CN114779563A - Promote projecting apparatus of monolithic LCD screen performance - Google Patents

Abstract

The utility model relates to a promote projecting apparatus of monolithic LCD screen performance includes LED light source, light fill, back fresnel lens, light gain module, LCD module, polarisation module, preceding fresnel lens and camera lens in proper order along the direction that light sent. Light emitted by the LED light source is irradiated out of the lens after sequentially passing through the light hopper, the rear Fresnel lens, the light gain module, the LCD module, the polarization module and the front Fresnel lens, parallel polarized light P can pass through the light gain module, and non-parallel polarized light S is reflected back into the light hopper by the light gain module. The non-parallel polarized light S is converted into parallel polarized light P after being reflected for a plurality of times in the light hopper and passes through the light gain module, so that the effect of improving the brightness of the projector is achieved. On the other hand, the LCD module does not contain a polarizing film, and the light gain module reflects the non-parallel polarized light S without absorbing the non-parallel polarized light S, so that the problem of heating of the light gain module is reduced on the basis of improving the brightness of the projector, and the display characteristic of the projector is improved.

Description

Promote projecting apparatus of monolithic LCD screen performance

Technical Field

The application relates to the field of multimedia video output, in particular to a projector for improving performance of a single-chip liquid crystal display.

Background

With the development of science and technology, the problems of energy crisis, global warming, environmental pollution and the like become more severe, so that the technology is enjoyed to bring convenience, the economic and environmental sustainable development is maintained, and products and technologies for saving electricity, environment, energy and carbon are developed imperatively. In the field of multimedia video output, a projector is also called a projector, and is a device capable of projecting images or videos onto a curtain. Light sources used for projectors include conventional high-intensity gas discharge light sources (e.g., ultra-high pressure mercury lamps, short arc xenon lamps, metal halide lamps) and novel light sources typified by LED light sources and laser light sources. The conventional light source projector generally darkens and turns yellow (such as brightness attenuation, color saturation and contrast reduction and the like) along with attenuation of emergent light of a light source after being used for a period of time, and in a use occasion with a high requirement on image quality, even if a bulb still emits light, the requirement of a use scene is difficult to meet, so that light attenuation becomes a main obstacle which cannot be exceeded by the projector using the conventional light source. With the development of semiconductor lighting technology and laser technology, LED light sources and laser light sources have been rapidly developed in the lighting field and widely applied in the display field.

The single-chip liquid crystal projector has the characteristics of simple structure and low cost. In the related technical means, the structure of the single-chip liquid crystal projector sequentially comprises a rear Fresnel lens, heat insulation glass, an LCD screen, a front Fresnel lens and a lens from an LED point light source, wherein one surface of the heat insulation glass, which is close to the LED point light source, is a reflecting mirror surface, and an APCF polaroid is attached to one surface of the heat insulation glass, which is close to the LCD screen. Light output by the LED point light source sequentially passes through the rear Fresnel lens and the heat insulation glass to reach the LCD screen to form image or video information, and then is displayed on the curtain through the front Fresnel lens and the lens. The LCD screen mainly comprises a first polaroid, TFT-glass, a liquid crystal box, a color filter and a second polaroid which are sequentially attached.

According to the technical scheme, the first polarizer is arranged between the APCF polarizer and the liquid crystal box of the heat insulation glass, but the common polarizer can absorb part of light generally, so that the transmittance of the light is reduced, and the display characteristic of the projector is further influenced.

Disclosure of Invention

In order to improve the display performance of the projector, the application provides a projector for improving the performance of a single-chip liquid crystal screen.

The application provides a promote projecting apparatus of monolithic LCD screen performance adopts following technical scheme.

