CN114296233A - Display module, manufacturing method thereof and head-mounted display device - Google Patents
Display module, manufacturing method thereof and head-mounted display device Download PDFInfo
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- CN114296233A CN114296233A CN202210008891.XA CN202210008891A CN114296233A CN 114296233 A CN114296233 A CN 114296233A CN 202210008891 A CN202210008891 A CN 202210008891A CN 114296233 A CN114296233 A CN 114296233A
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- 238000012545 processing Methods 0.000 abstract description 19
- 230000002349 favourable effect Effects 0.000 abstract description 14
- 210000001508 eye Anatomy 0.000 description 19
- 238000005516 engineering process Methods 0.000 description 15
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Abstract
The embodiment of the application provides a display module, a manufacturing method of the display module and head-mounted display equipment. The display module assembly includes: the display panel comprises a display area and a frame area; the photosensitive unit is positioned in the frame area; the optical tracking structure comprises an optical lens, a frame used for fixing the lens and a light through port arranged on the frame, wherein the light through port is used for transmitting light of different positions of an eyeball to the photosensitive unit so as to track the eyeball. In the embodiment of the present application, the photosensitive unit is located in the frame region of the display panel, and the light-passing opening in the optical tracking structure is located on the frame of the optical lens. The distance of the light-passing opening in the optical tracking structure from the photosensitive unit is on the millimeter level, and the arrangement is favorable for improving the distance between the light-passing opening and the photosensitive unit, so that the processing difficulty of the light-passing opening and the photosensitive unit is reduced, and the accurate eyeball tracking function is realized.
Description
Technical Field
The application relates to the technical field of display, in particular to a display module, a manufacturing method of the display module and head-mounted display equipment.
Background
With the development of Virtual Reality (VR) technology and Augmented Reality (AR) technology, the performance requirements of head-mounted display devices are higher and higher. The eye tracking function applied to the head-mounted display device is gradually becoming the standard of the head-mounted display device because the product can be provided with advantages in various aspects such as interaction, display, rendering and content. The head mounted display device may include a head mounted VR device, a head mounted AR device, and the like.
In the related art, the eye tracking function is integrated on a head-mounted display device, which mainly includes an optical tracking structure, a photosensitive unit, and a light source, wherein the optical tracking structure is provided with a light-passing opening. However, the optical tracking structure is not reasonably arranged on the head-mounted display device, so that the requirements on the processing technology of the photosensitive unit and the light-transmitting port are high, and the accurate eyeball tracking function is difficult to realize.
Disclosure of Invention
An object of the embodiment of the application is to provide a display module assembly, a manufacturing method thereof and a head-mounted display device, so as to be beneficial to reducing the processing technology requirements of a photosensitive unit and a light through port, and further be beneficial to realizing a more accurate eyeball tracking function. The specific technical scheme is as follows:
the application provides a display module assembly in a first aspect, include: the display panel comprises a display area and a frame area; the photosensitive unit is positioned in the frame area; the optical tracking structure comprises an optical lens, a frame used for fixing the lens and a light through port arranged on the frame, wherein the light through port is used for transmitting light of different positions of an eyeball to the photosensitive unit so as to track the eyeball.
The display module assembly of this application embodiment is through changing the position of optics tracking structure on the display module assembly to be favorable to reducing the processing technology degree of difficulty of photosensitive unit and logical light mouth. The display module comprises a display panel, an optical lens and a frame for fixing the optical lens. The display panel comprises a display area and a frame area. The display panel is used for displaying virtual image information, and the optical lens transmits the information of the display panel to human eyes, so that the function of virtual reality or augmented reality of the display panel is realized.
