CN217443723U - Structure for improving LCD projection equipment color gamut value - Google Patents

Abstract

The utility model discloses a structure for improving LCD projection equipment colour gamut value, this structure is applied to monolithic LCD projecting apparatus or 3LCD projecting apparatus, include: the LED light source module comprises an LED matrix group for generating a blue light source, a quantum structure light guide plate for the blue light source to pass through and an optical module, wherein the quantum structure light guide plate comprises a quantum dot diffusion plate or a quantum membrane. The utility model discloses utilize the blue light to arouse quantum diaphragm or quantum dot diffuser plate and produce white light, it has narrower half-wave width, and the colour is more pure, can present better color rendering and color gamut value, through the optical module group that diaphragm collocation and optical lens combination constitute, has promoted LCD projection equipment's luminance value.

Description

Structure for improving LCD projection equipment color gamut value

Technical Field

The utility model relates to a projection equipment technical field, more specifically the structure that is used for improving LCD projection equipment colour gamut value that says so.

Background

Currently, LCD projector apparatuses in the market are classified into a single-chip LCD projector and three-chip LCD projector according to the number of LCD screens. The single-chip LCD projector has the working principle that the backlight part of the LCD panel is detached, then a high-power backlight source is used for irradiating the LCD panel through the condensing lens, and the LCD panel is light-transmitting, so that a picture can be irradiated out, and the picture is shot on a screen through the focusing lens and the lens in front to form an image. In addition, a three-piece LCD projector is disclosed, which is based on the principle that light emitted from a light source passes through a filter to filter out invisible light which has certain damage to an LCD piece, such as infrared rays and ultraviolet rays, the light is homogenized through two multi-lens lenses, conical light generated by the light source is corrected into rectangular light which is similar to a projected image, a prism between the two mirrors is used for pre-polarizing the light, compared with an asymmetric light box without the prism, the loss of the light can be reduced, the light is further divided into three primary colors of red, green and blue by a spectroscope and is respectively reflected to corresponding liquid crystal plates, the light needs to pass through a convex lens and a polarizing plate before reaching the liquid crystal plates, the convex lens is used for concentrating the light, the polarizing plate is used for further polarizing the light, so that the vibration directions of the light are consistent, the light can be controlled by the liquid crystal plates, and finally the light passes through the liquid crystal plates, through the drive of circuit board, each pixel on the liquid crystal display is opened and close in order, has produced the image to through the timing of every primary color light produced abundant color, three routes light finally converges and is thrown away by the camera lens together.

However, with conventional LCD projectors including the above two LCD projectors, the color gamut value of the projection device is low, resulting in low luminance of the LCD projector.

Therefore, how to improve the brightness of the LCD projector is a problem that needs to be solved by those skilled in the art to provide a structure for improving the color gamut of the LCD projector.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention provides a structure for improving the color gamut of an LCD projector, so as to solve the technical problem of low luminance of the LCD projector existing in the background art.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a structure for improving a color gamut value of an LCD projection device, the structure being applied to a single-chip LCD projector or a 3LCD projector, comprising: the LED array light source comprises an LED matrix group used for generating a blue light source, a quantum structure light guide plate through which the blue light source passes and an optical module, wherein the quantum structure light guide plate comprises a quantum dot diffusion plate or a quantum membrane.

Preferably, the LED matrix set for generating the blue light source includes a blue MINI LED matrix set or a blue micro LED matrix set.

Preferably, a single blue MINI LED in the blue MINI LED matrix group adopts a COB or POB packaging process.

Preferably, when the structure is applied to a single-chip LCD projector, the optical module includes a light-collecting cup, a prism sheet, a first fresnel lens, a glass sheet with a polarizing film attached thereto, an LCD screen, a second fresnel lens, a reflector and a lens, wherein a blue light source generated by the LED matrix group sequentially passes through the light-collecting cup, the quantum-structure light guide plate, the prism sheet, the first fresnel lens, the glass sheet with a polarizing film attached thereto, the LCD screen, the second fresnel lens, the reflector and the lens.

