TW201819988A - Head mounted display - Google Patents

Abstract

A head mounted display includes a carrier having a transparent substrate, and a micro- organic light emitting diode (micro-OLED) array disposed on the transparent substrate. The resolution of the micro-OLED is greater than 800 pixels per inch.

Description

   Head-mounted display device   

The present disclosure relates to a head-mounted display device.

With the advancement of science and technology, people's demand for mobile multimedia information and game entertainment has grown rapidly, and general smart handheld mobile devices need to be viewed and used in a handheld or placed form. In addition to the lack of convenience, it is also vulnerable to privacy. Open issues exist.

Head-Mounted Display (hereinafter referred to as HMD) has been developed on the market, which is an optical display product. It is a small display (a total of two groups) placed in front of the left and right eyes. The output image is reflected and refracted by the optical components, and then projected to the user's retina separately, transmitted to the brain via the visual nerve of the human brain, and the images are recombined to produce a flat or three-dimensional image. However, this design requires an image source and an optical component to be mounted on the head-mounted display, so the volume and weight of the head-mounted display are increased, which is unfavorable for users to wear.

In order to solve the problem that the conventional head mounted display is too bulky, the present disclosure provides a head mounted display device, which reduces the volume of the head mounted display device by omitting the space required for light refraction and reflection.

An embodiment of the present disclosure provides a head-mounted display device including a carrier having at least one transparent substrate and a micro organic light emitting diode array disposed on the transparent substrate, wherein the resolution of the micro organic light emitting diode array is More than 800ppi (pixels per inch).

In one or more embodiments of the present disclosure, the transparent substrate includes at least one penetration region and at least one display region. The micro organic light emitting diode array is disposed in the display region, and the image of the display region and the scene of the penetration region are superimposed. .

In one or more embodiments of the present disclosure, the head-mounted display device further includes a transmission module. The transmission module is configured on the carrier and is electrically connected to the micro organic light emitting diode array to transmit the signal of the image source to the micro Organic light emitting diode array display.

In one or more embodiments of the present disclosure, the head-mounted display device further includes a flexible substrate and an adhesive layer. The micro organic light emitting diode array is formed on the flexible substrate, and the adhesive layer is used for the flexible substrate. Attach to a transparent substrate.

In one or more embodiments of the present disclosure, the refractive index of the adhesive layer is similar to the refractive index of the flexible substrate or the refractive index of the transparent substrate.

In one or more embodiments of the present disclosure, the material of the transparent substrate is glass, and the micro organic light emitting diode array is formed on the transparent substrate.

Another embodiment of the present disclosure discloses a head-mounted display device including a carrier and a plurality of micro organic light emitting diodes. The carrier includes at least one transparent substrate, wherein the transparent substrate includes at least one display area and at least one penetration area, and the micro organic light emitting diode is disposed in the display area, wherein the image of the display area and the scene of the penetration area overlap.

In one or more embodiments of the present disclosure, the area ratio of the display area to the penetration area is about 10% to 90%.

In one or more embodiments of the present disclosure, the display area may be disposed at a corner or a side of the transparent substrate.

In one or more embodiments of the present disclosure, the display area may be plural, and the display area may be dispersedly disposed on the transparent substrate.

In one or more embodiments of the present disclosure, the head-mounted display device further includes a flexible substrate and an adhesive layer. The micro organic light emitting diode is formed on the flexible substrate, and the adhesive layer is used to attach the transparent substrate. Attached to a transparent substrate.

In one or more embodiments of the present disclosure, the refractive index of the adhesive layer may be similar to the refractive index of the flexible substrate or the refractive index of the transparent substrate.

The disclosure provides a head-mounted display device including a transparent substrate having a display area and a transmission area. The micro organic light emitting diode array is disposed in the display area, and the transmission area remains transparent. As a result, the user can see a superimposed image of the image in the display area and the scene in the penetration area. Compared with the traditional head-mounted display using projection technology, the present disclosure can directly reduce the space required for the refraction and reflection of the light-emitting display device because the micro-organic light-emitting diode array is directly fabricated on the transparent substrate. Space and weight enhance user's wearing experience.

