CN112634794B

CN112634794B - Non-grid pixel light-emitting display device and display method thereof

Info

Publication number: CN112634794B
Application number: CN202011574657.0A
Authority: CN
Inventors: 程波涛
Original assignee: Suzhou Shiao Optoelectronic Technology Co ltd
Current assignee: Suzhou Shiao Optoelectronic Technology Co ltd
Priority date: 2020-12-28
Filing date: 2020-12-28
Publication date: 2022-10-28
Anticipated expiration: 2040-12-28
Also published as: CN112634794A

Abstract

The invention discloses a non-grid pixel luminous display device and a display method thereof. The display screen is made of a fluorescent luminescent material, and a grid and pixel physical structure is removed, so that the projected characteristic light can be subjected to composite intensity spectrum processing, and new display characteristic light is emitted; the projection module transmits the light beam towards the display screen, and the light beam has the discrete characteristic of light energy in the light beam cross section parallel to the display surface, and is received the light beam by the display screen and inherits the discrete characteristic. By applying the technical scheme of the invention, because the grid and the pixel physical structure are removed, the transparency is improved, the manufacturing process of the display screen is simplified, and the adjustment of the large breadth and the size of the display breadth is easier to realize; from the light emitting mechanism and the display principle, the contradiction between the transparency and the imaging brightness in the traditional display equipment is overcome by setting the spectral intensity distribution of the projection excitation source to be more focused on the invisible light region.

Description

Non-grid pixel light-emitting display device and display method thereof

Technical Field

The invention relates to a projection display device, in particular to a display screen which contains luminescent materials and is free of grid pixelation and an emission system which can project discrete characteristic light and enable the screen to inherit the discrete characteristics, and belongs to the field of photoelectric material display.

Background

With the rapid development of multimedia and digital technologies, display products in the market are also increasingly diversified, and the most typical display screen types are CRT, LCD, OLED, opaque projection film and the like. Scanning and light modulation methods include Liquid Crystal Display (LCD), liquid Crystal On Silicon (LCOS), digital Light Processing (DLP), micro-electromechanical systems (MEMS), galvanometers and the like, and light sources are also developed from xenon lamps and Ultra High Performance (UHP) to solid-state light sources such as Light Emitting Diodes (LEDs) and Laser Diodes (LD). With the rise of technologies and applications of laser projection, laser illumination, and the like, illumination and imaging using photo-excited light emission and fluorescent light emitting materials have been widely used.

Conventional LED chips apply a voltage and a current to a semiconductor material to electrically excite the semiconductor material to emit light. The white light LED is further coated on a base material LED light-emitting chip by yellow fluorescent powder, when the base material LED chip generates blue light through electroluminescence, the blue light excites the yellow fluorescent powder, and finally white light is synthesized, wherein the yellow fluorescent powder is a photoluminescence process.

The fluorescent color wheel used in the laser projector is also a photoluminescence principle, and a light source adopts purple or blue laser, so that the laser excites yellow powder or red powder on the fluorescent color wheel, thereby generating white light or red light, and then filtering is carried out through a dichroic mirror in a light path, thereby obtaining green light, red light and the like in a required visible range.

Conventional CRT displays use a phosphor screen and the excitation source is an electron beam. Under the vacuum environment, the fluorescent screen is scanned point by point and line by line through the electron beam, and the electron excites the fluorescent powder to emit light to form image display. The plasma display is also a fluorescent screen, and plasma is used as an excitation source. Due to the constraint of an excitation source, the sizes of the display screens of the two display screens are limited by frames.

In addition, conventional display screens are either opaque or have low transparency. Products with nominal transparent display in the market comprise OLED display, LCD with a liquid crystal backlight pulled open, holographic screen projection display and diffusion film projection display with slightly high light transmittance. The above products either have a grid or are visibly hazy on the screen.

