CN112946975A - Single-chip LCD projection structure, projector and projection method - Google Patents

Single-chip LCD projection structure, projector and projection method Download PDF

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Publication number
CN112946975A
CN112946975A CN202110334964.XA CN202110334964A CN112946975A CN 112946975 A CN112946975 A CN 112946975A CN 202110334964 A CN202110334964 A CN 202110334964A CN 112946975 A CN112946975 A CN 112946975A
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liquid crystal
black
lcd
projection
white
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吴希亮
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Fengmi Beijing Technology Co ltd
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Fengmi Beijing Technology Co ltd
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    • 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
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
    • G09G3/3607—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals for displaying colours or for displaying grey scales with a specific pixel layout, e.g. using sub-pixels

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  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Computer Hardware Design (AREA)
  • Theoretical Computer Science (AREA)
  • Liquid Crystal Display Device Control (AREA)

Abstract

The invention relates to a single-chip LCD projection structure, a projector and a projection method. Belongs to the technical field of projection display. The single-chip LCD projection structure comprises: the device comprises a solid light source for generating RGB three primary colors, a black-white LCD (liquid crystal display), a light receiving lens and a projection lens; the three primary colors generated by the solid-state light source are respectively and independently irradiated on the black-and-white LCD liquid crystal screen, pass through the black-and-white LCD liquid crystal screen and are irradiated on the light receiving lens, are converged by the light receiving lens and are irradiated on the projection lens, and a projection picture is formed through the projection lens. The invention also provides a single-chip LCD projector and a single-chip LCD projection method. This monolithic LCD projection structure can promote the luminance of monolithic formula LCD projection product by a wide margin, improves the not enough problem of current monolithic LCD projection product luminance.

