CN111740031A - Display panel, display device and electronic equipment - Google Patents
Display panel, display device and electronic equipment Download PDFInfo
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- CN111740031A CN111740031A CN202010766687.5A CN202010766687A CN111740031A CN 111740031 A CN111740031 A CN 111740031A CN 202010766687 A CN202010766687 A CN 202010766687A CN 111740031 A CN111740031 A CN 111740031A
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- 230000000903 blocking effect Effects 0.000 claims abstract description 8
- 239000000463 material Substances 0.000 claims abstract description 7
- 230000000007 visual effect Effects 0.000 claims abstract description 7
- 239000012780 transparent material Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 description 9
- 230000002265 prevention Effects 0.000 description 8
- 208000008918 voyeurism Diseases 0.000 description 8
- 238000010586 diagram Methods 0.000 description 6
- 239000003086 colorant Substances 0.000 description 4
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 244000144985 peep Species 0.000 description 3
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000010791 quenching Methods 0.000 description 2
- 230000000171 quenching effect Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/86—Arrangements for improving contrast, e.g. preventing reflection of ambient light
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/84—Passivation; Containers; Encapsulations
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/126—Shielding, e.g. light-blocking means over the TFTs
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Abstract
The invention discloses a display panel, a display device and electronic equipment, relates to the technical field of display, and mainly aims to solve the problems that the existing design only has peep-proof performance at the visual angle in the left and right directions of a display screen and does not have comprehensive peep-proof performance; the main technical scheme of the invention is as follows: a display panel comprises an array substrate, a first electrode layer, a light emitting layer, a second electrode layer and a cover plate which are sequentially stacked, wherein the second electrode layer is made of transparent or semitransparent materials; a plurality of shading strips are arranged on the inner surface and/or the outer surface of the cover plate; the light shielding strips are arranged along the width direction of the cover plate, the rest light shielding strips are arranged along the length direction of the cover plate, and the adjacent light shielding strips in the same direction are arranged at intervals and used for blocking emergent rays in the length direction and the width direction of the cover plate; the peep-proof function can be achieved in the length and width directions of the cover plate, namely the left and right directions and the front and back directions of the screen parallel to the actual product.
Description
Technical Field
The present invention relates to the field of display device manufacturing technologies, and in particular, to a display panel, a display device, and an electronic apparatus.
Background
At present, the society has more and more requirements on information confidentiality, so that a display screen with a peep-proof design is produced, and information displayed by the screen cannot be seen or acquired under a large visual angle; the OLED display device has the advantages of self-luminescence and wide viewing angle, so the anti-peeping design of the OLED is difficult. In the existing design, a shutter type peep-proof film is added on the surface of the screen perpendicular to the screen, so that the display screen has peep-proof performance at the left and right visual angles.
However, the conventional design as described above can have the peep-proof property only at the left and right viewing angles of the display screen, and has no peep-proof property at the up and down viewing angles of the vertical screen and the front and rear viewing angles of the parallel screen.
Disclosure of Invention
In view of the above, embodiments of the present invention provide a display panel, a display device and an electronic apparatus, and mainly aim to solve the problem that the conventional design only has the peep-proof property at the left and right viewing angles of the display screen and does not have the full peep-proof property.
In order to achieve the purpose, the invention mainly provides the following technical scheme:
in one aspect, an embodiment of the present invention provides a display panel, which includes an array substrate, a first electrode layer, a light emitting layer, a second electrode layer, and a cover plate, which are sequentially stacked, where the second electrode layer is made of a transparent or semitransparent material; wherein:
a plurality of shading strips are arranged on the inner surface and/or the outer surface of the cover plate;
and part of the shading strips are arranged along the width direction of the cover plate, the rest shading strips are arranged along the length direction of the cover plate, and the shading strips adjacent to each other in the same direction are arranged at intervals and used for blocking emergent rays in the length direction and the width direction of the cover plate.