The above-described OLED display and LCD with a backlight pulled apart are screens with grids in which the grid gaps and the wire electrodes are opaque, and the light transmittance of such grid screens is limited. The holographic screen and the diffusion film are screens with microstructures, and image display is performed by utilizing the principle of diffuse reflection and scattering of projection light on the screens. This is a limitation of the display physical principle, and both the transmittance of visible light is high and the visible light is scattered or diffusely reflected to form an image, so that a trade-off between transparency and image brightness is required.

Disclosure of Invention

In view of the above-mentioned shortcomings of the prior art, the present invention aims to provide a non-grid pixel light emitting display device and a display method thereof, so as to satisfy the optimization of both transparency and imaging brightness.

In one aspect of the present invention for achieving the above object, a display device in which non-grid pixels emit light includes: the display screen is made of a fluorescent luminescent material, removes grids and pixelized physical structures, and can perform composite intensity spectrum processing on the projected characteristic light and emit new display characteristic light; and the projection module is used for transmitting the light beam towards the display screen, the light beam has discrete characteristics of light energy in the cross section of the light beam parallel to the display surface, and the light beam is received by the display screen and inherits the discrete characteristics.

In the non-grid pixel light-emitting display device, furthermore, the maximum solid angle of each display characteristic unit on the display screen for receiving the projection characteristic light is 2 pi steradians, and the maximum solid angle for emitting new display characteristic light is 4 pi steradians.

In the non-grid pixel light-emitting display device, the discrete features at any time point or time period are discrete or continuous point-like features, discrete or continuous line segment-like features, grid pixel-like features, or a combination of two or more of them, and each discrete feature has a spectral intensity, a spectral intensity modulation amplitude and a modulation frequency which are controlled independently.

In the non-grid pixel light emitting display device, a wavelength corresponding to a maximum or near maximum of the spectral intensity of the display characteristic light and a wavelength corresponding to a maximum or near maximum of the spectral intensity of the projection characteristic light have a difference of 10nm to 550nm, and a wavelength corresponding to a minimum or near minimum of the spectral intensity of the display characteristic light and a wavelength corresponding to a minimum or near minimum of the spectral intensity of the projection characteristic light have a difference of 10nm to 1000nm.

Another technical solution of the present invention to achieve the above object is a display method of non-grid pixel light emission, comprising the steps of:

transmitting a light beam towards the display screen by a projection module, wherein the light beam is projection characteristic light with discrete characteristics of light energy in a light beam section parallel to the display surface, and the discrete characteristics are modulated by the projection module;

the display screen receives and displays the light beam, and performs composite intensity spectrum processing at least comprising surface reflection, internal reflection, partial transmission, internal scattering, internal absorption excited light and specified spectrum filtering on the projection characteristic light, wherein the internal absorption excited light is that a fluorescent luminescent material in the display screen absorbs partial light energy of the projection characteristic light and excites and radiates new light energy; after the composite intensity spectrum processing, the spectral intensity of the partial inherited projection characteristic light is superposed with the spectral intensity of the filtered and reserved radiation light to form a new display characteristic light and a new spectral intensity distribution structure thereof.

In the non-grid pixel light-emitting display method, the new display characteristic light inherits the spectral intensity distribution structure of the projection characteristic light, and the inherit is in a linear scale, a partially linear scale or a non-linear scale.

In the non-grid pixel light emitting display method, further, along with the modulation of the projection module on the discrete characteristic, the time bandwidth of the display screen responding to the conversion and forming new display characteristic light is 0.2ns-800ms, and the response time curve has a rising edge steepness or a falling edge steepness of 0.1ns-400ms.

In the non-grid pixel light emitting display method, furthermore, the response time of the display screen for forming new display characteristic light is less than or equal to the single frame time of the projection characteristic light.

The above-mentioned display method of non-grid pixel light emission, further, the spectral intensity distribution of the formed new display characteristic light is constituted by superposition, in which the first kind of spectral intensity distribution of the internally absorbed stimulated luminescence light is the basis which must be included therein, and the second kind of spectral intensity distribution of the projected characteristic light transmission portion, the third kind of spectral intensity distribution of the projected characteristic light reflected by the display screen surface, the internally reflected portion, and the fourth kind of spectral intensity distribution of the specified spectral filtering light are partially or entirely superposed on the basis.