10, 200‧‧‧ head-mounted display device

100‧‧‧ carrier

102, 210, 310‧‧‧ transparent substrate

104‧‧‧display area

106‧‧‧ Penetration zone

110, 300‧‧‧ mini organic light emitting diode array

120‧‧‧Transmission Module

130‧‧‧control chip

140‧‧‧Power supply unit

220‧‧‧organic light emitting diode layer

230‧‧‧ flexible substrate

240‧‧‧ Adhesive layer

250‧‧‧ flexible circuit board

320‧‧‧first electrode

330‧‧‧ thin film transistor

340‧‧‧Organic luminescent material layer

350‧‧‧Second electrode

In order to make the above and other objects, features, advantages, and embodiments of the present disclosure more comprehensible, the detailed description of the drawings is as follows: FIG. 1 and FIG. 2 are different implementations of the head-mounted display device of the present disclosure. Schematic illustration.

3 and 4 are schematic cross-sectional views of different embodiments of the head-mounted display device of the disclosure.

FIG. 5 is a partial schematic diagram of a micro organic light emitting diode array in an embodiment of the head-mounted display device of the present disclosure.

FIG. 6 and FIG. 7 are partial front views of different applications of the disclosed head-mounted display device, respectively.

The following will clearly illustrate the spirit of this disclosure with drawings and detailed descriptions. Any person with ordinary knowledge in the technical field who understands the preferred embodiments of this disclosure can be changed and modified by the techniques taught in this disclosure. Without departing from the spirit and scope of this disclosure.

In order to solve the problems that the conventional head-mounted display is too large in space and is too heavy to be worn by the user, the present disclosure provides a head-mounted display device including a display area and a penetration area, wherein an image can be directly imaged on the head-mounted display. The display area of the display device, and the penetration area allows the user to observe the external environment. In other words, what the user sees is the result that the image in the display area is directly superimposed on the scene in the penetration area.

Referring to FIG. 1, it is a schematic diagram of an embodiment of a head-mounted display device according to the disclosure. The head-mounted display device 10 includes a carrier 100 and a micro organic light emitting diode array 110 disposed on the carrier 100. The carrier 100 may be any suitable head-mounted device, such as glasses, hard hats, game helmets, etc. The carrier 100 has a transparent substrate 102. The position of the transparent substrate 102 at least covers the field of view of the user, and the micro organic light emitting diode array 110 is disposed on the transparent substrate 102.

For example, in this embodiment, the carrier 100 is glasses, the transparent substrate 102 is a lens of the glasses, and the micro organic light emitting diode array 110 is disposed on the lens. In some embodiments, the material of the transparent substrate 102 is glass, and the micro organic light emitting diode array 110 can be directly formed on the transparent substrate 102 through a specific process, such as a low-temperature polycrystalline silicon process. Alternatively, in other embodiments, the micro organic light emitting diode array 110 may be fabricated on another substrate first, and then the micro organic light emitting diode array 110 is combined on the transparent substrate 102.

In this embodiment, the carrier 100 includes two lenses, that is, two transparent substrates 102, and the micro organic light emitting diode array 110 is disposed on only one of the transparent substrates 102. Although in this embodiment, the micro organic light emitting diode array 110 is disposed on the left eyeglass lens for description, in other embodiments, the micro organic light emitting diode array 110 may be disposed on the right eyeglass lens or on the left eyeglass lens. The spectacle lens and the right spectacle lens are respectively provided with a micro organic light emitting diode array 110.

In this embodiment, the head-mounted display device 10 is a mobile device, and the head-mounted display device 10 further includes a transmission module 120. The transmission module 120 is disposed on the carrier 100 and is electrically connected to the micro organic light emitting diode array 110 to transmit a signal of an image source to the micro organic light emitting diode array 110 for display. The transmission module 120 may be a wireless transmission module, such as Bluetooth, wifi, etc., and uses the wireless transmission technology to transmit the signal of the image source to the micro organic light emitting diode array 110 for display. The image source, for example, may include, but is not limited to, a desktop computer, a game console, a display, a smart phone, a tablet computer, a smart watch, and the like.