The purpose and the technical problem to be solved can be further realized by adopting the following technical measures;
optionally, in the display panel, the light emitting layer includes a plurality of pixel units;
the inner surface and/or the outer surface of the cover plate are divided into a plurality of sub-areas corresponding to the plurality of pixel units, and a plurality of shading strips are arranged in each sub-area.
Optionally, in the display panel, each of the pixel units includes three sub-pixels, the light-shielding strips are disposed at intervals along the width/length direction of the cover plate corresponding to each of the sub-pixels, and the disposition directions of the light-shielding strips corresponding to the three sub-pixels in each of the pixel units are not completely the same.
Optionally, in the display panel, a plurality of through holes are formed in the first electrode layer or the second electrode layer, so as to reduce an area of the first electrode layer or the second electrode layer.
Optionally, in the display panel, the first electrode layer or the second electrode layer is divided into a plurality of first sub-electrodes or a plurality of second sub-electrodes corresponding to the plurality of sub-pixels;
and a plurality of strip-shaped through holes are formed in the first sub-electrode or the second sub-electrode at intervals along the width/length direction of the cover plate, and the orthographic projections of the strip-shaped through holes facing the array substrate fall in the orthographic projections of the shading strips facing the array substrate.
Optionally, in the display panel, distances between adjacent light-shielding bars in the same direction are equal;
the tangent value of the maximum visual angle of the display panel is the ratio of the distance from one side of the light-shielding strip, which is far away from the light-emitting layer, to the second electrode layer to the distance between the light-shielding strips adjacent to each other in the same direction.
Optionally, in the display panel, the light-shielding strip includes at least one sub light-shielding strip; or
The light-shielding strips comprise a plurality of sub light-shielding strips, a heightening layer is arranged between every two adjacent sub light-shielding strips, and the heightening layer is made of transparent materials.
Optionally, in the display panel, a distance between adjacent light-shielding bars along the width/length direction of the cover plate is greater than a size of the light-shielding bars in the width/length direction.
On the other hand, an embodiment of the present application provides a display device, which includes the display panel.
On the other hand, an embodiment of the present application provides an electronic device, which includes the above display device.
By the technical scheme, the display panel, the display device and the electronic equipment at least have the following advantages: in order to solve the problem that the display panel in the prior art only has peep-proof performance at the viewing angle in the left and right directions of the display screen and does not have comprehensive peep-proof performance, the display panel provided by the invention is characterized in that a plurality of light-shielding strips are arranged on the cover plate, part of the light-shielding strips are arranged at intervals along the width direction of the cover plate, and the rest of the light-shielding strips are arranged along the length direction of the cover plate, so that the display panel can simultaneously play a role in blocking emergent light in the length and width directions of the cover plate, namely the left and right directions and the front and back directions of an actual product parallel to the screen, and further play a role in peep-proof in the left and right directions and.
Drawings
Fig. 1 is a schematic structural diagram of a cover plate in a display panel according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a first electrode layer or a second electrode layer in a display panel according to an embodiment of the invention;
fig. 3 is a schematic structural diagram of a cover plate of a display panel according to an embodiment of the present invention, the cover plate being matched with a first electrode layer or a second electrode layer;
fig. 4 is a schematic structural diagram of another structure of a cover plate of a display panel according to an embodiment of the present invention, the cover plate being matched with a first electrode layer or a second electrode layer;
fig. 5 is a schematic structural diagram of a display panel according to an embodiment of the present invention, in which a cover plate is matched with a first electrode layer or a second electrode layer;
FIG. 6 is a schematic partial cross-sectional view taken along D-D of FIG. 3;
fig. 7 is a schematic diagram illustrating a maximum viewing angle of a display panel according to an embodiment of the present invention;
in the figure: the array substrate 1, the first electrode layer 2, the first sub-electrode 21, the strip-shaped through hole 22, the light-emitting layer 3, the second electrode layer 4, the cover plate 5, the light-shielding strip 6, the light-shielding strip 61 and the heightening layer 62.
