CN114994965B - End-side-outlet flat cable liquid crystal screen projector - Google Patents

End-side-outlet flat cable liquid crystal screen projector Download PDF

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Publication number
CN114994965B
CN114994965B CN202210561665.4A CN202210561665A CN114994965B CN 114994965 B CN114994965 B CN 114994965B CN 202210561665 A CN202210561665 A CN 202210561665A CN 114994965 B CN114994965 B CN 114994965B
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CN
China
Prior art keywords
integrated circuit
liquid crystal
tft
side substrate
flat cable
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Active
Application number
CN202210561665.4A
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Chinese (zh)
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CN114994965A (en
Inventor
连詹田
孙祥龙
蔡明玮
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Hubei Ruxin Electronic Co ltd
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Hubei Ruxin Electronic Co ltd
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    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133526—Lenses, e.g. microlenses or Fresnel lenses
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133528—Polarisers
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133603—Direct backlight with LEDs
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
    • G02F1/133607—Direct backlight including a specially adapted diffusing, scattering or light controlling members the light controlling member including light directing or refracting elements, e.g. prisms or lenses
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/005—Projectors using an electronic spatial light modulator but not peculiar thereto
    • G03B21/006—Projectors using an electronic spatial light modulator but not peculiar thereto using LCD's
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/16—Cooling; Preventing overheating
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/20—Lamp housings
    • G03B21/2006—Lamp housings characterised by the light source
    • G03B21/2033—LED or laser light sources
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/20—Lamp housings
    • G03B21/206—Control of light source other than position or intensity
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/20—Lamp housings
    • G03B21/2066—Reflectors in illumination beam
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
    • H04N9/3102—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM] using two-dimensional electronic spatial light modulators
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
    • H04N9/3141—Constructional details thereof
    • H04N9/3144—Cooling systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
    • H04N9/3141—Constructional details thereof
    • H04N9/315—Modulator illumination systems

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Optics & Photonics (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Projection Apparatus (AREA)

Abstract

The invention relates to the technical field of projectors, in particular to a terminal side flat cable-outlet liquid crystal screen projector, which comprises a shell, wherein a TFT side substrate is arranged in the shell, a CF side substrate is covered on the TFT side substrate, a source integrated circuit is arranged on the short side of the TFT side substrate, a signal flat cable is connected to the source integrated circuit, a source integrated circuit signal wire is arranged in the area, which is not covered by the CF side substrate, of the TFT side substrate, the source integrated circuit and the signal flat cable are arranged on the short side of the TFT side substrate, and then the source integrated circuit and the long side of the CF side substrate are connected through the source integrated circuit signal wire, so that the influence of the liquid crystal signal flat cable on heat dissipation caused by the arrangement of the long side of the TFT side substrate can be avoided, the influence of the display of a liquid crystal display screen on a horizontal picture can be ensured while an image signal coding circuit is not additionally arranged, and the production cost is prevented from being too high.

Description

End-side-outlet flat cable liquid crystal screen projector
Technical Field
The invention relates to the technical field of projectors, in particular to a liquid crystal display projector with a flat cable at the side of an end.
Background
A projector, also called a projector, is a device capable of projecting images or videos onto a curtain, and can play corresponding video signals by being connected with a computer, VCD, DVD, BD, a game machine, DV and the like through different interfaces.
The liquid crystal screen used in the single-chip liquid crystal screen projector technology is a horizontal screen type or a vertical screen type, the liquid crystal screen can design the positions of the signal flat cable and the source electrode driving integrated circuit to be as close as possible on the basis of considering signal attenuation, the purpose is to reduce the impedance of a transmission line to avoid the signal from being greatly attenuated, and the source electrode signal transmission line can be designed to be smaller as far as possible in consideration of reducing the area of a display ineffective area, so that the positions of the signal flat cable and the source electrode driving integrated circuit are very close.
