Projection display device and display equipment

Abstract

The present invention relates to the field of display technology, and discloses a projection display device and a display equipment, wherein the projection display device comprises: a light emitting component, the light emitting component comprises a plurality of light emitting elements arranged in an array; a light adjusting component, the light adjusting component is used to adjust the light emitted by the light emitting element; a color conversion component, the color conversion component is used to convert the color of the light emitted by the light emitting element; and a projection component, the projection component is used to amplify and project the light after the color is converted by the color conversion component. The present invention is conducive to increasing the service life and improving the display effect.

Description

Technical Field

[0001] The present invention relates to the field of display technology, and more specifically, to a projection display device and a display equipment. Background Art

[0002] Micro LED-based projection display devices have the advantages of small size and low power consumption compared to DLP (Digital Light Processor) and LCOS (Liquid Crystal on Silicon). Replacing LCD TVs with Micro LED projection displays will help promote future ecological and environmental benefits.

[0003] However, existing Micro LED-based projection display devices have problems of short service life and poor display effect. Summary of the invention

[0004] In view of this, the present invention provides a projection display device and a display equipment, which are beneficial to increase the service life and improve the display effect.

[0005] The present invention provides a projection display device, comprising: a light emitting component, the light emitting component comprising a plurality of light emitting elements arranged in an array; a light adjusting component, the light adjusting component being used to adjust the light emitted by the light emitting element; a color conversion component, the color conversion component being used to convert the color of the light emitted by the light emitting element; and a projection component, the projection component being used to amplify and project the light after the color is converted by the color conversion component.

[0006] Based on the same idea, the present invention also provides a display device, including the projection display apparatus provided by the present invention.

[0007] Compared with the prior art, the projection display device and display equipment provided by the present invention achieve at least the following beneficial effects:

[0008] In the projection display device provided by the present invention, the light emitted by the light-emitting element can be adjusted by the light adjustment component to improve the light emitting effect of the projection display device. The light emitted by the light-emitting element can be converted in color by the color conversion component, so that the light-emitting element in the light-emitting component can adopt a monochromatic light-emitting element with low heat dissipation and long service life, which is beneficial to improve the service life of the projection display device. Exemplarily, a blue light micro LED can be selected as a light-emitting element in the light-emitting component. The blue light micro LED has low heat dissipation and long service life. The color of the light of part of the blue light micro LED can be converted into red light by the color conversion component, so that there is no need to set a red light microLED with high heat dissipation and low service life as a light-emitting element in the light-emitting component to provide red light. At the same time, since the light-emitting component is a monolithic structure with a plurality of light-emitting elements arranged in an array, the alignment accuracy requirements of the light-emitting component and other structures are effectively reduced, which is beneficial to improving the alignment accuracy of the light-emitting component and other structures, and effectively alleviates the situation where the alignment deviation of the light-emitting component and other structures affects the display effect, which is beneficial to improving the display effect.

[0009] Of course, any product implementing the present invention does not necessarily need to achieve all of the above-mentioned technical effects at the same time.

[0010] Further features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.

[0012] Figure 1 It is a structural schematic diagram of a projection display device in the prior art;

[0013] Figure 2 It is a structural schematic diagram of a projection display device provided by the present invention;

[0014] Figure 3 It is a plan view schematic diagram of a light-emitting component provided by the present invention;

[0015] Figure 4 It is a partial structural schematic diagram of another projection display device provided by the present invention;

[0016] Figure 5 It is a partial structural schematic diagram of another projection display device provided by the present invention;

[0017] Figure 6 It is a partial structural schematic diagram of another projection display device provided by the present invention;

[0018] Figure 7 It is a structural schematic diagram of another projection display device provided by the present invention;

[0019] Figure 8 It is a partial structural schematic diagram of another projection display device provided by the present invention;

[0020] Fig. 9 It is a planar schematic diagram of a color wheel provided by the present invention;

[0021] Fig.10 It is a structural schematic diagram of another projection display device provided by the present invention;

[0022] Fig.11 It is a plan schematic diagram of a display device provided by the present invention. DETAILED DESCRIPTION

[0023] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangement of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention unless otherwise specifically stated.

[0024] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

[0025] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered as part of the specification.

