CN212411483U - Display screen and VR glasses - Google Patents
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- CN212411483U CN212411483U CN202021580526.9U CN202021580526U CN212411483U CN 212411483 U CN212411483 U CN 212411483U CN 202021580526 U CN202021580526 U CN 202021580526U CN 212411483 U CN212411483 U CN 212411483U
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Abstract
The embodiment of the application provides a display screen, VR glasses, relates to intelligence and dresses technical field, both can satisfy the resolution ratio demand of people's eye, can avoid appearing increasing because of the quantity of pixel again, and the problem that leads to the hardware cost increase and the hardware drive degree of difficulty of display screen to increase. The display screen is provided with a display area, wherein the display area comprises a pixel dense area and a pixel sparse area; the pixel sparse area surrounds the periphery of the pixel dense area in a closed shape, and the center of the pixel sparse area and the center of the pixel dense area are both overlapped with the center of the display area; the pixel size of the pixel-dense region is smaller than the pixel size of the pixel-sparse region.
Description
Technical Field
The application relates to the technical field of intelligent wearing, concretely relates to display screen, VR glasses.
Background
Virtual Reality (VR) glasses use a head-mounted display device to seal the user from the outside, and guide the user to generate a sense of being in a Virtual environment. The principle is that the lens is used to make the picture of the display screen into an erect enlarged virtual image, and the virtual image seen by human eyes is similar to the virtual image of a large screen picture.
SUMMERY OF THE UTILITY MODEL
An object of this application is to provide a display screen, VR glasses, both can satisfy the resolution ratio demand of people's eye, can avoid appearing again because of the quantity increase of pixel, and the problem that leads to the hardware cost of display screen to increase and the hardware drive degree of difficulty to increase.
In a first aspect, an embodiment of the present application provides a display screen, which has a display area, where the display area includes a pixel-dense area and a pixel-sparse area; the pixel sparse area surrounds the periphery of the pixel dense area in a closed shape, and the center of the pixel sparse area and the center of the pixel dense area are overlapped with the center of the display area; the pixel size of the pixel-dense region is smaller than the pixel size of the pixel-sparse region.
In a second aspect, the application provides VR glasses, which comprise a VR glasses body and a display screen of the first aspect.
The embodiment of the utility model provides a display screen, VR glasses, display screen have the display area, and the display area includes that the pixel is intensive district and the sparse district of pixel. The pixel sparse area is arranged at the periphery of the pixel dense area, and the pixel size of the pixel dense area is smaller than that of the pixel sparse area, so that on one hand, the pixel size of at least the pixel dense area is reduced, the resolution is improved, and the resolution requirement of human eyes can be met; on the other hand, the size of the pixels in at least the pixel sparse area is increased, the number of the pixels in the whole display area can be reduced, and the problems that the hardware cost of the display screen is increased and the hardware driving difficulty is increased due to the increase of the number of the pixels are solved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic top view of a display screen according to an embodiment of the present application;
fig. 2 is a schematic top view of a display area according to an embodiment of the present application;
FIG. 3 is a graph of human monocular visual resolution provided in an embodiment of the present application;
fig. 4 is a diagram of a transmission path of light in VR glasses according to a first embodiment of the present application;
FIG. 5 is a pixel layout diagram according to one embodiment of the present application;
fig. 6 is a schematic structural diagram of VR glasses provided in the second embodiment of the present application.
Reference numerals:
100-VR glasses; 10-a display screen; 20-an optical lens system; 11-a display area; 111-pixel dense region; 1111 — a first pixel dense area; 1112-a second pixel-dense region; 1113-third element dense region; 112-pixel sparse region; 1121 — first pixel sparse region; 1122-second pixel sparse region; 1123-a third pixel sparse region; 101-pixels; 1011-sub-pixel.
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, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Because the picture that the user wore VR glasses and sees is the virtual image after enlargeing, if the resolution ratio of the display screen in the VR glasses is low excessively, will produce the screen window effect, promptly, the picture that the user saw is latticed, and the experience effect is extremely poor.