A projector for improving the performance of a single-chip liquid crystal screen sequentially comprises an LED light source, a light hopper, a rear Fresnel lens, a light gain module, an LCD module, a polarization module, a front Fresnel lens and a lens along the direction of light emission;

the light hopper is provided with an incident end and an emergent end, the LED light source is attached to the incident end and completely shields the incident end, and the rear Fresnel lens is attached to the emergent end and completely shields the emergent end;

the LCD module comprises a CF substrate, an LCD screen and a TFT substrate, wherein the CF substrate and the first reflection film substrate are mutually attached, and the polarization module is attached to the TFT substrate.

Through adopting above-mentioned technical scheme, the light that the LED light source sent shines out from the camera lens behind light fill, back fresnel lens, light gain module, LCD module, polarisation module and preceding fresnel lens in proper order, and this direction is the direction that light sent. Compared with the first polarizer arranged between the APCF polarizer and the liquid crystal cell of the insulating glass, the common polarizer usually absorbs part of light, so that the transmittance of the light is reduced, and the brightness of the projector is reduced. And the polaroid belongs to the light absorption type, can accumulate the heat and conduct to in the LCD module after the polaroid absorbs a large amount of light to cause the influence to the LCD module, and then influence the display characteristic of projecting apparatus. And in this technical scheme, parallel polarized light P can pass through the light gain module, and the light gain module can promote the luminance or the color saturation of light to improve the display performance of this projecting apparatus.

Optionally, the light gain module includes a first APCF film attached to a side of the rear fresnel lens away from the LED light source, and a first reflective film substrate attached to a side of the first APCF film away from the rear fresnel lens.

By adopting the technical scheme, the light gain module comprises the first APCF film and the first reflection film substrate, the first APCF film is attached to the side face, away from the LED light source, of the rear Fresnel lens, and the first reflection film substrate is attached to the side face, away from the rear Fresnel lens, of the first APCF film. Because the LED light source is attached to the incident end and completely shields the incident end, the rear Fresnel lens is attached to the emergent end and completely shields the emergent end, a closed environment is formed in the light hopper, and the non-parallel polarized light S is converted into the parallel polarized light P after being reflected for a plurality of times in the light hopper and passes through the first APCF film and the first reflection film substrate, so that the effect of improving the brightness of the projector is achieved. On the other hand, the LCD module does not comprise a polarizing film, and the first APCF film and the first reflection film substrate reflect the non-parallel polarized light S without absorption, so that the problem of heat generation of the light gain module is reduced on the basis of improving the brightness of the projector, and the display characteristic of the projector is improved.

Optionally, the polarization module includes a polarization substrate and a polarization film, the polarization substrate is attached to a side surface of the TFT substrate away from the LCD screen, the polarization film is attached to a side surface of the polarization substrate away from the TFT substrate, and a light-emitting direction of the polarization film is consistent with a light-emitting direction of the first APCF film.

Through adopting above-mentioned technical scheme, one side of LCD module is the light gain module, and the opposite side of LCD module is polarisation base plate and polarizing film to polarizing film's light-emitting direction is unanimous with the light-emitting direction of first APCF membrane, thereby guarantees that the luminance that passes through is the biggest, thereby improves the display brightness of projecting apparatus.

Optionally, the polarization module includes a second APCF film attached to a side of the TFT substrate away from the LCD screen and a second reflective film substrate attached to a side of the second APCF film away from the TFT substrate, and a light-emitting direction of the second APCF film is consistent with a light-emitting direction of the first APCF film.

By adopting the technical scheme, one side of the LCD module is provided with the light gain module, the other side of the LCD module is provided with the second APCF film and the second reflection film substrate, the light emitting direction of the second APCF film is consistent with that of the first APCF film, and the second APCF film can reflect the non-parallel polarized light S back to the light hopper, so that the problem of waste heat generated when the polarizing film absorbs the non-parallel polarized light S is solved, and the display brightness of the projector is further improved.

Optionally, one of the first APCF films and one of the first reflective film substrates form one APCF unit, and the light gain module sequentially includes two APCF units along a direction in which light is emitted.