In the product of monolithic LCD projector, there are two connection modes for arranging signal flat cable and source drive integrated circuit on the long side and short side of LCD, these two connection modes have the following disadvantages:
1. if the signal flat cable and the source electrode driving integrated circuit are arranged on the long side of the liquid crystal screen, heat dissipation airflow is blocked, and heat dissipation of the liquid crystal screen is affected;
2. if the signal flat cable and the source electrode driving integrated circuit are arranged on the short side of the liquid crystal screen, an image signal coding circuit is added on the signal driving circuit to change the display picture from a straight picture to a correct horizontal picture, but the added image encoder can lead to the increase of production cost and is unfavorable for product sales.
Therefore, there is a need for a projector liquid crystal panel that has low production cost and is convenient to dissipate heat.
Disclosure of Invention
The invention aims to provide an end-side wire-outlet liquid crystal screen projector so as to solve the problems in the background technology.
The aim of the invention can be achieved by the following technical scheme:
the utility model provides a terminal side goes out winding displacement LCD projector, includes the casing, the inside of casing is provided with TFT side base plate, it has CF lateral baseplate to cover on the TFT side base plate, the minor face side of TFT side base plate is provided with source integrated circuit, be connected with signal flat cable on the source integrated circuit, the TFT side base plate does not cover have the region of CF side base plate is provided with source integrated circuit signal wire, source integrated circuit signal wire's one end with source integrated circuit electric connection.
And polarizers are arranged in the shell and in the areas at the top and the bottom of the TFT side substrate, and Fresnel lenses are arranged on one side, away from the TFT side substrate, of the polarizers.
The top and the bottom of the inner wall of the shell are both provided with reflectors which are obliquely arranged, and one side of the reflector at the bottom of the inner wall of the shell is provided with a fan.
A lens is fixedly arranged on one side of the top of the shell, and the lens and a reflecting mirror on the top of the inner wall of the shell are located at the same height.
One side of the inner wall of the shell is provided with an LED light source, one side of the LED light source is provided with a lens, and the LED light source and the lens are positioned at the same height with a reflector at the bottom of the inner wall of the shell.
The thin film transistor further comprises a single-layer protection layer, wherein the single-layer protection layer is arranged on the TFT side substrate and is not covered on the CF side substrate area.
The heat-conducting plate comprises a single-layer protection layer, and is characterized by further comprising a first heat-radiating fin, wherein the first heat-radiating fin is arranged above the single-layer protection layer, and a first heat-conducting adhesive used for attaching the first heat-radiating fin to the upper side of the single-layer protection layer is arranged at the bottom of the first heat-radiating fin.
The material of the first radiating fin is any one of copper, aluminum, graphite, graphene oxide, heat-conducting silica gel and heat-conducting polymer, and the material of the single-layer protective layer is any one of silicon oxide, silicon nitride, acrylic resin, epoxy resin and organic silica gel.
The TFT side substrate further comprises a plurality of protection layers, wherein the protection layers are arranged above the areas, which are not covered by the CF side substrate, of the TFT side substrate.
The heat-conducting device further comprises a second heat radiating fin, wherein the second heat radiating fin is arranged above the plurality of protection layers, and a second heat-conducting adhesive used for attaching the second heat radiating fin to the upper parts of the plurality of protection layers is arranged at the bottom of the second heat radiating fin.
The invention has the beneficial effects that:
1. the source integrated circuit and the signal flat cable are arranged on the short side of the TFT side substrate, and the source integrated circuit is connected with the long side of the CF side substrate through the signal wire of the source integrated circuit, so that the influence of heat dissipation on the long side of the TFT side substrate due to the arrangement of the liquid crystal signal flat cable can be avoided, the influence of the display of the liquid crystal display screen on a horizontal picture can be ensured while the image signal coding circuit is not additionally arranged, and the production cost is prevented from being too high.
