CN115331583B - Display panel, driving method thereof and display device - Google Patents
Display panel, driving method thereof and display device Download PDFInfo
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- CN115331583B CN115331583B CN202211057128.2A CN202211057128A CN115331583B CN 115331583 B CN115331583 B CN 115331583B CN 202211057128 A CN202211057128 A CN 202211057128A CN 115331583 B CN115331583 B CN 115331583B
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- 238000000034 method Methods 0.000 title claims abstract description 16
- 239000000758 substrate Substances 0.000 claims abstract description 79
- 239000010410 layer Substances 0.000 claims description 60
- 239000002096 quantum dot Substances 0.000 claims description 15
- 239000012790 adhesive layer Substances 0.000 claims description 10
- 208000008918 voyeurism Diseases 0.000 description 23
- 230000000694 effects Effects 0.000 description 11
- 244000144985 peep Species 0.000 description 8
- 230000003405 preventing effect Effects 0.000 description 8
- 230000000007 visual effect Effects 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 5
- 239000003086 colorant Substances 0.000 description 5
- 239000004642 Polyimide Substances 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 229920001721 polyimide Polymers 0.000 description 2
- 206010040844 Skin exfoliation Diseases 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
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- 238000011160 research Methods 0.000 description 1
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- 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
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/33—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being semiconductor devices, e.g. diodes
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Abstract
The invention relates to the technical field of display, and discloses a display panel, a driving method thereof and a display device, wherein the display panel comprises: a first substrate; the pixel units are positioned on one side of the first substrate, each pixel unit comprises at least two light-emitting elements, each pixel unit comprises a first pixel unit and a second pixel unit, each light-emitting element in the first pixel unit is a first light-emitting element, and each light-emitting element in the second pixel unit is a second light-emitting element; the collimating hole units are positioned on the light emitting side of the pixel units, each collimating hole unit comprises a plurality of shading layers, each shading layer comprises a light hole, the light holes of the plurality of shading layers form collimating holes, the collimating holes correspond to the second light emitting elements one by one, and the second light emitting elements at least partially overlap with the collimating holes corresponding to the second light emitting elements along the direction perpendicular to the plane where the first substrate is positioned. The invention can realize the peep-proof function.
Description
Technical Field
The invention relates to the technical field of display, in particular to a display panel, a driving method thereof and a display device.
Background
With the development of display technology, display products such as mobile phones and computers have been increasingly used. In general, a display product has a large viewing angle, and users at different viewing angles can know the information displayed by the display product. However, in some situations, the user may wish the information displayed by the display device to be unknown to other surrounding users, i.e., may wish the display device to have privacy functionality.
The conventional peep-proof display product generally adopts the peep-proof membrane added outside the display screen, filters the light of a large visual angle, only retains the light of the vertical and display screens, so that a user at the position of the large visual angle cannot receive the picture displayed by the display screen, but the peep-proof display device has the advantages that the thickness of the whole display device is increased due to the additionally added peep-proof membrane, and meanwhile, the production cost of the display device is increased.
Disclosure of Invention
In view of the above, the present invention provides a display panel, a driving method thereof, and a display device, which can realize the peep-proof function.
The present invention provides a display panel, comprising: a first substrate; the pixel units are positioned on one side of the first substrate, each pixel unit comprises at least two light-emitting elements, each pixel unit comprises a first pixel unit and a second pixel unit, each light-emitting element in the first pixel unit is a first light-emitting element, and each light-emitting element in the second pixel unit is a second light-emitting element; the collimating hole units are positioned on the light emitting side of the pixel units, each collimating hole unit comprises a plurality of shading layers, each shading layer comprises a light hole, the light holes of the plurality of shading layers form collimating holes, the collimating holes correspond to the second light emitting elements one by one, and the second light emitting elements at least partially overlap with the collimating holes corresponding to the second light emitting elements along the direction perpendicular to the plane where the first substrate is positioned.
Based on the same thought, the invention also provides a driving method of the display panel, which is applied to the display panel provided by the invention; the driving method comprises the following steps: in the non-peep-proof mode, the second pixel unit does not emit light; in the peep-proof mode, the second pixel unit emits light.
Based on the same thought, the invention also provides a display device which comprises the display panel provided by the invention.
Compared with the prior art, the display panel, the driving method thereof and the display device provided by the invention have the advantages that at least the following effects are realized:
in the display panel provided by the invention, the pixel units comprise a first pixel unit and a second pixel unit, wherein the light-emitting element in the first pixel unit is a first light-emitting element, and the light-emitting element in the second pixel unit is a second light-emitting element. The display panel further comprises a plurality of collimation hole units, the collimation hole units are located on the light emitting side of the pixel units, the collimation hole units comprise a plurality of shading layers, the shading layers can block light to pass through, the shading layers comprise light holes, the light holes of the shading layers form the collimation holes, the collimation holes are in one-to-one correspondence with the second light emitting elements, and the second light emitting elements and the collimation holes corresponding to the second light emitting elements are at least partially overlapped along the direction perpendicular to the plane where the first substrate is located. The light shielding layer can shield the large-visual angle light emitted by the second light emitting element, so that the large-visual angle light emitted by the second light emitting element cannot be emitted from the light emitting surface of the display panel. The light rays with small visual angles and the light rays with positive visual angles emitted by the second light-emitting element can be emitted from the light-emitting surface of the display panel through the corresponding collimation holes. The area of the display panel corresponding to the first light-emitting element is not provided with a collimation hole unit, so that the large-visual angle light rays, the small-visual angle light rays and the front-visual angle light rays emitted by the first light-emitting element can all be emitted from the light-emitting surface of the display panel.
The display panel provided by the invention has a peep-proof mode and a non-peep-proof mode. In the non-peeping mode, the second pixel unit does not emit light, and the first pixel unit emits light, so that a user can normally watch a display picture of the display panel because the display panel is usually in a positive viewing angle direction when the user views the display panel by eyes. When a user at the large viewing angle position views the display panel, large viewing angle light of the first light emitting element in the first pixel unit is emitted from the light emitting surface of the display panel, so that the user at the large viewing angle position can view a display picture of the display panel.