Detailed Description
To further explain the technical means and effects of the present invention adopted to achieve the predetermined objects, the following detailed description will be given to the embodiments, structures, features and effects of the display panel, the display device and the electronic device according to the present invention with reference to the accompanying drawings and the preferred embodiments. In the following description, different "one embodiment" or "an embodiment" refers to not necessarily the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
In order to solve the technical problems, the embodiment of the invention has the following general idea:
example 1
Referring to fig. 1 and fig. 6, a display panel according to an embodiment of the present invention includes an array substrate 1, a first electrode layer 2, a light emitting layer 3, a second electrode layer 4, and a cover plate 5, which are sequentially stacked, where the second electrode layer 4 is made of a transparent or semitransparent material; a plurality of shading strips 6 are arranged on the inner surface and/or the outer surface of the cover plate 5;
and part of the light shielding strips 6 are arranged along the width direction of the cover plate 5, and the rest of the light shielding strips 6 are arranged along the length direction of the cover plate 5, are adjacent to the light shielding strips 6 in the same direction at intervals and are used for blocking emergent rays in the length direction and the width direction of the cover plate 5.
Specifically, in order to solve the problem that only can have peep-proof nature in the left and right directions visual angle of display screen in current design, do not have comprehensive peep-proof nature, the display panel that this embodiment provided is through set up a plurality of anti-dazzling screens 6 that set up along its width and length interval on the apron 5 for all have the anti-dazzling screen that blocks emergent ray on display panel's length and width direction, make length direction both sides, width direction both sides at display panel all can't see complete display content, and then played comparatively comprehensive peep-proof effect.
The array substrate 1 is a substrate provided with a completed switch tube or a TFT transistor layer; the first electrode layer 2 and the second electrode layer 4 are an anode layer and a cathode layer, respectively, and a cathode or an anode may be on the anode, and in the following description of the present embodiment, the first electrode layer 2 is taken as an anode to describe an example; the light-emitting layer 3 is an EL device light-emitting layer in an OLED display device, and in this embodiment, the pixel defining layer is also classified into the light-emitting layer 3; the cover plate 5 is a packaging cover plate; the above-mentioned contents can be easily understood and implemented by those skilled in the art, and can be obtained according to the prior art, and further not described herein in detail; the second electrode layer 4, that is, the cathode layer, is made of a transparent or semitransparent material, which means that the present disclosure is directed to an OLED display device in a top emission light emitting manner.
The shading strip 6 is made of black opaque material, so that the effect of blocking emergent light can be achieved; in this embodiment, some of the light-shielding strips 6 are disposed along the length direction of the cover plate 5 at intervals, and the rest of the light-shielding strips 6 are disposed along the width direction of the cover plate 5 at intervals, where the positions where the light-shielding strips 6 are disposed can be arbitrarily selected, as long as the light-shielding strips 6 are both disposed in the length direction and the width direction of the cover plate 5, for example: referring to fig. 1, the cover 5 may be divided into A, B, C regions, the light-shielding strips 6 in the a region are arranged along the length direction of the cover 5 (i.e., the left-right direction in the drawing), and the light-shielding strips 6 in the B, C region are arranged along the width direction of the cover 5 (i.e., the up-down direction in the drawing); the light-shielding strips 6 at A, B may be arranged along the longitudinal direction of the cover 5 (i.e., the left-right direction in the drawing), and the light-shielding strips 6 at the C region may be arranged along the width direction of the cover 5 (i.e., the up-down direction in the drawing); the light-shielding strips 6 in the a region may be arranged along the width direction of the cover 5 (i.e., the up-down direction in the drawing), the light-shielding strips 6 in the B, C region may be arranged along the longitudinal direction of the cover 5 (i.e., the left-right direction in the drawing), and the light-shielding strips 6 in the B, C region may extend to the a region to form a grid-like intersection.
The light-shielding strip 6 may be disposed on the inner surface of the cover plate 5 or on the outer surface of the cover plate 5, as long as the light-shielding strip blocks the emitted light on both sides of the display panel in the longitudinal direction and both sides of the display panel in the width direction according to the above-mentioned arrangement.