2. The source integrated circuit signal wire is arranged in the area, which does not cover the CF side substrate, of the TFT side substrate, so that heat dissipation of the CF side substrate and the TFT side substrate can be accelerated through the source integrated circuit signal wire while picture display is not affected, and heat generated by an LED light source is prevented from being conducted to the CF side substrate and the TFT side substrate and cannot be dissipated timely, and projection imaging quality is affected.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described, and it will be obvious to those skilled in the art that other drawings can be obtained according to these drawings without inventive effort;
FIG. 1 is a schematic structural view of embodiment 1 of the present invention;
FIG. 2 is a schematic exploded view of the housing of FIG. 1;
FIG. 3 is a schematic view of the internal structure of the side view portion of the housing of FIG. 1;
fig. 4 is a schematic structural view of a portion of the TFT-side substrate shown in fig. 2;
fig. 5 is a schematic view showing a heat radiation direction of a portion of the TFT-side substrate shown in fig. 3;
FIG. 6 is a schematic diagram of a prior art structure;
FIG. 7 is a schematic diagram showing a process of folding the signal flat cable shown in FIG. 6 in half;
FIG. 8 is a schematic view showing the direction of the heat dissipation airflow after the flat cable of FIG. 7 is folded in half;
FIG. 9 is a schematic diagram of a structure of a second prior art;
FIG. 10 is a schematic diagram of the projection state of FIG. 9 without the video signal encoding circuit;
FIG. 11 is a schematic diagram of the projection state of the video signal encoding circuit of FIG. 9;
fig. 12 is a schematic structural view of a side view portion of the TFT-side substrate shown in fig. 4;
fig. 13 is a schematic structural view of embodiment 2 of the present invention;
fig. 14 is a schematic structural view of embodiment 3 of the present invention;
fig. 15 is a schematic structural view of embodiment 4 of the present invention;
fig. 16 is a schematic structural view of embodiment 5 of the present invention.
Reference numerals in the drawings are as follows:
1. the LED light source comprises a shell, 2, a TFT side substrate, 3, a CF side substrate, 4, a source integrated circuit, 5, a signal flat cable, 6, a source integrated circuit signal wire, 7, a polaroid, 8, a Fresnel lens, 9, a reflector, 10, a fan, 11, a lens, 12, an LED,13, a lens, 14, a single-layer protection layer, 15, a first radiating fin, 16, a first heat-conducting glue, 17, a plurality of protection layers, 18, a second radiating fin, 19 and a second heat-conducting glue.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
The utility model provides a terminal side goes out winding displacement LCD projector, includes casing 1, the inside of casing 1 is provided with TFT side base plate 2, TFT side base plate 2 is last to be covered with CF side base plate 3, the minor face side of TFT side base plate 2 is provided with source integrated circuit 4, be connected with signal flat cable on the source integrated circuit 4, TFT side base plate 2 is last not to be covered the region of CF side base plate 3 is provided with source integrated circuit signal wire 6, the one end of source integrated circuit signal wire 6 with source integrated circuit 4 electric connection.
The TFT-side substrate 2 is a thin film transistor component substrate side of a liquid crystal panel, the CF-side substrate 3 is a color filter-covered substrate, one end of the source integrated circuit signal wire 6 is connected to the area covered with the CF-side substrate 3 on the TFT-side substrate 2, the other end passes over the area not covered with the CF-side substrate 3 on the TFT-side substrate 2 and is connected to the source integrated circuit 4, and the source integrated circuit 4 is also arranged in the area not covered with the CF-side substrate 3 on the TFT-side substrate 2.