Description

Single-chip LCD projection structure, projector and projection method
Technical Field
The invention belongs to the technical field of projection display, and particularly relates to a single-chip LCD projection structure, a projector and a projection method.
Background
The single-chip LCD projector refers to a projection device with only one LCD liquid crystal screen.
The working principle of the single-chip LCD projection equipment in the market at present is as follows: the small-angle white light beam is used as an illumination light source and irradiates a full-color and transmission type LCD liquid crystal screen, and an image of the LCD liquid crystal screen is enlarged and projected onto a screen through a projection lens. The color image display of the current single-chip LCD projection equipment is completely realized by a full-color LCD liquid crystal screen. In order to realize color display, a color film is required to be added to a full-color LCD, each red, green and blue small color block on the color film corresponds to one small liquid crystal pixel, the three small pixels respectively have different gray scale changes, and then the adjacent three small pixels are taken as a basic unit for display, namely a pixel (pixel), and the pixel can have different color changes.
However, since the illumination light source is white light, a small color patch on a color film of the full-color LCD panel can only transmit light of one color, and other light that cannot be transmitted can be absorbed or reflected, which results in a transmittance of only 30% when the white light transmits through the color film, and in addition, a transmittance loss of other optical layers results in a low overall transmittance of the whole full-color LCD panel, and generally, a total transmittance of a 1080p resolution full-color LCD panel below 5 inches is only about 5.6%. Resulting in low screen brightness. If increase luminance through improving light source power, again can lead to the operating temperature of full-color LCD screen to rise, lead to equipment overheat to damage easily to current monolithic LCD projection equipment's result of use is not good.
At present, a white light source is adopted to match a color wheel with RGB and a transparent filter with a black-white single-chip LCD panel to solve the problem of brightness, color light generated by the color wheel is collected and collimated by a lens and then irradiates the black-white single-chip LCD panel, light penetrating through the LCD panel enters a projection lens after being reflected by a reflector plate, and the light is amplified and imaged on a projection screen. Although the technical structure overcomes the problem of low transmittance of a single-chip color LCD projector, the used color wheel needs to be driven to rotate by a mechanical motor, the motor is a movable mechanical part, the rotation frequency of the motor is not fast enough and can only reach 120Hz generally, so that the refresh rate of RGB image signals can only reach 120Hz, a rainbow effect exists when some people watch the color wheel, switching flicker of different colors of picture images can be seen, in addition, the color purity of the white light and the color light generated by the color wheel filtration is not good enough, and the projection effect is still not good.
Disclosure of Invention
The invention provides a single-chip LCD projection structure, a projector and a projection method for solving the technical problems, which can greatly improve the brightness of a single-chip LCD projection product and solve the problem of insufficient brightness of the existing single-chip LCD projection product.
In order to solve the above technical problems, the present invention provides a single-chip LCD projection structure.
The technical scheme for solving the technical problems is as follows: a monolithic LCD projection structure comprising: the device comprises a solid light source for generating RGB three primary colors, a black-white LCD (liquid crystal display), a light receiving lens and a projection lens;
the three primary colors generated by the solid-state light source are respectively and independently irradiated on the black-white LCD liquid crystal screen, pass through the black-white LCD liquid crystal screen and are irradiated on the light receiving lens, the light is collected by the light receiving lens and is irradiated on the projection lens, and a projection picture is formed through the projection lens.
The single-chip LCD projection structure has the beneficial effects that: (1) the projection structure adopts a red, green and blue solid-state light source matched with a black and white LCD (liquid crystal display) screen, so that the projection brightness of the single LCD can be greatly improved, the brightness can be improved by more than 3 times theoretically, the working temperature of the single LCD screen is reduced, and the maximum light power which can be borne by the single LCD screen is improved;
(2) the projection structure can not generate rainbow effect due to insufficient color light switching speed, and simultaneously, the color image generated by the projection structure has more positive color and better color effect;
(3) the projection structure has high reliability and long service life.
On the basis of the technical scheme, the invention can be further improved as follows.
Furthermore, the black-and-white LCD liquid crystal screen is provided with a plurality of display pixel points which are arranged in a matrix.
The beneficial effect of adopting the further scheme is that: the gray scale can be adjusted according to each pixel point of the image, the color adjustment of each pixel is realized, and the display effect is better.
Further, the three primary colors generated by the solid-state light source are switched with each other at a frequency greater than or equal to 60 Hz.
The beneficial effect of adopting the further scheme is that: and is beneficial to better forming full-color images.
Further, the image switching frequency of the black-and-white LCD liquid crystal screen is greater than or equal to 180 Hz.
The beneficial effect of adopting the further scheme is that: it is advantageous to form a dynamic image.
Further, an LCD controller is arranged on the black-and-white LCD liquid crystal screen and controls the gray scale of the display pixel points.
The beneficial effect of adopting the further scheme is that: the gray scale of the display pixel point is more convenient to control.
Further, a polarizer is arranged between the solid-state light source and the light path of the black-and-white LCD liquid crystal screen, and the three primary colors generated by the solid-state light source respectively and independently penetrate through the polarizer and then irradiate on the black-and-white LCD liquid crystal screen.
The beneficial effect of adopting the further scheme is that: the natural light emitted by the light source is converted into linearly polarized light, and the requirement of liquid crystal display is met.
Secondly, the present invention provides a single-chip LCD projector to solve the above technical problems.
Thirdly, the present invention provides a single-chip LCD projection method to solve the above technical problems.
The technical scheme for solving the technical problems is as follows: a single-chip LCD projection method, comprising the steps of:
inputting an image signal, splitting the image signal according to a frame and a picture to obtain a single image, and determining pixel point RGB values of the single image;