In order to improve the resolution of the display screen, the related art proposes: the number of pixels in a display screen of the same size can be increased. However, although the number of pixels is increased and the resolution is improved, the hardware cost and hardware driving difficulty of the display screen are also increased.
Based on this, the embodiment of the utility model provides the following scheme:
example one
There is provided a display screen 10, as shown in fig. 1 and 2, the display screen 10 having a display area 11 including a pixel-dense area 111 and a pixel-sparse area 112. The pixel sparse area 112 surrounds the pixel dense area 111 in a closed shape, and the center of the pixel sparse area 112 and the center of the pixel dense area 111 are both overlapped with the center of the display area; the pixel size of the pixel-dense region 111 is smaller than the pixel size of the pixel-sparse region 112.
In some embodiments, the size of the pixel-dense region 111, the size of the pixel-sparse region 112, the size of the pixel 101 in the pixel-dense region 111, and the size of the pixel 101 in the pixel-sparse region 112 are related to the size of the display screen 10 and the viewing angle of human eyes, which is not particularly limited in the embodiments of the present invention.
In the optical system of the human eye, the retina is used as a visual sensor, and the cell size, the light sensing capability and the resolution capability are different. The cells of the retina are divided into cone cells and rod cells, and the cone cells have high resolution power on strong light and color and the highest visual resolution power and are mainly distributed in the central position of the retina; rod cells are capable of sensing low light and are distributed almost exclusively at peripheral locations on the retina. Therefore, the requirement for the resolution of the display screen is higher within a certain visual angle of human eyes corresponding to the central position of the retina.
Based on this, the pixel dense region 111 can be divided into at least two regions, which are a first pixel dense region 1111 and a second pixel dense region 1112 enclosing the first pixel dense region 1111. On this basis, the pixel-dense region 111 may further include a third pixel-dense region 1113 enclosing the second pixel-dense region 1112. The pixel size of the first pixel-dense region 1111 is smaller than the pixel size of the second pixel-dense region 1112, and the pixel size of the second pixel-dense region 1112 is smaller than the pixel size of the third pixel-dense region 1113.
The pixel sparse region 112 may be divided into at least two regions, which are a first pixel sparse region 1121 and a second pixel sparse region 1122 surrounding the first pixel sparse region 1121 in a closed shape, respectively. On this basis, the pixel sparse region 112 may further include a third pixel sparse region 1123 that surrounds the second pixel sparse region 1122 in a closed shape. The pixel size of the first pixel-thinning region 1121 is smaller than the pixel size of the second pixel-thinning region 1122, and the pixel size of the second pixel-thinning region 1122 is smaller than the pixel size of the third pixel-thinning region 1123.
Also, the centers of the first pixel-dense region 1111, the second pixel-dense region 1112, the third pixel-dense region 1113, the first pixel-sparse region 1121, the second pixel-sparse region 1122, and the third pixel-sparse region 1123 all overlap the center of the display region 11.
From the third pixel sparse region 1123 to the first pixel dense region 1111, the sizes of the pixels in the third pixel sparse region 1123, the second pixel sparse region 1122, the first pixel sparse region 1121, the third pixel dense region 1113, the second pixel dense region 1112, the first pixel dense region 1111 are gradually reduced, and the smaller the pixel size, the larger the pixel density. Therefore, the resolution ratio of the display area 11 closer to the center can be larger, and the requirements of different areas of the retina on the resolution ratio of the picture when the human eyes look at the display screen are met.
As shown in fig. 3, the horizontal axis represents the visual range of a single eye and the vertical axis represents the human eye resolution. Where the limiting resolution of the human eye is 1', it means that the number of corresponding pixels 101 (Pixel Per depth, PPD for short) is 60 within a 1 ° viewing angle, that is, a single eye of the human can distinguish 60 pixels 101 within the 1 ° viewing angle.