In order to ensure that the light-shielding bars 6 do not influence the brightness of the display panel too much, the distance between adjacent light-shielding bars 6 along the width/length direction of the cover plate 5 is set to be greater than the dimension of the light-shielding bars 6 in the width/length direction in the present embodiment; specifically, referring to fig. 6 and 7, the distance between the left and right adjacent light-shielding bars 6 in the drawing is greater than the dimension of the light-shielding bars 6 in the left and right directions in the drawing, so that the area shielded by the light-shielding bars 6 is smaller than the exposed area in the direction perpendicular to the display panel, thereby ensuring the brightness of the display panel.
According to the above list, in the display panel provided by the invention, the cover plate 5 is provided with the plurality of light-shielding strips 6, part of the light-shielding strips 6 are arranged at intervals along the width direction of the cover plate 5, and the rest of the light-shielding strips 6 are arranged along the length direction of the cover plate 5, so that the function of blocking emergent light can be simultaneously performed in the length direction and the width direction of the cover plate 5, namely the left and right directions and the front and back directions of an actual product parallel to a screen, and the function of peeping prevention can be further performed in the left and right directions and the front and back directions parallel to the screen.
The term "and/or" herein is merely an associative relationship describing an associated object, meaning that three relationships may exist, e.g., a and/or B, specifically understood as: both a and B may be included, a may be present alone, or B may be present alone, and any of the three cases can be provided.
Further, in a display panel provided by the embodiment of the present invention, in a specific implementation, the light emitting layer 3 includes a plurality of pixel units;
the inner surface and/or the outer surface of the cover plate 5 are divided into a plurality of sub-regions corresponding to the plurality of pixel units, and a plurality of light shading strips 6 are arranged in each sub-region.
Specifically, in order to accurately block emergent light of display content and play a role of accurate peep prevention, in this embodiment, the light-shielding strip 6 is arranged corresponding to the pixel unit; the light-emitting layer 3 including a plurality of pixel units is well known to those skilled in the art and will not be described herein; because the pixel units are the key for displaying the image, and the shading strips 6 are disposed on the cover plate 5 at the positions corresponding to the pixel units in this embodiment, the shading strip 6 corresponding to each pixel unit may be along the width direction of the cover plate 5, or along the length direction of the cover plate 5, or the shading strip 6 in one pixel unit is along the length direction of the cover plate 5, and the shading strip 6 in another pixel unit is along the width direction of the cover plate 5; for example: referring to fig. 1, the A, B, C regions of the cover 5 correspond to three pixel cells, respectively, and the light-shielding bars 6 thereon may be disposed in the manner shown in the drawing that the light-shielding bars 6 on the a region are disposed along the length direction of the cover 5 (i.e., the left-right direction in the drawing), the light-shielding bars 6 on the B, C region are disposed along the width direction of the cover 5 (i.e., the up-down direction in the drawing), or the light-shielding bars 6 on each A, B, C region may be disposed along the width direction of the cover 5 (i.e., the up-down direction in the drawing) and along the length direction of the cover 5 (i.e., the left-right direction in the drawing).
Further, in a specific implementation of the display panel provided in the embodiment of the present invention, each of the pixel units includes three sub-pixels, the light-shielding strips 6 are disposed at intervals along the width/length direction of the cover plate 5 corresponding to each of the sub-pixels, and the arrangement directions of the light-shielding strips 6 corresponding to the three sub-pixels in each of the pixel units are not completely the same.