Preferably, a single blue MINI LED in the blue MINI LED matrix group adopts a COB or POB packaging process.

Preferably, when the structure is applied to a single-chip LCD projector, the structure further comprises a light-gathering cup, a blue light source generated by the LED matrix group is excited to generate white light sequentially through the light-gathering cup and the quantum structure light guide plate, and the optical module comprises a prism sheet, a first Fresnel lens, a glass sheet with a polarizing film, an LCD screen, a second Fresnel lens, a reflector and a lens, wherein the prism sheet, the first Fresnel lens, the glass sheet with the polarizing film, the LCD screen, the second Fresnel lens, the reflector and the lens are sequentially connected with the white light.

Preferably, when the structure is applied to a 3LCD projector, the optical module includes three sets of light splitting lenses, three sets of condensing lenses, three sets of LCD screens, a prism and a lens, a blue light source generated by the LED matrix set is excited by the quantum structure light guide plate to generate white light, the three sets of light splitting lenses are used for dividing the white light into R, G, B three primary colors, the three sets of condensing lenses are used for condensing R, G, B three primary colors, the three sets of LCD screens are used for receiving R, G, B three primary colors after condensing, and the prism is located in the middle of a space formed by the three sets of LCD screens and used for mixing R, G, B three primary colors.

According to the above technical scheme, compare with prior art, the utility model discloses a structure for improving LCD projection equipment colour gamut value has following beneficial effect:

the light guide plate with the quantum structure is excited by blue light generated by the LED matrix group to generate white light, the white light has narrow half-wave width and purer color, better color rendering property and color gamut value can be presented, the brightness value of the LCD projection equipment is improved after an optical module formed by matching of the films and combining of optical lenses, MINI LED or micro LED single wafers adopted by the LED matrix group are smaller in current, higher in light efficiency and smaller in wafer spacing, and the formed surface light source is higher in uniformity.

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 embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

Fig. 1 is a schematic view of the overall structure of the single-chip LCD projector according to the present invention;

fig. 2 is a schematic view of the overall structure provided by the present invention.

Fig. 3 is the overall structure schematic diagram of the 3LCD projector provided by the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example one

As shown in fig. 1, the first embodiment discloses a structure for improving color gamut of an LCD projection device, applied to a single-chip LCD projector, comprising: the LED matrix group is used for generating a blue light source, the quantum structure light guide plate 3 is used for the blue light source to pass through, and the optical module is used for the blue light source to pass through.

In the first embodiment, the LED matrix set for generating the blue light source is specifically the blue MINI LED matrix set 1, and the quantum dot diffusion plate or the quantum film may be used as the quantum structure light guide plate 3.

In the first embodiment, the structure for improving the color gamut value of the LCD projection device further includes a light-collecting cup 2, the light-collecting cup 2 is located in the middle of the blue MINI LED matrix group 1 and the quantum structure light guide plate 3, a blue light source generated by the blue MINI LED matrix group 1 passes through the light-collecting cup 2 and then is excited by the quantum structure light guide plate 3 to generate white light, the optical module specifically includes a prism sheet 4, a first fresnel lens 5, a glass sheet 6 attached with a polarizing film, an LCD screen 7, a second fresnel lens 8, a reflective mirror 9 and a lens 10, wherein the white light generated by excitation passes through the prism sheet 4, the first fresnel lens 5, the glass sheet 6 attached with a polarizing film, the LCD screen 7, the second fresnel lens 8, the reflective mirror 9 and the lens 10 in sequence.

The specific principle of the first embodiment is that a blue surface light source generated by the blue light MINI LED matrix group 1 is firstly condensed by the condensing cup 2 to reach the quantum structure light guide plate 3, at this time, the blue light source is excited to be white light, the brightness of the white light is increased by the prism sheet 4, the white light passes through the glass sheet 6 attached with the polarizing film through the first fresnel lens condenser 5 and reaches the LCD screen 7, the LCD screen 7 transmits a required picture according to liquid crystal deflection, the white light passes through the second fresnel lens 8 for condensing again, and the white light passes through the reflector 9 and reaches the lens 10, so that the blue surface light source is projected to a curtain or a wall surface. In the embodiment, the light guide plate 3 with the quantum structure, which is formed by the blue light excited quantum film or the quantum dot diffusion plate, is converted into white light, and then the brightness gain is improved by matching with the prism sheet 4, so that the brightness and the color block richness after the liquid crystal deflection are improved.

