the LCD MODULE of the active type of drive of TFT.
LCD MODULE 3 is the 10.4 " LCD MODULE of VGA.
LCD MODULE 3 has been for to have dismantled the original backlight annex and the LCD MODULE of backboard, thereby can utilize former projector light source transmission and imaging.
Dust-proof glass plate 4 after the LCD MODULE 3 prevents that effectively dust from staiing, thereby improves the quality of image.
Again the cloth pcb board is contained within the housing pcb board, and does not make housing excessive or blocked up, makes whole attachment device volume reduce, and is convenient to storage and carrying, helps the protection of circuit component.
Liquid crystal projection plate 12 constitutes an independently integral body, can be placed on simply on original projector, is not fixedly connected.Therefore can use with the projector coupling that traditional top of multiple model and specification is passed through, make projector can realize original function, can realize the function of LCD panel (LCD panel (LCD)) projector again, and can switch easily.
LCD MODULE is used the polaroid of high-transmission rate, to strengthen the brightness of image.
Fig. 3 passes through the working state figure of projector 13 for the common top that does not apply this liquid crystal projection plate 12.Remove after this product, can carry out the function of general projectors projection film.
The working state figure that Fig. 4 is used by projector 13 for this liquid crystal projection plate 12 and common top.Place common top by on the projector 13 this liquid crystal projection plate, start computing machine 14, point swashs right mouse button 15, selects attribute column, selects the hurdle that is provided with in the display properties dialog box.With the screen area that is provided with in the hurdle, change to 640 * 480 pixels, point swashs " application ".The screen display prompting need be restarted computing machine 14, requires the user to wait for 15 seconds.After 15 seconds, machine restarts and finishes, and the user should put sharp " determining ".At this moment the user can close computing machine, dials graphoscope winding displacement 16 down, and this liquid crystal projection plate is connected with the VGA socket of computing machine 14 with winding displacement 17, plugs transformer frequency response 10.Reopen the main frame power supply, open the projector power supply, promptly can realize the function of LCD panel (LCD panel (LCD)) projector.
Need be equipped with a computing machine and a projector during work of this liquid crystal projection plate.Note during use not catching and touch TFT-LCD panel (LCD) display screen,, influence display effect in order to avoid pollute working face.Use the cotton ball wiping that speckles with alcohol if necessary.Should be specifically noted that the accidental shock of avoiding TFT-LCD panel (LCD) display screen, cause irremediable loss.

Claims (4)

1. a liquid crystal projection plate comprises that a housing, is arranged on display circuit board, four columns that are used to support LCD MODULE that the interior colorful film transistor active driven liquid crystal display module, of this housing is arranged on the VGA interface in the housing; Housing is made of lower house, upper shell, and lower house and upper shell all are rectangularity, with the tight-lipped drive fit of negative and positive; The equal perforate in the centre of lower house, upper shell, its size is identical with the display area of LCD MODULE; Upper shell center drilling edge has downward dip plane, and the liquid crystal display face of making is lower than the upper shell upper surface, makes the more approaching former projector surface of shell of liquid crystal display face; Four following thick thin columns fixing, the carrying LCD MODULE are located at lower house center drilling edge, and this column makes the LCD MODULE lower surface be higher than the housing drain pan, makes periphery leave bigger space; The lower house internal fixation has the display circuit board of VGA interface; Install a dust-proof glass plate additional in the behind of LCD MODULE; Housing bottom surface coating reflectorised paint; The side of housing is provided with uniform louvre; The liquid crystal projection plate outside is provided with the display circuit board socket of a VGA interface, a transformer, a power switch;
It is characterized in that: above LCD MODULE, a projection plate can be set write glass.
2. liquid crystal projection plate as claimed in claim 1 is characterized in that: dip plane that upper shell center drilling edge is downward and projection plate are write the rubber blanket that is provided with between the glass.
3. liquid crystal projection plate as claimed in claim 1 is characterized in that: the bottom at LCD MODULE dustproof glass 4 behind is provided with heat insulation polaroid.
4. liquid crystal projection plate as claimed in claim 1 is characterized in that: lower house and upper shell negative and positive mouth cooperation place are provided with packing washer.
CN 01141960 2001-09-26 2001-09-26 Liquid crystal projection plate Pending CN1410828A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 01141960 CN1410828A (en) 2001-09-26 2001-09-26 Liquid crystal projection plate

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Application Number Priority Date Filing Date Title
CN 01141960 CN1410828A (en) 2001-09-26 2001-09-26 Liquid crystal projection plate

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CN1410828A true CN1410828A (en) 2003-04-16

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Application Number Title Priority Date Filing Date
CN 01141960 Pending CN1410828A (en) 2001-09-26 2001-09-26 Liquid crystal projection plate

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102262258A (en) * 2011-05-27 2011-11-30 赖钺平 Thermal insulating plate applied to outdoor Liquid Crystal Display (LCD) display screen
CN102621719A (en) * 2012-02-15 2012-08-01 深圳市华星光电技术有限公司 Thinned liquid crystal display

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102262258A (en) * 2011-05-27 2011-11-30 赖钺平 Thermal insulating plate applied to outdoor Liquid Crystal Display (LCD) display screen
CN102621719A (en) * 2012-02-15 2012-08-01 深圳市华星光电技术有限公司 Thinned liquid crystal display
WO2013120303A1 (en) * 2012-02-15 2013-08-22 深圳市华星光电技术有限公司 Thinned liquid crystal display
CN102621719B (en) * 2012-02-15 2015-04-29 深圳市华星光电技术有限公司 Thinned liquid crystal display

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Addressee: Xu Zhenqiang

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