The retina comprises a macula lutea in the central position, a small area in the center of the macula lutea is called macula fovea, the visual resolution is the highest, and is responsible for high-definition imaging of human vision, the corresponding human visual angles are (-2.5 degrees, 0 degrees) and [0 degrees, 2.5 degrees ], and at the monocular visual angle of 0 degrees, the requirement of the human eye on the resolution is 1', that is, the number of corresponding pixels 101 in the 1 degree visual angle is 60.
The macula is responsible for sharp imaging, corresponding to human eye viewing angles of (-10 °, -2.5 ° ] and [2.5 °, 10 °), at a monocular viewing angle of 2.5 °, the human eye's requirement for resolution drops to 0.5 of the limit resolution, i.e., the number of corresponding pixels 101 within a 1 ° viewing angle is 30.
For human eye viewing angles (-20 °, -10 ° ] and [10 °, 20 °), at a monocular viewing angle of 10 °, the human eye requirement for resolution drops to 0.2 of the limit resolution, i.e., the number of corresponding pixels 101 within a 1 ° viewing angle is 12.
For human eye viewing angles (-30 °, -20 ° ] and [20 °, 30 °), at a monocular viewing angle of 20 °, the human eye requirement for resolution is reduced to 0.133 of the limit resolution, i.e., the number of corresponding pixels 101 within a 1 ° viewing angle is 8.
For human eye viewing angles (-40 °, -30 ° ] and [30 °, 40 °), at a monocular viewing angle of 30 °, the human eye requirement for resolution drops to 0.083, which is the number of corresponding pixels 101 within a 1 ° viewing angle, of the limit resolution.
For human eye viewing angles (-50 °, -40 ° ] and [40 °, 50 °), at a monocular viewing angle of 40 °, the human eye requirement for resolution drops to 0.06 of the limit resolution, i.e., the number of corresponding pixels 101 within a 1 ° viewing angle is 3.6.
For human eye viewing angles beyond ± 50 °, at a monocular viewing angle of 50 °, the human eye's requirement for resolution drops to 0.03 of the limit resolution, i.e., the number of corresponding pixels 101 within a 1 ° viewing angle is 1.8 PPD.
The embodiment of the utility model provides a provide: the first pixel dense region 1111 may be a region corresponding to a single-eye viewing angle within 2.5 ° (binocular viewing angles are (-2.5 °, 0 ° ] and [0 °, 2.5 °)), the second pixel dense region 1112 may be a region corresponding to a single-eye viewing angle within 10 ° (binocular viewing angles are (-10 °, -2.5 ° ] and [2.5 °, 10 °)), the third pixel dense region 1113 may be a region corresponding to a single-eye viewing angle within 20 ° (binocular viewing angles are (-20 °, -10 ° ] and [10 °, 20 °), the first pixel sparse region 1121 may be a region corresponding to a single-eye viewing angle within 30 ° (binocular viewing angles are (-30 °, -20 ° ] and [20 °, 30 °), and the second pixel sparse region 1122 may be a region corresponding to a single-eye viewing angle within 40 ° (binocular viewing angles are (-40 °, -30 °, -30 ° ] and [30 °, 40 deg.), the third pixel sparse region 1123 may be a region corresponding to a range of monocular viewing angles of 50 deg. (binocular viewing angles of (-50 deg., -40 deg. ] and [40 deg., 50 deg.)).
The first pixel dense region 1111 may include X pixels 101, X ≧ (2 × 2.5 ° × 60PPD)2(ii) a Second pixel dense area 1112 includes Y pixels 101, Y ≧ (2X 10 DEG X30 PPD)2-(2*2.5°*30PPD)2(ii) a The third pixel dense region 1113 includes Z pixels 101, Z ≧ (2 × 20 ° + 12PPD)2-(2*10°*12PPD)2(ii) a The first sparse pixel region 1121 includes A pixels 101, A ≧ (2X 30 DEG X8 PPD)2-(2*20°*8PPD)2(ii) a The second sparse pixel region 1122 includes B pixels 101, B ≧ (2X 40 DEG X5 PPD)2-(2*30°*5PPD)2(ii) a The third sparse pixel area 1123 includes C pixels 101, C ≧ (2X 50 DEG X3.6 PPD)2-(2*40°*3.6PPD)2. Wherein Y is more than Z, more than A, more than B and more than C.
