Display module and head-mounted display device

Abstract

The application discloses a display module and a head-mounted display device, which comprise a display screen and a driving chip, the display screen comprises a circuit layer, a light shielding layer and an infrared light emitting layer arranged on a side, away from the circuit layer, of a light shielding area in the light shielding layer, the anode film layer and the cathode film layer of the infrared light emitting layer are connected with the circuit layer, and the circuit layer is connected with the driving chip; the driving chip is used for driving the infrared light emitting layer to emit infrared light through the circuit layer to illuminate eyeballs of a user so as to track the eyeballs of the user when the device is in a display state; in the application, the infrared light emitting layer is arranged in the display screen, is not limited by the space of the head-mounted display device and is beneficial to the miniaturization and thinning development of the head-mounted display device.

Description

Technical Field

[0001] This invention relates to the field of head-mounted device technology, and in particular to a display module and a head-mounted display device. Background Technology

[0002] Currently, implementing eye-tracking functionality in head-mounted displays requires adding multiple infrared lights between the display screen and the corresponding eye area to illuminate the eyes. However, this method of setting up multiple infrared lights requires sufficient space, increasing the size of the head-mounted device and making it difficult to achieve a thinner and lighter VR product.

[0003] Therefore, how to provide a display module and a head-mounted display device that facilitate the thinner and lighter design of head-mounted devices has become a problem that needs to be solved by those skilled in the art. Summary of the Invention

[0004] The purpose of this invention is to provide a display module and a head-mounted display device that facilitates the miniaturization and thinning of head-mounted display devices during use.

[0005] To address the aforementioned technical problems, this invention provides a display module, including a display screen and a driver chip. The display screen includes a circuit layer, a light-shielding layer, and an infrared emitting layer disposed on the side of the light-shielding area away from the circuit layer in the light-shielding layer. The anode and cathode film layers of the infrared emitting layer are both connected to the circuit layer, and the circuit layer is connected to the driver chip. The driver chip is used to drive the infrared emitting layer to emit infrared light through the circuit layer when the device is in display mode.

[0006] Optionally, the driver chip is also configured to control the circuit layer to stop supplying power to the infrared emitting layer when the device is not in a display state.

[0007] Optionally, the anodic film layer of the infrared emitting layer is deposited on the side of the light-shielding area away from the circuit layer; the cathode film layer is deposited on the side of the light-shielding area close to the circuit layer.

[0008] Optionally, the driver chip is configured to drive the infrared emitting layer to emit light through the circuit layer when a display command is received; and to control the circuit layer to stop supplying power to the infrared emitting layer when a sleep command is received.

[0009] Optionally, a corresponding infrared emitting layer is provided on each of the light-shielding areas at a preset position in the light-shielding layer.

[0010] Optionally, each of the outermost light-shielding areas in the light-shielding layer is provided with a corresponding infrared emitting layer.

[0011] Optionally, the infrared emitting layer includes an anode film layer, an infrared emitting material layer, and a cathode film layer, wherein the infrared emitting material layer is disposed between the anode film layer and the cathode film layer.

[0012] Optionally, the light-shielding areas in the light-shielding layer are distributed in a matrix form.

[0013] This invention provides a head-mounted display device, including the display module as described above.

[0014] This invention provides a display module and a head-mounted display device, including a display screen and a driver chip. The display screen includes a circuit layer, a light-shielding layer, and an infrared emitting layer disposed on the side away from the circuit layer in the light-shielding area of ​​the light-shielding layer. The anode film layer and cathode film layer of the infrared emitting layer are both connected to the circuit layer, and the circuit layer is connected to the driver chip. The driver chip is used to drive the infrared emitting layer to emit infrared light through the circuit layer when the device is in display mode.