The mobile head-mounted display device 10 further includes a control chip 130. The control chip 130 is disposed on the carrier 100 and can be packaged in the same component as the transmission module 120. The control chip 130 is connected to the micro organic light emitting diode array 110 and the transmission module 120. The image signal provided by the transmission module 120 is driven by the control chip 130 to display the micro organic light emitting diode array 110.

The mobile head-mounted display device 10 further includes a power supply unit 140 disposed on the carrier 100. The power supply unit 140 may be a battery or a combination of a solar panel and a storage battery. The power supply unit 140 is connected to the transmission module 120 and the control chip 130 to provide the voltage required by the transmission module 120 and the micro organic light emitting diode array 110.

Or, in other embodiments, as shown in FIG. 2, the head-mounted display device 10 is a head-mounted display device for fixed-point use. At this time, the transmission module 120 may be a physical wire and directly connected. To the image source. In such a head-mounted display device 10 for fixed-point use, there is no need to provide an additional power supply unit on the carrier 100. In other words, the power required to drive the head-mounted display device 10 can be provided directly through an image source or commercial power.

Referring to FIG. 3, it is a schematic cross-sectional view of an embodiment of a head-mounted display device according to the disclosure. In this embodiment, the head-mounted display device 200 includes a transparent substrate 210 and an organic light emitting diode layer 220 formed directly on the transparent substrate 210, wherein the transparent substrate 210 may be a lens of a carrier. The organic light emitting diode layer 220 includes a micro organic light emitting diode array composed of a plurality of micro organic light emitting diodes. The organic light emitting diode layer 220 further includes a peripheral wiring design, and is electrically connected to the control chip.

In one embodiment, the organic light emitting diode layer 220 may be an active organic light emitting diode layer. The thin film transistor in the organic light emitting diode layer 220 is fabricated on the transparent substrate 210 through a low-temperature polycrystalline silicon process, and the organic light emitting material layer The lithography technology is used for positioning and vapor deposition on the transparent substrate 210, thereby achieving the purpose of fabricating a high-resolution micro organic light emitting diode array on the transparent substrate 210. The micro organic light emitting diode fabricated in this way Volume array, its resolution can reach 800PPI (pixels per inch) or above. In other embodiments, the organic light emitting diode layer 220 can also be fabricated on the transparent substrate 210 by other suitable processes.

The transparent substrate 210 may be a glass substrate or a high-temperature resistant plastic substrate, such as a PI substrate. One or more optical films may be selectively disposed on the transparent substrate 210, and the optical film and the organic light emitting diode layer 220 may be respectively disposed on opposite sides of the transparent substrate 210.

Refer to FIG. 4, which is a schematic cross-sectional view of another embodiment of the head-mounted display device of the present disclosure. In this embodiment, the head-mounted display device 200 includes a transparent substrate 210 and an organic light emitting diode layer 220 attached to the transparent substrate 210. The transparent substrate 210 may be a lens of the carrier, and the organic light emitting diode layer 220 and the carrier are separately manufactured, and then the organic light emitting diode layer 220 that is manufactured in advance is bonded to the carrier.

In this embodiment, the organic light emitting diode layer 220 can be fabricated on the flexible substrate 230, and then the flexible substrate 230 and the organic light emitting diode layer 220 thereon are attached to the transparent substrate 210 (carrier) through the adhesive layer 240. on. Compared with the previous embodiment, the transparent substrate 210 in this embodiment is no longer limited to a full-plane substrate, but can be applied to a curved substrate, which expands the application field of the head-mounted display device 200.

For example, the flexible substrate 230 can be coated on a glass substrate (not shown), and then the organic light emitting diode layer 220 is fabricated on the flexible substrate 230 by a low-temperature polycrystalline silicon process or other suitable processes. The thin film transistor is fabricated on the flexible substrate 230, and then positioned by a lithography process to vapor-deposit an organic light-emitting material layer on the flexible substrate 230. After that, the flexible substrate 230 is separated from the glass substrate to obtain a flexible substrate 230 provided with an organic light emitting diode layer 220.