Specifically, in order to accurately block the emergent light of the display content and play a role of accurate peep prevention, in the embodiment, the light-shielding strip 6 is arranged corresponding to each sub-pixel, each pixel unit comprises three sub-pixels representing three primary colors, namely a red sub-pixel R, a green sub-pixel G and a blue sub-pixel B, in the embodiment, the light-shielding strip 6 is arranged corresponding to each sub-pixel, and the blocking of the emergent light of each sub-pixel in the length or width direction of the cover plate 5 is performed on each sub-pixel, so that the loss of one or two of the three primary colors in the length or width direction of the cover plate is ensured, the picture is seriously distorted, and the aim of peep prevention is achieved; for example: referring to fig. 1, the A, B, C areas of the cover 5 correspond to G, R, B three sub-pixels in a pixel unit, and the light-shielding bars 6 thereon may be arranged as shown in the following figure: the light-shielding bars 6 in the region a (i.e., the sub-pixels representing green) are arranged along the length direction (i.e., the left-right direction in the figure) of the cover plate 5, so that green is distorted on both sides along the length direction of the display panel, a good display picture cannot be seen, and peeping is prevented in the length direction; on the other hand, the light-shielding bars 6 in the B, C (i.e. representing the red and blue sub-pixels) areas are arranged along the width direction (i.e. the up-down direction in the figure) of the cover 5, so that the red and blue colors are distorted on both sides along the width direction of the display panel, the good display picture cannot be seen, and peeping prevention is performed in the width direction; of course, the arrangement direction of the light-shielding bars 6 on the A, B, C corresponding area of each sub-pixel is not fixed, as long as three areas have the light-shielding bars 6 arranged along the width direction of the cover plate 5 and along the length of the cover plate 5 at the same time, and the arrangement modes of the light-shielding bars 6 corresponding to the three sub-pixels in each pixel unit are not completely the same; referring to fig. 1, in the same case, the light-shielding strips 6 at the positions corresponding to the areas representing the green sub-pixels a in each pixel unit are all arranged along the length direction (i.e., the left-right direction in the drawing) of the cover plate 5, and the light-shielding strips 6 at the positions corresponding to the areas representing the red and blue sub-pixels B, C in each pixel unit are all arranged along the width direction (i.e., the up-down direction in the drawing) of the cover plate 5; in different situations, the arrangement mode of the light-shielding strips 6 at the positions corresponding to the three sub-pixels in each pixel unit can be adjusted at will, as long as the light-shielding strips 6 arranged along the width direction of the cover plate 5 and along the length of the cover plate 5 are ensured at the positions corresponding to the three sub-pixels; preferably, the arrangement of the corresponding light-shielding bars 6 in each pixel unit is the same, so that the manufacturing process can be simplified.
Further, referring to fig. 2, in a specific implementation of the display panel provided in the embodiment of the present invention, through holes are provided on the first electrode layer 2 or the second electrode layer 4, so as to reduce an area of the first electrode layer 2 or the second electrode layer 4.
Specifically, since the OLED is a current-mode device, the higher the current is, the higher the density of carriers injected into the device is, the higher the density of excitons generated is; when the OLED has high brightness, the density of excitons in a light-emitting layer is increased due to the fact that the excitons generate more excitons, and the excitons collide with each other to cause exciton quenching, so that the light-emitting efficiency is reduced, and therefore the OLED has the serious problem of rapid reduction of the light-emitting efficiency under high brightness, namely the problem of efficiency roll-off; therefore, in order to improve the problem of efficiency roll-off, in this embodiment, the through holes are disposed on the first electrode layer 2 or the second electrode layer 4 to reduce the area of the first electrode layer 2 or the second electrode layer 4, so that excitons can be generated at the position of the light emitting layer 3 corresponding to the first electrode 2 or the second electrode 4, and the generated excitons can be expanded to the position of the light emitting layer 3 corresponding to the through holes to increase an exciton diffusion transmission area, reduce the density of excitons in the light emitting layer 3, and reduce the quenching probability of excitons, thereby improving the problem of efficiency roll-off of the display panel.