In the present application, the liquid crystal panel is constituted of a TFT-side substrate 2, a CF-side substrate 3, a source integrated circuit 4, a signal flat cable 5, and a source integrated circuit signal wire 6, wherein the constitution and function of each portion are as follows:
TFT-side substrate 2: glass is used as a substrate, and a thin film transistor, a pixel electrode, a gate signal line, a gate driving integrated circuit, a source integrated circuit signal wire 6, a pin electrode corresponding to the source integrated circuit 4, a pin electrode corresponding to the signal flat cable 5 and a drain metal line which are needed by each pixel are manufactured on the glass substrate;
CF-side substrate 3: using glass as a substrate, and manufacturing a color filter (R, G, B) required by each pixel, a black matrix for shielding stray light and a pixel common electrode layer on the glass;
signal flat cable 5: the LCD control signal sent by the image signal processing circuit is processed by the circuit component and then is transmitted to the corresponding gate drive integrated circuit and source integrated circuit 4;
source integrated circuit signal conductor 6: the source control signal corresponding to each pixel RGB is led from the source integrated circuit 4 to the source integrated circuit signal wire 6 extending from the long side of the CF side substrate 3 and is transmitted to the corresponding pixel RGB source electrode in the display area.
The area of the TFT side substrate 2 not covered by the CF side substrate 3 is an ineffective area of the lcd, and the source ic signal line 6 disposed in this area does not display the picture effect, and the source ic signal line 6 can increase the line width design and increase the metal film thickness to reduce the impedance.
The source integrated circuit 4 and the signal flat cable 5 may be provided on either one of the short side sides of both sides of the TFT-side substrate 2 according to actual needs and use environments.
The inside of casing 1 and the region that is located TFT side base plate 2 top and bottom all are provided with polaroid 7, the polaroid 7 is kept away from one side of TFT side base plate 2 is provided with fresnel lens 8.
The top and the bottom of the inner wall of the shell 1 are respectively provided with a reflector 9 which is obliquely arranged, and one side of the reflector 9 at the bottom of the inner wall of the shell 1 is provided with a fan 10.
The fan 10 may generate a heat-dissipating air flow inside the housing 1 to cool the liquid crystal panel and the respective optical devices.
A lens 11 is fixedly arranged on one side of the top of the shell 1, and the lens 11 and a reflecting mirror 9 on the top of the inner wall of the shell 1 are positioned at the same height.
An LED12 is arranged on one side of the inner wall of the shell 1, a lens 13 is arranged on one side of the LED12, and the LED12 and the lens 13 are positioned at the same height with the reflector 9 at the bottom of the inner wall of the shell 1.
As shown in fig. 1, 2 and 3, a liquid crystal panel is constituted by a TFT-side substrate 2, a CF-side substrate 3, a source integrated circuit 4, a signal flat cable 5 and a source integrated circuit signal wire 6.
When the projector is required to be used, firstly, a light source required by a liquid crystal screen is provided through an LED12, the light source generated by the LED12 is focused through a lens 13, then is reflected through a reflecting mirror 9 at the bottom of the inner wall of a shell 1, the light source which is turned and reflected by the lens 13 for 90 degrees is LED into a Fresnel lens 8 below the liquid crystal screen to converge the light source which is emitted by the lens 13, the light source is converted into parallel light, and then the polarizer 7 below the liquid crystal screen is used as a polarizer, so that the unpolarized light which is projected into the liquid crystal screen by the light source is converted into polarized light with a single polarization direction;
the polarizer 7 above the liquid crystal screen can control whether polarized light passing through the liquid crystal screen passes through or not so as to display an image picture of the liquid crystal screen, the Fresnel lens 8 above the liquid crystal screen is matched with the reflector 9 above to focus into the lens 11, the lens 11 is a combination of various optical lenses, and the picture image displayed by the liquid crystal screen assembly can be amplified and projected onto a wall cloth curtain to complete projection.
As shown in fig. 6, in the first prior art, when the source integrated circuit and the signal flat cable are directly disposed on the long side of the TFT side substrate, in this case, the position of the signal flat cable is on the heat dissipation air duct of the liquid crystal display projector, which is easy to obstruct the flow of the heat dissipation air flow to cause turbulence, so as to avoid influencing the color and brightness of the projected image of the projector due to insufficient heat dissipation capability.