By adopting the technical scheme, the light gain module sequentially comprises two APCF units along the direction of light emission, one side of the LCD module is provided with the two APCF units, the other side of the LCD module is provided with the second APCF film or the polarizing film, and the structure of the two APCF units is adopted, so that the non-parallel polarized light S entering the LCD module can be further reduced, the brightness of the projector can be improved, the contrast value of the projector is increased, the waste heat generation of the projector is also reduced, and the requirement of a cooling fan is reduced.

Optionally, an effective area of an incident end of the light funnel is larger than an effective area of the exit end, and a closed specular reflection aluminum film is arranged on the inner side of the light funnel.

Through adopting above-mentioned technical scheme, the effective area of the incident end of light fill is greater than the effective area of exit end, so that the incline direction at light fill inner wall is crescent towards one side at exit end place, and the inboard of light fill is confined specular reflection aluminium membrane, when non-parallel polarized light S gets into the light fill along the direction opposite with light emission direction, the reflection angle more does benefit to non-parallel polarized light S and carries out continuous reflection and directive back fresnel lens in the light fill, improves the reflection efficiency of light.

Optionally, the LCD screen sequentially includes a color filter and a liquid crystal cell along a direction in which light is emitted, the color filter and the liquid crystal cell are attached to each other, the CF substrate is attached to a side surface of the color filter, where the color filter is close to the rear fresnel lens, and the TFT substrate is attached to a side surface of the liquid crystal cell, where the liquid crystal cell is close to the front fresnel lens.

Through adopting above-mentioned technical scheme, the direction that the LCD screen sent along light includes color filter and liquid crystal box in proper order, compares in direct with color filter and liquid crystal box direct encapsulation in two polaroids, and the encapsulation process of LCD screen is simpler among this technical scheme, and is more nimble in the cooperation in-process with light gain module or polarisation module.

Optionally, the rear fresnel lens and the front fresnel lens face towards one side where the LCD module is located are plane mirrors, and the rear fresnel lens and the front fresnel lens are far away from one side where the LCD module is located are convex lenses.

Through adopting above-mentioned technical scheme, the one side that back fresnel lens located towards the LCD module is the level crossing, and the one side that back fresnel lens kept away from the LCD module place is convex lens, and the light that the LED light source sent becomes the parallel light through back fresnel lens collimation. The one side that preceding fresnel lens was located towards the LCD module is the level crossing, and preceding fresnel lens keeps away from the one side at LCD module place for convex lens to make parallel polarized light P can be focused on in the camera lens.

Optionally, the light gain module includes a quantum dot unit formed on the rear fresnel lens, and the quantum dot unit is attached to a side surface of the rear fresnel lens near the light hopper, or the quantum dot unit is integrally formed in the rear fresnel lens.

By adopting the technical means, the quantum dot unit is attached to the side face, close to the light hopper, of the rear Fresnel lens or is integrally formed in the rear Fresnel lens, so that the color saturation of the optical fiber in the light hopper can be increased when the optical fiber passes through the quantum dot unit, and the color saturation of the projector is improved.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the parallel polarized light P can pass through the light gain module, and the non-parallel polarized light S will be reflected back into the light hopper by the first APCF film and the first reflective film substrate. Because the LED light source is attached to the incident end and completely shields the incident end, the rear Fresnel lens is attached to the emergent end and completely shields the emergent end, a closed environment is formed in the light hopper, and the non-parallel polarized light S is converted into parallel polarized light P after being reflected for a plurality of times in the light hopper and passes through the light gain module, so that the effect of improving the brightness of the projector is achieved. On the other hand, the LCD module does not comprise a polarizing film, and the light gain module reflects the non-parallel polarized light S but does not absorb the non-parallel polarized light S, so that the problem of heating of the light gain module is reduced on the basis of improving the brightness of the projector, and the display characteristic of the projector is improved;