inputting the single image into a black-and-white LCD liquid crystal screen, and adjusting the gray scale value and the deflection angle of the black-and-white LCD liquid crystal screen according to the RGB value of the pixel point of the obtained single image;
generating three primary colors of red, green and blue according to the RGB numerical value of the pixel point of the single image, and synchronizing with the gray scale value and the deflection angle of the black-white LCD liquid crystal screen;
RGB red, green and blue three primary colors are irradiated on a black and white LCD liquid crystal screen to form colored images with different color levels.
The single-chip LCD projection method has the beneficial effects that: the projection method can solve the problems of overhigh temperature and insufficient brightness of the traditional single-chip LCD projector, obviously improves the display brightness, and can improve the brightness by more than 3 times. The projection method adopts the fast switching of the RGB of the light source and the image to realize the full-color display, and the full-color image display effect is good.
On the basis of the technical scheme, the invention can be further improved as follows.
Further, adjusting the gray scale value and the deflection angle of the black-white LCD liquid crystal screen according to the RGB value of the pixel point of the obtained single image, and the method comprises the following steps:
an LCD controller on the black-and-white LCD liquid crystal screen obtains RGB values of pixel points of the single image, converts the R value, the G value and the B value into voltage signals, transmits the voltage signals to the black-and-white LCD liquid crystal screen, controls the voltage of display pixel points on the black-and-white LCD liquid crystal screen, and realizes the setting of the gray scale value and the deflection angle of the corresponding display pixel points on the black-and-white LCD liquid crystal screen;
the three primary colors of red, green and blue are generated according to the obtained pixel point RGB numerical value of the single image, and the method specifically comprises the following steps: the LCD controller sends signals to the driver on the solid-state light source in the order of the RGB input signals, and the driver receives the signals and controls the solid-state light source to generate the three-color light source in the same order as the RGB input signals.
The beneficial effect of adopting the further scheme is that: the formation of the red, green and blue monochromatic images is facilitated.
Further, the switching frequency of the gray scale value of the display pixel point on the black-and-white LCD liquid crystal screen is synchronous with the switching frequency of each color in the three primary colors of the solid-state light source.
The beneficial effect of adopting the further scheme is that: the projection display effect is ensured, and deviation is avoided.
Drawings
FIG. 1 is a schematic diagram of the optical path structure of the single-chip LCD projection structure according to the present invention;
FIG. 2 is a schematic diagram of the control process of the single-chip LCD projection method of the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
1. the device comprises a solid-state light source, 2, a polarizer, 3, a black and white LCD liquid crystal screen, 4, a light receiving lens, 5 and a projection lens.
Detailed Description
The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.
Examples
As shown in fig. 1 and 2, the present embodiment provides a single-chip LCD projection structure, including: the device comprises a solid light source 1 for generating RGB three primary colors, a black-white LCD liquid crystal screen 3, a light receiving lens 4 and a projection lens 5;
the three primary colors generated by the solid-state light source 1 are respectively and independently irradiated on the black-and-white LCD liquid crystal screen 3, pass through the black-and-white LCD liquid crystal screen 3 and are irradiated on the light receiving lens 4, are converged by the light receiving lens 4 and are irradiated on the projection lens 5, and form a projection picture through the projection lens 5.
The solid-state light source 1 can stably generate three primary colors of red, green and blue, has uniform brightness and pure color, and does not have the problem of chromatic aberration. The solid-state light source 1 may be an LED light source or a laser light source, but may also be other light sources capable of generating three primary colors of red, green and blue. Compared with a white light source and a color wheel to generate color light, the response speed of the solid-state light source 1 is high, the refresh frequency is over 1000Hz, and when the color wheel is adopted to generate color light for switching, a rainbow effect generated due to insufficient speed cannot occur, the color of the solid-state light source 1 is better than the color of the color light generated by the white light source and the color wheel, and the reliability and the service life of the solid-state light source are much longer than those of a color wheel, which is an active part.
The black-and-white LCD liquid crystal screen 3 is used for developing images, and a color film is not required to be additionally arranged on the black-and-white LCD liquid crystal screen 3, so that the transmittance of light on the black-and-white LCD liquid crystal screen 3 is higher than that of a full-color LCD liquid crystal screen by more than 3 times, the comprehensive transmittance can reach more than 16%, and the brightness of a generated projection picture is high enough.
The light receiving lens 4 is used for converging the light passing through the black-and-white LCD liquid crystal screen 3 onto the projection lens 5, and the light is amplified by the projection lens 5 to form a projection picture. The black-white LCD liquid crystal screen 3, the light receiving lens 4 and the projection lens 5 are all arranged on a light path of light generated by the solid-state light source 1.
The single-chip LCD projection structure has the imaging principle that three primary colors of red, green and blue are generated through the solid-state light source 1, each color is independently irradiated on the black and white LCD liquid crystal screen 3 through switching, then the color is projected on a curtain or a curtain wall through the projection lens 5 to form monochromatic images of different color levels, the monochromatic images generated by the red, green and blue primary colors are respectively superposed under the action of visual retention of human eyes through the rapid switching of the three primary color light sources of the solid-state light source 1 to form a color image. Due to the visual retention of the human eye, when the frame number is switched very fast, the human eye does not recognize the monochrome image. Then, the single image is rapidly switched through the single LCD screen to form a dynamic image, and dynamic projection is completed.
The effect of the technical scheme of this embodiment is that, this projection structure adopts red green blue solid state light source 1 to match black and white LCD screen 3, can increase substantially the projected luminance of monolithic LCD, can improve luminance more than 3 times in theory, reduces the operating temperature of monolithic LCD screen simultaneously, improves the maximum luminous power that monolithic LCD screen can bear. The projection structure can not generate rainbow effect due to insufficient color light switching speed, and the color image generated by the projection structure has more positive color and better color effect. The projection structure has high reliability and long service life.