In a first embodiment, a single blue MINI LED in a blue MINI LED matrix group is packaged by a COB or POB packaging process, and the single blue MINI LED matrix is arranged as shown in fig. 2.

Example two

The second embodiment discloses a structure for improving the color gamut value of LCD projection equipment, which is also applied to a single-chip LCD projector, and the difference from the first embodiment lies in that in the second embodiment, an LED matrix group adopts a blue light micro LED matrix group with a smaller volume, and a blue light source generated by the blue light micro LED matrix group sequentially passes through a condensing cup, a quantum dot diffusion plate or a quantum diaphragm, a prism sheet, a first Fresnel lens, a glass sheet with a polarizing film, an LCD screen, a second Fresnel lens, a reflector and a lens.

EXAMPLE III

As shown in fig. 3, the third embodiment discloses a structure for improving a color gamut value of an LCD projection device, which is applied to a 3LCD projector, and includes a blue MINI LED matrix group 1 for generating a blue light source, a quantum structure light guide plate 3 through which the blue light source passes, and an optical module, where the optical module specifically includes a beam splitter lens group composed of a first beam splitter lens 101, a second beam splitter lens 102, and a third beam splitter lens 103; a condenser lens group consisting of a first condenser lens 201, a second condenser lens 202 and a third condenser lens 203; the LCD screen group comprises a first LCD screen 301, a second LCD screen 302 and a third LCD screen 303; a prism 400 and a lens 10 which are arranged in the middle space of the LCD screen group.

The blue light source generated by the blue MINI LED matrix group 1 is excited by the quantum structure light guide plate 3 to generate white light, the white light is decomposed into R, G, B three primary colors by the beam splitter group, the three primary colors are condensed by the corresponding condenser lenses and then transmitted to the corresponding LCD screens, and R, G, B three primary colors of light are mixed by the prism 400 in the middle of the LCD screens and then projected to images with different colors.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (5)

1. An arrangement for improving the color gamut value of an LCD projection device, said arrangement being applied to a single-chip LCD projector or a 3LCD projector, comprising: the LED array light source comprises an LED matrix group used for generating a blue light source, a quantum structure light guide plate through which the blue light source passes and an optical module, wherein the quantum structure light guide plate comprises a quantum dot diffusion plate or a quantum membrane.

2. The structure for improving color gamut values of an LCD projection device according to claim 1, wherein the LED matrix set for generating the blue light source comprises a blue MINI LED matrix set or a blue micro LED matrix set.

3. The structure for improving color gamut values of an LCD projection device according to claim 2, wherein a single blue MINI LED in the matrix set of blue MINI LEDs is packaged by COB or POB.

4. The structure for improving the color gamut of an LCD projection device according to claim 1, wherein when the structure is applied to a single-chip LCD projector, the structure further comprises a light-gathering cup, a blue light source generated by the LED matrix group is excited by the light-gathering cup and a quantum structure light guide plate in sequence to generate white light, and the optical module comprises a prism sheet, a first Fresnel lens, a glass sheet attached with a polarizing film, an LCD screen, a second Fresnel lens, a reflector and a lens in sequence.

5. The structure of claim 1, wherein the optical module comprises three groups of light splitting lenses, three groups of condensing lenses, three groups of LCD screens, a prism and a lens, the blue light source generated by the LED matrix group is excited by the light guide plate with quantum structure to generate white light, the three groups of light splitting lenses are used for splitting the white light into R, G, B three primary colors, the three groups of condensing lenses are used for condensing R, G, B three primary colors, the three groups of LCD screens are used for receiving R, G, B three primary colors after condensing, and the prism is located in the middle of the space formed by the three groups of LCD screens and is used for mixing R, G, B three primary colors.

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