In the peep-proof mode, the second pixel units emit light, the first pixel units do not emit light or part of the first pixel units emit light, and when the picture is displayed by the second pixel units, only small-view-angle light and positive-view-angle light in the light emitted by the second light emitting elements in the second pixel units can be emitted from the light emitting surface of the display panel because the large-view-angle light emitted by the second light emitting elements in the second pixel units cannot be emitted from the light emitting surface of the display panel. Since the human eyes of the user observe the display panel in a normal viewing angle direction, the user can normally watch the display picture of the display panel. When a user at the large viewing angle position views the display panel, no large viewing angle light is emitted from the light emitting surface of the display panel in the area where the second pixel unit is arranged, and the user at the large viewing angle position cannot view the display picture of the display panel, so that the maximum peep-proof function is realized.
When one part of the content of the picture is displayed by the second pixel unit and the other part of the content is displayed by the first pixel unit, the second pixel unit emits light, and part of the first pixel unit emits light, and as the large-view angle light emitted by the second light emitting element in the second pixel unit cannot be emitted from the light emitting surface of the display panel, only the small-view angle light and the positive-view angle light in the light emitted by the second light emitting element in the second pixel unit can be emitted from the light emitting surface of the display panel. When a user at the large viewing angle position views the display panel, part of the content displayed by the second pixel unit cannot be peeped, the user at the large viewing angle position cannot completely view the display picture of the display panel, and only part of the content displayed by the first pixel unit can be peeped, so that the peeping-preventing function of a preset degree is realized.
Of course, it is not necessary for any one product to practice the invention to achieve all of the technical effects described above at the same time.
Other features of the present invention and its advantages will become apparent from the following detailed description of exemplary embodiments of the invention, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.
Fig. 1 is a schematic plan view of a display panel according to the present invention;
FIG. 2 is a cross-sectional view of the display panel of FIG. 1 taken along line A-A';
FIG. 3 is a cross-sectional view of the display panel of FIG. 1 taken along line B-B';
FIG. 4 is a cross-sectional view of the display panel of FIG. 1 taken along line C-C';
FIG. 5 is another cross-sectional view of the display panel of FIG. 1 taken along line A-A';
FIG. 6 is a schematic plan view of another display panel according to the present invention;
FIG. 7 is a schematic plan view of a display panel according to another embodiment of the present invention;
FIG. 8 is a schematic plan view of a display panel according to another embodiment of the present invention;
FIG. 9 is a schematic plan view of a display panel according to another embodiment of the present invention;
FIG. 10 is a schematic plan view of a display panel according to another embodiment of the present invention;
FIG. 11 is a schematic plan view of a display panel according to another embodiment of the present invention;
FIG. 12 is a schematic plan view of a display panel according to still another embodiment of the present invention;
fig. 13 is a schematic plan view of a display device according to the present invention.
Detailed Description
Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless it is specifically stated otherwise.
The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses.
Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of exemplary embodiments may have different values.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.
Fig. 1 is a schematic plan view of a display panel according to the present invention, fig. 2 is a cross-sectional view along A-A 'of the display panel shown in fig. 1, fig. 3 is a cross-sectional view along B-B' of the display panel shown in fig. 1, and referring to fig. 1-3, a display panel is provided according to the present embodiment, the display panel includes a first substrate 10, and the first substrate 10 may be a rigid substrate or a flexible substrate. When the first substrate 10 is a rigid substrate, the first substrate 10 may be a glass substrate. When the first substrate 10 is a flexible substrate, the first substrate 10 may be a Polyimide (PI) substrate.
The display panel further includes a plurality of pixel units P10, the pixel units P10 are located on one side of the first substrate 10, and the pixel units P10 include at least two light emitting elements 20. Alternatively, the light emitting element 20 may be a micro LED (Micro Light Emitting Diode ), however, in other embodiments of the present invention, the light emitting element 20 may be other types of light emitting elements, which will not be described herein.
The pixel unit P10 includes a first pixel unit P11 and a second pixel unit P12, wherein the light emitting element 20 in the first pixel unit P11 is a first light emitting element 21, and the light emitting element 20 in the second pixel unit P12 is a second light emitting element 22.
The display panel further includes a plurality of collimation hole units 30, the collimation hole units 30 are located on the light emitting side of the pixel unit P10, the collimation hole units 30 include a plurality of light shielding layers 31, the light shielding layers 31 can block light to pass through, the light shielding layers 31 include light transmitting holes 32, the light transmitting holes 32 of the plurality of light shielding layers 31 form collimation holes 40, the collimation holes 40 are in one-to-one correspondence with the second light emitting elements 22, and the second light emitting elements 22 and the collimation holes 40 corresponding to the second light emitting elements are at least partially overlapped along the direction perpendicular to the plane where the first substrate 10 is located. The light shielding layer 31 shields the large viewing angle light C1 emitted from the second light emitting element 22, so that the large viewing angle light C1 emitted from the second light emitting element 22 cannot be emitted from the light emitting surface of the display panel. The small-angle light C2 and the positive-angle light C3 emitted from the second light emitting element 22 can be emitted from the light emitting surface of the display panel through the corresponding collimating holes 40.
The collimating aperture unit 30 is not disposed in the display panel in a region corresponding to the first light emitting element 21, so that the large viewing angle light C1, the small viewing angle light C2 and the normal viewing angle light C3 emitted from the first light emitting element 21 can be emitted from the light emitting surface of the display panel.
The display panel provided by the invention has a peep-proof mode and a non-peep-proof mode.
In the non-peep-proof mode, the second pixel unit P12 does not emit light, and the first pixel unit P11 emits light, so that the user can normally view the display screen of the display panel because the user's eyes observe the display panel in a normal viewing angle direction. When a user at the large viewing angle position views the display panel, the large viewing angle light of the first light emitting element 21 in the first pixel unit P11 is emitted from the light emitting surface of the display panel, so that the user at the large viewing angle position can view the display screen of the display panel.