The eyeball tracking function implementation process of the embodiment of the application is as follows: the reflection light of people's eye passes through on the logical light mouth transmits the photosensitive element, because the reflectivity of pupil and eyeball other positions has the difference, consequently, can gather the light of different light intensity on photosensitive element. It is understood that the region where the intensity of the reflected light is the smallest is the pupil region. That is, the area with the minimum reflected light intensity can be determined as the target area corresponding to the pupil by comparing the intensity of the reflected light collected by the light sensing unit. Furthermore, the fixation point coordinate of the pupil can be calculated by the position through the mapping relation established in advance. Wherein, the mapping relation comprises: the position relation between human eyes and the photosensitive units and the position relation between the photosensitive units and the pixel units in the display area. Specifically, after the pupil center position in the eyeball is determined, the region to which the human eye is gazing is determined based on the above mapping relationship, and image rendering is performed in the region to realize the eyeball tracking function.
In the related art, the optical tracking structure is located on a Cover glass (commonly called Cover glass) of the display panel, and the photosensitive unit is located on an array substrate of the display panel, and the vertical distance between the Cover glass and the array substrate is about several hundreds of micrometers, which is usually not more than 750 μm. That is, the distance between the light-passing opening of the optical tracking structure and the photosensitive unit is in the order of hundreds of micrometers, which causes more technical problems. On one hand, the light-passing port and the photosensitive unit with small width are required to be processed, the processing difficulty is high in the current process level, and even if the processing is possible, the performance of a final system is greatly influenced by small fluctuation in the process; on the other hand, because the light-passing port in the optical tracking structure is close to the photosensitive unit, the difficulty is high when the optical tracking structure and the photosensitive unit are aligned, and the alignment precision is difficult to ensure; in a third aspect, since the required width of the photosensitive unit is small, in order to achieve the resolution sensitivity of the photosensitive unit and to improve the signal-to-noise ratio as much as possible, the area of the photosensitive unit needs to be as large as possible, which leads to the photosensitive unit being in a strip shape with a very high aspect ratio, and a large parasitic resistance appears on the photosensitive unit in such a shape, which further leads to the photosensitive unit being unstable and also causing severe interference to the photosensitive unit, thereby affecting the normal use of the eyeball tracking function.
In the embodiment of the present application, the photosensitive unit is located in a frame region of the display panel, and the light-passing opening in the optical tracking structure is located on a frame of the optical lens. The distance between the optical lens and the display panel is above millimeter level, that is, the distance between the light-passing port in the optical tracking structure and the photosensitive unit is above millimeter level. Thus, the distance between the light through opening and the photosensitive unit can be increased. On the first hand, the processing technology difficulty of the light through port and the photosensitive unit is favorably reduced, and the accurate eyeball tracking function is further realized; in the second aspect, the alignment precision of the optical tracking structure and the photosensitive unit is favorably ensured; in the third aspect, it is also advantageous to improve the parasitic resistance on the light sensing unit, thereby advantageously ensuring the stability and performance of the light sensing unit.
According to the display module of this application embodiment, still can have following additional technical characterstic:
in some embodiments of the present application, the display module further includes an infrared light source, and the infrared light source is used for emitting light to the eyeball.
In some embodiments of the present application, the light-passing opening is filled with a material with a high refractive index for transmitting infrared light and cutting visible light.
In some embodiments of the present application, the photosensitive units are multiple and distributed around the frame area, and the light passing openings are multiple and correspond to the photosensitive units one to one;
or, the photosensitive units are distributed around the frame area, and the light-passing opening is one;
or, the photosensitive units are distributed around the frame area, the light through openings are multiple, and the number of the light through openings is larger than that of the photosensitive units.
In some embodiments of the present application, the display module further includes an infrared reflecting mirror, and the infrared reflecting mirror is used for transmitting the reflected light of the eyeball to the light through port.
In some embodiments of the present application, the light admission port comprises a plurality of equally sized and equidistant slits.
The second aspect of the present application provides a method for manufacturing a display module, which includes:
providing a display panel, wherein the display panel comprises a display area and a frame area;
providing a photosensitive unit, wherein the photosensitive unit is positioned in the frame area;
providing an optical tracking structure, wherein the optical tracking structure comprises an optical lens, a frame for fixing the lens and a light through port arranged on the frame, and the light through port is used for transmitting light of different positions of an eyeball to the photosensitive unit for eyeball tracking.
