CN113311523B - Diffraction suppressing optical member and diffraction suppressing display panel - Google Patents

Diffraction suppressing optical member and diffraction suppressing display panel Download PDF

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CN113311523B
CN113311523B CN202110701977.6A CN202110701977A CN113311523B CN 113311523 B CN113311523 B CN 113311523B CN 202110701977 A CN202110701977 A CN 202110701977A CN 113311523 B CN113311523 B CN 113311523B
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light
diffraction
display screen
region
transparent electrode
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CN113311523A (en
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范真涛
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Jiaxing Uphoton Optoelectronics Technology Co Ltd
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Jiaxing Uphoton Optoelectronics Technology Co Ltd
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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/30—Polarising elements
    • G02B5/3083—Birefringent or phase retarding elements
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements

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  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
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  • Theoretical Computer Science (AREA)
  • Electroluminescent Light Sources (AREA)
  • Diffracting Gratings Or Hologram Optical Elements (AREA)

Abstract

A diffraction suppressing optical member and a diffraction suppressing display screen are disclosed, wherein a first region and a second region are formed, the first region being substantially matched with a predetermined pattern of transparent electrodes of the display screen, and a light-transmitting region and a light-opaque region are formed in the second region, the light-opaque region being dot-like regions randomly distributed in the light-transmitting region, an area ratio of the light-opaque region in the second region being selected so that a light transmittance of the first region is greater than a light transmittance of the second region to compensate for absorption of light by the transparent electrodes of the transparent display screen, thereby suppressing diffraction effects due to periodic arrangement of the transparent electrodes.

Description

Diffraction suppressing optical member and diffraction suppressing display panel
Technical Field
The present invention relates generally to display technology, and more particularly to diffraction-suppressed display screens and diffraction-suppressing optical components useful for transparent display screens.
Background
The development of the current transparent display screen enables various optical technologies combined under the screen to be applied, including, for example, an under-screen camera, an under-screen fingerprint identification, an under-screen face recognition module and the like. The application of these under-screen technologies in turn places further demands on transparent displays, one of which is the reduction of the diffraction effects of transparent displays. In particular, periodically arranged structures in the display screen may form starburst effects due to diffraction effects under light illumination, thereby affecting the quality of the imaged and/or projected light field
Therefore, development of a new display screen diffraction suppression technique is desired.
Disclosure of Invention
The present invention aims to provide a diffraction suppressing optical member and a diffraction suppressing display panel, which can contribute to suppressing the diffraction effect of the display panel.
According to an aspect of the present invention, there is provided a diffraction suppressing optical member for eliminating diffraction effects of transparent electrodes in a display screen, the transparent electrodes forming a predetermined pattern, wherein the diffraction suppressing optical member is formed as a sheet member including a first region substantially matching the predetermined pattern and a second region complementary to the first region, and the sheet member is formed with light transmitting regions and light-impermeable regions in the second region, the light-impermeable regions being dot-like regions randomly distributed in the light transmitting regions, and an area ratio of the light-impermeable regions in the second region being selected so that a light transmittance of the first region is larger than a light transmittance of the second region to compensate for absorption of light by the transparent electrodes of the transparent display screen.
Preferably, the percentage of the area of the opaque region in the second region is substantially equal to the light transmittance of the transparent electrode of the display screen.
Advantageously, the sheet may comprise an amplitude compensation layer forming the light-transmitting and light-impermeable areas.
In some embodiments, the sheet may include a base layer, and the amplitude compensation layer is formed on the base layer.
In some embodiments, the amplitude compensation layer may be formed by spraying a light shielding material on the base layer.
Advantageously, the sheet may comprise a phase compensation layer configured such that the first region is subject to a first phase change induced by light passing therethrough
Figure BDA0003130407140000021
Second phase change introduced to light transmitted through the second region +.>
Figure BDA0003130407140000022
With a predetermined phase difference->
Figure BDA0003130407140000023
To compensate for phase changes introduced by the transparent electrode pairs of the display screen to light passing therethrough>
Figure BDA0003130407140000024
Preferably, the predetermined phase difference
Figure BDA0003130407140000025
Phase change introduced with transparent electrode>
Figure BDA0003130407140000026
The method meets the following conditions:
Figure BDA0003130407140000027
n is an integer, & lt + & gt>
Figure BDA0003130407140000028
Figure BDA0003130407140000029
m is an integer, & lt + & gt>
Figure BDA00031304071400000210
And +.>
Figure BDA00031304071400000211
Preferably, the predetermined phase difference
Figure BDA00031304071400000212
Phase change introduced with transparent electrode>
Figure BDA00031304071400000213
The method meets the following conditions: />
Figure BDA00031304071400000214
n is an integer.