As shown in fig. 7, in the first prior art, in order to reduce turbulence of the air flow by the signal flat cable, the signal flat cable may be folded in half;
as shown in fig. 8, in one prior art, even after the flat cable is folded in half, the cooling air flow is sent to the air channels of the polarizer and the CF side substrate of the liquid crystal screen through the fan, so as to dissipate heat of the polarizer and the liquid crystal screen, and then is sent to the air channel between the TFT side substrate of the liquid crystal screen and the fresnel lens through the turning air channel, and finally, the heat dissipation air flow passes through the signal flat cable of the liquid crystal screen, and the air flow in this area is easy to block the heat dissipation air flow due to the influence of the components on the signal flat cable and the structure of the flat cable after being folded in half, so that heat is easy to accumulate in the area where the signal flat cable is located, and the whole heat dissipation effect is affected.
As shown in fig. 9 and 10, in the second prior art, when the source integrated circuit 4 and the signal flat cable 5 are directly disposed on the short side of the TFT-side substrate 2, the image displayed by the vertical screen type liquid crystal panel is a straight image;
as shown in fig. 10 and 11, by adding an image signal encoding circuit to the signal driving circuit, the display frame is changed from a straight frame to a correct horizontal frame, but this way will increase the production cost, which is unfavorable for production and sales.
As shown in fig. 4, for the first and second prior arts, the source integrated circuit 4 and the signal flat cable 5 are directly disposed on the short side of the TFT substrate 2, and then the source integrated circuit 4 is connected to the long side of the CF substrate 3 by the source integrated circuit signal wire 6, so that the image displayed on the liquid crystal display is a horizontal image.
As shown in fig. 2 and 5, the heat generated by the leds 12 is conducted to the CF side substrate 3 and the TFT side substrate 2, and the generated heat can be quickly and largely conducted to the areas where the signal wires 6 of the source integrated circuits are located, and then the heat is transferred to an external system through a heat dissipation system of the projector, so that the influence of heat accumulation on the CF side substrate 3 and the TFT side substrate 2 due to the lower heat conduction coefficient of the CF side substrate 3 and the TFT side substrate 2 made of glass is avoided.
Compared with the related art, the end-side flat cable liquid crystal display projector provided by the invention has the following beneficial effects:
the source integrated circuit 4 and the signal flat cable 5 are arranged on the short side of the TFT side substrate 2, and the source integrated circuit signal wire 6 is used for connecting the source integrated circuit 4 with the long side of the CF side substrate 3, so that the phenomenon that the heat dissipation is affected by the arrangement of the liquid crystal signal flat cable 5 on the long side of the TFT side substrate 2 can be avoided, the image displayed by the liquid crystal display screen is ensured to be a horizontal picture while the image signal coding circuit is not additionally arranged, and the production cost is avoided to be too high.
The source integrated circuit signal wire 6 is arranged in the area, which does not cover the CF side substrate 3, of the TFT side substrate 2, so that the heat dissipation of the CF side substrate 3 and the TFT side substrate 2 can be accelerated through the source integrated circuit signal wire 6 while the display of a picture is not influenced, and the influence on the quality of projection imaging due to the fact that the heat generated by the LEDs 12 is conducted to the CF side substrate 3 and the TFT side substrate 2 and cannot be dissipated in time is avoided.
Example 2
Based on embodiment 1, the present invention also provides embodiment 2, and embodiment 2 provided by the present invention further includes a single-layer protection layer 14, where the single-layer protection layer 14 is disposed on the TFT-side substrate 2 above the area not covered by the CF-side substrate 3.
As shown in fig. 4, 12 and 13, the single protective layer 14 may be formed by chemical vapor deposition, physical vapor deposition, wet coating, or the like.
Compared with the related art, the end-side flat cable liquid crystal display projector provided by the invention has the following beneficial effects:
by providing the single-layer protection layer 14 on the TFT-side substrate 2 above the area not covered by the CF-side substrate 3, protection is provided for the source integrated circuit signal wire 6, the aging speed of the source integrated circuit signal wire 6 is reduced, and the service life of the source integrated circuit signal wire 6 is prolonged.