According to the display module formed by the method, the photosensitive unit is located in the frame area of the display panel, and the light through port in the optical tracking structure is located on the frame of the optical lens. The distance between the optical lens and the display panel is above millimeter level, that is, the distance between the light-passing port in the optical tracking structure and the photosensitive unit is above millimeter level. Set up like this, be favorable to improving the distance of logical light mouth and light-sensitive unit to reduce the processing technology degree of difficulty to logical light mouth and light-sensitive unit, and then be favorable to realizing accurate eyeball tracking function.
According to the manufacturing method of the display module, the manufacturing method can further have the following additional technical characteristics:
in some embodiments of the present application, the method further comprises:
providing an infrared light source for emitting light to the eyeball.
In some embodiments of the present application, the method further comprises:
and providing an infrared reflecting mirror which is used for transmitting the reflected light of the eyeball to the light through opening.
A third aspect of the present application provides a head-mounted display device, comprising the display module according to the first aspect.
The head-mounted display device of the embodiment of the application is integrated with an eyeball tracking function. In the display module, the photosensitive unit is located in a frame area of the display panel, and the light through port in the optical tracking structure is located on a frame of the optical lens. The distance between the optical lens and the display panel is above millimeter level, that is, the distance between the light-passing port in the optical tracking structure and the photosensitive unit is above millimeter level. Set up like this, be favorable to improving the distance of logical light mouth and light-sensitive unit to reduce the processing technology degree of difficulty to logical light mouth and light-sensitive unit, and then be favorable to realizing accurate eyeball tracking function.
Of course, not all advantages described above need to be achieved at the same time in the practice of any one product or method of the present application.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and it is also obvious for a person skilled in the art to obtain other embodiments according to the drawings.
Fig. 1 is a schematic structural view illustrating an integrated eye tracking function of a display module according to the related art;
FIG. 2 is a schematic diagram of a position structure of a photosensitive unit and a light shielding layer in the related art;
FIG. 3 is a schematic diagram illustrating the propagation of the light path of the light-sensing unit, the light-passing opening and the eyeball in the related art;
FIG. 4 is a schematic structural diagram of a display module according to an embodiment of the present disclosure;
FIG. 5 is a schematic structural diagram of a light-passing port according to an embodiment of the present application;
fig. 6 is a flowchart of a method for manufacturing a display module according to an embodiment of the present disclosure.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments that can be derived by one of ordinary skill in the art from the description herein are intended to be within the scope of the present disclosure.
With the development of Virtual Reality (VR) technology and Augmented Reality (AR) technology, the performance requirements of head-mounted display devices are higher and higher. The eye tracking function applied to the head-mounted display device is gradually becoming the standard of the head-mounted display device because the product can be provided with advantages in various aspects such as interaction, display, rendering and content.
There are various ways to implement an eye tracking function on a head-mounted display device. For example, a device with an eye tracking function is used in combination with a head-mounted display device; or, the module with the eyeball tracking function is integrated on the head-mounted display device. The head mounted display device may include a head mounted VR device, a head mounted AR device, and the like. Fig. 1 and 2 are schematic structural diagrams illustrating an eyeball tracking function integrated on a display module 100 of a head-mounted display device in the related art. FIG. 2 is a schematic diagram of the position structure of the photosensitive unit 50 and the light-shielding layer 40 in the display panel 60. The display module 100 includes a light source module 20, a light shielding layer 40 having a light-passing opening 30 structure, and a display panel 60 integrated with a photosensitive unit 50. The light-through opening 30 structure is arranged on the light-shielding layer 40 of the module and is matched with the photosensitive unit 50, so that the eyeball tracking function is realized. The light shielding layer 40 is disposed on a Cover glass 70(Cover glass) of the display panel 60, and the photosensitive unit 50 is disposed opposite to the substrate 80 of the display panel 60.