Here, the horizontal and vertical dimensions of each pixel 101 may be the same, so that the number of pixels 101 in the horizontal and vertical directions is the same in each of the third pixel sparse region 1122, the second pixel sparse region 1122, the first pixel sparse region 1121, the third pixel dense region 1113, the second pixel dense region 1112, and the first pixel dense region 1111.
Compared with the prior art, the pixel sizes of at least the first pixel dense area 1111, the second pixel dense area 1112 and the third pixel dense area 1113 are reduced, and the resolution is improved to meet the resolution requirement of human eyes. Compared with the prior art, the sizes of the pixels in at least the third pixel sparse region 1122, the second pixel sparse region 1122 and the first pixel sparse region 1121 are increased to reduce the number of the pixels 101 in the whole display region 11, so as to avoid the problems of increased hardware cost and hardware driving difficulty of the display screen 10 caused by increased number of the pixels 101. On this basis, the display area may further include a region located at the periphery of the pixel thinning-out area 112, and the pixel size in the region may be larger than the pixel size of the third pixel thinning-out area 1123 to reduce the number of pixels 101 in the display area.
Here, although the pixel sizes in the third pixel-thinning region 1122, the second pixel-thinning region 1122, and the first pixel-thinning region 1121 are increased and the resolution is reduced, the effect of the human eye viewing the display screen is not affected because the requirement of the human eye for the resolution in this region is reduced.
In some embodiments, when the display screen 10 is applied to VR glasses, the pixel sizes in the third pixel sparse region 1122, the second pixel sparse region 1122, the first pixel sparse region 1121, the third pixel dense region 1113, the second pixel dense region 1112, and the first pixel dense region 1111 may be determined by a real operation.
As shown in fig. 4, for example, light rays emitted from the display screen 10 pass through the optical lens system 20 of the VR glasses 100, and form an erect and enlarged virtual image on the display screen 10 side, and a picture seen by human eyes is the erect and enlarged virtual image. The total visual angle of human eyes is +/-50 degrees, and the number of the pixels 101 in the first pixel dense region 1111 is (2X 2.5 degree X60 PPD)2For example, the pixel size in the first pixel-dense region 1111 can be calculated as follows:
in the vertical direction, a normalized Y-field coordinate Hy of 2.5 °/50 °/0.05 may be obtained, and 0.05 is input into real, and the total image height on the display screen 10 corresponding to the first pixel-dense region 1111 may be obtained as 4.158mm by the value of Hy. As is known, the number of the pixels 101 in the first pixel dense region 1111 is 300 along the longitudinal direction, and the size of each pixel 101 along the longitudinal direction can be 4.158/300 ═ 13.9 μm. Therefore, the horizontal and vertical sizes of the pixels 101 in the first pixel-dense region 1111 may each be less than or equal to 13.9 μm. Optionally, the horizontal and vertical dimensions of the pixels of the first pixel dense region are 4.5 μm when the process conditions allow.
In the above manner, the Y-field coordinate Hy corresponding to 29.5 °/50 ° -0.59 and the Y-field coordinate Hy corresponding to 30 °/50 ° -0.6 can be obtained, 0.6 is input into real, and the result is obtained by HThe value of y may result in an image height of 25.395mm on the display screen 10 at 29.5 deg. and 25.850mm on the display screen 10 at 30 deg.. 29.5 ° differs from 30 ° by 0.5 °, the image height differs by 0.454mm, and 29.5 ° and 30 ° are in the first pixel thinning-out section 1021. The number of pixels 101 in the first pixel sparse region 1021 is (2 × 30 ° × 8PPD)2-(2*20°*8PPD)2For example, 128000 indicates that the number of the pixels 101 in the first pixel thinning-out section 1021 in the range of 1 ° is 8, and the number of the pixels 101 in the first pixel thinning-out section 1021 in the range of 0.5 ° is 4, and it is found that the size of each pixel 101 in the vertical direction may be 113.5 μm or 0.908/8. Therefore, the horizontal and vertical sizes of the pixels 101 in the first pixel sparse region 1021 may each be less than or equal to 113.5 μm.