Advantageously, the sheet may be formed with a plurality of gradation areas having gradation gradually decreasing from positions corresponding to the light emitting pixels of the display screen to the surroundings.
Preferably, the gradation region includes shading points which are randomly distributed, and the distribution density of the shading points gradually decreases from a position corresponding to a light emitting pixel of the display screen to the periphery.
Advantageously, the sheet may be formed with a plurality of light-shielding regions including a plurality of light-impermeable burrs extending from positions corresponding to the light-emitting pixels of the display screen to the surroundings, the burrs having randomly arranged positions or random lengths.
According to another aspect of the present invention, there is provided a diffraction-suppressed display screen including a display screen and a diffraction-suppressing optical member as described above. The display screen allows light to pass therethrough, and includes light emitting pixels and a transparent electrode layer for supplying power to the light emitting pixels, the transparent electrode layer including transparent electrodes forming a predetermined pattern. The diffraction suppressing optical member is disposed such that a first region of the sheet is aligned with the predetermined pattern formed by the transparent electrode of the display screen.
In some embodiments, the display screen has a display face for display, and the diffraction-suppressing optical component is attached to a side of the display screen opposite the display face.
In other embodiments, the diffraction suppressing optical component is disposed inside the display screen.
According to another aspect of the present invention, there is provided a diffraction-suppressed display screen comprising light-emitting pixels and a transparent electrode layer for supplying power to the light-emitting pixels, the transparent electrode layer including transparent electrodes forming a predetermined pattern, wherein the diffraction-suppressed display screen further comprises an amplitude compensation layer configured to form a first region having a predetermined pattern substantially matching the transparent electrodes and aligned with the predetermined pattern and a second region complementary to the first region, and the amplitude compensation layer is formed with light-transmitting regions and light-opaque regions in the second region, the light-opaque regions being dot-like regions randomly distributed in the light-transmitting regions, an area ratio occupied by the light-opaque regions in the second region being selected so that the light transmittance of the first region is larger than that of the second region to compensate for absorption of light by the transparent electrodes of the transparent display screen.
Preferably, the percentage of the area of the opaque region in the second region is substantially equal to the light transmittance of the transparent electrode.
The amplitude compensation layer may be formed of a light shielding material.
Advantageously, the diffraction-suppressed display screen may further include a phase compensation layer configured such that the first region introduces a first phase change to light transmitted therethrough
Figure BDA0003130407140000031
Second phase change introduced to light transmitted through the second region +.>
Figure BDA0003130407140000032
With a predetermined phase difference->
Figure BDA0003130407140000033
To compensate for phase changes introduced by the transparent electrode pairs of the display screen to light passing therethrough>
Figure BDA0003130407140000034
Preferably, the predetermined phase difference
Figure BDA0003130407140000035
Phase change introduced with transparent electrode>
Figure BDA0003130407140000036
The method meets the following conditions:
Figure BDA0003130407140000037
n is an integer, & lt + & gt>
Figure BDA0003130407140000038
Figure BDA0003130407140000039
m is an integer, & lt + & gt>
Figure BDA00031304071400000310
and
Figure BDA00031304071400000311
/>
Preferably, the predetermined phase difference
Figure BDA00031304071400000312
Phase change introduced with transparent electrode>
Figure BDA00031304071400000313
The method meets the following conditions: />
Figure BDA00031304071400000314
n is an integer.
Advantageously, the diffraction-suppressed display screen may further include a plurality of gradation regions having gradation gradually decreasing from a position corresponding to the light emitting pixels to the surroundings.
Preferably, the gradation region includes shading points that are randomly distributed, and the distribution density of the shading points gradually decreases from a position corresponding to the light emitting pixels to the surroundings.
Advantageously, the diffraction-suppressing display screen may further include a plurality of light-shielding regions including a plurality of light-impermeable burrs extending from positions corresponding to the light-emitting pixels to the surroundings, the burrs having positions arranged at random or lengths at random.
The diffraction suppressing optical member and the diffraction suppressing display screen according to the embodiments of the present invention are designed to compensate for the influence of light transmittance caused by the transparent electrodes in the display screen, thereby suppressing the diffraction effect caused by the periodic arrangement of the transparent electrodes.