In the above non-grid pixel light emitting display method, the spectral intensity distribution of the projection characteristic light is: the spectral intensity value ranges from 0.0001% to 100% of the maximum value, and the corresponding spectral range ranges from deep ultraviolet to near infrared.

The display device and the display method thereof have the prominent substantive characteristics and remarkable progress: due to the fact that the grid and the pixel physical structure are removed, transparency is improved, the manufacturing process of the display screen is simplified, and adjustment of the large-breadth size and the display breadth size is easier to achieve; from the light emitting mechanism and the display principle, the contradiction between the transparency and the imaging brightness in the traditional display equipment is overcome by setting the spectral intensity distribution of the projection excitation source to be more focused on the invisible light region.

Drawings

FIG. 1 is a schematic diagram of a display device of a gridless pixellated light emitting screen of the present invention.

Fig. 2 is a schematic diagram of an implementation of the projection module of the display device of fig. 1 for transferring discrete features and inheriting discrete features on a display screen.

FIG. 3 is a schematic diagram of the display screen performing composite intensity spectrum processing and displaying spectral intensity distribution of characteristic light.

FIG. 4 is a schematic representation of the spectral intensity distribution of a composite intensity spectrum from a display screen with a filtering arrangement.

FIG. 5 is a diagram illustrating the spectral intensity response of the display screen to the projection module.

FIG. 6 is a schematic diagram of the spectral intensity distribution of the response of the display screen to the projection module modulating the projected characteristic light.

Detailed Description

The following detailed description of the embodiments of the present invention is provided in connection with the accompanying drawings for the purpose of understanding and controlling the technical solutions of the present invention, so as to define the protection scope of the present invention more clearly.

It is difficult to make a trade-off between transparency and imaging brightness to overcome the difficulties of conventional displays of various types. The present invention innovatively provides a light emitting display system and method with a screen without grid pixelation.

In order to achieve the purpose, the screen is provided with a grid-free and pixel physical structure, and can carry out composite intensity spectrum processing on specific incident light and emit new display characteristic light. In addition, the projection module is matched with the display screen, the projection module can transmit the discrete characteristics of light energy in the beam section parallel to the display surface to the display screen, and the display screen can generally inherit the discrete characteristics of projection light, so that the new display characteristic light presents a pixilated image.

Among the above-mentioned technical scheme, the display screen can carry out compound intensity spectrum to the module output light that throws and handle including surface reflection, internal reflection, partial transmission, internal scattering, internal absorption excited light, appointed spectrum filtering etc. handle, sends new demonstration characteristic light finally. The light emitted by the light source is excited to absorb light, the energy of projection light transmitted by the emission module can be partially absorbed by the fluorescent luminescent material in the light source, and then the light is excited and radiates new light energy to form spectral energy conversion. The projected light may be partially reflected, internally scattered, transmitted on the surface or inside of the display screen, or filtered by the spectrum filter layer, and finally the spectrum intensity of the undistorted part of the projected light and the spectrum intensity of the radiation light of the display screen which is not filtered are superposed, so as to form the spectrum intensity distribution of the display characteristic light emitted by the display screen. The composite intensity spectrum processing is performed in a conventional environment, including a photoluminescence conversion process, without the need for a vacuum environment such as CRT and plasma display. Therefore, the display screen has no frame constraint, the size of the display screen theoretically has no boundary and infinite extension, and the display screen can be extended by limited seamless splicing in practice. On the other hand, the spectral intensity spectral distribution of the new display characteristic light is also related to the surface treatment and the internal structure of the display screen, the types and the arrangement of luminescent materials, the spectral intensity spectral distribution of the projection module, the design of the filter layer, the manufacturing process of the display screen and the like.