In the peep-proof mode, the second pixel unit P12 emits light, the first pixel unit P11 does not emit light or part of the first pixel unit P11 emits light, and when the frame is displayed by the second pixel unit P12, only the small viewing angle light C2 and the front viewing angle light C3 of the light emitted by the second light emitting element 22 in the second pixel unit P12 can be emitted from the light emitting surface of the display panel because the large viewing angle light C1 emitted by the second light emitting element 22 in the second pixel unit P12 cannot be emitted from the light emitting surface of the display panel. Since the human eyes of the user observe the display panel in a normal viewing angle direction, the user can normally watch the display picture of the display panel. When a user at the large viewing angle position views the display panel, the region provided with the second pixel unit P12 in the display panel does not have large viewing angle light rays C1 emitted from the light emitting surface of the display panel, and the user at the large viewing angle position cannot view the display picture of the display panel, so that the maximum peep-proof function is realized; when a part of the content of the picture is displayed by the second pixel unit P12 and another part of the content is displayed by the first pixel unit P11, the second pixel unit P12 emits light, and a part of the first pixel unit P11 emits light, and since the large-viewing angle light emitted by the second light emitting element 22 in the second pixel unit P12 cannot be emitted from the light emitting surface of the display panel, only the small-viewing angle light and the positive-viewing angle light in the light emitted by the second light emitting element 22 in the second pixel unit P12 can be emitted from the light emitting surface of the display panel, and since the human eyes of a user observe the display panel in a normal-viewing angle direction, the user can normally observe the display picture of the display panel. When a user at the large viewing angle position views the display panel, part of the content displayed by the second pixel unit P12 cannot be peeped, the user at the large viewing angle position cannot completely view the display screen of the display panel, and only part of the content displayed by the first pixel unit P11 can be peeped, so that the peep-proof function of a preset degree is realized.
It should be noted that, the positive viewing angle light refers to a light outgoing in a direction perpendicular to the light outgoing surface of the display panel, the large viewing angle light refers to a light having a larger included angle with the direction perpendicular to the light outgoing surface of the display panel, the small viewing angle light refers to a light having a smaller included angle with the direction perpendicular to the light outgoing surface of the display panel, and, in an exemplary embodiment, a light having an included angle greater than 30 ° with the direction perpendicular to the light outgoing surface of the display panel is a large viewing angle light, and a light having an included angle less than 30 ° with the direction perpendicular to the light outgoing surface of the display panel is a small viewing angle light. In the related embodiments of the present invention, the related descriptions are applicable together, and the present invention will not be described in detail.
The front view angle direction is a direction perpendicular to the light emitting surface of the display panel. In the related embodiments of the present invention, the related descriptions are applicable together, and the present invention will not be described in detail.
It should be noted that, in fig. 2, the collimation hole unit 30 is exemplarily shown to include 4 light shielding layers 31, and in other embodiments of the present invention, the collimation hole unit 30 may further be provided with other numbers of light shielding layers 31 according to actual production needs, which is not described herein.
With continued reference to fig. 1 and fig. 2, in some alternative embodiments, the vertical projection of the second light emitting element 22 on the plane of the first substrate 10 is located in the vertical projection of the corresponding collimation hole 40 on the plane of the first substrate 10, so that the front-view angle light rays C3 emitted by the second light emitting element 22 can be emitted from the light emitting surface of the display panel through the collimation hole 40 corresponding to the second light emitting element, so that the arrangement of the collimation hole unit 30 can be prevented from affecting the front-view angle light emitted by the second light emitting element 22, and the arrangement of the collimation hole unit 30 can be prevented from affecting the display effect of a user when the user views the display panel at the front-view angle.
With continued reference to fig. 1 and 2, in some alternative embodiments, the display panel further includes a cover plate 40, and the cover plate 40 and/or the first substrate 10 are provided with a light shielding layer 31 thereon.
Specifically, the first substrate 10 of the display panel may be provided with a light shielding layer 31, where the light shielding layer 31 on the first substrate 10 is disposed around the second light emitting element 22 in the second pixel unit P12, and the light shielding layer 31 on the first substrate 10 may shield the side light emitted by the second light emitting element 22, so as to prevent the side light emitted by the second light emitting element 22 from being emitted from the light emitting surface of the display panel.
The cover plate 40 in the display panel can be provided with the shading layer 31, the shading layer 31 on the cover plate 40 can shade the large-visual angle light C1 emitted by the second light-emitting element 22, and meanwhile, the alignment of the cover plate 40 and the first substrate 10 can be realized based on the light holes 32 in the shading layer 31 on the cover plate 40 and the light holes 32 in the lower shading layer 31, so that the alignment precision of the cover plate 40 and the first substrate 10 is improved.
With continued reference to fig. 1 and 2, in some alternative embodiments, the display panel further includes a first adhesive layer 50, where the first adhesive layer 50 is located on a side of the pixel unit P10 away from the first substrate 10, and at least one light shielding layer 31 is disposed in the first adhesive layer 50. The light shielding layer 31 disposed in the first adhesive layer 50 can shield the light C1 with a large viewing angle emitted by the second light emitting element 22, and effectively reduce the risk of peeling the light shielding layer 31 from the display panel.
Fig. 4 is a cross-sectional view of the display panel shown in fig. 1 along C-C', referring to fig. 1 and 4, in some alternative embodiments, the first substrate 10 includes a first sub-portion 11 and a second sub-portion 12, wherein the first light emitting element 21 is disposed on the first sub-portion 11, and the second light emitting element 22 is disposed on the second sub-portion 12, and the height of the first sub-portion 11 is greater than the height of the second sub-portion 12 along a direction perpendicular to the plane of the first substrate 10.
The first adhesive layer 50 includes a first portion 51 and a second portion 52, wherein the first portion 51 is located between the first sub-portion 11 and the cover 40, the second portion 52 is located between the second sub-portion 12 and the cover 40, and a height of the first portion 51 is smaller than a height of the second portion 52 along a direction perpendicular to a plane of the first substrate 10.
