CN115343884A

CN115343884A - Virtual display equipment

Info

Publication number: CN115343884A
Application number: CN202210972861.0A
Authority: CN
Inventors: 陈俐闯; 梁邦兵
Original assignee: Shenzhen Konka Electronic Technology Co Ltd
Current assignee: Shenzhen Konka Electronic Technology Co Ltd
Priority date: 2022-08-15
Filing date: 2022-08-15
Publication date: 2022-11-15

Abstract

The invention discloses virtual display equipment which comprises a display module, wherein the display module comprises a liquid crystal panel, a plurality of Mini Led are distributed on the lower layer of the liquid crystal panel, the Mini Led are arranged in a subarea mode, and the Mini Led can be independently controlled in a subarea mode. The invention ensures that the image quality of the contrast ratio, the peak value brightness and the color rendition degree of the whole picture are multiplied by fine light control of the Mini Led light source. And because of the fine light control function, the original LED which does not need to be started does not emit light according to the requirements of picture signals, thereby playing the roles of saving energy and electricity.

Description

Virtual display equipment

Technical Field

The present invention relates to the field of display device technologies, and in particular, to a virtual display device.

Background

The backlight system of the traditional virtual display equipment such as AR/VR glasses is of a side-emitting type, when a signal is sent to the display module, an OPEN CELL liquid crystal screen of the display module carries out image processing to generate a picture, and then the backlight system provides a light source for illumination and imaging.

The light source of the backlight system mostly adopts a normally-on type, so that useless stray light still exists after passing through the LCD, the contrast cannot be increased, the brightness is insufficient, the display effect is poor, and the overall watching effect is reduced.

Disclosure of Invention

Aiming at the defects of the prior art, the invention innovatively provides the virtual display equipment which can improve the display effect of the display equipment.

In order to achieve the technical purpose, the invention discloses virtual display equipment which comprises a display module, wherein the display module comprises a liquid crystal panel, a plurality of Mini leads are distributed on the lower layer of the liquid crystal panel, the Mini leads are arranged in a partition mode, and the Mini leads can be independently controlled in the partition mode.

Furthermore, each Mini Led is connected with a switch, and the on-off of the Mini Led is controlled through the switch, so that each Mini Led can independently perform on-off control.

Further, the display module comprises a plurality of subarea control loops, and each subarea control loop controls the opening and closing of the Mini Led in one subarea.

Further, the display module further includes:

the Mini Led is distributed on the substrate;

a diffusion plate disposed on the substrate;

a fluorescent film disposed on the diffusion plate;

the liquid crystal panel is arranged on the fluorescent film.

Further, the Mini leds with the same color light in the Mini leds are connected in series, and the Mini leds with multiple color lights after series connection are connected in parallel.

Further, a plurality of Mini Led connection line forms adopt an AM driving form or a PM driving form.

Further, the substrate is a thin substrate.

Further, the thin substrate includes: aluminum substrate, FR4 glass fiber board, glass substrate, CM3 substrate, ceramic substrate or flexible FPC.

Further, the surface of the Mini Led is encapsulated with a QD film or fluorescent powder through a film pressing process.

Further, the virtual display device is an AR display device or a VR display device.

The beneficial effects of the invention are as follows:

the invention ensures that the image quality of the contrast, the peak brightness and the color rendition of the whole picture is multiplied by the fine light control of the Mini Led light source. And because of the fine light control function, the original LED which does not need to be started does not emit light according to the requirements of picture signals, thereby playing the roles of saving energy and electricity.

Drawings

FIG. 1 is a schematic diagram of a backlight module according to an embodiment of the invention;

FIG. 2 shows a schematic view of a substrate according to an embodiment of the invention;

fig. 3 shows a schematic diagram of an LED circuit according to an embodiment of the present invention.

In the figure, the position of the upper end of the main shaft,

1. a substrate; 2. a diffuser plate; 3. a fluorescent film; 4. a liquid crystal panel; 5. mini Led.

Detailed Description

The virtual display device provided by the invention is explained and explained in detail below with reference to the drawings of the specification.