[0015] As can be seen, in this embodiment of the invention, an infrared emitting layer is set on the light-shielding area in the light-shielding layer of the display screen, and both the anode film layer and the cathode film layer of the infrared emitting layer are connected to the circuit layer of the display screen. The circuit layer is connected to the driving chip. When the driving chip determines that the device is in the display state, it drives the infrared emitting layer to emit infrared light through the circuit layer to illuminate the user's eyeballs for eye tracking. In this invention, the infrared emitting layer is set inside the display screen, which is not limited by the space of the head-mounted display device and is conducive to the miniaturization and thinning of the head-mounted display device. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the prior art and embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of a display module provided in an embodiment of the present invention;

[0018] Figure 2 This is a schematic diagram of another display module provided in an embodiment of the present invention;

[0019] Figure 3 This is a schematic diagram of another display module provided in an embodiment of the present invention;

[0020] Figure 4 A schematic diagram of the distribution of an infrared emitting layer is provided for an embodiment of the present invention;

[0021] Figure 5This is another schematic diagram of the infrared emitting layer distribution provided in an embodiment of the present invention;

[0022] Figure 6 This is a schematic diagram of an infrared emitting layer structure provided in an embodiment of the present invention. Detailed Implementation

[0023] This invention provides a display module and a head-mounted display device, which facilitates the miniaturization and thinning of head-mounted display devices during use.

[0024] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] Please refer to Figure 1 , Figure 1 This is a schematic diagram of a display module provided in an embodiment of the present invention. The display module includes a display screen 1 and a driving chip 2. The display screen 1 includes a circuit layer 11, a light-shielding layer 12, and an infrared emitting layer 13 disposed on the side of the light-shielding area 121 of the light-shielding layer 12 away from the circuit layer 11. The anode film layer 131 and the cathode film layer 132 of the infrared emitting layer 13 are both connected to the circuit layer 11, and the circuit layer 11 is connected to the driving chip 2. The driving chip 2 is used to drive the infrared emitting layer 13 to emit infrared light through the circuit layer 11 when the device is in display mode.

[0026] It should be noted that, in this embodiment of the invention, an infrared emitting layer 13 can be provided on the light-shielding area 121 of the light-shielding layer 12 of the display screen 1. Specifically, a polar film layer can be deposited on the light-shielding area 121 first, then an infrared emitting material layer can be provided on the polar film layer, and then another polar film layer can be deposited on the infrared emitting material layer, thereby forming an infrared emitting layer 13 on the light-shielding area 121. The infrared emitting layer 13 is located on the side of the light-shielding area 121 away from the circuit layer 11, so that the infrared light emitted by the infrared emitting layer 13 is not blocked and can be emitted. The infrared emitting layer 13 has two polar film layers, namely an anode film layer 131 and a cathode film layer 132. Both the anode film layer 131 and the cathode film layer 132 are connected to the circuit layer 11, which is connected to the driver chip 2. When the driver chip 2 detects that the device is in display mode, the driver chip 2 controls the circuit layer 11 to supply power to the cathode film layer 132 and the anode film layer 131 of the infrared emitting layer 3, so that the infrared emitting layer 3 emits infrared light to illuminate the user's eyes for eye tracking.

[0027] It should be noted that, in this embodiment of the invention, an infrared emitting layer 13 is provided on a light-shielding area 121. Multiple light-shielding areas 121 can be selected in advance, and then a corresponding infrared emitting layer 13 can be provided on each of the selected light-shielding areas 121.

[0028] In addition, in practical applications, the light-shielding areas 121 in the light-shielding layer 12 are distributed in a matrix form, and the light-shielding layer 12 can be a black light-shielding layer, and the light-shielding areas 121 are distributed in a matrix form, specifically the BM (Black Matrix) area.

[0029] Furthermore, in order to further save energy, the driving chip 2 in this embodiment of the invention is also used to control the circuit layer 11 to stop supplying power to the infrared emitting layer 13 when the device is not in the display state.