Drawings
Other features, objects and advantages of the present invention will become more apparent upon reading of the detailed description of non-limiting embodiments, made with reference to the following drawings in which:
FIG. 1 is a schematic diagram of a diffraction-suppressed display screen, according to an embodiment of the present invention;
fig. 2 schematically shows the distribution of pixels and transparent electrodes in a display screen;
FIG. 3 schematically illustrates transparent electrodes and patterns formed thereby in a display screen;
FIG. 4 is a schematic plan view of a diffraction suppressing optical member according to a first embodiment of the present invention;
FIG. 5 is a schematic cross-sectional view of an example of the structure of the diffraction suppressing optical member shown in FIG. 4;
FIG. 6 is a schematic plan view of a diffraction suppressing optical member according to a second embodiment of the present invention;
FIGS. 7, 8 and 9 are schematic cross-sectional views showing examples of different structures of the diffractive optical element shown in FIG. 6;
FIG. 10 is a schematic plan view of a diffraction suppressing optical member according to a third embodiment of the present invention;
FIG. 11 is a schematic plan view of a diffraction suppressing optical member according to a fourth embodiment of the present invention;
FIG. 12 is a schematic plan view of a diffraction suppressing optical member according to a fifth embodiment of the present invention;
FIG. 13 is a schematic plan view of a diffraction suppressing optical member according to a sixth embodiment of the present invention;
FIG. 14 is a schematic view of a diffraction-suppressed display screen, in accordance with other embodiments of the present invention;
fig. 15, 16, 17, and 18 schematically illustrate a phase compensation layer, an amplitude compensation layer, a gradation region, and a light shielding region including burrs, respectively, which can be incorporated in the diffraction-suppressed display screen shown in fig. 14.
Detailed Description
The invention is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be noted that, for convenience of description, only the portions related to the invention are shown in the drawings.
It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The invention will be described in detail below with reference to the drawings in connection with embodiments.
Fig. 1 schematically illustrates a diffraction-suppressed display screen 100 according to an embodiment of the present invention. As shown in fig. 1, the diffraction-suppressing display screen 100 includes a display screen 10 and a diffraction-suppressing optical member 20. The display screen 10 has a display surface 10a for display. Preferably, the diffractive optical element 20 is arranged to be attached to the display screen 10 on the side opposite to the display surface 10a. Although the diffractive optical element 20 is shown as covering substantially the entire side of the display screen 10, the diffractive optical element 20 may cover only a portion of the display screen 10, such as only the portion corresponding to an off-screen camera, as desired for a particular application.
Fig. 2 and 3 schematically show the distribution of pixels and transparent electrodes in the display screen 10 and the predetermined pattern formed by the transparent electrodes. According to an embodiment of the present invention, the display 10 allows light to pass therethrough, constituting a transparent display. As shown in fig. 2, the display screen 10 includes light emitting pixels 11 and a transparent electrode layer 12 for supplying power to the light emitting pixels 11. As shown in fig. 3, the transparent electrode layer 12 includes a transparent electrode 12a, and the transparent electrode 12a forms a predetermined pattern PA.
The diffraction suppressing optical member 20 is for suppressing the diffraction effect of the transparent electrode 12a in the display panel 10. The diffraction suppressing optical member 20 will be described in detail below in connection with various embodiments with reference to the drawings.
Fig. 4 is a schematic plan view of a diffraction suppressing optical element 120 according to a first embodiment of the present invention, and the diffraction suppressing optical element 120 may be used in the diffraction suppressing display screen 100 shown in fig. 1.
The diffraction suppressing optical member 120 is formed as a sheet member including, as shown in fig. 4, a first region 120a and a second region 120b, wherein the first region 120a substantially matches the predetermined pattern PA of the transparent electrode 12a, and the second region 120b is complementary to the first region 120 a. It should be appreciated that depending on the location and size of the area of the display screen 10 covered by the diffraction suppressing optical component 120, the first area 120a may only be partially matched to the predetermined pattern PA of the transparent electrode 12 a.
In the diffraction suppressing display screen 100 according to the embodiment of the present invention, the diffraction suppressing optical member 20/120 is disposed such that the first region 120a of the sheet is aligned with the predetermined pattern PA formed by the transparent electrode 12a of the display screen 10.
According to an embodiment of the present invention, the diffraction suppressing optical member 120 is formed with a light-transmitting region and a light-opaque region in the second region 120b, the light-opaque region being dot-like regions (see black dots in fig. 4) randomly distributed in the light-transmitting region, and the area ratio of the light-opaque region in the second region 120b is selected so that the light transmittance of the first region 120a is greater than the light transmittance of the second region 120b to compensate for the absorption of light by the transparent electrode 12a of the transparent display screen. The diffraction suppressing optical member 120 may include an amplitude compensation layer 121 to form the above-described light-transmitting region and light-opaque region.