Among the above-mentioned technical scheme, the projection module of cooperation display screen can transmit the discrete characteristic of the interior light energy of beam cross-section that is on a parallel with the display surface to the display screen to inherit the intensity arrangement distribution characteristic structure who throws light by the display screen. Such inheritance may be linearly, partially, or non-linearly scaled. There may be a small amount of difference. Because there are possible diffusion/dispersion/scattering of light emitted by the characteristic units on the display screen, crosstalk between adjacent projection light characteristic units, crosstalk of radiation light between adjacent display characteristic units, crosstalk of transmission of light waveguides adjacent to other display characteristic units, aberration and distortion of the projection module, reflection superposition, transmission superposition and other factors, the projected light discrete characteristics have certain deviation when being transmitted to the display screen, and the deviation is relatively small in influence, so that the display screen can generally inherit the discrete characteristics of the projection light, the new display characteristic light presents a pixilated image, the spectral intensity of the new display characteristic light is in a certain proportional relation with the projected spectral intensity output by the projection module, the response time of the new display characteristic light to the projected output light is short, and the residual glow effect cannot influence frame switching of the display. The spectral intensity of the new display characteristic light, the spectral intensity modulation amplitude and the modulation frequency in a certain period can be respectively and independently adjusted and controlled, the adjustment and control are determined by the adjustment and control of the projection characteristic light, and the spectral intensity modulation amplitude and the modulation frequency in a certain period are basically synchronous.

FIG. 1 is a schematic view of a display device of a gridless pixellated luminescent screen of the present invention. The projection module 101 projects a light beam 102 with specific spectral intensity distribution onto the display screen 104, and at a certain time point in a light beam section 103 parallel to the display screen 104, the light beam section 103 contains characteristic light with specific spectral intensity distribution, the projection module 101 can transmit the characteristics of the light beam section 103 to the display screen 104, and further, the display screen 104 can absorb the energy of the light beam 102 and the characteristic light of the light beam section 103 and emit new display characteristic light. This process is further illustrated in fig. 2.

In the embodiment of fig. 2, the beam cross-section 103 has

characteristic cells

201 and 202 with discrete spectral intensities, wherein the characteristic cell 201 has a boundary 203 within which the spectral intensity level and the switching time of the characteristic cell 201 can be arbitrarily adjusted and controlled. Likewise, the feature cell 202 has a boundary 204 within which the spectral intensity level and the switching time of the feature cell 202 can be arbitrarily adjusted and controlled. At some point in time, feature cell 201 has an intensity spectral distribution shown at 205 and feature cell 202 has an intensity spectral distribution shown at 206. The distribution shape of the characteristic light of the

characteristic cells

201 and 202 may be discrete or continuous dots, discrete or continuous segments, grids of N × M (N and M are greater than 1) pixels of a specific size, or close to the above characteristics, or a combination of the above characteristics. In the present embodiment, the

feature cells

201 and 202 are rectangular cells.

In the embodiment of fig. 2, the display screen 104 absorbs the energy of the light beam 102 and emits new intensity spectrum light through the excitation. The display screen 104 can substantially inherit the intensity spectral distribution characteristics of the beam cross-section 103, e.g., new feature cells 207 on the display screen substantially inherit the discrete characteristics of the feature cells 201 and also have a shape similar to the feature cells 201, the new feature cells having boundaries 209 that are not sharp but substantially similar in shape to the boundaries 209 due to possible diffusion/dispersion/scattering of light emitted by the feature cells on the display screen, cross-talk of radiation waveguides between adjacent display feature cells, etc. Similarly, a new feature cell 208 displayed on the display screen, which substantially inherits the discrete features of the feature cell 202, also has a boundary 210 with a shape similar to the feature cell 202 and a shape similar to the boundary 204. The relative positions of

feature cells

201 and 202 within the beam cross-section 103 are similar to the relative positions of

feature cells

207 and 208 within the display area of the display screen.

The solid angle of light cone of projection

light feature cells

201 and 202 may be different for each absorption distribution location, with the maximum solid angle of 2 π steradians for each display feature cell receiving the projection feature light and the maximum solid angle of 4 π steradians for each display feature cell emitting new display feature light on the display screen, independent of

feature cell

207 and 208.