Example 3
Based on embodiment 2, the present invention further provides embodiment 3, and embodiment 3 provided by the present invention further includes a first heat sink 15, where the first heat sink 15 is disposed above the single-layer protection layer 14, and a first heat-conducting adhesive 16 for attaching the first heat sink 15 to the upper side of the single-layer protection layer 14 is disposed at the bottom of the first heat sink 15.
The material of the first heat sink 15 is any one of copper, aluminum, graphite, graphene oxide, heat conductive silica gel and heat conductive polymer, and the material of the single-layer protection layer 14 is any one of silicon oxide, silicon nitride, acrylic resin, epoxy resin and organic silica gel.
As shown in fig. 8 and 9, the heat sink has flexibility and can be folded to adhere to the shape of the heat dissipation air duct to avoid interfering the flow of heat dissipation air.
Compared with the related art, the end-side flat cable liquid crystal display projector provided by the invention has the following beneficial effects:
the high temperature generated by the LED light source irradiating the liquid crystal display region is conducted to the source integrated circuit signal wire 6 region of the non-display region (region of the TFT side substrate 2 not covered with the CF side substrate 3) via the source integrated circuit signal wire 6 of the display region (region of the TFT side substrate 2 covered with the CF side substrate 3), and then conducted to the first heat sink 15.
Through pasting a first fin 15 through first heat-conducting glue 16 in individual layer protective layer 14 top, can assist the heat dissipation of CF lateral plate 3 and TFT lateral plate 2, conduct the heat of LCD screen through first fin 15, cool down by the radiating air current that fan 10 produced again, promote the radiating rate of LCD screen.
Example 4
Based on embodiment 1, the present invention further provides embodiment 4, and embodiment 4 provided by the present invention further includes a plurality of protection layers 17, where the plurality of protection layers 17 are disposed on the TFT-side substrate 2 above the area not covered by the CF-side substrate 3.
The material of the plurality of protective layers 17 is selected from the group consisting of silicon oxide, silicon nitride, acrylic, epoxy, and silicone.
As shown in fig. 9 and 10, the plural protective layers 17 are made of two or more different materials.
Compared with the related art, the end-side flat cable liquid crystal display projector provided by the invention has the following beneficial effects:
by arranging the plurality of protection layers 17 above the area of the TFT side substrate 2 which is not covered by the CF side substrate 3, protection is provided for the source integrated circuit signal wire 6, the aging speed of the source integrated circuit signal wire 6 is reduced, the service life of the source integrated circuit signal wire 6 is prolonged, and the plurality of protection layers 17 are compared with the single-layer protection layer 14, so that materials of different materials can be selected according to actual needs, and the purpose of providing more excellent protection capability for the source integrated circuit signal wire 6 is achieved.
Example 5
Based on embodiment 4, the present invention further provides embodiment 5, and embodiment 5 further includes a second heat sink 18, where the second heat sink 18 is disposed above the plurality of protection layers 17, and a second heat-conducting adhesive 19 for attaching the second heat sink 18 above the plurality of protection layers 17 is disposed at a bottom of the second heat sink 18.
The material selected for the second heat sink 18 is the same as the material selected for the first heat sink 15.
Compared with the related art, the end-side flat cable liquid crystal display projector provided by the invention has the following beneficial effects:
the high temperature generated by the LED light source irradiating the liquid crystal display region is conducted to the source integrated circuit signal wire 6 region of the non-display region (region of the TFT side substrate 2 not covered with the CF side substrate 3) via the source integrated circuit signal wire 6 of the display region (region of the TFT side substrate 2 covered with the CF side substrate 3), and then conducted to the second heat sink 18.
