CN114236891A - Display panel, driving method thereof and display device - Google Patents
Display panel, driving method thereof and display device Download PDFInfo
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- CN114236891A CN114236891A CN202210112467.XA CN202210112467A CN114236891A CN 114236891 A CN114236891 A CN 114236891A CN 202210112467 A CN202210112467 A CN 202210112467A CN 114236891 A CN114236891 A CN 114236891A
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/1323—Arrangements for providing a switchable viewing angle
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133509—Filters, e.g. light shielding masks
- G02F1/133514—Colour filters
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
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Abstract
The invention provides a display panel and a display device, relates to the technical field of display, and is used for enabling the display panel to have a large-view-angle peep-proof function. The peep-proof display area of the display panel comprises a first peep-proof color resistance layer and a second peep-proof color resistance layer; the first peep-proof color resistance layer and the second peep-proof color resistance layer respectively comprise a first color resistance unit and a second color resistance unit which are arranged along a second direction; along a first direction, at least partially overlapping a first color resistance unit in a first peep-proof color resistance layer and a second color resistance unit in a second peep-proof color resistance layer, and at least partially overlapping a second color resistance unit in the first peep-proof color resistance layer and a first color resistance unit in the second peep-proof color resistance layer; along a preset direction, at least part of a first color resistance unit in the first peep-proof color resistance layer and at least part of a first color resistance unit in the second peep-proof color resistance layer are overlapped, and at least part of a second color resistance unit in the first peep-proof color resistance layer and at least part of a second color resistance unit in the second peep-proof color resistance layer are overlapped; the preset direction intersects with the first direction.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the technical field of display, in particular to a display panel, a driving method thereof and a display device.
[ background of the invention ]
With the popularization of electronic products and the increase in privacy importance of the public, when a user uses an electronic product such as a mobile phone or a notebook computer in a public place such as a library or a coffee shop, the content displayed by the electronic product is desired to be visible only within a certain viewing angle range so as to be prevented from being seen by others except the user himself, that is, the electronic product is desired to have a large-viewing-angle peep-proof function.
[ summary of the invention ]
The embodiment of the invention provides a display panel, a driving method thereof and a display device, which are used for enabling the display panel to have a large-view-angle peep-proof function.
In one aspect, an embodiment of the present invention provides a display panel, including:
the anti-peeping display area comprises anti-peeping pixels, a first anti-peeping color resistance layer and a second anti-peeping color resistance layer, wherein the first anti-peeping color resistance layer and the second anti-peeping color resistance layer are arranged along a first direction, and the first direction is vertical to the plane of the display panel;
the first peep-proof color resistance layer and the second peep-proof color resistance layer respectively comprise a first color resistance unit and a second color resistance unit which are arranged along a second direction, and the second direction is parallel to the plane of the display panel; along the first direction, the first color resistance unit in the first peep-proof color resistance layer and the second color resistance unit in the second peep-proof color resistance layer are at least partially overlapped, and the second color resistance unit in the first peep-proof color resistance layer and the first color resistance unit in the second peep-proof color resistance layer are at least partially overlapped; along a preset direction, at least part of the first color resistance unit in the first peep-proof color resistance layer and at least part of the first color resistance unit in the second peep-proof color resistance layer are overlapped, and at least part of the second color resistance unit in the first peep-proof color resistance layer and at least part of the second color resistance unit in the second peep-proof color resistance layer are overlapped; the preset direction intersects the first direction.
On the other hand, an embodiment of the present invention provides a driving method applied to the display panel, where the display panel includes a peep-proof mode;
the driving method includes:
and controlling the peep-proof pixels to be lightened in the peep-proof mode.
In still another aspect, an embodiment of the present invention provides a display device, including the display panel as described above.
According to the display panel and the display device provided by the embodiment of the invention, the peep-proof display area is arranged in the display panel, the peep-proof pixels, the first peep-proof color resistance layer and the second peep-proof color resistance layer are arranged in the peep-proof display area, so that the color resistance units with the same light-emitting color in the first peep-proof color resistance layer and the second peep-proof color resistance layer are at least partially overlapped in the preset direction, when the peep-proof pixels are lightened, light rays emitted by the peep-proof pixels and transmitted along the preset direction can be emitted out through the first peep-proof color resistance layer and the second peep-proof color resistance layer in sequence, the light rays emitted by the peep-proof pixels form interference on the light rays emitted by the display pixels, a user with the sight line direction parallel to the preset direction cannot see the display picture of the display panel, and the peep-proof effect under a large visual angle corresponding to the preset direction is realized. Meanwhile, in the embodiment of the invention, the color resistance units with different emergent colors in the first peep-proof color resistance layer and the second peep-proof color resistance layer are at least partially overlapped in the first direction, when the peep-proof pixels are lightened, light rays emitted by the peep-proof pixels and transmitted along the first direction cannot be emitted through the first peep-proof color resistance layer and the second peep-proof color resistance layer, and the emitted light rays of the display pixels can be free from interference, so that a user with a sight line direction parallel to the first direction can clearly see a display picture of the display panel while large-visual-angle peep prevention corresponding to the preset direction is realized, and the display effect under a normal visual angle corresponding to the first direction is not influenced while the large-visual-angle peep prevention is realized.