2. the light-emitting direction of the second APCF film is consistent with that of the first APCF film, and the second APCF film can reflect the non-parallel polarized light S back to the light hopper, so that the problem of waste heat generated when the polarizing film absorbs the non-parallel polarized light S is solved, and the display brightness of the projector is further improved;

3. the effective area of the incident end of light fill is greater than the effective area of exit end to make the incline direction of light fill inner wall crescent towards one side at exit end place, and the inboard of light fill is confined specular reflection aluminium membrane, when non-parallel polarized light S got into the light fill along the direction opposite with light emission direction, reflection angle more did benefit to non-parallel polarized light S and carries out continuous reflection and directive rear fresnel lens in the light fill, improves the reflection efficiency of light.

Drawings

Fig. 1 is a schematic diagram of an optical path of a projector in embodiment 1 of the present application;

fig. 2 is a schematic diagram of an optical path of a projector in embodiment 2 of the present application;

fig. 3 is a schematic optical path diagram of a projector according to embodiment 3 of the present application;

fig. 4 is a schematic optical path diagram of a projector according to embodiment 4 of the present application;

FIG. 5 is a schematic diagram showing an optical path of a projector according to embodiment 5 of the present application;

fig. 6 is a schematic diagram of an optical path of a projector in embodiment 6 of the present application.

Description of the reference numerals:

100. an LED light source;

200. a light hopper; 210. an incident end; 220. an exit end;

300. a rear Fresnel lens;

400. a light gain module; 410. an APCF unit; 411. a first APCF film; 412. a first reflective film substrate;

500. an LCD module; 510. a CF substrate; 520. an LCD screen; 521. a color filter; 522. a liquid crystal cell; 530. a TFT substrate;

600. a polarization module; 610. a polarizing substrate; 620. a polarizing film; 630. a second APCF film; 640. a second reflective film substrate;

700. a front Fresnel lens;

800. a lens;

900. a quantum dot unit; 910. a quantum dot film; 920. a quantum dot particle.

Detailed Description

The present application is described in further detail below with reference to figures 1-6.

Example 1:

the embodiment of the application discloses promote projecting apparatus of monolithic LCD screen performance.

Referring to fig. 1, a projector for improving performance of a single liquid crystal display sequentially includes an LED light source 100, a light hopper 200, a rear fresnel lens 300, a light gain module 400, an LCD module 500, a polarization module 600, a front fresnel lens 700, and a lens 800 along a light emitting direction. The LED light source 100 is used to provide a light source. The light emitted from the LED light source 100 is directed toward the lens 800 along the LED light source 100, and the light emitted from the LED light source 100 passes through the light hopper 200, the rear fresnel lens 300, the light gain module 400, the LCD module 500, the polarization module 600, and the front fresnel lens 700 in sequence and then is emitted from the lens 800.

Referring to fig. 1, the light hopper 200 has an incident end 210 and an exit end 220, in this embodiment, the light hopper 200 is a quadrangular frustum pyramid, and the incident end 210 and the exit end 220 of the light hopper 200 are both rectangular. The effective area of the incident end 210 of the light funnel 200 is larger than the effective area of the exit end 220, so that the inclined direction of the inner wall of the light funnel 200 gradually increases toward the side where the exit end 220 is located, and the inner side of the light funnel 200 is a closed specular reflection aluminum film. The LED light source 100 is attached to the incident end 210 and completely covers the incident end 210, and the rear fresnel lens 300 is attached to the exit end 220 and completely covers the exit end 220. The LED light source 100 is disposed at a focal point of the rear fresnel lens 300, so that the rear fresnel lens 300 collimates light.

Referring to fig. 1, the rear fresnel lens 300 is disposed in a circular disc shape, and the diameter of the rear fresnel lens 300 is larger than the diameter of the exit end 220 of the funnel 200. The surface of the rear fresnel lens 300 away from the LED light source 100 is a plane mirror, the surface of the rear fresnel lens 300 close to the LED light source 100 is a convex lens, and the light emitted from the LED light source 100 is collimated into parallel light by the rear fresnel lens 300 and enters the light gain module 400.