Among them, it is preferable to provide the through hole on the first electrode layer 2 (anode), because the hole injection and transport capability of the existing light-emitting layer 3 is greater than the electron injection and transport capability due to the characteristics of the organic material, and further the number of holes generated in the light-emitting layer 3 is far greater than the number of electrons, and the light-emitting efficiency is low; in order to improve the light emitting efficiency of the display panel, in this embodiment, the first electrode layer 2 (anode) is provided with a through hole, so that the area of the anode is reduced, the number of holes generated by the light emitting layer 3 in cooperation with the anode is reduced, the effect of balancing the number of holes and electrons is achieved, and the light emitting efficiency of the display panel is improved; of course, it is to be understood that: if the material of the light-emitting layer 3 can achieve a larger electron injection and transport capability than its hole injection and transport capability, the through holes can be provided on the second electrode layer 4, i.e. the cathode layer, and can also play the above-mentioned role of balancing the number of holes and electrons.
Further, referring to fig. 2 and fig. 3, in a specific implementation of the display panel provided in the embodiment of the present invention, the first electrode layer 2 or the second electrode layer 4 is divided into a plurality of first sub-electrodes 21 or a plurality of second sub-electrodes (the arrangement manner of the first sub-electrodes 21 is the same) corresponding to the plurality of sub-pixels;
a plurality of strip-shaped through holes 22 are formed in the first sub-electrode 21 or the second sub-electrode at intervals along the width/length direction of the cover plate 5, and the orthographic projection of the strip-shaped through holes 22 towards the array substrate 1 falls within the orthographic projection of the light shielding strip 6 towards the array substrate 1.
Specifically, in order to ensure the light-emitting efficiency of the display panel and efficiently improve the problem of efficiency roll-off in cooperation with the arrangement of the cover plate 5, in this embodiment, the first electrode layer 2 or the second electrode layer 4 is arranged as a hollow electrode with a strip-shaped through hole 22 in cooperation with the light-shielding strip 6; in this embodiment, the first electrode layer 2, i.e., the anode layer, is set as a hollow electrode, and if it is required to set the second electrode layer 4 as a hollow electrode, the setting manner is the same as that of the first electrode layer 2.
The first electrode layer 2 is divided into a plurality of first sub-electrodes 21 corresponding to a plurality of sub-pixels, as shown in fig. 2, in the figure, three first sub-electrodes 21 respectively correspond to R, G, B sub-pixels in a pixel unit; in order to cooperate with the arrangement mode of the light-shielding strips 6 at the positions corresponding to each sub-pixel on the cover plate 5 to achieve the effect of efficient light emission, in this embodiment, the strip-shaped through holes 21 on the three first sub-electrodes 21 are arranged at intervals along the width direction of the cover plate 5, and are also arranged at intervals along the length direction of the cover plate 5, so that the strip-shaped through holes 21 can correspond to the positions of the light-shielding strips 6, and thus the positions on the first electrode layer 2 where the strip-shaped through holes 22 are not arranged can perform normal light-emitting display, and the positions of the strip-shaped through holes 22 correspond to the positions of the light-shielding strips 6 and do not emit light, thereby not affecting the brightness of the display panel and achieving the purpose of reducing the area of the first electrode layer 2; for example: referring to the above and fig. 3, when the light-shielding bars 6 are disposed at intervals along the length direction (i.e. the left-right direction in the figure) of the cover plate 5 at the positions corresponding to the sub-pixels G representing green, the bar-shaped through holes 22 on the first sub-electrode 21 corresponding to the sub-pixels G of green are disposed at intervals along the length direction (i.e. the left-right direction in the figure) of the cover plate 5 corresponding to the light-shielding bars 6, and at this time, the green is distorted at two sides along the length direction of the display panel, so that the intact display screen cannot be seen, and peep-proof is performed in the length direction; on the contrary, when the light-shielding bars 6 are disposed at intervals along the width direction (i.e. the up-down direction in the figure) of the cover plate 5 at the positions corresponding to the red R and blue B sub-pixels, the bar-shaped through holes 22 on the first sub-electrodes 21 corresponding to the red R and blue B sub-pixels are disposed at intervals along the width direction (i.e. the up-down direction in the figure) of the cover plate 5 corresponding to the light-shielding bars 6, and at this time, the red and blue colors are distorted at both sides along the width direction of the display panel, so that the intact display screen cannot be seen, and peeping prevention is performed in the width direction; of course, it is to be understood that: referring to fig. 3, preferably, the light shielding strip 6 not only shields the strip-shaped through hole 22, but also shields the edge of the first sub-electrode 21 corresponding to each sub-pixel along the length/width of the cover plate 5, thereby ensuring privacy.