In some embodiments, the flexible substrate 230 is also a transparent material, such as PI. The flexible substrate 230 can be attached to the transparent substrate 210 through the adhesive layer 240. In some embodiments, the adhesive layer 240 may be an optical adhesive or other transparent adhesive. The refractive index of the adhesive layer 240 is similar to that of the flexible substrate 230 or the transparent substrate 210 to reduce light passing through different layers. The phenomenon of refraction caused by the refractive index of the medium.

In order to connect the micro organic light emitting diode array and the control chip in the organic light emitting diode layer 220 (see FIG. 1), the head-mounted display device 200 further includes a flexible circuit board 250. The flexible circuit board 250 has wirings and Connection terminals. The micro organic light emitting diodes in the organic light emitting diode layer 220 are respectively connected to the control chip through the connection terminals on the flexible circuit board 250, so that the control chip can drive the micro organic light emitting diodes for display. In some embodiments, the control chip can even be fabricated directly on the flexible circuit board 250.

Referring to FIG. 5, it is a partial schematic diagram of a micro organic light emitting diode array in an embodiment of the head-mounted display device of the present disclosure. The micro organic light emitting diode array 300 is disposed on a transparent substrate 310, and the transparent substrate 310 may be a lens of a carrier or a flexible substrate. The micro organic light emitting diode array 300 includes a plurality of first electrodes 320, a plurality of thin film transistors 330, a plurality of organic light emitting material layers 340, and a second electrode 350 in order from the surface of the transparent substrate 310 from bottom to top. .

The first electrode 320 and the second electrode 350 have different polarities. For example, if the first electrode 320 is an anode, the second electrode 350 is a cathode. The thin film transistor 330 is disposed between the first electrode 320 and the second electrode 350. The thin film transistor 330 is connected to the first electrode 320, and the second electrode 350 is a common electrode of the micro organic light emitting diode array 300, corresponding to The organic light emitting material layer 340 is disposed between the first electrode 320 and the second electrode 350.

As described above, the thin film transistor 330 in this embodiment can be fabricated on the transparent substrate 310 through a low-temperature polycrystalline silicon process, and the organic light-emitting material layer 340 can be vapor-deposited on the first electrode 320 using a lithography technique. Both the thin-film transistor 330 and the organic light-emitting material layer 340 can be accurately positioned on the transparent substrate 310, so the purpose of thinning the organic light-emitting diode can be achieved.

Please refer to FIG. 6 and FIG. 7 at the same time, which are partial front views of different applications of the head-mounted display device disclosed in the present application. The main difference between the head-mounted display device 10 in FIGS. 6 and 7 is the arrangement of the micro organic light emitting diode array 110.

In the embodiment of FIG. 6, the transparent substrate 102 of the carrier 100 includes a display area 104 and a transmission area 106. The micro-organic light emitting diode array 110 is only disposed on the display area 104, and the transmission area 106 is not disposed. There is a micro organic light emitting diode array 110. The position of the display area 104 may be one of the corners of the transparent substrate 102, such as an upper left corner, an upper right corner, a lower left corner, or a lower right corner. Alternatively, the position of the display area 104 may be on the upper half, the lower half, the left half, or the right half of the transparent substrate 102.

In other words, a high-resolution and high-density micro-organic light-emitting diode array 110 is disposed in the display area 104 to display an image on the display area 104 after the micro-organic light-emitting diode array 110 is driven. The penetrating region 106 is transparent because the micro organic light emitting diode array 110 is not provided. When the user wears the head mounted display device 10, the picture seen from the eyes of the user will be a picture in which the image of the display area 104 is directly superimposed on the scene of the penetration area 106.