Specifically, the height of the second sub-portion 12 along the direction perpendicular to the plane of the first substrate 10 can be reduced, so that the height of the second sub-portion 52 along the direction perpendicular to the plane of the first substrate 10 can be increased, thereby being beneficial to realizing that more light shielding layers 31 are arranged in the second sub-portion 52 while ensuring that the thickness of the display panel is smaller, and simultaneously being beneficial to improving the flatness of the surface of the first adhesive layer 50 away from one side of the first substrate 10, and facilitating the setting of subsequent film layers.
It should be noted that fig. 2 to fig. 4 exemplarily show that one pixel unit P10 includes three light emitting elements 20, and the colors of the light emitting elements 20 in the same pixel unit P10 are different. The three light emitting elements 20 may be, for example, a red light emitting element, a green light emitting element, and a blue light emitting element, respectively. At this time, there is no need to provide a color resist layer in the display panel.
Fig. 5 is another cross-sectional view of the display panel shown in fig. 1 along A-A', and referring to fig. 1 and 5, in some alternative embodiments, the light emitting elements 20 emit light of the same color in the same pixel unit P10. Alternatively, the light emitting element 20 may be a blue light emitting element.
The display panel further includes a second substrate 60, and the second substrate 60 is positioned between the first substrate 10 and the cover plate 40. The side of the second substrate 60 near the first substrate 10 may be provided with a color resist layer 70, where the color resist layer 70 includes a plurality of color resist units 71, and the color resist units 71 are in one-to-one correspondence with the light emitting elements 20. The light emitted from the light emitting element 20 can be adjusted to light of a corresponding color by the color resistance unit 71 of different colors. Optionally, the color block unit 71 includes at least three color block units, which illustratively include a red color block unit, a green color block unit, and a blue color block unit, and of course, the present invention is not limited thereto, and the color block unit 71 may also include color block units of other colors, which are not described herein in detail.
The side of the second substrate 60 near the first substrate 10 may also be provided with a quantum dot layer 80, where the quantum dot layer 80 includes a plurality of quantum dot units 81, and the quantum dot units 81 are in one-to-one correspondence with the light emitting elements 20. The light emitted from the light emitting element 20 can be adjusted to light of different colors by the quantum dot unit 81 having quantum dots of different sizes. Optionally, the quantum dot unit 81 includes at least a quantum dot unit having three quantum dots with different sizes, and accordingly, light can be adjusted to at least three colors, which are exemplified by red light, green light, and blue light, respectively, although the invention is not limited thereto, and the quantum dot unit 81 may also include a quantum dot unit having quantum dots with other sizes, which is not described herein in detail.
The second substrate 60 is provided with a light shielding layer 31 at a side close to the first substrate 10 and/or at a side close to the cover plate 40. The light shielding layer 31 can shield the large-viewing angle light ray C1 emitted by the second light emitting element 22, and meanwhile, the alignment of the second substrate 60 and the first substrate 10 can be realized based on the light holes 32 in the light shielding layer 31 on the second substrate 60 and the light holes 32 in the light shielding layer 31 on the first substrate 10, which is favorable for improving the alignment precision of the second substrate 60 and the first substrate 10, and similarly, the alignment of the second substrate 60 and the cover plate 40 can be realized based on the light holes 32 in the light shielding layer 31 on the second substrate 60 and the light holes 32 in the light shielding layer 31 on the cover plate 40, which is favorable for improving the alignment precision of the second substrate 60 and the cover plate 40.
In some alternative embodiments, the ratio of the number of the second pixel units to the number of the first pixel units is greater than or equal to 1:3, that is, the number of the second pixel units in the display panel is greater, so that the peep-proof effect of the display panel is improved.
According to the research, when the display panel displays a normal picture, when the shielding of the picture display content is at least 1/3, a certain peep-proof effect can be achieved on the picture content, namely, the reading speed or the identification degree of people is obviously reduced. Therefore, the number ratio of the second pixel units to the first pixel units can be set to be larger than or equal to 1:3, so that the peep-proof effect of the display panel is realized in the peep-proof mode.
For example, referring to fig. 1, the ratio of the number of the second pixel units P12 to the first pixel units P11 is 1:2. Referring to fig. 6, fig. 6 is a schematic plan view of another display panel provided by the present invention, where the ratio of the number of the second pixel units P12 to the number of the first pixel units P11 is 1:3. Fig. 1 and fig. 6 only exemplarily show that the number ratio of the second pixel unit to the first pixel unit in the display panel is 1:2 and 1:3, respectively, and in other embodiments of the present invention, the number ratio of the second pixel unit to the first pixel unit in the display panel may also be other values, which are not described herein in detail.
With continued reference to fig. 1, in some alternative embodiments, the display panel includes a plurality of pixel cell rows P20 arranged along a first direction X, the pixel cell rows P20 including a plurality of pixel cells P10 arranged along a second direction Y, wherein the first direction X and the second direction Y intersect. Optionally, the first direction X and the second direction Y are perpendicular.
The pixel cell line P20 includes a first pixel cell line P21 and a second pixel cell line P22, the first pixel cell line P21 includes only the first pixel cell P11, and the second pixel cell line P22 includes at least the second pixel cell P22. That is, the second pixel unit P22 is located only in the second pixel unit row P22, and the second pixel unit P22 is not disposed in the first pixel unit row P21.
Along the first direction X, at least one first pixel cell row P21 and at least one second pixel cell row P22 are alternately arranged in sequence. Therefore, the first pixel unit row P21 and the second pixel unit row P22 can be uniformly arranged in the whole area of the display panel, and the second pixel units P12 are prevented from being intensively arranged in a certain area of the display panel, so that the situation that the display effect of the area is poor in the non-peeping mode is avoided, meanwhile, the situation that the second pixel units P12 are not arranged in a larger area of the display panel is effectively avoided, and the situation that the peeping effect of a part of the area of the display panel is poor in the peeping mode is effectively avoided.