According to the different arrangement of the light-shielding strips 6, the arrangement of the strip-shaped through holes 22 on the first sub-electrode 21 also has various forms, for example: the above description can be easily implemented by those skilled in the art with reference to the forms shown in fig. 4 and 5, and will not be described in detail herein.
Further, referring to fig. 7, in a display device according to an embodiment of the present invention, in a specific implementation, distances between adjacent light-shielding bars 6 in the same direction are equal;
the tangent value of the maximum visual angle of the display panel is the ratio of the distance from the side of the light-shielding strip 6 departing from the light-emitting layer 3 to the second electrode layer 4 to the distance between the light-shielding strips adjacent to each other in the same direction.
Specifically, the maximum viewing angle of the display panel provided in this embodiment depends on the distance from the side of the light-shielding bars 6 away from the light-emitting layer 3 to the second electrode layer 4 and the distance between the light-shielding bars adjacent to each other in the same direction, wherein when the distance between the adjacent light-shielding bars 6 is fixed, the larger the distance from the side of the light-shielding bars 6 away from the light-emitting layer 3 to the second electrode layer 4 is, the smaller the viewing angle of the display panel provided in this embodiment is, the better the anti-peeping effect is; for example: referring to fig. 7, a schematic cross-sectional view of a display panel corresponding to a certain first sub-electrode 21 is shown, when the distance between the adjacent light-shielding bars 6 is fixed to 10um, the distance from the side of the light-shielding bar 6 departing from the light-emitting layer 3 to the second electrode layer 4 includes the thickness of the light-shielding bar 6 and the distance from the light-shielding bar 6 to the second electrode layer 4, at this time, the thickness of the light-shielding bar 6 is set to 6um, the distance from the light-shielding bar 6 to the second electrode layer 4 is set to 4um, and then the tangent value of the maximum viewing angle of the display panel provided in this embodiment is 10: 10, the maximum viewing angle is 45 degrees, that is, only when the viewing angle in the width or length direction of the display panel is less than or equal to 45 degrees, the display content can be seen, otherwise, the display content cannot be seen, it can be understood that, in order to improve the peeping prevention effect, the maximum viewing angle of the display panel provided in this embodiment can be adjusted by adjusting the data, and then the peeping prevention effect can be adjusted.
Further, referring to fig. 6 and fig. 7, in a display panel according to an embodiment of the present invention, in a specific implementation, the light-shielding strip 6 includes at least one sub light-shielding strip 61; or
The light-shielding strip 6 comprises a plurality of sub light-shielding strips 61, a heightening layer 62 is arranged between every two adjacent sub light-shielding strips 61, and the heightening layer 62 is made of a transparent material.
Specifically, in order to realize that the light-shielding strip 6 has a certain thickness to match with the adjustment of the maximum viewing angle of the display panel, in this embodiment, the light-shielding strip 6 may be configured to include at least one sub-light-shielding strip 61, and the sub-light-shielding strip 61 itself should have a preset thickness; however, for the sub light-shielding bars 61, the strip-shaped structure has a larger thickness, which makes the manufacturing process more difficult, and therefore in order to reduce the process difficulty, in this embodiment, the purpose of increasing the thickness is achieved by spacing the plurality of sub light-shielding bars 61 by the height-increasing layer 62, and the height-increasing layer 62 is a transparent material of the same flat layer, wherein the flat layer is a structure known to those skilled in the art, and therefore the technical solution of the present application does not improve or innovate the structure, and therefore, the details are not described here.