In the embodiment of FIG. 7, the number of the display areas 104 is multiple, the display areas 104 are dispersedly distributed on the transparent substrate 102, and the penetration areas 106 are located between the display areas 104. The micro organic light emitting diode array 110 is only disposed on the display area 104 to display an image on the display area 104, and the transmission area 106 is maintained transparent. By appropriately adjusting the density of the micro organic light emitting diode array 110 in the display area 104 and adjusting the position and proportional relationship between the display area 104 and the penetration area 106, the user can wear the head-mounted display device 10 At this time, in the transparent substrate 102, a superimposed view and a superimposed image are seen. Compared with the previous embodiment, although the image of the display area 104 in this embodiment may be rough, the compatibility with the surrounding scene is better.

The ratio and positional relationship between the display area 104 and the penetration area 106 in FIGS. 6 and 7 can be adjusted according to different design requirements. For example, the area ratio of the display area 104 and the penetration area 106 is about 10 Between 100% and 90%, the display area 104 may be centrally disposed on one corner or one side of the transparent substrate 102, or the display area 104 and the transmission area 106 may be evenly dispersed on the transparent substrate 102. In this way, the user can see the image displayed on the display area 104 and the scene of the penetration area 106 from the transparent substrate 102.

In summary, the present disclosure provides a head-mounted display device including a transparent substrate, the transparent substrate having a display area and a penetration area, wherein the micro organic light emitting diode array is disposed in the display area, and the penetration area It remains transparent, so that the user can see the superimposed image of the image in the display area and the scene in the penetration area. Compared with the traditional head-mounted display using projection technology, the present disclosure can directly reduce the space required for the refraction and reflection of the light-emitting display device because the micro-organic light-emitting diode array is directly fabricated on the transparent substrate. Space and weight enhance user's wearing experience.

Although this disclosure has been disclosed as above with a preferred embodiment, it is not intended to limit this disclosure. Any person skilled in this art can make various changes and decorations without departing from the spirit and scope of this disclosure. The scope of protection disclosed shall be determined by the scope of the attached patent application.

Claims (12)

    A head-mounted display device includes: a carrier including at least one transparent substrate; and a micro organic light emitting diode array disposed on the transparent substrate, wherein a resolution of the micro organic light emitting diode array is greater than 800 ppi ( pixels per inch).         The head-mounted display device according to claim 1, wherein the transparent substrate includes at least one penetration area and at least one display area, and the micro organic light emitting diode array is disposed in the display area, and the image of the display area and the Scenes in the penetrating zone overlap.         The head-mounted display device according to claim 1, further comprising: a transmission module configured on the carrier and electrically connected to the micro organic light emitting diode array to transmit a signal from an image source to the micro organic Light-emitting diode array display.         The head-mounted display device according to claim 1, further comprising: a flexible substrate, the micro organic light emitting diode array is formed on the flexible substrate; and an adhesive layer for the flexible type A substrate is attached to the transparent substrate.         The head-mounted display device according to claim 4, wherein the refractive index of the adhesive layer is similar to the refractive index of the flexible substrate or the refractive index of the transparent substrate.         The head-mounted display device according to claim 1, wherein a material of the transparent substrate is glass, and the micro organic light emitting diode array is formed on the transparent substrate.         A head-mounted display device includes: a carrier including at least one transparent substrate, wherein the transparent substrate includes at least one display area and at least one penetration area; and a plurality of micro organic light emitting diodes disposed only on the at least one The display area, wherein the image of the display area and the scene of the penetration area are superimposed.         The head-mounted display device according to claim 7, wherein an area ratio of the display area to the penetration area is about 10% to 90%.         The head-mounted display device according to claim 7, wherein the display area is disposed at a corner or a side of the transparent substrate.         The head-mounted display device according to claim 7, wherein the at least one display area is plural, and the display areas are dispersedly disposed on the transparent substrate.         The head-mounted display device according to claim 7, further comprising: a flexible substrate, the micro organic light emitting diodes are formed on the flexible substrate; and an adhesive layer for the flexible type A substrate is attached to the transparent substrate.         The head-mounted display device according to claim 11, wherein the refractive index of the adhesive layer is approximately the refractive index of the flexible substrate or the refractive index of the transparent substrate.