The process of realizing the eyeball tracking function comprises the following steps: the reflection light of people's eye passes through on the logical light mouth transmits the photosensitive element, because the reflectivity of pupil and eyeball other positions has the difference, consequently, can gather the light of different light intensity on photosensitive element. It is understood that the region where the intensity of the reflected light is the smallest is the pupil region. That is, the area with the minimum reflected light intensity can be determined as the target area corresponding to the pupil by comparing the intensity of the reflected light collected by the light sensing unit.
Furthermore, the fixation point coordinate of the pupil can be calculated by the position through a mapping relation established in advance. Wherein, the mapping relation comprises: the position relationship between human eyes and the photosensitive units, and the position relationship between the photosensitive units and the pixel units in the display area. Specifically, after the pupil center position in the eyeball is determined, the region to which the human eye is gazing is determined based on the above mapping relationship, and image rendering is performed in the region to realize the eyeball tracking function.
However, there are several problems as follows. As shown in fig. 2, there is a general demand for the light and thin display module 100 of the head-mounted display device, and the vertical distance L between the cover glass 70 and the substrate 80 in the display panel 60 is about hundreds of microns, and is usually less than 750 μm. That is, the distance from the light-transmitting opening 30 of the optical tracking structure to the light-sensitive unit 50 is about 750 μm, which requires the light-transmitting opening and the light-sensitive unit to be formed with a small width. The dimensions of the light-admitting opening and the light-sensitive cell that need to be fabricated at an optical path length of 750 μm are specifically analyzed below. As shown in fig. 3, assuming that the resolution accuracy f of the human eye is 500 μm, the distance H between the human eye and the light-transmitting opening is 60mm, and the optical path length L, i.e., the distance from the light-transmitting opening 30 to the light-sensing unit 50, is about 750 μm. The width of the light-transmitting opening and the light-sensitive cells can be found to be 3 μm by approximate calculation. It is clear that it is easily understood that the problem of the first aspect is the great difficulty of processing the optical tracking structure and the light sensitive unit. In addition, if the demand for the display module 100 to be more lightweight and thinner is further increased in the future, the processing requirements for the light-passing opening 30 and the photosensitive unit 50 are also more severe. Further, even though the processing is possible, in the processing process, small fluctuations in the process will affect the performance of the final system to a large extent, thereby being not conducive to realizing an accurate eye tracking function; on the other hand, because the light-passing port in the optical tracking structure is close to the photosensitive unit, the difficulty is high when the optical tracking structure and the photosensitive unit are aligned, and the alignment precision is difficult to ensure; in a third aspect, since the required width of the photosensitive unit is small, in order to satisfy the requirement of the resolution sensitivity of the photosensitive unit and to improve the signal-to-noise ratio as much as possible, the area of the photosensitive unit needs to be as large as possible, which leads to the photosensitive unit being in a strip shape with a very high length-to-width ratio, and a large parasitic resistance appears on the photosensitive unit in such a shape, which further leads to the photosensitive unit being unstable and also causing severe interference to the photosensitive unit, thereby affecting the normal use of the eyeball tracking function.
Based on the above problems, the embodiment of the application provides a display module 100, a manufacturing method thereof and a head-mounted display device, so as to be beneficial to reducing the processing requirements of the photosensitive unit 50 and the light-through opening 30, and further be beneficial to realizing a more accurate eyeball tracking function.
As shown in fig. 4, a display module 100 includes a display panel 60, a photosensitive unit 50, and an optical tracking structure 110. The display panel 60 includes a display area 61 and a frame area 62, the photosensitive unit 50 is located in the frame area 62, the optical tracking structure 110 includes an optical lens 111, a frame 112 for fixing the optical lens 111, and a light-passing opening 30 disposed on the frame 112, the light-passing opening 30 is used for transmitting light from different positions of the eyeball 1 to the photosensitive unit 50 for performing eyeball tracking.