[0030] It is understood that when the driver chip 2 detects that the device is not in a display state, the driver chip 2 controls the circuit layer 11 to stop supplying power to the cathode layer 132 and anode layer 131 of the infrared emitting layer 3, thereby causing the infrared emitting layer 3 to stop emitting infrared light. That is, the driver chip 2 in this embodiment of the invention can automatically control the infrared emitting layer 13 to emit light according to the display state of the device.

[0031] Furthermore, the anode film 131 of the infrared emitting layer 13 is deposited on the side of the light-shielding area 121 away from the circuit layer 11; the cathode film 132 is deposited on the side of the light-shielding area 121 close to the circuit layer 11.

[0032] It should be noted that, as Figure 2 and Figure 3 As shown, in this embodiment of the invention, the anode film layer 131 of the infrared emitting layer 13 is specifically disposed on the upper surface of the light-shielding area 121, and the cathode film layer 132 is disposed on the lower surface of the light-shielding area 121, making the circuit design more convenient.

[0033] in, Figure 2 This is a side view of a display screen using COF (Chip On Flex, Chip On Film) polarization. From bottom to top, the layers are: a first glass cover layer, a circuit layer 11 (specifically, a TFT (Thin Film Transistor) circuit) disposed above the first glass cover layer, an insulating layer disposed above the circuit layer 11, and a wiring layer ITO (Indium Tin Oxides) transparent conductive film disposed above the insulating layer (e.g., ...). Figure 2The light-shielding layer 12 is disposed above the trace layer and the light-shielding layer 13 is disposed above the light-shielding layer 12. Display pixels (i.e., red, green and blue resistive A) are provided between each light-shielding area 121 in the light-shielding layer 12. An infrared emitting layer 13 is disposed above the light-shielding area 121 and a second glass cover layer is disposed above the infrared emitting layer 13.

[0034] Figure 3 The side view diagram of the display screen with COA polarization is shown below. From bottom to top, the structure consists of a first glass cover layer, a VCOM electrode layer disposed above the first glass cover layer, a circuit layer 11 (specifically, a TFT circuit) disposed above the electrode layer, an insulating layer disposed above the circuit layer 11, and display pixels (i.e., red, green, and blue color resistors) spaced apart in the insulating layer. Each color resistor connects the electrode layer and the upper surface of the insulating layer. An ITO (Integrated Tolerancing) layer is disposed above the insulating layer. Figure 3 The structure includes a Pixel ITO layer, a liquid crystal layer above the wiring layer, a light-shielding layer 12 above the liquid crystal layer, an infrared emitting layer 13 above the light-shielding area 121, and a second glass cover layer above the infrared emitting layer 13. Figure 3 PS in the text stands for isolation column. Figure 2 This also includes isolation columns (not shown).

[0035] As can be seen from the above, the arrangement of the red light-emitting layer 13 in the embodiments of the present invention can be applied to displays with various structures. The specific arrangement can be determined according to actual needs, and the embodiments of the present invention do not impose any special limitations.

[0036] Furthermore, the driver chip 2 is used to drive the infrared emitting layer 13 to emit light through the circuit layer 11 when a display command is received; and to control the circuit layer 11 to stop supplying power to the infrared emitting layer 13 when a sleep command is received.

[0037] Specifically, in this embodiment of the invention, the driver chip 2 can, upon receiving a display command from an upper-layer application, indicate that the device is about to enter display mode. At this time, it can control the circuit layer 11 to supply power to the infrared emitting layer 13, causing the infrared emitting layer 13 to start emitting infrared light. Conversely, when the driver chip 2 receives a sleep command from an upper-layer application, it indicates that the device is about to enter a non-display state. At this time, it can control the circuit layer 11 to stop supplying power to the infrared emitting layer 13, causing the infrared emitting layer 13 to stop emitting infrared light.

[0038] Furthermore, each light-shielding area 121 at a preset position in the light-shielding layer 12 is provided with a corresponding infrared emitting layer 13.

[0039] That is, in actual application, the light-shielding area 121 where the infrared emitting layer 13 needs to be set can be determined in the light-shielding layer 12 according to actual needs, and then the infrared emitting layer 13 can be set on the light-shielding area 121 at these preset positions.