Preferably, in this embodiment, the black-and-white LCD liquid crystal panel 3 has a plurality of display pixels arranged in a matrix. The gray scale of the display pixel points on the black-and-white LCD liquid crystal screen 3 can be adjusted. The display pixel points correspond to each pixel point of the image, so that the adjustment of the display pixel points on the black-and-white LCD liquid crystal screen 3 can adjust the color gradation of the projected monochromatic image, and the corresponding color is generated when the three primary colors are superposed. The number of display pixel points on the black-and-white LCD liquid crystal screen 3 is related to the resolution, and the higher the resolution is, the more the display pixel points are.
Preferably, in the present embodiment, the frequency at which the three primary colors generated by the solid-state light source 1 are switched with each other is greater than or equal to 60 Hz. The three primary colors can be switched rapidly, so that human eyes cannot recognize monochrome images, and full-color images are formed better.
Preferably, in the present embodiment, the image switching frequency of the black-and-white LCD liquid crystal panel 3 is greater than or equal to 180 Hz. A dynamic image can be formed.
Preferably, in this embodiment, the black-and-white LCD 3 is provided with an LCD controller, and the LCD controller controls gray scales of the display pixels. The gray scale of the display pixel points can be controlled by the arranged LCD controller, and a corresponding monochrome image is formed. The LCD controller is an existing device, and the structure and principle thereof will not be described in detail herein.
Preferably, in this embodiment, a polarizer 2 is further disposed between the solid-state light source 1 and the light path of the black-and-white LCD liquid crystal panel 3, and the three primary colors generated by the solid-state light source 1 respectively and independently pass through the polarizer 2 and then irradiate on the black-and-white LCD liquid crystal panel 3. The natural light emitted by the light source can be converted into linearly polarized light through the arranged polaroid 2, and the display requirement of the liquid crystal screen 3 is met.
The present embodiment also provides a single-chip LCD projector comprising the single-chip LCD projection structure as described above. Of course, a housing, a circuit board, a heat dissipation fan, etc. are also included. The structure of the LCD projector is the same as that of the existing single-chip LCD projector, and redundant description is omitted.
The embodiment also provides a single-chip LCD projection method, which comprises the following steps:
the dynamic image is input through an input signal, the input image signal is split according to a frame and a picture to obtain a single image, and the RGB value of a pixel point of the single image is determined.
And inputting the single image into the black-and-white LCD liquid crystal screen 3, and adjusting the gray scale value and the deflection angle of the black-and-white LCD liquid crystal screen 3 according to the RGB value of the pixel point of the obtained single image. .
The method comprises the following steps of adjusting the gray scale value and the deflection angle of a black-white LCD liquid crystal screen according to the RGB value of the pixel point of the obtained single image, and comprises the following steps:
and the LCD controller on the black-and-white LCD liquid crystal screen obtains the RGB numerical value of the pixel point of the single image, converts the R value, the G value and the B value into voltage signals, transmits the voltage signals to the black-and-white LCD liquid crystal screen, controls the voltage of the display pixel point on the black-and-white LCD liquid crystal screen, and realizes the setting of the gray scale value and the deflection angle of the display pixel point on the corresponding black-and-white LCD liquid crystal screen.
And generating three primary colors of red, green and blue according to the RGB numerical value of the pixel point of the obtained single image, and synchronizing the three primary colors with the gray scale value and the deflection angle of the black-white LCD liquid crystal screen.
The three primary colors of red, green and blue are generated according to the obtained pixel point RGB numerical value of the single image, and specifically: the LCD controller sends signals to the driver on the solid-state light source in the order of the RGB input signals, and the driver receives the signals and controls the solid-state light source to generate the three-color light source in the same order as the RGB input signals.
The switching frequency of the gray scale value of the pixel point on the black-and-white LCD liquid crystal screen 3 is synchronous with the switching frequency of each color in the three primary colors of the solid-state light source 1.
RGB red, green and blue three primary colors are irradiated on the black and white LCD liquid crystal screen 3 to form colored images with different color levels.
It should be noted that, when the black-and-white LCD liquid crystal panel 3 sets the gray scale value of the corresponding display pixel according to the R value, the solid-state light source 1 generates a red light source at this time, and irradiates the black-and-white LCD liquid crystal panel 3, thereby generating red images of different color levels. When the black-and-white LCD liquid crystal panel 3 sets the gray scale value of the corresponding display pixel point according to the G value, the solid-state light source 1 generates a green light source at this time, and irradiates the black-and-white LCD liquid crystal panel 3, thereby generating green images of different color levels. When the black-and-white LCD liquid crystal panel 3 sets the gray scale value of the corresponding display pixel point according to the B value, the solid-state light source 1 generates a blue light source at this time, and irradiates the black-and-white LCD liquid crystal panel 3, thereby generating blue images of different color levels. By superimposing the red, green and blue images, a corresponding full-color image is produced.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings, which are merely for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be construed as limiting the invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the invention, the meaning of "a plurality" is two or more unless otherwise specified.
In the description of the invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "connected" and "connected" are to be construed broadly, e.g. as being fixed or detachable or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the creation of the present invention can be understood by those of ordinary skill in the art through specific situations.
It is to be noted that "comprising" in the present invention means that it may include other components in addition to the components described, and the "comprising" may be replaced with "being" or "consisting of … …" in a closed manner.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims (10)