The display module 100 of the embodiment of the application is advantageous to reduce the difficulty of the processing technology of the photosensitive unit 50 and the light-passing opening 30 on the first aspect by changing the position of the optical tracking structure 110 on the display module 100. In the embodiment of the present application, the photosensitive unit 50 is located in the frame region 62 of the display panel 60, and the light passing port 30 in the optical tracking structure 110 is located on the frame 112 of the optical lens. It is understood that the distance between the optical lens of the display module 100 and the display panel 60 is above millimeter level, that is, the distance between the light-passing port 30 of the optical tracking structure 110 and the photosensitive unit 50 is above millimeter level. Set up like this, be favorable to improving logical light mouth 30 and photosensitive unit 50's distance to reduce the processing technology degree of difficulty to logical light mouth 30 and photosensitive unit 50, and then be favorable to realizing accurate eyeball tracking function. Specifically, as shown in fig. 4 and referring to fig. 3, assuming that the resolution accuracy f of the eyeball 1 is 250 μm, the distance H between the eyeball and the light-transmitting opening 30 is 60mm, and the optical path, i.e., the distance L between the light-transmitting opening 30 and the photosensitive unit 50 is about 40mm, the width of the light-transmitting opening 30 and the photosensitive unit 50 is 62.5 μm by approximate calculation. Therefore, on the first hand, the processing technology difficulty of the light through port and the photosensitive unit is reduced, and the accurate eyeball tracking function is realized; in the second aspect, the alignment precision of the optical tracking structure and the photosensitive unit is favorably ensured; in the third aspect, it is also advantageous to improve the parasitic resistance on the light sensing unit, thereby advantageously ensuring the stability and performance of the light sensing unit.
In some embodiments of the present application, the display module 100 further includes an infrared light source 120, and the infrared light source 120 is used for emitting light to the eyeball 1. The infrared light source 120 emits infrared light to the eyeball 1, and after the infrared light is reflected by the eyeball 1, part of the infrared light passes through the light-passing port 30 in the optical tracking structure 110 and enters the photosensitive unit 50 in the display module 100, so as to collect reflected light from different positions of the eye to perform an eyeball tracking function.
In some embodiments of the present application, the light-passing opening 30 is filled with a material with a high refractive index for transmitting infrared light and cutting visible light. As shown in fig. 4, the infrared light is refracted after passing through the light-passing opening 30, and is transmitted to the photosensitive unit 50 through the route a, so that the light is prevented from being reflected and then directly irradiated to the outside of the photosensitive unit 50 through the route B, and therefore the photosensitive unit 50 is prevented from deviating from the display area 61 and being too large, which is beneficial to reducing the size of the frame area 62 of the display panel 60.
In some embodiments of the present disclosure, the light-sensitive units 50 are distributed around the frame region 62, and the light-passing ports 30 are one-to-one corresponding to the light-sensitive units 50. With this arrangement, the reflected light is incident on the corresponding photosensitive unit 50 through the plurality of light-passing ports 30, and the gaze point position of the eyeball 1 is determined by the superposition calculation of the light intensity on the photosensitive unit 50, which is beneficial to further improving the accuracy of the eyeball tracking function.
In other embodiments of the present application, the photosensitive units 50 are plural and distributed around the frame region 62, and the light passing opening 30 is one. Thus, the image on the eyeball 1 is projected onto the photosensitive unit 50 by the pinhole imaging principle of the light-passing port 30, and the position focused by the eyeball 1 is acquired.
Alternatively, in some other embodiments of the present application, the number of the light-sensitive units 50 is multiple and is distributed around the frame region 62, the number of the light-passing ports 30 is multiple, and the number of the light-passing ports 30 is greater than the number of the light-sensitive units 50. The arrangement is favorable for eliminating the positioning error between the position of the light through opening 30 and the position of the photosensitive unit 50 during the process.