Through pasting a second fin 18 through second heat conduction glue 19 in a plurality of protective layer 17 top, can assist the heat dissipation of CF lateral plate 3 and TFT lateral plate 2, conduct the heat of LCD screen through second fin 18, cool down by the radiating air current that fan 10 produced again, promote the radiating rate of LCD screen.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims.

Claims (8)

1. The utility model provides a terminal side goes out winding displacement LCD projector, includes casing (1), its characterized in that, the inside of casing (1) is provided with TFT side base plate (2), TFT side base plate (2) are gone up to be covered with CF side base plate (3), TFT side base plate (2) minor face side is provided with source integrated circuit (4), be connected with signal flat cable (5) on source integrated circuit (4), TFT side base plate (2) are gone up and are not covered with the region of CF side base plate (3) is provided with source integrated circuit signal wire (6), the one end of source integrated circuit signal wire (6) with source integrated circuit (4) electric connection;
the thin film transistor further comprises a single-layer protection layer (14), wherein the single-layer protection layer (14) is arranged above the area, which is not covered by the CF side substrate (3), of the TFT side substrate (2);
the heat-conducting structure further comprises a first heat radiating fin (15), wherein the first heat radiating fin (15) is arranged above the single-layer protection layer (14), and a first heat-conducting adhesive (16) used for attaching the first heat radiating fin (15) to the upper part of the single-layer protection layer (14) is arranged at the bottom of the first heat radiating fin (15);
a source integrated circuit signal wire (6) extending from the long side of the CF side substrate (3) is introduced at the source integrated circuit (4).
2. The end-to-side flat cable liquid crystal screen projector according to claim 1, wherein polarizers (7) are arranged in the shell (1) and in the areas at the top and the bottom of the TFT side base plate (2), and a fresnel lens (8) is arranged on one side of the polarizers (7) away from the TFT side base plate (2).
3. The end-side flat cable liquid crystal display projector according to claim 2, wherein the top and the bottom of the inner wall of the housing (1) are respectively provided with a reflector (9) which is obliquely arranged, and a fan (10) is arranged on one side of the reflector (9) at the bottom of the inner wall of the housing (1).
4. A terminal side flat cable liquid crystal screen projector according to claim 3, wherein a lens (11) is fixedly installed on one side of the top of the housing (1), and the lens (11) and a reflecting mirror (9) on the top of the inner wall of the housing (1) are located at the same height.
5. The end-side flat cable liquid crystal screen projector according to claim 4, wherein an LED (12) is arranged on one side of the inner wall of the shell (1), a lens (13) is arranged on one side of the LED (12), and the LED (12) and the lens (13) are both positioned at the same height as a reflector (9) at the bottom of the inner wall of the shell (1).
6. The end-to-side flat cable liquid crystal display projector according to claim 5, wherein the first heat sink (15) is made of any one of copper, aluminum, graphite, graphene oxide, heat conductive silica gel and heat conductive polymer, and the single-layer protective layer (14) is made of any one of silicon oxide, silicon nitride, acrylic resin, epoxy resin and organic silica gel.
7. The terminal side flat-wire liquid crystal screen projector according to claim 6, further comprising a plurality of protective layers (17), wherein the plurality of protective layers (17) are disposed on the TFT-side substrate (2) above the area not covered by the CF-side substrate (3).
8. An end-to-side flat-wire liquid crystal screen projector according to claim 7, further comprising a second heat sink (18), the second heat sink (18) being disposed above the plurality of protective layers (17), a second heat-conductive adhesive (19) being disposed at the bottom of the second heat sink (18) for bonding the second heat sink (18) to the plurality of protective layers (17).
CN202210561665.4A 2022-05-23 2022-05-23 End-side-outlet flat cable liquid crystal screen projector Active CN114994965B (en)

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CN2411572Y (en) * 1999-12-30 2000-12-20 华泰电子股份有限公司 Packaged integrated circuit board with direct conducting radiating fin
JP2001210936A (en) * 2000-01-26 2001-08-03 Kyocera Corp Wiring board
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