Referring to fig. 1 and 6, the density of the second pixel units P12 in the second direction Y is greater than that of the second pixel units P12 in the first direction X, and is suitable for a display panel displaying more contents in the second direction Y, for example, a display panel having a longer length in the second direction Y.
With continued reference to fig. 6, the first to fourth rows of pixel unit rows P20 are described as one repeating unit, and in the non-peep-proof mode, the first pixel unit rows P21 of the first to third rows are displayed, and in the peep-proof mode, in order to ensure that PPI (pixel Per Inch) of the display panel is the same, the first pixel unit rows P21 of the first and second rows are still turned on, the first pixel unit rows P21 of the third row are turned off, and then the second pixel unit rows P22 of the fourth row are turned on, so that the PPI of the display panel is the same in the non-peep-proof mode and the peep-proof mode, and the peep-proof at this time is the peep-proof of a part of the content of the display screen.
Fig. 7 is a schematic plan view of still another display panel provided by the present invention, and referring to fig. 7, in some alternative embodiments, the second pixel unit row P22 includes only the second pixel units P12.
The display panel includes a plurality of pixel cell columns P30 arranged in the second direction Y, and the pixel cell columns P30 include a plurality of pixel cells P10 arranged in the first direction X.
The pixel cell column P30 includes a first pixel cell column P31 and a second pixel cell column P32, the first pixel cell column P31 includes only the first pixel cell P11, and the second pixel cell column P32 includes the first pixel cell P11 and the second pixel cell P12.
Specifically, when the ratio of the number of the second pixel units P12 to the number of the first pixel units P11 in the display panel meets the design requirement, the second pixel units P12 may not be disposed in a partial area in the second pixel unit row P22, so as to implement that only the second pixel units P12 are included in the second pixel unit row P22, that is, only the second pixel units P12 are disposed in the second pixel unit row P22, and at this time, the density of the second pixel units P12 in the first direction X in the display panel may be increased. The density of the second pixel units P12 along the first direction X is greater than the density of the second pixel units P12 along the second direction Y, and the method is applicable to display panels displaying more contents along the first direction X, such as display panels having longer lengths along the first direction X.
With continued reference to fig. 7, the first pixel unit row P20 of the first row to the fourth row is used as a repeating unit, in the non-peeping mode, the first pixel unit row P21 of the first row and the third row is displayed, in the peeping mode, in order to ensure that PPI of the display panel is the same, even columns in the first pixel unit row P21 of the first row and the third row are still turned on, odd columns in the first pixel unit row P21 of the first row and the third row are turned off, and then the second pixel unit row P22 of the second row and the fourth row is turned on, so that PPI of the display panel is the same in the non-peeping mode and the peeping mode, and peeping at this time is peeping of part of the content of the display screen.
With continued reference to fig. 7, in some alternative embodiments, the arrangement manner of the second pixel units P12 in the two adjacent second pixel unit rows P22 is the same, so that the arrangement of the second pixel unit rows P22 in the display panel is facilitated, and at the same time, the driving of the second pixel units P12 in the second pixel unit rows P22 in the non-peep-proof mode and the peep-proof mode is facilitated.
It should be noted that, fig. 7 illustrates an arrangement manner of the second pixel units P12 in the second pixel unit row P22 in the display panel, in other embodiments of the present invention, the second pixel units P12 in the second pixel unit row P22 in the display panel may be arranged in other manners, and referring to fig. 8, for example, fig. 8 is a schematic plan view of another display panel provided in the present invention, and the arrangement manner of the second pixel units P12 in the second pixel unit row P22 in the display panel may refer to fig. 8, however, in other embodiments of the present invention, the second pixel units P12 in the second pixel unit row P22 in the display panel may also be arranged in other manners, which are not described herein.
Fig. 9 is a schematic plan view of still another display panel provided by the present invention, and referring to fig. 9, in some alternative embodiments, the second pixel unit row P22 includes only the second pixel units P12. There are two adjacent rows of second pixel unit rows P22 in which the second pixel units P12 are at least partially arranged offset in the first direction X. The second pixel units P12 can be uniformly arranged in the whole area of the display panel, so that the situation that the second pixel units P12 are not arranged in a large area in the display panel, the situation that the peep preventing effect is poor in the peep preventing mode of part of the area in the display panel is effectively avoided, and the peep preventing effect of the display panel in the peep preventing mode is effectively improved.
It should be noted that, in fig. 9, an arrangement manner of the second pixel units P12 in the display panel is exemplarily shown, in other embodiments of the present invention, the second pixel units P12 in the display panel may be arranged in other manners, and referring to fig. 10, fig. 10 is an exemplary plan view of another display panel provided by the present invention, and the arrangement manner of the second pixel units P12 in the display panel may refer to fig. 10, however, in other embodiments of the present invention, the second pixel units P12 in the display panel may be arranged in other manners, which are not repeated herein.
Similarly, the driving modes of the display panel in the non-peep-preventing mode and the peep-preventing mode in fig. 8-10 can refer to the driving modes of the display panel in the non-peep-preventing mode and the peep-preventing mode in fig. 7, and the invention is not repeated here.
Fig. 11 is a schematic plan view of another display panel according to the present invention, referring to fig. 11, in some alternative embodiments, the second pixel unit row P22 includes a first pixel unit P11 and a second pixel unit P12, where the first pixel unit P11 emits light in the second pixel unit row P22 in the non-peep-preventing mode and the peep-preventing mode, so that the number of the pixel units P10 used for emitting light in the display panel in the non-peep-preventing mode and the peep-preventing mode is effectively increased, which is beneficial to improving the display effect of the display panel.
And in the same second pixel unit row P22, at least one first pixel unit P11 and at least one second pixel unit P12 are alternately arranged in turn, so that the first pixel unit P11 and the second pixel unit P12 in the second pixel unit row P22 can be uniformly arranged in the area corresponding to the second pixel unit row P22, the condition that the second pixel unit P12 is intensively arranged in a certain area of the display panel is avoided, the condition that the display effect of the area is poor in the non-peeping mode is avoided, meanwhile, the condition that the second pixel unit P12 is not arranged in a larger area of the display panel is effectively avoided, and the condition that the peeping effect of a part of the area in the display panel is poor in the peeping mode is effectively avoided.