In some embodiments of the present application, the display module 100 further includes an infrared reflector 130, and the infrared reflector 130 is used for transmitting the reflected light of the eyeball 1 to the light-passing opening 30. As shown in fig. 4, it is conceivable that the reflected light of the eyeball 1 is further reflected by providing the infrared mirror 130, which is advantageous to make the scattered light more easily enter the light admission port 30 along the route C, thereby forming an image of the eyeball 1 on the photosensitive unit 50 and acquiring the position of the eyeball 1. Meanwhile, the reflected light of the eyeball 1 is reflected by the reflector, which is beneficial to avoiding different optical paths of the reflected light due to the fact that the outer surface of the eyeball 1 is a non-plane, and further more accurate reduction and comparison can be carried out on the image of the eyeball 1 on the photosensitive unit 50. That is, since the outer surface of the eyeball 1 has a shape similar to a sphere, there is a slight difference in the distance from the photosensitive unit 50 after the light is reflected by each portion of the eyeball 1. These differences can be eliminated by providing a mirror, which is advantageous in order to avoid that these slight differences affect the imaging of the light sensitive unit 50.
As shown in fig. 5, and with reference to fig. 4, in some embodiments of the present application, the light admission port 30 comprises a plurality of equally sized and equidistant slits 31. Thus, one light passing opening 30 has a plurality of slits 31 with the same width, and the reflected light passes through the plurality of slits 31 to form collimated light and then is transmitted to the photosensitive unit 50. Collimation is the process of reducing the divergence of the beam. In this way, it is advantageous to form a more focused image of the eyeball 1 on the photosensitive unit 50, thereby further improving the accuracy of the eyeball tracking function.
As shown in fig. 6, a second aspect of the present application provides a method for manufacturing a display module 100, including:
providing a display panel, wherein the display panel comprises a display area and a frame area;
providing a photosensitive unit, wherein the photosensitive unit is positioned in the frame area;
an optical tracking structure is provided, which comprises an optical lens, a frame for fixing the optical lens, and a light-passing port arranged on the frame, wherein the light-passing port is used for transmitting light of different positions of an eyeball to a photosensitive unit for eyeball tracking.
In the display module 100 formed by the method of the embodiment of the present application, the photosensitive unit 50 is located in the frame region 62 of the display panel 60, and the light-passing opening 30 in the optical tracking structure 110 is located on the frame 112 of the optical lens. The distance between the optical lens and the display panel 60 is above millimeter level, that is, the distance between the light-passing port 30 in the optical tracking structure 110 and the photosensitive unit 50 is above millimeter level. Set up like this, be favorable to improving logical light mouth 30 and photosensitive unit 50's distance to reduce the processing technology degree of difficulty to logical light mouth 30 and photosensitive unit 50, and then be favorable to realizing accurate eyeball tracking function.
In some embodiments of the present application, the method for manufacturing the display module 100 further includes:
an infrared light source is provided for emitting light to the eye.
After the infrared light is reflected by the eyeball 1, part of the infrared light passes through the light-passing port 30 in the optical tracking structure 110 and enters the photosensitive unit 50 in the display module 100, so as to collect the reflected light of different positions of the eye for eyeball tracking.
In some embodiments of the present application, the method for manufacturing the display module 100 further includes:
an infrared reflecting mirror is provided for transmitting the light reflected by the eyeball to the light-transmitting opening.
By providing the infrared reflecting mirror 130, the infrared light reflected by the eyeball 1 is further reflected to enter the light passing opening 30 more easily, thereby forming an image of the eyeball 1 on the photosensitive unit 50 and acquiring the position of the eyeball 1. Meanwhile, the reflected light of the eyeball 1 is reflected by the infrared reflector 130, which is beneficial to avoiding different optical paths of the reflected light due to the fact that the outer surface of the eyeball 1 is a non-plane surface, and further more accurate reduction and comparison of the image of the eyeball 1 on the photosensitive unit 50 can be carried out.
The third aspect of the present application provides a head-mounted display device, which includes the display module 100 as described in the first aspect.