1. A monolithic LCD projection architecture, comprising: the device comprises a solid-state light source (1) for generating RGB (red, green and blue) three primary colors, a black and white LCD (liquid crystal display) screen (3), a light-receiving lens (4) and a projection lens (5);
the three primary colors generated by the solid-state light source (1) are respectively and independently irradiated on the black-and-white LCD liquid crystal screen (3), pass through the black-and-white LCD liquid crystal screen (3) and are irradiated on the light receiving lens (4), are converged and irradiated on the projection lens (5) through the light receiving lens (4), and form a projection picture through the projection lens (5).
2. The monolithic LCD projection arrangement of claim 1, wherein the black-and-white LCD liquid crystal panel (3) has a plurality of display pixels arranged in a matrix.
3. A monolithic LCD projection arrangement according to claim 2, characterized in that the three primary colors generated by the solid-state light sources (1) are switched with each other at a frequency greater than or equal to 60 Hz.
4. The monolithic LCD projection arrangement of claim 3, wherein the image switching frequency of the black and white LCD liquid crystal screen (3) is greater than or equal to 180 Hz.
5. The single-chip LCD projection structure of claim 4, wherein an LCD controller is arranged on the black-and-white LCD liquid crystal screen (3), and the LCD controller controls the on-off and gray scale of the display pixel points.
6. A single-chip LCD projection arrangement according to any one of claims 1-5, wherein a polarizer (2) is further arranged between the solid-state light source (1) and the black-and-white LCD liquid crystal panel (3), and the three primary colors generated by the solid-state light source (1) respectively and independently pass through the polarizer (2) and then irradiate on the black-and-white LCD liquid crystal panel (3).
7. A monolithic LCD projector, characterized in that it comprises a monolithic LCD projection structure as claimed in any one of claims 1 to 6.
8. A single-chip LCD projection method, comprising the steps of:
inputting an image signal, splitting the image signal according to a frame and a picture to obtain a single image, and determining pixel point RGB values of the single image;
inputting the single image into a black-and-white LCD liquid crystal screen, and adjusting the gray scale value and the deflection angle of the black-and-white LCD liquid crystal screen according to the RGB value of the pixel point of the obtained single image;
generating three primary colors of red, green and blue according to the RGB numerical value of the pixel point of the single image, and synchronizing with the gray scale value and the deflection angle of the black-white LCD liquid crystal screen;
RGB red, green and blue three primary colors are irradiated on a black and white LCD liquid crystal screen to form colored images with different color levels.
9. The single-chip LCD projection method of claim 8, wherein the adjusting of the gray scale value and the deflection angle of the black-and-white LCD liquid crystal screen according to the RGB values of the pixels of the obtained single image comprises the following steps:
an LCD controller on the black-and-white LCD liquid crystal screen obtains RGB values of pixel points of the single image, converts the R value, the G value and the B value into voltage signals, transmits the voltage signals to the black-and-white LCD liquid crystal screen, controls the voltage of display pixel points on the black-and-white LCD liquid crystal screen, and realizes the setting of the gray scale value and the deflection angle of the corresponding display pixel points on the black-and-white LCD liquid crystal screen;
the three primary colors of red, green and blue are generated according to the obtained pixel point RGB numerical value of the single image, and the method specifically comprises the following steps: the LCD controller sends signals to the driver on the solid-state light source in the order of the RGB input signals, and the driver receives the signals and controls the solid-state light source to generate the three-color light source in the same order as the RGB input signals.
10. The single-chip LCD projection method of claim 9, wherein the switching frequency of the gray-scale values of the display pixels on the black-and-white LCD liquid crystal panel is synchronized with the switching frequency of each of the three primary colors of the solid-state light source.
CN202110334964.XA 2021-03-29 2021-03-29 Single-chip LCD projection structure, projector and projection method Pending CN112946975A (en)