Referring to fig. 1, in the light gain module 400, one side of the first APCF film 411 and the first reflective film substrate 412 are attached to the surface of the rear fresnel lens 300 away from the LED light source 100, and the other side of the first APCF film 411 and the first reflective film substrate 412 are attached to each other. In the embodiment, the first APCF film 411 is a reflective polarizer with a brightness enhancement film, the parallel polarized light P can pass through the light gain module 400, and the non-parallel polarized light S will be reflected back into the light hopper 200 by the light gain module 400.

Referring to fig. 1, the LCD module 500 includes a CF substrate 510, an LCD panel 520, and a TFT substrate 530, wherein the CF substrate 510 and the first reflective film substrate 412 are bonded to each other, and the LCD panel 520 is disposed between the CF substrate 510 and the TFT substrate 530. The LCD panel 520 sequentially includes a color filter 521 and a liquid crystal cell 522 along the direction of light emission, the color filter 521 and the liquid crystal cell 522 are bonded to each other, the CF substrate 510 is bonded to the side of the color filter 521 near the rear fresnel lens 300, and the TFT substrate 530 is bonded to the side of the liquid crystal cell 522 near the front fresnel lens 700. In the present embodiment, the CF substrate 510 is represented as a Color Filter 521 (Color Filter) substrate, and the TFT substrate 530 is represented as a Thin Film Transistor (Thin Film Transistor) substrate.

Referring to fig. 1, the polarization module 600 includes a polarization substrate 610 and a polarization film 620, the polarization substrate 610 is attached to the side of the TFT substrate 530 away from the LCD screen 520, the polarization film 620 is attached to the side of the polarization substrate 610 away from the TFT substrate 530, and the light emitting direction of the polarization film 620 is the same as the light emitting direction of the first APCF film 411. Thereby ensuring the maximum brightness of the light passing through, and improving the display brightness of the projector.

Referring to fig. 1, the front fresnel lens 700 is a circular disc, the diameter of the front fresnel lens 700 is equal to the diameter of the rear fresnel lens 300, and the central axis of the front fresnel lens 700 and the central axis of the rear fresnel lens 300 are located on the same straight line. The side of the front fresnel lens 700 facing the LCD module 500 is a flat mirror, and the side of the front fresnel lens 700 facing away from the LCD module 500 is a convex lens, so that the parallel polarized light P can be focused into the lens 800. The lens 800 is disposed at a focus of the front fresnel lens 700, so that the front fresnel lens 700 focuses light, and an imaging effect of the projector is improved.

The implementation principle of the projector for improving the performance of the single liquid crystal display screen in embodiment 1 of the application is as follows: the light emitted from the LED light source 100 sequentially passes through the light hopper 200, the rear fresnel lens 300, the light gain module 400, the LCD module 500, the polarization module 600, and the front fresnel lens 700 and then is irradiated out of the lens 800, the parallel polarized light P passing through the rear fresnel lens 300 can pass through the light gain module 400, and the non-parallel polarized light S is reflected back into the light hopper 200 by the light gain module 400. When the non-parallel polarized light S enters the light hopper 200 along the direction opposite to the light emitting direction, the reflection angle is more favorable for the non-parallel polarized light S to continuously reflect in the light hopper 200 and emit to the rear fresnel lens 300, thereby improving the reflection efficiency of the light. Because the LED light source 100 is attached to the incident end 210 and completely shields the incident end 210, the rear fresnel lens 300 is attached to the exit end 220 and completely shields the exit end 220, a closed environment is formed in the light hopper 200, and the non-parallel polarized light S is converted into parallel polarized light P after being reflected for a plurality of times in the light hopper 200 and passes through the light gain module 400, thereby achieving the effect of improving the brightness of the projector. On the other hand, the LCD module 500 does not include the polarizing film 620, and the light gain module 400 reflects the non-parallel polarized light S without absorbing it, so that the problem of heat generation of the light gain module 400 is reduced on the basis of improving the brightness of the projector, and the display characteristics of the projector are improved.