In the embodiment of fig. 2, at a certain time point, the on-screen feature cell 207 has a final intensity spectrum distribution 211, and the intensity spectrum distribution 211 is completely different from the intensity spectrum distribution 205 of the corresponding projection feature cell 201, including both the new intensity spectrum radiated after the feature cell 201 is partially absorbed by the screen and the intensity spectrum of the feature cell 201 that is not absorbed by other portions. Similarly, the feature cells 208 have a final intensity spectrum distribution 212, and the intensity spectrum distribution 212 is completely different from the intensity spectrum distribution 206 of the corresponding projected feature cells 202, including both the new intensity spectrum radiated after the display screen partially absorbs the feature cells 202 and the intensity spectrum of the feature cells 202 that are not absorbed by other portions.

Fig. 3 is a schematic diagram showing the display screen performing the composite intensity spectrum processing and displaying the spectral intensity distribution of the characteristic light. It can be seen that, in (a), after the projected characteristic light 301 is incident on the display screen 104, the display screen is excited to generate the luminescence 302 due to partial absorption of the energy of the projected characteristic light, and the maximum solid angle of the luminescence is 4 pi steradians, where the light energy conversion efficiency can be from 5% to 95%. Meanwhile, part of the projected characteristic light is partially or repeatedly reflected on the outer surface or some inner surface of the display screen, and the last part of the residual reflected light 303 exits from the front surface of the display screen, and if the viewer looks at the screen from the projection direction, i.e. in a forward projection mode, the residual reflected light will become a part of the display characteristic spectral intensity spectrum of the display screen 104. Further, a portion of the projected characteristic light is transmitted inside the display screen due to incomplete absorption by the display screen, or is transmitted after multiple internal reflections, and a final portion of the residual transmitted light 304 exits from the rear surface of the display screen, and if the viewer looks at the screen from the back projection direction, i.e. in the rear projection mode, the residual transmitted light 304 becomes a part of the display characteristic spectral intensity spectrum of the display screen 104.

Where (b) is an embodiment of the intensity spectrum 305 of the projected characteristic light 301, where point P0 corresponds to an intensity maximum, the corresponding wavelength corresponds to λ a0, the ordinate normalized intensity of points P1 and P2 corresponds to t, the t value can be any value between 0.0001% and 100%, the corresponding abscissa wavelength corresponds to λ a1 and λ a2, respectively, and λ a1 can range from a minimum to a deep ultraviolet, e.g., 100nm, and λ a2 can range from a maximum to a mid-to-far infrared region, e.g., 2500nm.

Where in (c) the intensity spectrum curve 307 corresponds to an example of the intensity spectrum of the stimulated light 302 and the intensity spectrum curve 306 is an example of the residual transmitted light 304, the resulting display characteristic spectral intensity spectrum 308 of the display screen 104 is a composite superposition of the intensity spectrum curves 306 and 307 if the viewer is looking toward the screen from the back projection direction, i.e., rear projection mode. The intensity maximum value of the spectrum intensity spectrum 308 obtained by superposition corresponds to the light wavelength of lambda b0, the sizes of lambda b0 and lambda a0 are obviously different, and the difference between the two can be 10nm to 600nm. Similar to the t value setting in fig. 3 (b), the spectral intensity spectrum 308 corresponds to a spectral range from λ b1 to λ b2, which may range from ultraviolet to infrared. The difference between λ b1 and λ a1 may be 10nm to 1000nm.