[0026] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0027] It should be noted that like reference numerals and letters refer to similar items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0028] In order to improve the problems of low service life and poor display effect of existing Micro LED-based projection display devices, the inventors conducted the following research: Figure 1 is a schematic diagram of a projection display device in the prior art, referring to Figure 1The projection display device includes red Micro LED1, green Micro LED2 and blue Micro LED3. The light emitted by red Micro LED1, green Micro LED2 and blue Micro LED3 is mixed by a dichroic prism 4, and then magnified and displayed by a projection lens. Since the EQE (External Quantum Efficiency) of the red Micro LED1 is low, the heat dissipation is high and the service life is low, the service life of the projection display device is low. At the same time, the red Micro LED1, green Micro LED2 and blue Micro LED3 all need to be aligned with the dichroic prism 4, and the alignment accuracy requirements are high. The red Micro LED1, green Micro LED2 and blue Micro LED3 are prone to misalignment with the dichroic prism 4, which affects the display effect of the projection display device.

[0029] Based on the above research, the present application provides a projection display device and a display device, which are conducive to increasing the service life and improving the display effect. The projection display device with the above technical effects provided by the present application is described in detail as follows:

[0030] Figure 2 is a structural schematic diagram of a projection display device provided by the present invention, Figure 3 is a schematic plan view of a light emitting component provided by the present invention, with reference to Figure 2 and Figure 3 This embodiment provides a projection display device, which includes a light-emitting component 10. The light-emitting component 10 includes a plurality of light-emitting elements 11 arranged in an array.

[0031] The projection display device further includes a light adjustment component 20, a color conversion component 30 and a projection component 40. The light adjustment component 20 is used to adjust the light emitted by the light emitting element 11. The color conversion component 30 is used to perform color conversion on the light emitted by the light emitting element 11. The projection component 40 is used to amplify and project the light after the color conversion component 30 has converted the color.

[0032] Specifically, in the projection display device provided in the present embodiment, the light emitted by the light emitting element 11 can be adjusted by the light adjustment component 20 to improve the light emitting effect of the projection display device. The light emitted by the light emitting element 11 can be converted in color by the color conversion component 30, so that the light emitting element 11 in the light emitting component 10 can adopt a monochromatic light emitting element with low heat dissipation and long service life, which is conducive to improving the service life of the projection display device. Exemplarily, a blue light micro LED can be selected as the light emitting element 11 in the light emitting component 10. The blue light micro LED has low heat dissipation and long service life. The color of the light of part of the blue light micro LED can be converted into red light by the color conversion component 30, so that there is no need to set a red light micro LED with high heat dissipation and low service life as the light emitting element 11 in the light emitting component 10 to provide red light. At the same time, since the light emitting component 10 is a monolithic structure with a plurality of light emitting elements 11 arranged in an array, the alignment accuracy requirements of the light emitting component 10 and other structures are effectively reduced, which is conducive to improving the alignment accuracy of the light emitting component 10 and other structures, and effectively alleviates the situation where the alignment deviation of the light emitting component 10 and other structures affects the display effect, which is conducive to improving the display effect.

[0033] Continue to refer Figure 2 and Figure 3 In some optional embodiments, the light-emitting element 11 is a monochrome Micro LED. Optionally, the light-emitting element 11 may be a blue micro LED, a purple micro LED, or an infrared micro LED, which has low heat dissipation and long service life. Of course, the light-emitting element 11 may also be a micro LED of other colors. In other embodiments of the present invention, the light-emitting element 11 may also be other types of light-emitting elements, which will not be described in detail in the present invention.

[0034] It should be noted that Figure 2 The light emitting component 10 is exemplarily shown to include a 5×6 array of light emitting elements 11, but the present invention is not limited thereto. In other embodiments of the present invention, the light emitting component 10 may also include other numbers of light emitting elements 11 arranged in arrays, which will not be described in detail herein.

[0035] Continue to refer Figure 2 and Figure 3In some optional embodiments, the plane where the light emitting component 10 is located is parallel to the plane where the light adjusting component 20 is located, that is, the light emitting component 10 and the light adjusting component 20 are arranged in parallel, which is conducive to improving the alignment accuracy of the light emitting component 10 and the light adjusting component 20, and at the same time, it is conducive to the light adjusting component 20 to adjust the light emitted by the light emitting element 11. The plane where the light emitting component 10 is located is parallel to the plane where the color conversion component 30 is located, that is, the light emitting component 10 and the color conversion component 30 are arranged in parallel, which is conducive to improving the alignment accuracy of the light emitting component 10 and the color conversion component 30, and at the same time, it is conducive to the color conversion component 30 to convert the light emitted by the light emitting element 11.