Example 2:

referring to fig. 2, a difference between the embodiment 2 and the embodiment 1 is that the polarization module 600 includes a second APCF film 630 and a second reflective film substrate 640, the second APCF film 630 is attached to a side of the TFT substrate 530 far from the LCD panel 520, the second reflective film substrate 640 is attached to a side of the second APCF film 630 far from the TFT substrate 530, such that one side of the LCD module 500 is the first APCF film 411 and the first reflective film substrate 412, the other side of the LCD module 500 is the second APCF film 630 and the second reflective film substrate 640, and a light-emitting direction of the second APCF film 630 is consistent with a light-emitting direction of the first APCF film 411, and the second APCF film 630 can reflect the non-parallel polarized light S back to the light hopper 200, so as to improve a waste heat problem generated by the non-parallel polarized light S absorbed by the polarization film 620, and further improve a display brightness of the projector.

The implementation principle of the projector for improving the performance of the single-chip liquid crystal display screen in embodiment 1 of the application is as follows: by replacing the polarizing film 620 in the polarizing module 600 in embodiment 1 with the second APCF film 630, the non-parallel polarized light S generated after the light passes through the LCD module 500 can be reflected back into the light funnel 200, so as to improve the waste heat problem of the polarizing film 620 and further improve the display brightness of the projector.

Example 3:

referring to fig. 3, the difference between embodiment 3 and embodiment 1 of the present application is that the light gain module 400 sequentially includes two APCF units 410 along the direction of light emission. One first APCF film 411 and one first reflective film substrate 412 form one APCF unit 410, so that two APCF units 410 are disposed on one side of the LCD module 500, and a polarizer film 620 and a polarizer substrate 610 are disposed on the other side of the LCD module 500. By adopting the structure of two APCF units 410, the non-parallel polarized light S entering the LCD module 500 can be further reduced, the brightness of the projector can be improved, the contrast value of the projector can be increased, the waste heat generation of the projector can be reduced, and the requirement of the cooling fan can be reduced.

Example 4:

referring to fig. 4, embodiment 4 of the present application differs from embodiment 2 in that the light gain module 400 sequentially includes two APCF units 410 along the direction of light emission. One first APCF film 411 and one first reflective film substrate 412 form one APCF unit 410, so that two APCF units 410 are arranged on one side of the LCD module 500, the second APCF film 630 and the second reflective film substrate 640 are arranged on the other side of the LCD module 500, and the polarizing film 620 and the polarizing substrate 610 are replaced by the second APCF film 630 and the second reflective film substrate 640, thereby optimizing the problem of heat accumulation caused by the non-parallel polarized light S absorbed by the polarizing film 620. By adopting the structure of two APCF units 410, the non-parallel polarized light S entering the LCD module 500 can be further reduced, the brightness of the projector can be improved, the contrast value of the projector can be increased, the waste heat generation of the projector can be reduced, and the requirement of the cooling fan can be reduced.

Example 5:

referring to fig. 5, a difference between embodiment 5 and embodiment 1 of the present application is that the light gain module 400 includes a quantum dot unit 900 formed on the rear fresnel lens 300, in this embodiment, the quantum dot unit 900 is a quantum dot film 910, and the quantum dot film 910 is adhered to a side surface of the rear fresnel lens 300 close to the light hopper 200 through an optical adhesive. After light passes through the rear Fresnel lens 300 adhered with the quantum dot film 910, the color saturation of the light can be improved, so that the color display effect of the projector is better

Example 6:

referring to fig. 6, a difference between embodiment 6 and embodiment 5 of the present application is that the quantum dot unit 900 is integrally formed in the rear fresnel lens 300, and in this embodiment, the quantum dot unit 900 is a plurality of quantum dot particles 920 uniformly distributed in the rear fresnel lens 300. After light passes through the rear Fresnel lens 300 with the quantum dot particles 920 uniformly distributed, the color saturation of the light can be improved, and therefore the color display effect of the projector is better.