The normalized view field comprises an X view field coordinate Hx and a Y view field coordinate Hy, and the value ranges of the Hx and the Hy are-1. In the longitudinal direction, when a maximum half field of view of a system is 50 °, if a half field of view of 30 ° needs to be defined, the coordinates (Hx, Hy) of the field of view may be defined as (0, 0.6), and 0.6 as 30 °/50 °.
On the basis, a pupil can be further defined, the normalized pupil comprises an X pupil coordinate Px and a Y pupil coordinate Py, and the value ranges of the Px and Py are-1. In the vertical direction, the maximum pupil coordinate of the corresponding field of view may be defined as (Px, Py) ═ 0, 1, and thus, the maximum pupil coordinate of the half field of view of 30 ° may be defined as (Hx, Hy, Px, Py) ═ 0, 0.6, 0, 1.
In some embodiments, the sizes of the plurality of pixels 101 in the first pixel-dense region 1111 may be the same, the sizes of the plurality of pixels 101 in the second pixel-dense region 1112 may be the same, the sizes of the plurality of pixels 101 in the third pixel-dense region 1112 may be the same, and the sizes of the plurality of pixels 101 in the third pixel-dense region 1113 may be the same; the sizes of the plurality of pixels 101 in the first pixel-thinning region 1121 may be the same, the sizes of the plurality of pixels 101 in the second pixel-thinning region 1122 may be the same, and the sizes of the plurality of pixels 101 in the third pixel-thinning region 1123 may be the same.
In some embodiments, as shown in fig. 5, each pixel 101 may include three or four sub-pixels 1011. If each pixel 101 includes three sub-pixels 101, the three sub-pixels 1011 can be a red sub-pixel, a green sub-pixel, and a blue sub-pixel; or the three sub-pixels 1011 may be a magenta sub-pixel, a cyan sub-pixel, and a yellow sub-pixel, respectively. If each pixel 101 includes four sub-pixels 101, the four sub-pixels 1011 can be a red sub-pixel, a green sub-pixel, a blue sub-pixel, and a white sub-pixel; alternatively, the four sub-pixels 1011 may be a magenta sub-pixel, a cyan sub-pixel, a yellow sub-pixel, and a white sub-pixel, respectively.
In some embodiments, the display screen 10 may be an organic Light-emitting Diode (OLED) display screen, a quantum Dot Light emitting Diodes (QLED) display screen, a liquid crystal display screen, or the like.
In some embodiments, the display screen 10 may be a bezel-less display screen; alternatively, the display screen 10 may be a framed or narrow-framed display screen. In the case that the display panel 10 is a framed or narrow-framed display panel, the display panel further has a peripheral region 12 located at the periphery of the display region 11, and the peripheral region 12 is located on at least one side of the display region 11.
The embodiment of the utility model provides a display screen 10, display screen 10 have display area 11, and display area 11 includes pixel intensive district 111 and pixel sparse district 112. When the display screen 10 is applied to a device having a high resolution requirement on the central area of the display area 11 and a low resolution requirement on the non-central area of the display area 11, the pixel sparse area 112 is arranged at the periphery of the pixel dense area 111, and the pixel size of the pixel dense area 111 is smaller than that of the pixel sparse area 112, so that on one hand, the pixel size of at least the pixel dense area 111 is reduced, the resolution is improved, and the resolution requirement of human eyes can be met; on the other hand, the size of the pixels in at least the pixel thinning-out region 112 is increased, so that the number of pixels 101 in the entire display region 11 can be reduced, and the problems of increased hardware cost and hardware driving difficulty of the display screen 10 due to the increased number of pixels 101 can be avoided.
Example two
The embodiment of the utility model provides a still provide a frame VR glasses 100, as shown in fig. 6, VR glasses 100 include VR glasses body and embodiment one display screen 10. The VR glasses body may include an optical lens system 20, and the optical lens system 20 may include at least two lenses, which correspond to the left and right eyes, respectively.