With continued reference to fig. 11, the description is made with the first row and the second row of pixel unit rows P20 as one repeating unit, in the non-peeping mode, the first pixel unit row P21 of the first row is displayed, and in the peeping mode, the second pixel unit row P22 of the second row is turned on, so that the same PPI of the display panel can be implemented in the non-peeping mode and the peeping mode, and at this time, the peeping is the peeping of a part of the content of the display screen. In addition, in the peep-proof mode, the display picture of the display panel cannot be provided with the moire.
With continued reference to fig. 11, in some alternative embodiments, there are two adjacent rows of second pixel cell rows P22 in which the second pixel cells P12 are at least partially arranged offset in the first direction X. The second pixel units P12 can be uniformly arranged in the whole area of the display panel, so that the situation that the second pixel units P12 are not arranged in a large area in the display panel, the situation that the peep preventing effect is poor in the peep preventing mode of part of the area in the display panel is effectively avoided, and the peep preventing effect of the display panel in the peep preventing mode is effectively improved.
Fig. 12 is a schematic plan view of still another display panel according to the present invention, and referring to fig. 12, in some alternative embodiments, the display panel includes a plurality of pixel unit groups P40, and the pixel unit groups P40 include a first pixel unit group P41 and a second pixel unit group P42.
The first pixel unit group P41 includes at least one first pixel unit P11 and at least one second pixel unit P12, and the pixel units P10 are arranged along the first direction X in the same first pixel unit group P41.
The second pixel cell group P42 includes at least one first pixel cell P11.
Along the second direction Y, the first pixel units P11 in the at least one second pixel unit group P42 and the first pixel units P11 in the first pixel unit group P41 adjacent to the first pixel unit group P are at least partially arranged in a staggered manner, wherein the first direction X and the second direction Y intersect.
Specifically, along the second direction Y, there are at least partial dislocation arrangement of the first pixel units P11 in the second pixel unit group P42 and the first pixel units P11 in the first pixel unit group P41 adjacent thereto, that is, along the second direction Y, there is no dislocation arrangement of the first pixel units P11 in the second pixel unit group P42 and the first pixel units P11 in the first pixel unit group P41 adjacent thereto along the first direction X, and the first pixel units P11 in the second pixel unit group P42 can move along the direction in which the first pixel units P11 in the first pixel unit group P41 point to the second pixel units P12, so that the problem of moire appearing in the display screen caused by dislocation arrangement of the first pixel units P11 in the second pixel unit group P42 and the second pixel units P12 in the first pixel unit group P41 in the anti-peeping mode is effectively alleviated.
With continued reference to fig. 12, in the non-peep-preventing mode, the first pixel unit P11 in the first pixel unit group P41 is turned on, the first pixel unit P11 in the second pixel unit group P42 is turned on, in the peep-preventing mode, the second pixel unit P12 in the first pixel unit group P41 is turned on, and the first pixel unit P11 in the second pixel unit group P42 is turned on, so that the PPI of the display panel is the same in the non-peep-preventing mode as in the peep-preventing mode, and peep-preventing at this time is peep-preventing of a part of the content of the display screen. In addition, in the peep-proof mode, the condition that the display picture of the display panel has moire can be improved.
The embodiment provides a driving method of a display panel, which is applied to the display panel provided by the invention. The driving method comprises the following steps:
in the non-peep-proof mode, the second pixel unit does not emit light;
in the peep-proof mode, the second pixel unit emits light.
Specifically, the pixel unit P10 includes a first pixel unit P11 and a second pixel unit P12, where the light emitting element 20 in the first pixel unit P11 is a first light emitting element 21, and the light emitting element 20 in the second pixel unit P12 is a second light emitting element 22.
The display panel further includes a plurality of collimation hole units 30, the collimation hole units 30 are located on the light emitting side of the pixel unit P10, the collimation hole units 30 include a plurality of light shielding layers 31, the light shielding layers 31 can block light to pass through, the light shielding layers 31 include light transmitting holes 32, the light transmitting holes 32 of the plurality of light shielding layers 31 form collimation holes 40, the collimation holes 40 are in one-to-one correspondence with the second light emitting elements 22, and the second light emitting elements 22 and the collimation holes 40 corresponding to the second light emitting elements are at least partially overlapped along the direction perpendicular to the plane where the first substrate 10 is located. The light shielding layer 31 shields the large viewing angle light C1 emitted from the second light emitting element 22, so that the large viewing angle light C1 emitted from the second light emitting element 22 cannot be emitted from the light emitting surface of the display panel. The small-angle light C2 and the positive-angle light C3 emitted from the second light emitting element 22 can be emitted from the light emitting surface of the display panel through the corresponding collimating holes 40.
The collimating aperture unit 30 is not disposed in the display panel in a region corresponding to the first light emitting element 21, so that the large viewing angle light C1, the small viewing angle light C2 and the normal viewing angle light C3 emitted from the first light emitting element 21 can be emitted from the light emitting surface of the display panel.
The display panel provided by the invention has a peep-proof mode and a non-peep-proof mode.
In the non-peep-proof mode, the second pixel unit P12 does not emit light, and the first pixel unit P11 emits light, so that the user can normally view the display screen of the display panel because the user's eyes observe the display panel in a normal viewing angle direction. When a user at the large viewing angle position views the display panel, the large viewing angle light of the first light emitting element 21 in the first pixel unit P11 is emitted from the light emitting surface of the display panel, so that the user at the large viewing angle position can view the display screen of the display panel.