[0036] Figure 4 is a partial structural diagram of another projection display device provided by the present invention, referring to Figure 4 In some optional embodiments, the light adjustment component 20 includes a first lens 21 , and the first lens 21 is located between the light emitting component 10 and the color conversion component 30 .

[0037] The first lens 21 includes a plurality of first protrusions 211 . The first protrusions 211 are located on a side of the first lens 21 facing the light emitting assembly 10 , and the first protrusions 211 correspond to the light emitting elements 11 one by one.

[0038] Specifically, a plurality of first protrusions 211 are provided on the side of the first lens 21 facing the light-emitting component 10, and the first protrusions 211 correspond to the light-emitting elements 11 one by one, and the first protrusions 211 protrude in the direction close to the corresponding light-emitting element 11, so that when the light emitted by the light-emitting element 11 is irradiated onto the corresponding first protrusion 211, the first protrusion 211 will focus the light irradiated onto its surface, and the focused light is directed onto the color conversion component 30. Focusing the light-emitting element 11 and then directing it onto the color conversion component 30 is beneficial to improving the color conversion effect of the light.

[0039] Figure 5 is a partial structural diagram of another projection display device provided by the present invention, referring to Figure 5 In some optional embodiments, the color conversion component 30 includes a plurality of color conversion modules 31 , and the color conversion modules 31 correspond to the light emitting elements 11 one by one.

[0040] Specifically, by providing a color conversion module 31 corresponding to the light emitting element 11 in the color conversion component 30, after the light emitted by the light emitting element 11 is incident on the color conversion module 31 corresponding thereto, the color conversion module 31 can convert the light emitted by the light emitting element 11. The color conversion module 31 can be provided on the color conversion component 30 to achieve color conversion of the light emitted by the light emitting element 11. At the same time, the color conversion component 30 has a simple structure, which is conducive to integrating the color conversion component 30 into the projection display device, thereby simplifying the structure of the projection display device, so that the projection display device can adapt to more usage scenarios.

[0041] Optionally, the color conversion module 31 may include at least three color conversion modules. Exemplarily, the three color conversion modules may be a red color conversion module, a green color conversion module, and a blue color conversion module, respectively. Accordingly, the light emitted by the corresponding light-emitting element 11 may be converted into red, green, and blue, respectively. Of course, in other embodiments of the present invention, the color conversion module 31 may also include other numbers of different color conversion modules, and the color conversion module 31 may also include other color conversion modules, which will not be described in detail in the present invention.

[0042] Continue to refer Figure 5 In some optional embodiments, a color conversion material is provided in the color conversion module 31 , so that the color of the light emitted by the light emitting element 11 can be converted by the color conversion module 31 .

[0043] Optionally, the color conversion material may be quantum dots or fluorescent powder. Of course, in other embodiments of the present invention, the color conversion material may also be other color conversion materials, which will not be described in detail herein.

[0044] Figure 6 is a partial structural diagram of another projection display device provided by the present invention, referring to Figure 6 In some optional embodiments, the color conversion module 31 is a protruding structure, the color conversion module 31 is located on a side of the color conversion component 30 away from the light-emitting component 10 , and the color conversion module 31 protrudes in a direction away from the light-emitting component 10 .

[0045] Specifically, the reusable color conversion module 31 is a raised structure. While the color conversion module 31 converts the color of the light emitted by the light-emitting element 11, the focused light formed after passing through the first raised portion 211 can be diffused by the raised structure in the color conversion module 31, thereby helping to improve the display effect of the projection display device.

[0046] Figure 7 is a schematic diagram of the structure of another projection display device provided by the present invention, referring to Figure 7In some optional embodiments, the light emitting assembly 10 includes a plurality of light emitting units 111, and the light emitting unit 111 includes at least two light emitting elements 11. In the same light emitting unit 111, the light emitted by each light emitting element 11 has different colors after being converted by the color conversion module 31 corresponding thereto. Exemplarily, the light emitting unit 111 includes three light emitting elements 11. In the same light emitting unit 111, the color conversion modules 31 corresponding to the three light emitting elements 11 may be a red color conversion module, a green color conversion module, and a blue color conversion module, respectively, so that in the same light emitting unit 111, the light emitted by the three light emitting elements 11 are converted into red, green, and blue, respectively. Of course, in other embodiments of the present invention, the light emitting unit 111 may also include other numbers of light emitting elements 11, and the color conversion modules 31 corresponding to the light emitting elements 11 may also be color conversion modules of other colors, which will not be described in detail in the present invention.