Preferably, the percentage of the area of the opaque region in the second region 120b is substantially equal to the light transmittance of the transparent electrode 12a of the display screen 10.
Fig. 5 is a schematic cross-sectional view of a structural example of the diffraction suppressing optical member 120 shown in fig. 4. In the example shown in fig. 5, the diffraction suppressing optical member 120 may include a base layer 122, and an amplitude compensation layer 121 is formed on the base layer 122. By way of example only and not limitation, the amplitude compensation layer 121 may be formed by spraying a light shielding material on the base layer 121.
It should be understood that although the amplitude compensation layer is shown in fig. 5 and fig. 7-9, which will be described below, as having a continuous layer structure, it should be understood that in some cases the amplitude compensation layer may have a continuous layer structure, and in other cases the amplitude compensation layer may be formed of discrete structures that form the opaque region.
Next, a diffraction suppressing optical member 220 according to a second embodiment of the present invention is described with reference to fig. 6 to 9. Fig. 6 is a schematic plan view of the diffraction suppressing optical member 220, and fig. 7 to 9 schematically show cross-sectional views of different structural examples of the diffraction optical member 220.
In the diffraction suppressing optical member 220 according to the second embodiment, a light-transmitting region and a light-opaque region are formed in the second region 220b, the light-opaque region is a dot-like region (see black dots in fig. 6) randomly distributed in the light-transmitting region, and the area ratio of the light-opaque region in the second region 220b is selected so that the light transmittance of the first region 220a is larger than the light transmittance of the second region 220b to compensate for the absorption of light by the transparent electrode 12a of the transparent display screen. The diffraction suppressing optical member 220 is identical to the diffraction suppressing optical member 120 according to the first embodiment in this respect, and is not described here again.
Unlike the diffraction suppressing optical member 120, the sheet member of the diffraction suppressing optical member 220 further includes a phase compensation layer 223 (see fig. 7, 8 and 9), the phase compensation layer 223 being configured such that the first region 220a introduces a first phase change to light passing therethrough
Figure BDA0003130407140000061
Second phase change introduced to light transmitted therethrough with second region 220b>
Figure BDA0003130407140000062
With a predetermined phase difference->
Figure BDA0003130407140000063
To compensate for the phase change introduced by the transparent electrode 12a of the display screen 10 to the light transmitted therethrough>
Figure BDA0003130407140000064
Advantageously, the predetermined phase difference introduced by the phase compensation layer 223
Figure BDA0003130407140000065
Phase change introduced with transparent electrode 12a
Figure BDA0003130407140000071
The method meets the following conditions:
Figure BDA0003130407140000072
n is an integer, & lt + & gt>
Figure BDA0003130407140000073
Figure BDA0003130407140000074
m is an integer, & lt + & gt>
Figure BDA0003130407140000075
and
Figure BDA0003130407140000076
Preferably, the predetermined phase difference introduced by the phase compensation layer 223
Figure BDA0003130407140000077
Phase change introduced with transparent electrode 12a
Figure BDA0003130407140000078
The method meets the following conditions: />
Figure BDA0003130407140000079
n is an integer.
In the example shown in fig. 7, the phase compensation layer 223 of the diffraction suppressing optical member 220A is formed in both the first region 220A and the second region 220b, and has a larger thickness in the first region 220A; the amplitude compensation layer 221 is formed on the phase compensation layer 223 of the second region 220 b. However, it should be understood that the illustration of fig. 7 is merely exemplary, and the phase compensation layer 223 may be formed to have a greater thickness in the second region 220 b.
In the example shown in fig. 8, the diffraction suppressing optical member 220B includes a base layer 222, a phase compensation layer 223 is formed on the base layer 222 and located in the first region 120a, and an amplitude compensation layer 221 is formed on the base layer 222 of the second region 220B.
In the example shown in fig. 9, the diffraction suppressing optical member 220C includes a base layer 222, a phase compensation layer 223 is formed on the base layer 222 and located in the second region 220b, and an amplitude compensation layer 221 is formed on the phase compensation layer 223 of the second region 220 b.
Although the amplitude compensation layer 221 is shown as being overlaid on top of the phase compensation layer 221 or the base layer 222, the present invention is not limited thereto. For example, the amplitude compensation layer 223 may be formed on opposite sides of the base layer 222 from the phase compensation layer 221, respectively.