In the peep-proof mode, the second pixel unit P12 emits light, and the first pixel unit P11 emits light when the first pixel unit P11 emits no light, and when the frame is displayed by the second pixel unit P12, only the small-view angle light C2 and the normal-view angle light C3 of the light emitted by the second light emitting element 22 in the second pixel unit P12 can be emitted from the light emitting surface of the display panel because the large-view angle light C1 emitted by the second light emitting element 22 in the second pixel unit P12 cannot be emitted from the light emitting surface of the display panel. Since the human eyes of the user observe the display panel in a normal viewing angle direction, the user can normally watch the display picture of the display panel. When a user at the large viewing angle position views the display panel, the region provided with the second pixel unit P12 in the display panel does not have large viewing angle light rays C1 emitted from the light emitting surface of the display panel, and the user at the large viewing angle position cannot view the display picture of the display panel, so that the maximum peep-proof function is realized; when a part of the content of the picture is displayed by the second pixel unit P12 and another part of the content is displayed by the first pixel unit P11, the second pixel unit P12 emits light, and a part of the first pixel unit P11 emits light, and since the large-viewing angle light emitted by the second light emitting element 22 in the second pixel unit P12 cannot be emitted from the light emitting surface of the display panel, only the small-viewing angle light and the positive-viewing angle light in the light emitted by the second light emitting element 22 in the second pixel unit P12 can be emitted from the light emitting surface of the display panel, and since the human eyes of a user observe the display panel in a normal-viewing angle direction, the user can normally observe the display picture of the display panel. When a user at the large viewing angle position views the display panel, part of the content displayed by the second pixel unit P12 cannot be peeped, the user at the large viewing angle position cannot completely view the display screen of the display panel, and only part of the content displayed by the first pixel unit P11 can be peeped, so that the peep-proof function of a preset degree is realized.
In some alternative embodiments, please refer to fig. 13, fig. 13 is a schematic plan view of a display device according to the present invention, and a display device 1000 according to the present embodiment includes a display panel 100 according to the above embodiment of the present invention. The embodiment of fig. 13 is only an example of a mobile phone, and the display device 1000 is described, and it is to be understood that the display device 1000 provided in the embodiment of the present invention may be any other display device 1000 having a display function, such as a computer, a television, a vehicle-mounted display device, etc., which is not particularly limited in this respect. The display device 1000 provided in the embodiment of the present invention has the beneficial effects of the display panel 100 provided in the embodiment of the present invention, and the specific description of the display panel 100 in the above embodiments may be referred to in the embodiments, and the description of the embodiment is omitted herein.
As can be seen from the above embodiments, the display panel, the driving method thereof and the display device provided by the invention at least realize the following beneficial effects:
in the display panel provided by the invention, the pixel units comprise a first pixel unit and a second pixel unit, wherein the light-emitting element in the first pixel unit is a first light-emitting element, and the light-emitting element in the second pixel unit is a second light-emitting element. The display panel further comprises a plurality of collimation hole units, the collimation hole units are located on the light emitting side of the pixel units, the collimation hole units comprise a plurality of shading layers, the shading layers can block light to pass through, the shading layers comprise light holes, the light holes of the shading layers form the collimation holes, the collimation holes are in one-to-one correspondence with the second light emitting elements, and the second light emitting elements and the collimation holes corresponding to the second light emitting elements are at least partially overlapped along the direction perpendicular to the plane where the first substrate is located. The light shielding layer can shield the large-visual angle light emitted by the second light emitting element, so that the large-visual angle light emitted by the second light emitting element cannot be emitted from the light emitting surface of the display panel. The light rays with small visual angles and the light rays with positive visual angles emitted by the second light-emitting element can be emitted from the light-emitting surface of the display panel through the corresponding collimation holes. The area of the display panel corresponding to the first light-emitting element is not provided with a collimation hole unit, so that the large-visual angle light rays, the small-visual angle light rays and the front-visual angle light rays emitted by the first light-emitting element can all be emitted from the light-emitting surface of the display panel.
The display panel provided by the invention has a peep-proof mode and a non-peep-proof mode. In the non-peeping mode, the second pixel unit does not emit light, and the first pixel unit emits light, so that a user can normally watch a display picture of the display panel because the display panel is usually in a positive viewing angle direction when the user views the display panel by eyes. When a user at the large viewing angle position views the display panel, large viewing angle light of the first light emitting element in the first pixel unit is emitted from the light emitting surface of the display panel, so that the user at the large viewing angle position can view a display picture of the display panel. In the peep-proof mode, the second pixel units emit light, the first pixel units do not emit light or part of the first pixel units emit light, and when the picture is displayed by the second pixel units, only small-view-angle light and positive-view-angle light in the light emitted by the second light emitting elements in the second pixel units can be emitted from the light emitting surface of the display panel because the large-view-angle light emitted by the second light emitting elements in the second pixel units cannot be emitted from the light emitting surface of the display panel. Since the human eyes of the user observe the display panel in a normal viewing angle direction, the user can normally watch the display picture of the display panel. When a user at the large viewing angle position views the display panel, no large viewing angle light is emitted from the light emitting surface of the display panel in the area where the second pixel unit is arranged, and the user at the large viewing angle position cannot view the display picture of the display panel, so that the maximum peep-proof function is realized; when one part of the content of the picture is displayed by the second pixel unit and the other part of the content is displayed by the first pixel unit, the second pixel unit emits light, and part of the first pixel unit emits light, and as the large-view angle light emitted by the second light emitting element in the second pixel unit cannot be emitted from the light emitting surface of the display panel, only the small-view angle light and the positive-view angle light in the light emitted by the second light emitting element in the second pixel unit can be emitted from the light emitting surface of the display panel. When a user at the large viewing angle position views the display panel, part of the content displayed by the second pixel unit cannot be peeped, the user at the large viewing angle position cannot completely view the display picture of the display panel, and only part of the content displayed by the first pixel unit can be peeped, so that the peeping-preventing function of a preset degree is realized.
While certain specific embodiments of the invention have been described in detail by way of example, it will be appreciated by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.