In some embodiments, VR glasses 100 may be an external headset, a mobile head display, and an integral head display.
The embodiment of the utility model provides a VR glasses 100, VR glasses 100 include VR glasses body and embodiment one display screen 10. The pixel sparse area 112 is arranged at the periphery of the pixel dense area 111, and the pixel size of the pixel dense area 111 is smaller than that of the pixel sparse area 112, so that on one hand, the pixel size of at least the pixel dense area 111 is reduced, the resolution is improved, and the resolution requirement of human eyes can be met; on the other hand, the size of the pixels in at least the pixel thinning-out region 112 is increased, so that the number of pixels 101 in the entire display region 11 can be reduced, and the problems of increased hardware cost and hardware driving difficulty of the display screen 10 due to the increased number of pixels 101 can be avoided.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (9)
1. A display screen is provided with a display area, and is characterized in that the display area comprises a pixel-dense area and a pixel-sparse area; the pixel sparse area surrounds the periphery of the pixel dense area in a closed shape, and the center of the pixel sparse area and the center of the pixel dense area are both overlapped with the center of the display area;
the pixel size of the pixel-dense region is smaller than the pixel size of the pixel-sparse region.
2. A display screen in accordance with claim 1, wherein the pixel-dense region comprises at least a first pixel-dense region and a second pixel-dense region that surrounds the first pixel-dense region in a closed shape, and/or the pixel-sparse region comprises at least a first pixel-sparse region and a second pixel-sparse region that surrounds the first pixel-sparse region in a closed shape.
3. A display screen according to claim 2, wherein the pixel-dense region further comprises a third pixel-dense region which surrounds the second pixel-dense region in a closed manner, the first pixel-dense region having a pixel size smaller than that of the second pixel-dense region, the second pixel-dense region having a pixel size smaller than that of the third pixel-dense region;
and/or the pixel sparse region further comprises a third pixel sparse region surrounding the second pixel sparse region in a closed shape, the pixel size of the first pixel sparse region is smaller than that of the second pixel sparse region, and the pixel size of the second pixel sparse region is smaller than that of the third pixel sparse region;
wherein centers of the first pixel-dense region, the second pixel-dense region, the third pixel-dense region, the first pixel-sparse region, the second pixel-sparse region, and the third pixel-sparse region all overlap with a center of the display region.
4. Display screen according to claim 3,
the first pixel dense region comprises X pixels, wherein X is not less than (2X 2.5 degree 60PPD)2；
The second pixel dense region comprises Y pixels, and Y is not less than (2X 10 DEG X30 PPD)2-(2*2.5°*30PPD)2；
The third pixel dense region comprises Z pixels, Z ≧ (2 ≧ 20 °/12 PPD)2-(2*10°*12PPD)2；
The first sparse pixel region includes A pixels, A ≧ (2 ≧ 30 °/8 PPD)2-(2*20°*8PPD)2；
The second sparse pixel region includes B pixels, B ≧ (2 × 40 ° × 5PPD)2-(2*30°*5PPD)2；
The third sparse pixel region comprises C pixels, wherein C is not less than (2X 50 DEG X3.6 PPD)2-(2*40°*3.6PPD)2；
Wherein PPD represents the number of pixels corresponding to an internal view angle of 1 degree, and Y is more than Z is more than A is more than B is more than C.
5. A display screen according to claim 4, wherein the pixels of the first pixel-dense region each have a lateral and longitudinal dimension less than or equal to 13.9 μm.
6. A display screen as recited in claim 5, wherein the pixels of the first pixel-dense region have a lateral and longitudinal dimension of 4.5 μm.
7. VR glasses comprising a VR glasses body and a display screen of any of claims 1-6.
8. The VR glasses of claim 7, wherein the VR glasses body includes an optical lens system that includes at least two lenses.
9. The VR glasses of claim 7 or 8 wherein the VR glasses are an external headset, a mobile head display, and an integral head display.
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