The above is a schematic illustration of different structural examples of the diffraction suppressing optical member 220 according to the second embodiment of the present invention for the purpose of example only. It should be understood that the invention is not limited to any particular configuration shown in the drawings and described in connection with these drawings.
Fig. 10 and 11 show schematic plan views of diffraction suppressing optical members according to third and fourth embodiments of the present invention, respectively, in which a sheet of the diffraction suppressing optical member is formed with a plurality of gradation areas. The following will describe in detail with reference to fig. 10 and 11.
The diffraction suppressing optical member 320 according to the third embodiment shown in fig. 10 is substantially the same as the diffraction suppressing optical member 120 according to the first embodiment, except that the sheet member of the diffraction suppressing optical member 320 is further formed with a plurality of gradation areas 324, the gradation areas 324 having gradation gradually decreasing from the positions corresponding to the light emitting pixels 11 of the display screen 10 to the surroundings. When the diffraction suppressing optical member 320 is combined with the display panel 10, the diffraction effect of the original relatively regular, sharp edges of the light-emitting pixels 11 (light-shielding regions) of the display panel 10 can be destroyed by the plurality of gradation regions 324, thereby further suppressing the diffraction effect of the display panel 10 on the light transmitted therethrough.
Preferably, as shown in fig. 10, the gradation region 324 includes shading points that are randomly distributed, and the distribution density of the shading points gradually decreases from the position corresponding to the light emitting pixels 11 of the display screen 10 to the surroundings.
The diffraction suppressing optical member 420 according to the fourth embodiment shown in fig. 11 is substantially the same as the diffraction suppressing optical member 220 according to the second embodiment, except that the sheet member of the diffraction suppressing optical member 420 is further formed with a plurality of gradation areas 424, the gradation areas 424 having gradation gradually decreasing from positions corresponding to the light emitting pixels 11 of the display screen 10 to the surroundings. When the diffraction suppressing optical member 420 is combined with the display panel 10, the diffraction effect of the original relatively regular, sharp edges of the light-emitting pixels 11 (light-shielding regions) of the display panel 10 can be broken by the plurality of gradation regions 424, thereby further suppressing the diffraction effect of the display panel 10 on the light transmitted therethrough.
Preferably, as shown in fig. 11, the gradation region 424 includes shading points that are randomly distributed, and the distribution density of the shading points gradually decreases from the position corresponding to the light emitting pixels 11 of the display screen 10 to the surroundings.
It should be understood that although the gradation areas 324, 424 are shown as being light-shielded at the center in fig. 10 and 11, they may be formed to be light-transmissive at the center in other cases as long as gradation can be formed gradually decreasing from the edge of the light-emitting pixel 11 to the periphery.
Fig. 12 and 13 show schematic plan views of diffraction suppressing optical members according to a fifth embodiment and a sixth embodiment of the present invention, respectively, in which a sheet member of the diffraction suppressing optical member is formed with a plurality of light shielding regions.
The diffraction suppressing optical member 520 according to the fifth embodiment shown in fig. 12 is substantially the same as the diffraction suppressing optical member 120 according to the first embodiment, except that the sheet member of the diffraction suppressing optical member 520 is formed with a plurality of light shielding regions 525, the light shielding regions 525 include a plurality of light-impermeable burrs extending from positions corresponding to the light emitting pixels 11 of the display screen 10 to the surroundings, and the burrs have positions arranged at random or lengths at random.
Similarly, the diffraction suppressing optical member 620 according to the sixth embodiment shown in fig. 13 is substantially the same as the diffraction suppressing optical member 220 according to the first embodiment, except that the sheet member of the diffraction suppressing optical member 620 is formed with a plurality of light shielding regions 625, the light shielding regions 625 include a plurality of light-impermeable burrs extending from positions corresponding to the light emitting pixels 11 of the display screen 10 to the surroundings, and the burrs have randomly arranged positions or random lengths.
When the diffraction suppressing optical members 520, 620 are combined with the display screen 10, the diffraction effect of the original relatively regular, sharp edges of the light-emitting pixels 11 (light-shielding regions) of the display screen 10 can be destroyed by the plurality of gradation areas 525, 625, thereby further suppressing the diffraction effect of the display screen 10 on the light transmitted therethrough.