Further, in the embodiment of fig. 3, fig. 4 is an embodiment of composite intensity spectrum processing of a display screen with self-filtering. The display screen 104 may be a single layer structure or a combination of multiple layers including surfaces or structures that selectively absorb, reflect, or filter. Through specific filtering, the display color gamut is increased, the display contrast is improved, the brightness is improved, and the like. In fig. 4 (a), assuming that the rear surface of the display screen 104 contains a filter layer with a transmission curve 401, if the viewer is looking into the screen from the back projection direction, i.e. in rear projection mode, the spectral intensity spectrum 308 in fig. 3 (c) will again be composited with the filter curve 401, resulting in a new display characteristic spectral intensity spectrum 402 in fig. 4 (b). In addition to the above embodiments, in other embodiments, the display screen can perform composite intensity spectrum processing on the output light of the projection module, including surface reflection, internal reflection, transmission, scattering, stimulated absorption luminescence, specified spectrum filtering, and the like, and finally emit new display characteristic light.

As shown in fig. 5 and 6, the spectral intensity response and spectral intensity modulation response of the display screen to the projection module are further illustrated.

In the embodiment of fig. 2, the

feature cells

207 and 208 generally inherit the discrete features of the

feature cells

201 and 202, both in terms of intensity magnitude and intensity modulation. The spectral intensity levels and the on-off times of the

feature cells

201 and 202 can be arbitrarily adjusted and controlled, and the adjustment control of the corresponding new

display feature cells

207 and 208 is determined by the adjustment control of the

projection feature cells

201 and 202, which are substantially synchronized.

The new display characteristic light substantially inherits the spectral intensity distribution characteristic structure of the projection light, and the spectral intensity of the display characteristic light is proportional to the projection spectral intensity output by the projection module, and the relationship can be linear, piecewise linear, approximately linear, piecewise approximately linear, nonlinear, piecewise nonlinear, or a combination thereof. In the example of FIG. 5, the spectral intensity of the projected light is increased and the displayed spectral intensity on the display screen is increased, as shown by the relationship where a spectral intensity curve 501 is displayed that is not exactly linear as the transmitted light spectral intensity curve 502, but rather piecewise close or similar. At any point in time, the display characteristic light spectral intensity of the display screen can be adjusted by the projected light output spectral intensity. Furthermore, in a certain period of time, the on/off frequency or the modulation frequency of the projection light output by the projection module can be adjusted to form the superposition effect of the intensity change of the projection spectrum in the period of time, so that the intensity change of the projection spectrum is transmitted to the display screen to form the temporary superposition of the intensity change of the display characteristic spectrum.

As shown in fig. 6, the projected characteristic light has a spectral intensity curve 601 shown in (a), and the corresponding display characteristic light has a spectral intensity curve 603 shown in (b). If the spectral intensity curve 601 is modulated with a square wave 602 as in (c), a modulation response is obtained that shows the spectral intensity curve 604 in the characteristic light as in (d). Where spectral intensity curve 604 has a time response with a rising edge width 605 and a falling edge width 606 that are very closely spaced, which may be 0.1 ns-400 ms. Whether square wave modulation or other modulation is carried out, when intensity modulation is carried out on the projected characteristic light, the process time of response conversion of the display screen and formation of new display characteristic light is short, and the time bandwidth of a time response curve can be 0.2 nanosecond-800 milliseconds.

Furthermore, when the projected characteristic light changes according to a certain frame frequency, the response time of the display screen for forming the single-frame characteristic light is not longer than the single-frame time of the projected characteristic light, so that the influence of the residual glow effect on the displayed characteristic light is avoided. The position and angle at which the display screen receives the projected characteristic light has no or little effect on the response time of the new display characteristic light forming the display screen.

In summary, the scheme introduction and the embodiment detailed description of the display device and the display method of the invention can be seen, and the scheme has prominent substantive features and remarkable progressiveness: because the self grid removing and pixel physical structure is not provided with an array opaque grid electrode wire like an LCD or an OLED, the transparency is improved, the manufacturing process of the display screen is simplified, and the adjustment of a large breadth and the size of a display breadth is easier to realize; and the light energy discrete characteristics are transmitted to the light-emitting screen through the projection module, and the pixelation of the finally presented light-emitting display image is introduced through external exciting light. In order to ensure that the light transmittance of the screen to the visible light range is high, the intensity spectrum distribution of the projection excitation source is arranged to be more important in the non-visible light range, and the contradiction between the transparency and the imaging brightness in the traditional display equipment is overcome by arranging the intensity spectrum distribution of the projection excitation source to be more important in the non-visible light range from the aspects of a light emitting mechanism and a display principle.