The virtual display equipment can be AR or VR display equipment, such as AR glasses or VR glasses, and the Mini Led backlight system is adopted for display, so that the light is finely controlled by the illumination light source, and the limitations of the traditional AR/VR system and the like are broken. According to the invention, through the fine light control function of the Mini LED light source, the image quality of the contrast, the peak brightness and the color reduction degree of the whole picture are increased in multiples, and due to the fine light control function, the original LED which does not need to be started does not emit light according to the picture signal requirement, so that the effects of energy saving and electricity saving are achieved. The invention is described in detail below with reference to specific examples:

the invention provides a virtual display device, optionally, the virtual display device is an AR display device or a VR display device, the virtual display device includes a display module, as shown in fig. 1, the display module includes a liquid crystal panel 4, a plurality of Mini Led 5 are distributed on a lower layer of the liquid crystal panel 4, the Mini Led 5 are arranged in a partitioned manner, the Mini Led 5 can be controlled separately in a partitioned manner, useless stray light in the conventional AR/VR display module is avoided, a light source with partitioned control is emitted by the Mini Led 5, the light source irradiates an OPEN CELL (the liquid crystal panel 4) for imaging, and then the imaging is projected through a lens of an imaging part for imaging. The Mini Led 5 zones are independently controlled to realize fine light control of the light source, and the current can be regulated and controlled through a driving IC and a software algorithm, so that the overall contrast, the color reduction degree and the gray scale brightness control are better and richer.

As shown in fig. 1, the display module further includes: the base plate 1, mini Led 5 are distributed on the base plate 1; a diffusion plate 2 disposed on the substrate 1; a fluorescent film 3 disposed on the diffusion plate 2; the liquid crystal panel 4 is disposed on the fluorescent film 3. Optionally, the substrate 1 is a thin substrate, so that the whole display module can be thinner, which is beneficial to realizing the whole lightness and thinness. For example, the thin substrate includes: aluminum substrate, FR4 glass fiber board, glass substrate, CM3 substrate, ceramic substrate, or flexible FPC. Furthermore, the surface of the Mini Led 5 is packaged with a QD film or fluorescent powder through a film pressing process, so that the whole body is lighter and thinner.

Mini Led 5 are densely arranged on the substrate 1, pitch values among devices reach the micron level, the arrangement shape is regular, including rectangle, triangle, parallelogram, etc., irregular shapes can be used, as long as no obvious lamp shadow appears. In one embodiment, the plurality of Mini Led 5 are distributed in a rectangular array. Alternatively, the Mini Led 5 light source is in the form of a packaged Led with a package support or an Led package incorporating an optical lens, a direct chip packaged Led without a package, or the like.

Optionally, each Mini Led 5 is connected to a switch, i.e., a light control unit, and the on/off of the Mini Led 5 is controlled by the switch, so that each Mini Led 5 can be independently controlled by the switch, or a plurality of Mini Led 5 may be arranged in each partition, and the partitions are independently controlled, i.e., the Mini Led 5 in each partition is controlled in a unified manner, and the Mini Led 5 in different partitions are independently controlled. In one embodiment, as shown in fig. 2, the display device includes 25 Mini Led 5 in five rows and five columns, and correspondingly, 25 light-controlling units are provided, and one light-controlling unit is provided for each Mini Led 5. Or, the Mini Led 5 light source circuit can be divided into N separate Led zone control loops, that is, there are N light control units, the number of Mini Led 5 is M, and the range of N is 2 to M; through the mode that Mini Led 5 can be lighted alone or close in subregion to can realize the meticulous accuse light of subregion, but make whole visual angle, contrast, color reduction degree, grey scale light and shade control better abundant, also can avoid the shortcoming that traditional LED luminance is not enough simultaneously, very big improvement projection equipment luminance demand is in order to satisfy different application environment.