It should be understood that, in the present application, the sheet formed by the diffraction suppressing optical member is not limited to a single member, but may include a plurality of members in a sheet shape; accordingly, the various features described above in connection with the various embodiments of the invention, as well as others that can be incorporated into embodiments according to the invention, including but not limited to phase compensation layers, amplitude compensation layers, gray scale regions, light blocking regions including random burrs, can be formed on a single sheet member or on different sheet members used in combination, as desired. The invention is not limited in this respect.
A diffraction suppressing display screen 100 according to an embodiment of the present invention obtained by disposing the diffraction suppressing optical member 20 on the display screen 10 side is described above with reference to fig. 1. However, the diffraction-suppressed display screen according to the embodiment of the present invention is not limited to this implementation. For example, as shown in fig. 14, in the diffraction suppressing display screen 100 'according to other embodiments, the diffraction suppressing optical member 20 may be provided/incorporated inside the display screen 10'.
Instead of providing the diffraction suppressing optical member 20 formed separately in the display panel 10', in the diffraction suppressing display panel 100' shown in fig. 14, the display panel 10' may directly include the amplitude compensation layer 21. As shown in fig. 15, the amplitude compensation layer 21 is configured to form a first region 21a and a second region 21b, as in, for example, the amplitude compensation layer 121 in the diffraction suppressing optical member 120 according to the first embodiment of the present invention, the first region 21a being substantially matched with and aligned with a predetermined pattern PA (see fig. 2) of the transparent electrode 12a (see fig. 1) in the display panel 10'. According to an embodiment of the present invention, the amplitude compensation layer 21 is formed with a light-transmitting region and a light-opaque region in the second region 21b, the light-opaque region being dot-like regions (see black dots in fig. 15) randomly distributed in the light-transmitting region, and the area ratio of the light-opaque region in the second region 21b is selected so that the light transmittance of the first region 21a is greater than the light transmittance of the second region 21b to compensate for the absorption of light by the transparent electrode 12a of the transparent display screen.
Preferably, the percentage of the area of the opaque region in the second region 21b is substantially equal to the light transmittance of the transparent electrode 12a of the display screen 10.
Preferably, the amplitude compensation layer 21 is formed of a light shielding material, for example, by spraying or deposition.
The diffraction-suppressed display screen 100' may further include a phase compensation layer 23, according to an embodiment of the present invention. Fig. 16 only schematically shows that the phase compensation layer 23 introduces different phase changes to the light transmitted therethrough in the first region 21a and the second region 21 b. Specifically, the phase compensation layer 23 is configured such that the first region 21a introduces a first phase change to the light transmitted therethrough
Figure BDA0003130407140000101
Second phase change introduced to the light transmitted through the second region 21b +.>
Figure BDA0003130407140000102
With a predetermined phase difference therebetween
Figure BDA0003130407140000103
To compensate for phase changes introduced by the transparent electrode 12a of the display screen 10' to light transmitted through the transparent electrode 12a
Figure BDA0003130407140000104
Advantageously, the predetermined phase difference introduced by the phase compensation layer 23
Figure BDA0003130407140000105
Phase change introduced with transparent electrode 12a
Figure BDA0003130407140000106
The method meets the following conditions:
Figure BDA0003130407140000107
n is an integer, & lt + & gt>
Figure BDA0003130407140000108
Figure BDA0003130407140000109
m is an integer, & lt + & gt>
Figure BDA00031304071400001010
and
Figure BDA00031304071400001011
Preferably, the phase compensation layer 23 introduces a predetermined phase difference
Figure BDA00031304071400001012
Phase variation introduced with transparent electrode 12a>
Figure BDA00031304071400001013
The method meets the following conditions: />
Figure BDA00031304071400001014
n is an integer.
Alternatively or additionally, the diffraction-suppressed display screen 100' shown in fig. 14 may include a plurality of gradation regions 24 as shown in fig. 17. The plurality of gradation areas 24 have gradation gradually decreasing from the position corresponding to the light emitting pixels 11 (see fig. 2) to the surroundings. Preferably, as shown in fig. 17, the gradation region 24 includes shading points that are randomly distributed, and the distribution density of the shading points gradually decreases from the position corresponding to the light emitting pixels 12a to the surroundings.
Alternatively or additionally, the diffraction-suppressed display screen 100' shown in fig. 14 may include a plurality of light-shielding regions 25 as shown in fig. 18. As shown in fig. 18, the light shielding region 25 includes a plurality of light-impermeable burrs extending from positions corresponding to the light emitting pixels 12a (see fig. 2) to the surroundings, the burrs having randomly arranged positions or random lengths.