The above are preferred embodiments of the present application, and the scope of protection of the present application is not limited thereby. Wherein like parts are designated by like reference numerals. It should be noted that as used in the foregoing description, the terms "front," "back," "left," "right," "upper" and "lower" refer to directions in the drawings, and the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component. Therefore, the method comprises the following steps: equivalent changes in structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (9)

1. A projector for improving the performance of a single-chip liquid crystal screen is characterized by sequentially comprising an LED light source (100), a light hopper (200), a rear Fresnel lens (300), a light gain module (400), an LCD module (500), a polarization module (600), a front Fresnel lens (700) and a lens (800) along the direction of light emission;

the light hopper (200) is provided with an incident end (210) and an emergent end (220), the LED light source (100) is attached to the incident end (210) and completely shields the incident end (210), and the rear Fresnel lens (300) is attached to the emergent end (220) and completely shields the emergent end (220);

the LCD module (500) comprises a CF substrate (510), an LCD screen (520) and a TFT substrate (530), wherein the CF substrate (510) is attached to the light gain module (400), and the polarization module (600) is attached to the TFT substrate (530).

2. The projector as claimed in claim 1, wherein the light gain module (400) comprises a first APCF film (411) attached to a side of the rear fresnel lens (300) away from the LED light source (100) and a first reflective film substrate (412) attached to a side of the first APCF film (411) away from the rear fresnel lens (300).

3. The projector as claimed in claim 2, wherein the polarization module (600) includes a polarization substrate (610) and a polarization film (620), the polarization substrate (610) is attached to a side of the TFT substrate (530) away from the LCD screen (520), the polarization film (620) is attached to a side of the polarization substrate (610) away from the TFT substrate (530), and a light-emitting direction of the polarization film (620) is the same as a light-emitting direction of the first APCF film (411).

4. The projector as claimed in claim 2, wherein the polarization module (600) comprises a second APCF film (630) attached to a side of the TFT substrate (530) away from the LCD panel (520) and a second reflective film substrate (640) attached to a side of the second APCF film (630) away from the TFT substrate (530), and a light-emitting direction of the second APCF film (630) is the same as a light-emitting direction of the first APCF film (411).

5. A projector as claimed in any one of claims 3 to 4, wherein one of the first APCF films (411) and one of the first reflective film substrates (412) form one APCF unit (410), and the light gain module (400) sequentially comprises two APCF units (410) along the direction of light emission.

6. The projector for improving the performance of the monolithic liquid crystal screen according to claim 2, wherein the effective area of the incident end (210) of the light funnel (200) is larger than the effective area of the emergent end (220), and the inner side of the light funnel (200) is a closed mirror reflection aluminum film.

7. The projector as claimed in claim 2, wherein the LCD panel (520) sequentially comprises a color filter (521) and a liquid crystal cell (522) along a light emitting direction, the color filter (521) and the liquid crystal cell (522) are bonded to each other, the CF substrate (510) is bonded to a side of the color filter (521) near the rear fresnel lens (300), and the TFT substrate (530) is bonded to a side of the liquid crystal cell (522) near the front fresnel lens (700).

8. The projector as claimed in claim 2, wherein the rear fresnel lens (300) and the front fresnel lens (700) are flat mirrors on the side facing the LCD module (500), and the rear fresnel lens (300) and the front fresnel lens (700) are convex lenses on the side facing away from the LCD module (500).

9. The projector as claimed in claim 1, wherein the light gain module (400) includes a quantum dot unit (900) formed on the rear fresnel lens (300), the quantum dot unit (900) is attached to a side surface of the rear fresnel lens (300) near the light hopper (200), or the quantum dot unit (900) is integrally formed in the rear fresnel lens (300).

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