Claims (15)
1. A display panel, comprising:
a first substrate;
the pixel units are positioned on one side of the first substrate, each pixel unit comprises at least two light-emitting elements, each pixel unit comprises a first pixel unit and a second pixel unit, each light-emitting element in the first pixel unit is a first light-emitting element, and each light-emitting element in the second pixel unit is a second light-emitting element;
the collimating hole units are positioned on the light emitting side of the pixel units, the collimating hole units comprise a plurality of shading layers, the shading layers comprise light holes, the light holes of the shading layers form collimating holes, the collimating holes are in one-to-one correspondence with the second light emitting elements, and the second light emitting elements and the collimating holes corresponding to the second light emitting elements at least partially overlap in the direction perpendicular to the plane where the first substrate is positioned;
The display device further comprises a plurality of pixel unit rows arranged along a first direction, wherein the pixel unit rows comprise a plurality of pixel units arranged along a second direction, and the first direction and the second direction are intersected;
the pixel unit row comprises a first pixel unit row and a second pixel unit row, the first pixel unit row only comprises the first pixel unit, and the second pixel unit row at least comprises the second pixel unit;
at least one first pixel unit row and at least one second pixel unit row are sequentially and alternately arranged along the first direction.
2. The display panel of claim 1, wherein the display panel comprises,
the vertical projection of the second light-emitting element on the plane where the first substrate is located in the vertical projection of the corresponding collimation hole on the plane where the first substrate is located.
3. The display panel of claim 2, wherein the display panel comprises,
the display panel further comprises a cover plate, and the light shielding layer is arranged on the cover plate and/or the first substrate.
4. The display panel according to claim 3, wherein,
the display panel further comprises a first adhesive layer, the first adhesive layer is located on one side, far away from the first substrate, of the pixel unit, and at least one light shielding layer is arranged in the first adhesive layer.
5. The display panel of claim 4, wherein the display panel comprises,
the first substrate comprises a first sub-part and a second sub-part, wherein the first light-emitting element is arranged on the first sub-part, the second light-emitting element is arranged on the second sub-part, and the height of the first sub-part is larger than that of the second sub-part along the direction perpendicular to the plane of the first substrate;
the first adhesive layer comprises a first subsection and a second subsection, wherein the first subsection is located between the first subsection and the cover plate, the second subsection is located between the second subsection and the cover plate, and the height of the first subsection is smaller than that of the second subsection along the direction perpendicular to the plane where the first substrate is located.
6. The display panel according to claim 3 or 4, wherein,
in the same pixel unit, the light emitting color of each light emitting element is the same;
the display panel further comprises a second substrate, wherein the second substrate is positioned between the first substrate and the cover plate;
a color resistance layer is arranged on one side of the second substrate, which is close to the first substrate, and comprises a plurality of color resistance units, wherein the color resistance units are in one-to-one correspondence with the light-emitting elements, and/or a quantum dot layer is arranged on one side of the second substrate, which is close to the first substrate, and comprises a plurality of quantum dot units, and the quantum dot units are in one-to-one correspondence with the light-emitting elements;
The light shielding layer is arranged on one side of the second substrate close to the first substrate and/or one side of the second substrate close to the cover plate.
7. The display panel of claim 1, wherein the display panel comprises,
the ratio of the number of the second pixel units to the number of the first pixel units is greater than or equal to 1:3.
8. The display panel of claim 1, wherein the display panel comprises,
the second pixel unit row includes only the second pixel units;
the display panel comprises a plurality of pixel unit columns arranged along the second direction, wherein each pixel unit column comprises a plurality of pixel units arranged along the first direction;
the pixel unit columns include a first pixel unit column including only the first pixel unit and a second pixel unit column including the first pixel unit and the second pixel unit.
9. The display panel of claim 1, wherein the display panel comprises,
and the arrangement modes of the second pixel units in the two adjacent rows of the second pixel unit rows are the same.
10. The display panel of claim 1, wherein the display panel comprises,
the second pixel unit row includes only the second pixel units;
And the second pixel units in two adjacent rows of the second pixel unit rows are at least partially arranged in a staggered manner in the first direction.
11. The display panel of claim 1, wherein the display panel comprises,
the second pixel unit row comprises the first pixel units and the second pixel units, and at least one first pixel unit and at least one second pixel unit are sequentially and alternately arranged in the same second pixel unit row.
12. The display panel of claim 11, wherein the display panel comprises,
and the second pixel units in two adjacent rows of the second pixel unit rows are at least partially arranged in a staggered manner in the first direction.
13. A display panel, comprising:
a first substrate;
the pixel units are positioned on one side of the first substrate, each pixel unit comprises at least two light-emitting elements, each pixel unit comprises a first pixel unit and a second pixel unit, each light-emitting element in the first pixel unit is a first light-emitting element, and each light-emitting element in the second pixel unit is a second light-emitting element;
the collimating hole units are positioned on the light emitting side of the pixel units, the collimating hole units comprise a plurality of shading layers, the shading layers comprise light holes, the light holes of the shading layers form collimating holes, the collimating holes are in one-to-one correspondence with the second light emitting elements, and the second light emitting elements and the collimating holes corresponding to the second light emitting elements at least partially overlap in the direction perpendicular to the plane where the first substrate is positioned; the display panel comprises a plurality of pixel unit groups, wherein the pixel unit groups comprise a first pixel unit group and a second pixel unit group;
The first pixel unit group comprises at least one first pixel unit and at least one second pixel unit, and the pixel units are arranged along a first direction in the same first pixel unit group;
the second pixel unit group comprises at least one first pixel unit;
and at least one first pixel unit in the second pixel unit group and the first pixel units in the first pixel unit group adjacent to the first pixel unit are at least partially arranged in a dislocation manner along a second direction, wherein the first direction and the second direction are intersected.
14. A driving method of a display panel, characterized by being applied to the display panel of any one of claims 1 to 13;
the driving method includes:
in the non-peep-proof mode, the second pixel unit does not emit light;
in the peep-proof mode, the second pixel unit emits light.
15. A display device, characterized in that the display device comprises a display panel according to any one of claims 1-13.
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| CN116056514B (en) * | 2022-12-28 | 2023-12-19 | 惠科股份有限公司 | Display panel, manufacturing method thereof and display device |
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