Example 2
Further, an embodiment of the present application provides a display device, which includes the display panel.
The specific structure and the peep-proof principle of the display panel described in embodiment 1 are described in detail with reference to the above-mentioned detailed description of embodiment 1, and are not described herein again.
Example 3
Further, an embodiment of the present application provides an electronic device, which includes the display device.
The specific structure and the peep-proof principle of the display device described in embodiment 2 refer to the detailed description of embodiment 1 and embodiment 2, which is not described herein again.
It should be noted that the above-mentioned embodiments are only preferred embodiments of the present invention, and the present invention is not limited in any way, so that the above-mentioned embodiments can be combined, and any simple modification, equivalent change and modification made to the above-mentioned embodiments according to the technical spirit of the present invention still fall within the scope of the technical solution of the present invention.
Claims (10)
1. A display panel comprises an array substrate, a first electrode layer, a light emitting layer, a second electrode layer and a cover plate which are sequentially stacked, wherein the second electrode layer is made of transparent or semitransparent materials; the method is characterized in that:
a plurality of shading strips are arranged on the inner surface and/or the outer surface of the cover plate;
and part of the shading strips are arranged along the width direction of the cover plate, the rest shading strips are arranged along the length direction of the cover plate, and the shading strips adjacent to each other in the same direction are arranged at intervals and used for blocking emergent rays in the length direction and the width direction of the cover plate.
2. The display panel according to claim 1, characterized in that:
the light-emitting layer comprises a plurality of pixel units;
the inner surface and/or the outer surface of the cover plate are divided into a plurality of sub-areas corresponding to the plurality of pixel units, and a plurality of shading strips are arranged in each sub-area.
3. The display panel according to claim 2, characterized in that:
each pixel unit comprises three sub-pixels, the plurality of light shielding strips are arranged at intervals along the width/length direction of the cover plate corresponding to each sub-pixel, and the arrangement directions of the light shielding strips corresponding to the three sub-pixels in each pixel unit are not identical.
4. The display panel according to claim 3, wherein:
and the first electrode layer or the second electrode layer is provided with a plurality of through holes for reducing the area of the first electrode layer or the second electrode layer.
5. The display panel according to claim 4, wherein:
the first electrode layer or the second electrode layer is divided into a plurality of first sub-electrodes or a plurality of second sub-electrodes corresponding to the plurality of sub-pixels;
and a plurality of strip-shaped through holes are formed in the first sub-electrode or the second sub-electrode at intervals along the width/length direction of the cover plate, and the orthographic projections of the strip-shaped through holes facing the array substrate fall in the orthographic projections of the shading strips facing the array substrate.
6. The display panel according to claim 1, characterized in that:
the distances between the adjacent shading strips in the same direction are equal;
the tangent value of the maximum visual angle of the display panel is the ratio of the distance from one side of the light-shielding strip, which is far away from the light-emitting layer, to the second electrode layer to the distance between the light-shielding strips adjacent to each other in the same direction.
7. The display panel according to claim 6, wherein:
the shading strip comprises at least one sub shading strip; or
The light-shielding strips comprise a plurality of sub light-shielding strips, a heightening layer is arranged between every two adjacent sub light-shielding strips, and the heightening layer is made of transparent materials.
8. The display panel according to claim 1, characterized in that:
the distance between the adjacent light shielding strips along the width/length direction of the cover plate is larger than the size of the light shielding strips in the width/length direction.
9. A display device, characterized in that it comprises:
the display panel of claims 1-8.
10. An electronic device, comprising:
the display device of claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202010766687.5A CN111740031A (en) | 2020-08-03 | 2020-08-03 | Display panel, display device and electronic equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010766687.5A CN111740031A (en) | 2020-08-03 | 2020-08-03 | Display panel, display device and electronic equipment |
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| CN111740031A true CN111740031A (en) | 2020-10-02 |
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| CN202010766687.5A Pending CN111740031A (en) | 2020-08-03 | 2020-08-03 | Display panel, display device and electronic equipment |
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