The foregoing description is only of the preferred embodiments of the present application and is presented as a description of the principles of the technology being utilized. It will be appreciated by persons skilled in the art that the scope of the invention referred to in this application is not limited to the specific combinations of features described above, but it is intended to cover other embodiments in which any combination of features described above or equivalents thereof is possible without departing from the spirit of the invention. Such as the above-described features and technical features having similar functions (but not limited to) disclosed in the present application are replaced with each other.

Claims (29)

1. A diffraction suppressing optical member for eliminating diffraction effects of a transparent electrode in a display screen, the transparent electrode forming a predetermined pattern, wherein the diffraction suppressing optical member is formed as a sheet member including a first region substantially matching the predetermined pattern and a second region complementary to the first region, and the sheet member is formed with light transmitting regions and light-impermeable regions in the second region, the light-impermeable regions being dot-like regions randomly distributed in the light transmitting regions for suppressing diffraction effects caused by periodic arrangement of the transparent electrode, an area ratio occupied by the light-impermeable regions in the second region being selected so that a light transmittance of the first region is larger than a light transmittance of the second region to compensate for absorption of light by the transparent electrode of the transparent display screen.
2. The diffraction-suppressing optical component as claimed in claim 1, wherein the opaque region comprises an area percentage in the second region that is substantially equal to the light transmittance of the transparent electrode of the display screen.
3. The diffraction-suppressing optical component as claimed in claim 1 or 2, wherein the sheet member includes an amplitude compensation layer that forms the light-transmitting region and the light-opaque region.
4. A diffraction-suppressing optical component as claimed in claim 3, wherein the sheet comprises a base layer, the amplitude compensation layer being formed on the base layer.
5. The diffraction-suppressing optical component as claimed in claim 4, wherein the amplitude compensation layer is formed by spraying a light shielding material on the base layer.
6. A diffraction-suppressing optical component as claimed in claim 1 or 2, wherein the sheet comprises a phase compensation layer configured such that the first region introduces a first phase change to light transmitted therethrough
Figure FDA0004155678670000011
Second phase change introduced to light transmitted through the second region +.>
Figure FDA0004155678670000012
With a predetermined phase difference->
Figure FDA0004155678670000013
To compensate for phase changes introduced by the transparent electrode pairs of the display screen to light passing therethrough>
Figure FDA0004155678670000014
7. The diffraction-suppressing optical component as recited in claim 6, wherein the predetermined phase difference
Figure FDA0004155678670000015
Phase variation introduced with the transparent electrode>
Figure FDA0004155678670000016
The method meets the following conditions:
Figure FDA0004155678670000017
n is an integer, & lt + & gt>
Figure FDA0004155678670000018
Figure FDA0004155678670000019
m is an integer, & lt + & gt>
Figure FDA00041556786700000110
and
Figure FDA00041556786700000111
8. The diffraction-suppressing optical component as recited in claim 6, wherein the predetermined phase difference
Figure FDA0004155678670000021
Phase variation introduced with the transparent electrode>
Figure FDA0004155678670000022
The method meets the following conditions: />
Figure FDA0004155678670000023
n is an integer.
9. The diffraction suppressing optical member as claimed in claim 1 or 2, wherein the sheet is formed with a plurality of gradation areas having gradation gradually decreasing from a position corresponding to a light emitting pixel of the display screen to the surroundings.
10. The diffraction suppressing optical component as recited in claim 6, wherein the sheet is formed with a plurality of gradation areas having gradation gradually decreasing from positions corresponding to the light emitting pixels of the display screen to the surroundings.
11. The diffraction suppressing optical member as recited in claim 9, wherein the gradation region includes shading points that are randomly distributed, and a distribution density of the shading points gradually decreases from a position corresponding to a light emitting pixel of the display screen to the surroundings.
12. The diffraction suppressing optical component as claimed in claim 10, wherein the gradation region includes shading points which are randomly distributed, and the distribution density of the shading points gradually decreases from a position corresponding to a light emitting pixel of the display screen to the surroundings.
13. The diffraction suppressing optical member as claimed in claim 1 or 2, wherein the sheet member is formed with a plurality of light shielding regions including a plurality of light-impermeable burrs extending from positions corresponding to light emitting pixels of the display screen to the surroundings, the burrs having randomly arranged positions or random lengths.
14. The diffraction suppressing optical member as recited in claim 6, wherein the sheet member is formed with a plurality of light shielding regions including a plurality of light-impermeable burrs extending from positions corresponding to light emitting pixels of the display screen to the surroundings, the burrs having randomly arranged positions or random lengths.