The above description is only a part of the preferred embodiments of the present invention, and not intended to limit the scope of the present invention, and all technical solutions formed by equivalent substitutions or equivalent transformations fall within the scope of the present invention.

Claims

1. A non-grid pixel emissive display device, comprising:

the display screen is made of a fluorescent luminescent material, removes grids and pixelized physical structures, can perform composite intensity spectrum processing on the projected characteristic light and emits new displayed characteristic light, wherein the composite intensity spectrum processing at least comprises surface reflection, internal reflection, partial transmission, internal scattering, internal absorption stimulated luminescence and specified spectrum filtering, and the spectral intensity of the unrepaired part of projected light and the spectral intensity of the unfiltered display screen radiation light are superposed to form the spectral intensity distribution of the displayed characteristic light emitted by the display screen; and the projection module transmits the light beam towards the display screen, the light beam has discrete characteristics of light energy in a light beam section parallel to the display surface, and the light beam is received by the display screen and inherits the discrete characteristics.

2. A non-grid pixel emissive display device according to claim 1, wherein: the maximum solid angle of each display characteristic unit on the display screen for receiving the projection characteristic light is 2 pi steradians, and the maximum solid angle for emitting new display characteristic light is 4 pi steradians.

3. A non-grid pixel emissive display device according to claim 1, wherein: the discrete features are discrete or continuous point-like, discrete or continuous line segment-like, grid pixel-like and the combination of more than two, and the new display feature light has correspondingly and independently controlled spectral intensity, spectral intensity modulation amplitude and modulation frequency.

4. A non-grid pixel emissive display device according to claim 1, wherein: the wavelength corresponding to the maximum or near maximum of the spectral intensity of the display characteristic light and the wavelength corresponding to the maximum or near maximum of the spectral intensity of the projection characteristic light have a difference of 10nm to 600nm, and the wavelength corresponding to the minimum or near minimum of the spectral intensity of the display characteristic light and the wavelength corresponding to the minimum or near minimum of the spectral intensity of the projection characteristic light have a difference of 10nm to 1000nm.

5. A method of displaying non-grid pixel luminescence, comprising the steps of:

the display screen receives and displays the light beam, and performs composite intensity spectrum processing at least comprising surface reflection, internal reflection, partial transmission, internal scattering, internal absorption of stimulated luminescence and designated spectral filtering on the projection characteristic light, wherein the internal absorption of stimulated luminescence is that a fluorescent luminescent material in the display screen absorbs partial light energy of the projection characteristic light and excites and radiates new light energy; after the composite intensity spectrum processing, the spectral intensity of the partial inherited projection characteristic light is superposed with the spectral intensity of the filtered and reserved radiation light to form a new display characteristic light and a new spectral intensity distribution structure thereof.

6. The method of claim 5 wherein the non-grid pixels are illuminated by: the new display characteristic light inherits the spectral intensity distribution structure of the projection characteristic light, and the inheriting type is linear scale, partial linear scale or non-linear scale.

7. The method of claim 5 wherein the non-grid pixels emit light according to the method of claim: and the display screen responds and converts to form a new time bandwidth for displaying the characteristic light with 0.2ns-800ms along with the square wave modulation of the discrete characteristic by the projection module, and the response time curve has rising edge steepness or falling edge steepness of 0.1ns-400ms.

8. A method of displaying light emitted from a non-grid pixel according to claim 7, wherein: the response time of the display screen for forming the new display characteristic light is less than or equal to the single frame time of the projection characteristic light.

9. The method of claim 5 wherein the non-grid pixels emit light according to the method of claim: the spectral intensity distribution of the projection characteristic light is as follows: the spectral intensity values range from 0.0001% to 100% of the maximum, the corresponding spectral range from deep ultraviolet to near infrared.