[0040] Specifically, such as Figure 4 As shown, corresponding infrared emitting layers 13 can be respectively set on each of the outermost light-shielding areas 121 in the light-shielding layer 12. Alternatively, it can be arranged as follows... Figure 5 The method shown is to set a corresponding infrared emitting layer 13 on each light-blocking area 121 of the black matrix 12. Of course, the specific selection of the preset position can be determined according to actual needs, and this embodiment of the invention will not elaborate on this.

[0041] Furthermore, the infrared emitting layer 13 involved in the embodiments of the present invention may include an anode film layer 131, an infrared emitting material layer 133, and a cathode film layer 132. The infrared emitting material layer 133 is disposed between the anode film layer 131 and the cathode film layer 132. Please refer to [the relevant documentation] for details. Figure 6 Specifically, the infrared luminescent material layer 133 can be made based on an infrared luminescent material, and the specific infrared luminescent material used can be determined according to actual needs. This embodiment of the invention does not impose any special limitations on this.

[0042] As can be seen, in this embodiment of the invention, an infrared emitting layer is set on the light-shielding area in the light-shielding layer of the display screen, and both the anode film layer and the cathode film layer of the infrared emitting layer are connected to the circuit layer of the display screen. The circuit layer is connected to the driving chip. When the driving chip determines that the device is in the display state, it drives the infrared emitting layer to emit infrared light through the circuit layer to illuminate the user's eyeballs for eye tracking. In this invention, the infrared emitting layer is set inside the display screen, which is not limited by the space of the head-mounted display device and is conducive to the miniaturization and thinning of the head-mounted display device.

[0043] Based on the above embodiments, this invention provides a head-mounted display device, including the display module as described above.

[0044] Specifically, the head-mounted display device in this embodiment of the invention can be a VR device or an AR device.

[0045] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0046] It should also be noted that, in this specification, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0047] Those skilled in the art will further recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of both. To clearly illustrate the interchangeability of hardware and software, the components and steps of the various examples have been generally described in terms of functionality in the foregoing description. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementations should not be considered beyond the scope of this invention.

[0048] The steps of the methods or algorithms described in conjunction with the embodiments disclosed herein can be implemented directly by hardware, a software module executed by a processor, or a combination of both. The software module can be located in random access memory (RAM), main memory, read-only memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, removable disk, CD-ROM, or any other form of storage medium known in the art.

[0049] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A display module, characterized in that, The device includes a display screen and a driver chip. The display screen includes a circuit layer, a light-shielding layer, and an infrared emitting layer disposed on the side of the light-shielding area away from the circuit layer in the light-shielding layer. The infrared emitting layer includes an anode film layer, an infrared emitting material layer, and a cathode film layer. The infrared emitting material layer is disposed between the anode film layer and the cathode film layer. The anode film layer of the infrared emitting layer is deposited on the side of the light-shielding area away from the circuit layer. The cathode film layer is deposited on the side of the light-shielding area close to the circuit layer. Both the anode film layer and the cathode film layer of the infrared emitting layer are connected to the circuit layer, and the circuit layer is connected to the driver chip. The driver chip is used to drive the infrared emitting layer to emit infrared light through the circuit layer when it receives a display command from an upper-layer application, and is also used to control the circuit layer to stop supplying power to the infrared emitting layer when it receives a sleep command from an upper-layer application. In this light-shielding layer, each of the outermost light-shielding areas is provided with a corresponding infrared emitting layer, and the light-shielding areas in the light-shielding layer are distributed in a matrix form; one infrared emitting layer is provided on each light-shielding area. When the driver chip detects that the device is not in display mode, it controls the circuit layer to stop supplying power to the infrared emitting layer, so that the infrared emitting layer stops emitting infrared light.

2. A head-mounted display device, characterized in that, Includes the display module as described in claim 1.

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