15. A diffraction-suppressed display screen, comprising:
a display screen allowing light to pass therethrough, and including a light emitting pixel and a transparent electrode layer for supplying power to the light emitting pixel, the transparent electrode layer including a transparent electrode forming a predetermined pattern; and
the diffraction-suppressing optical component as recited in any one of claims 1-14, wherein the diffraction-suppressing optical component is disposed such that the first region of the sheet is aligned with the predetermined pattern formed by the transparent electrodes of the display screen.
16. The diffraction-suppressed display screen as in claim 15, wherein the display screen has a display face for display, and the diffraction-suppressing optical component is attached to a side of the display screen opposite the display face.
17. The diffraction-suppressed display screen of claim 15, wherein the diffraction-suppressing optical components are disposed inside the display screen.
18. A diffraction-suppressed display screen comprising light-emitting pixels and a transparent electrode layer for supplying power to the light-emitting pixels, the transparent electrode layer including transparent electrodes forming a predetermined pattern, wherein the diffraction-suppressed display screen further includes an amplitude compensation layer configured to form a first region having a light transmittance substantially matching the predetermined pattern of the transparent electrodes and aligned with the predetermined pattern and a second region complementary to the first region, and the amplitude compensation layer is formed with light-transmitting regions and light-opaque regions in the second region, the light-opaque regions being dot-like regions randomly distributed in the light-transmitting regions for suppressing diffraction effects caused by periodic arrangement of the transparent electrodes, an area ratio occupied by the light-opaque regions in the second region being selected so that the light transmittance of the first region is larger than that of the second region to compensate for absorption of light by the transparent electrodes of the transparent display screen.
19. The diffraction-suppressed display screen of claim 18, wherein the opaque region occupies an area percentage in the second area that is substantially equal to the light transmittance of the transparent electrode.
20. The diffraction-suppressed display screen as in claim 18 or 19, wherein the amplitude compensation layer is formed of a light shielding material.
21. The diffraction-suppressed display screen of claim 18 or 19, further comprising a phase compensation layer configured such that the first region introduces a first phase change to light transmitted therethrough
Figure FDA0004155678670000031
Second phase change introduced to light transmitted through the second region +.>
Figure FDA0004155678670000032
With a predetermined phase difference->
Figure FDA0004155678670000033
To compensate for phase changes introduced by the transparent electrode pairs of the display screen to light passing therethrough>
Figure FDA0004155678670000034
22. The diffraction-suppressed display screen of claim 21, wherein the predetermined phase difference
Figure FDA0004155678670000035
Phase variation introduced with the transparent electrode>
Figure FDA0004155678670000036
The method meets the following conditions:
Figure FDA0004155678670000037
n is an integer, & lt + & gt>
Figure FDA0004155678670000038
Figure FDA0004155678670000039
m is an integer, & lt + & gt>
Figure FDA00041556786700000310
and
Figure FDA00041556786700000311
23. The diffraction-suppressed display screen of claim 21, wherein the predetermined phase difference
Figure FDA00041556786700000312
Phase variation introduced with the transparent electrode>
Figure FDA00041556786700000313
The method meets the following conditions: />
Figure FDA00041556786700000314
n is an integer.
24. The diffraction-suppressed display screen as claimed in claim 18 or 19, further comprising a plurality of gradation areas having gradation gradually decreasing from a position corresponding to the light emitting pixels to the surroundings.
25. The diffraction-suppressed display screen of claim 21, further including a plurality of gradation areas having gradation gradually decreasing from a position corresponding to the light emitting pixels to the surroundings.
26. The diffraction-suppressed display screen of claim 24, wherein the gradation region includes shading points that are randomly distributed, and the distribution density of the shading points gradually decreases from a position corresponding to the light emitting pixels to the surroundings.
27. The diffraction-suppressed display screen as in claim 25, wherein the gradation region includes shading points that are randomly distributed, the distribution density of the shading points gradually decreasing from the positions corresponding to the light emitting pixels to the surroundings.
28. The diffraction-suppressed display screen of claim 18 or 19, further including a plurality of light-shielding regions including a plurality of light-opaque burrs extending from positions corresponding to the light-emitting pixels to the surroundings, the burrs having randomly arranged positions or random lengths.
29. The diffraction-suppressed display screen of claim 21, further including a plurality of light-shielding regions including a plurality of light-opaque burrs extending circumferentially from positions corresponding to the light-emitting pixels, the burrs having randomly arranged positions or random lengths.
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