[0047] The light adjustment component 20 includes a second lens 22, which is located between the color conversion component 30 and the projection lens 40. The second lens 22 includes a plurality of second protrusions 221, which are located on a side of the second lens 22 away from the light emitting component 10, and the second protrusions 221 correspond to the light emitting units 111 one by one. The second protrusions 221 can mix the light emitted by the light emitting elements 11 in the light emitting units 111 corresponding thereto, and at the same time, the second protrusions 221 can diffuse the light emitted by the light emitting elements 11 in the light emitting units 111 corresponding thereto. The light mixed and diffused by the second protrusions 221 is then magnified and projected by the projection component 40, which is beneficial to improving the display effect of the projection display device.

[0048] Figure 8 is a partial structural schematic diagram of another projection display device provided by the present invention, Fig. 9 is a plan view of a color wheel provided by the present invention, with reference to Figure 8 and Fig. 9 In some optional embodiments, the color conversion component 30 includes a color wheel 32, and the color wheel 32 includes at least two filter parts 321, and there are at least two filter parts 321 with different colors.

[0049] Specifically, the color wheel 32 in the color conversion component 30 includes at least two filter sections 321, and there are at least two filter sections 321 with different colors. The color of the light emitted by the light emitting element 11 is determined by the time the color wheel 32 rotates and the intensity of the light emitted by the light emitting element 11 when passing through the filter sections 321 of different colors. Since the rotation speed of the color wheel 32 is fixed, the color of the light emitting element 11 after conversion by the color wheel 32 can be controlled by controlling the intensity of the light emitted by the light emitting element 11 when passing through the filter sections 321 of different colors, thereby realizing the conversion of the color of the light emitted by each light emitting element 11 through the color wheel 32.

[0050] It should be noted that Fig. 9 It is exemplarily shown that the color wheel 32 includes three filter sections 321, and the three filter sections 321 are respectively a red filter section 321a, a green filter section 321b and a blue filter section 321c. In other embodiments of the present invention, the red filter section 321a, the green filter section 321b and the blue filter section 321c in the color wheel 32 can also be arranged in other proportions, the color wheel 32 can also include other numbers of filter sections 321, and the filter sections 321 in the color wheel 32 can also be filter sections of other colors, which will not be described one by one in the present invention.

[0051] Continue to refer Figure 8 and Fig. 9 In some optional embodiments, the color wheel 32 is circular, and the vertical projection of the light-emitting component 10 on the plane where the color wheel 32 is located is located inside the color wheel 32, and the vertical projection of the light-emitting component 10 on the plane where the color wheel 32 is located does not overlap with the center of the color wheel 32, so that the light emitted by each light-emitting element 11 in the light-emitting component 10 can be directed to the color wheel 32, and when the color wheel 32 rotates, the light emitted by each light-emitting element 11 in the light-emitting component 10 can pass through the same proportion of each filter part 321, so that the light emitted by each light-emitting element 11 in the light-emitting component 10 can be converted by the color wheel 32.

[0052] Fig.10 is a schematic diagram of the structure of another projection display device provided by the present invention, referring to Fig.10 In some optional embodiments, the light adjustment component 20 includes a second lens 23 , and the second lens 23 is located between the color conversion component 30 and the projection lens 40 .

[0053] The second lens 23 includes a plurality of first recessed portions 231 . The first recessed portions 231 are located on a side of the second lens 23 close to the light emitting assembly 10 , and the first recessed portions 231 correspond to the light emitting elements 11 one by one.

[0054] Specifically, when the light emitted by the light-emitting element 11 is irradiated onto the first protrusion 211 corresponding thereto, the first protrusion 211 will have a focusing effect on the light irradiated onto its surface, and the focused light is directed onto the color conversion component 30. After the focused light is converted in color by the color conversion component 30, it is directed toward the first recessed portion 231 corresponding thereto. The first recessed portion 231 is located on the side of the second lens 23 close to the light-emitting component 10, and the first recessed portion 231 corresponds one-to-one to the light-emitting element 11. The first recessed portion 231 can adjust the focused light into a parallel light beam, which is finally enlarged and projected by the projection component 40, which is beneficial to improving the display effect of the projection display device.

[0055] In some alternative embodiments, please refer to Fig.11 , Fig.11 1 is a schematic plan view of a display device provided by the present invention. The display device 1000 provided in this embodiment includes the projection display apparatus 100 provided in the above embodiment of the present invention. Fig.11 The embodiment only takes a television as an example to illustrate the display device 1000. It can be understood that the display device 1000 provided in the embodiment of the present invention can also be a computer, a car display device or other display device 1000 with a display function, and the present invention does not specifically limit this. The display device 1000 provided in the embodiment of the present invention has the beneficial effects of the projection display device 100 provided in the embodiment of the present invention. For details, please refer to the specific description of the projection display device 100 in the above embodiments, and this embodiment will not be repeated here.