The head-mounted display device of the embodiment of the application is integrated with an eyeball tracking function. The head mounted display device may include a head mounted VR device and a head mounted AR device. In the display module 100, the photosensitive unit 50 is located in the frame region 62 of the display panel 60, and the light-passing opening 30 of the optical tracking structure 110 is located on the frame 112 of the optical lens. The distance between the optical lens and the display panel 60 is above millimeter level, that is, the distance between the light-passing port 30 in the optical tracking structure 110 and the photosensitive unit 50 is above millimeter level. Set up like this, be favorable to improving logical light mouth 30 and photosensitive unit 50's distance to be favorable to reducing the processing technology degree of difficulty to logical light mouth 30 and photosensitive unit 50, and then be favorable to realizing accurate eyeball tracking function.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
All the embodiments in the present specification are described in a related manner, and the same and similar parts among the embodiments may be referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the system embodiment, since it is substantially similar to the method embodiment, the description is simple, and for the relevant points, reference may be made to the partial description of the method embodiment.
The above description is only for the preferred embodiment of the present application and is not intended to limit the scope of the present application. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application are included in the protection scope of the present application.
Claims (10)
1. A display module, comprising:
the display panel comprises a display area and a frame area;
the photosensitive unit is positioned in the frame area;
the optical tracking structure comprises an optical lens, a frame used for fixing the lens and a light through port arranged on the frame, wherein the light through port is used for transmitting light of different positions of an eyeball to the photosensitive unit so as to track the eyeball.
2. The display module according to claim 1, further comprising an infrared light source for emitting light to the eyeball.
3. The display module according to claim 2, wherein the light-transmitting opening is filled with a material having a high refractive index for transmitting infrared light and blocking visible light.
4. The display module according to claim 1, wherein the photosensitive units are distributed around the frame area, and the light-passing openings are in one-to-one correspondence with the photosensitive units;
or, the photosensitive units are distributed around the frame area, and the light-passing opening is one;
or, the photosensitive units are distributed around the frame area, the light through openings are multiple, and the number of the light through openings is larger than that of the photosensitive units.
5. The display module according to claim 1, further comprising an infrared mirror for transmitting the light reflected by the eyeball to the light-transmitting opening.
6. The display module of claim 5, wherein the light-passing opening comprises a plurality of equally sized and equally spaced slits.
7. A manufacturing method of a display module is characterized by comprising the following steps:
providing a display panel, wherein the display panel comprises a display area and a frame area;
providing a photosensitive unit, wherein the photosensitive unit is positioned in the frame area;
providing an optical tracking structure, wherein the optical tracking structure comprises an optical lens, a frame for fixing the lens and a light through port arranged on the frame, and the light through port is used for transmitting light of different positions of an eyeball to the photosensitive unit for eyeball tracking.
8. The method for manufacturing a display module according to claim 7, further comprising:
providing an infrared light source for emitting light to the eyeball.
9. The method for manufacturing a display module according to claim 7, further comprising:
and providing an infrared reflecting mirror which is used for transmitting the reflected light of the eyeball to the light through opening.
10. A head-mounted display device comprising a display module according to any one of claims 1-6.
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113359292A (en) * | 2021-06-30 | 2021-09-07 | 京东方科技集团股份有限公司 | Display module, manufacturing method thereof and head-mounted display device |
| CN113509268A (en) * | 2021-05-12 | 2021-10-19 | 上海交通大学 | Calibration device and calibration method of mixed reality surgical navigation system |
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| WO2018076202A1 (en) * | 2016-10-26 | 2018-05-03 | 中国科学院深圳先进技术研究院 | Head-mounted display device that can perform eye tracking, and eye tracking method |
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| CN211454097U (en) * | 2019-11-19 | 2020-09-08 | 青岛小鸟看看科技有限公司 | Eyeball tracking device of head-mounted equipment and head-mounted equipment |
| CN111766702A (en) * | 2020-06-29 | 2020-10-13 | 京东方科技集团股份有限公司 | Near-to-eye display optical system for eyeball tracking |
| CN113509268A (en) * | 2021-05-12 | 2021-10-19 | 上海交通大学 | Calibration device and calibration method of mixed reality surgical navigation system |
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