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CN114185235A (en) * 2021-12-08 2022-03-15 深圳市科金明电子股份有限公司 High color gamut coverage 2LCD projection device
CN114185233A (en) * 2021-12-08 2022-03-15 深圳市科金明电子股份有限公司 2LCD projection method and projection device
CN114326268A (en) * 2022-01-30 2022-04-12 京东方科技集团股份有限公司 Projection device, and projection driving method and device
CN114630092A (en) * 2022-03-15 2022-06-14 深圳市大兴业源科技有限公司 Method and system for improving brightness of single-chip LCD projector
CN116564245A (en) * 2023-05-19 2023-08-08 深圳市龙源智慧显控有限公司 Multi-partition light source projection device, system and control method based on time domain

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Publication number Priority date Publication date Assignee Title
CN114185235A (en) * 2021-12-08 2022-03-15 深圳市科金明电子股份有限公司 High color gamut coverage 2LCD projection device
CN114185233A (en) * 2021-12-08 2022-03-15 深圳市科金明电子股份有限公司 2LCD projection method and projection device
CN114326268A (en) * 2022-01-30 2022-04-12 京东方科技集团股份有限公司 Projection device, and projection driving method and device
CN114630092A (en) * 2022-03-15 2022-06-14 深圳市大兴业源科技有限公司 Method and system for improving brightness of single-chip LCD projector
CN116564245A (en) * 2023-05-19 2023-08-08 深圳市龙源智慧显控有限公司 Multi-partition light source projection device, system and control method based on time domain
CN116564245B (en) * 2023-05-19 2024-04-26 深圳市龙源智慧显控有限公司 Multi-partition light source projection device, system and control method based on time domain

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