[0056] It can be seen from the above embodiments that the projection display device and display equipment provided by the present invention achieve at least the following beneficial effects:

[0057] In the projection display device provided by the present invention, the light emitted by the light-emitting element can be adjusted by the light adjustment component to improve the light emitting effect of the projection display device. The light emitted by the light-emitting element can be converted in color by the color conversion component, so that the light-emitting element in the light-emitting component can adopt a monochromatic light-emitting element with low heat dissipation and long service life, which is beneficial to improve the service life of the projection display device. Exemplarily, a blue light micro LED can be selected as a light-emitting element in the light-emitting component. The blue light micro LED has low heat dissipation and long service life. The color of the light of part of the blue light micro LED can be converted into red light by the color conversion component, so that there is no need to set a red light microLED with high heat dissipation and low service life as a light-emitting element in the light-emitting component to provide red light. At the same time, since the light-emitting component is a monolithic structure with a plurality of light-emitting elements arranged in an array, the alignment accuracy requirements of the light-emitting component and other structures are effectively reduced, which is beneficial to improving the alignment accuracy of the light-emitting component and other structures, and effectively alleviates the situation where the alignment deviation of the light-emitting component and other structures affects the display effect, which is beneficial to improving the display effect.

[0058] Although some specific embodiments of the present invention have been described in detail by way of example, it will be appreciated by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present invention. It will be appreciated by those skilled in the art that the above embodiments may be modified without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A projection display device, characterized in that: include: A light-emitting component, the light-emitting component comprising a plurality of light-emitting elements arranged in an array; A light adjustment component, the light adjustment component is used to adjust the light emitted by the light emitting element; A color conversion component, the color conversion component is used to convert the color of the light emitted by the light emitting element; A projection component, the projection component is used to amplify and project the light after the color is converted by the color conversion component; The light adjustment component includes a first lens, and the first lens is located between the light emitting component and the color conversion component; The first lens includes a plurality of first protrusions, the first protrusions are located on a side of the first lens facing the light emitting component, and the first protrusions correspond to the light emitting elements one by one.

2. The projection display device according to claim 1, characterized in that: The color conversion component includes a plurality of color conversion modules, and the color conversion modules correspond to the light emitting elements one by one.

3. The projection display device according to claim 2, characterized in that: The color conversion module is provided with color conversion material.

4. The projection display device according to claim 2, characterized in that: The color conversion module is a protruding structure, and is located on a side of the color conversion component away from the light emitting component, and the color conversion module protrudes in a direction away from the light emitting component.

5. The projection display device according to claim 2, characterized in that: The light adjustment assembly includes a second lens, and the second lens is located between the color conversion assembly and the projection lens; The light-emitting assembly includes a plurality of light-emitting units, each of which includes at least two light-emitting elements. In the same light-emitting unit, the light emitted by each light-emitting element has a different color after being converted by the corresponding color conversion module. The second lens includes a plurality of second protrusions, the second protrusions are located on a side of the second lens away from the light emitting component, and the second protrusions correspond to the light emitting units one by one.

6. The projection display device according to claim 1, characterized in that: The color conversion component includes a color wheel, the color wheel includes at least two filter parts, and at least two of the filter parts have different colors.

7. The projection display device according to claim 6, characterized in that: The color wheel is circular, and the vertical projection of the light-emitting component on the plane where the color wheel is located is located inside the color wheel, and the vertical projection of the light-emitting component on the plane where the color wheel is located does not overlap with the center of the color wheel.

8. The projection display device according to claim 6, characterized in that: The light adjustment assembly includes a second lens, and the second lens is located between the color conversion assembly and the projection lens; The second lens includes a plurality of first recessed portions, wherein the first recessed portions are located on a side of the second lens close to the light emitting component, and the first recessed portions correspond to the light emitting elements one by one.

9. The projection display device according to claim 1, characterized in that: The plane where the light emitting component is located, the plane where the light adjusting component is located and the plane where the color conversion component is located are parallel.

10. The projection display device according to claim 1, characterized in that: The light-emitting element is a monochrome Micro LED.

11. A display device, characterized in that: The display device comprises the projection display device according to any one of claims 1-10.

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