In this embodiment, the display module includes a plurality of partition control loops, and each partition control loop controls the opening and closing of the Mini Led 5 in one partition, so as to realize the partition independent control of the Mini Led 5. Optionally, the plurality of Mini Led 5 connection line forms adopt an AM driving form or a PM driving form. For example, in one embodiment, the circuit form adopts a PM driving mode, that is, a plurality of Mini Led 5 are distributed in an array, where there are scan lines M and column scan lines N, the anode of each column of Mini Led 5 in the array is connected to the column scan line, and the cathode of each row of Mini Led 5 is connected to the row scan line, when a specific Y-th column and X-th row of Led pixels are gated, the Led pixels at the crossing points (XY) are lighted. Alternatively, in another embodiment, the line format is AM driving mode, i.e. each Mini Led 5 pixel has its own independent driving circuit, and the driving current is provided by the driving transistor. Furthermore, because the adopted Mini Led 5 is small in size, the number of light sources which can be integrated in a unit area is more, the LED display panel has a larger visual angle, a higher refresh rate, a higher contrast ratio and a higher brightness, meanwhile, the LED power consumption is low, the generated heat is less, the service life is greatly prolonged, and the display performance is further improved.

The Mini Led 5 with the same color light in the Mini Led 5 is connected in series, and the Mini Led 5 with the plurality of color lights after being connected in series are connected in parallel. For example, as shown in fig. 3, in the present embodiment, five rows of Mini Led 5 are included, each row of Mini Led 5 is connected in series, and then the rows are connected in parallel.

According to the invention, the Mini Led backlight module is designed to realize the fine light control of the illumination light source, and the limitation of the display module side light emitting mode in the traditional AR/VR is broken. The invention ensures that the image quality of the contrast ratio, the peak value brightness and the color rendition degree of the whole picture are multiplied by fine light control of the Mini Led light source. And because of the fine light control function, the original LED which does not need to be started does not emit light according to the requirements of picture signals, thereby playing the roles of saving energy and electricity.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.

In the present invention, unless otherwise explicitly stated or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly, e.g., as being permanently connected, detachably connected, or integral; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the description herein, references to the description of the term "the present embodiment," "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Moreover, various embodiments or examples and features of various embodiments or examples described in this specification can be combined and combined by one skilled in the art without being mutually inconsistent.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless explicitly specified otherwise.

The invention is not limited to the above preferred embodiments, but includes all modifications, equivalents, and simplifications that may be made by those skilled in the art without departing from the spirit of the invention.

Claims

1. The virtual display equipment is characterized by comprising a display module, wherein the display module comprises a liquid crystal panel, a plurality of Mini leads are distributed on the lower layer of the liquid crystal panel and are arranged in a subarea mode, and the Mini leads can be controlled independently in a subarea mode.

2. The virtual display apparatus according to claim 1, wherein each Mini Led is connected to a switch, and the on/off of the Mini Led is controlled by the switch, and each Mini Led can be independently controlled by the switch.

3. The virtual display apparatus of claim 2, wherein the display module comprises a plurality of zone control loops, each zone control loop controlling the opening and closing of a Mini Led within a zone.

4. The virtual display device of claim 1, wherein the display module further comprises:

the Mini Led is distributed on the substrate;

a diffusion plate disposed on the substrate;

a fluorescent film disposed on the diffusion plate;

the liquid crystal panel is arranged on the fluorescent film.

5. The virtual display apparatus of claim 4, wherein the Mini leds of the same color light in the plurality of Mini leds are connected in series, and the Mini leds of the plurality of color lights after series connection are connected in parallel.

6. The virtual display apparatus of claim 5, wherein the Mini Led connection line form adopts an AM driving form or a PM driving form.

7. The virtual display apparatus according to claim 4, wherein the substrate is a thin substrate.

8. The virtual display device of claim 7, wherein the thin substrate comprises: aluminum substrate, FR4 glass fiber board, glass substrate, CM3 substrate, ceramic substrate, or flexible FPC.

9. The virtual display apparatus of claim 8, wherein the Mini Led surface is encapsulated with a QD film or phosphor by a lamination process.

10. The virtual display device of any of claims 1-9, wherein the virtual display device is an AR display device or a VR display device.