[ description of the drawings ]
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is an enlarged schematic view of a partial area of a display panel according to an embodiment of the present invention;
fig. 2 is a schematic cross-sectional view of a peep-proof display area of a display panel according to an embodiment of the present invention;
fig. 3 is a schematic cross-sectional view of a peep-proof display area of another display panel according to an embodiment of the present invention;
fig. 4 is a graph of transmittance spectra of a first color resistance unit and a second color resistance unit according to an embodiment of the invention;
fig. 5 is a schematic cross-sectional view of a peep-proof display area of another display panel according to an embodiment of the present invention;
fig. 6 is a schematic cross-sectional view of a peep-proof display area of another display panel according to an embodiment of the present invention;
FIG. 7 is a schematic cross-sectional view illustrating a normal display area of a display panel according to an embodiment of the present invention;
fig. 8 is a schematic cross-sectional view of a display panel according to an embodiment of the invention;
fig. 9 is a schematic diagram of a display device according to an embodiment of the invention.
[ detailed description ] embodiments
For better understanding of the technical solutions of the present invention, the following detailed descriptions of the embodiments of the present invention are provided with reference to the accompanying drawings.
It should be understood that the described embodiments are only some embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the examples of the present invention and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
It should be understood that although the terms first, second, etc. may be used in describing the privacy color-blocking layers in embodiments of the present invention, these privacy color-blocking layers should not be limited to these terms. These terms are only used to distinguish the individual privacy color barrier layers from one another. For example, the first privacy protecting color-resist layer may also be referred to as a second privacy protecting color-resist layer, and similarly, the second privacy protecting color-resist layer may also be referred to as a first privacy protecting color-resist layer without departing from the scope of the embodiments of the present invention.
An embodiment of the present invention provides a display panel, as shown in fig. 1 and fig. 2, fig. 1 is an enlarged schematic view of a partial region of the display panel provided in the embodiment of the present invention, and fig. 2 is a schematic cross-sectional view of a peep-proof display area of the display panel provided in the embodiment of the present invention, where the display panel includes a peep-proof display area a1 and a normal display area a 2. The peep-proof display region a1 includes peep-proof pixels P1. The normal display area a2 includes display pixels P2. Illustratively, in the embodiment of the present invention, the display pixel P2 and the peep prevention pixel P1 may operate independently of each other.
As shown in fig. 2, the peep-proof display area a1 further includes at least a first peep-proof color barrier layer 11 and a second peep-proof color barrier layer 12. The first anti-peeping color barrier layer 11 and the second anti-peeping color barrier layer 12 are arranged along a first direction h1, and the first direction h1 is perpendicular to the plane of the display panel. The first direction h1 corresponds to a front viewing angle of the display panel. The first peep-proof color barrier layer 11 and the second peep-proof color barrier layer 12 both include a first color barrier unit 100 and a second color barrier unit 200 arranged along a second direction h2, and the second direction h2 is parallel to the plane of the display panel. That is, the first direction h1 and the second direction h2 are perpendicular to each other.
When the display panel is put into use, the light-emitting side of the display panel can be arranged on the side of the second peep-proof color resistance layer 12 away from the first peep-proof color resistance layer 11, that is, the user is positioned on the side of the second peep-proof color resistance layer 12 away from the first peep-proof color resistance layer to view the display picture of the display panel.
When the light exit side of the display panel is disposed on the side of the second peep-proof color barrier layer 12 away from the first peep-proof color barrier layer 11, for example, as shown in fig. 2, in the embodiment of the present invention, the peep-proof pixel P1 may be disposed on the side of the first peep-proof color barrier layer 11 away from the second peep-proof color barrier layer 12, and light emitted from the peep-proof pixel P1 can be emitted to the second peep-proof color barrier layer 12 through the first peep-proof color barrier layer 11, and is emitted out of the display panel through the second peep-proof color barrier layer 12.
In the embodiment of the present invention, along the preset direction h3 different from the first direction h1, the color resistance units with the same light color in the first peep-proof color resistance layer 11 and the second peep-proof color resistance layer 12 at least partially overlap. Illustratively, as shown in fig. 2, along the preset direction h3, at least a part of the positions of the first color-resisting units 100 in the first peep-proof color-resisting layer 11 overlaps with the first color-resisting units 100 in the second peep-proof color-resisting layer 12, and at least a part of the positions of the second color-resisting units 200 in the first peep-proof color-resisting layer 11 overlaps with the second color-resisting units 200 in the second peep-proof color-resisting layer 12. In the embodiment of the present invention, the preset direction h3 intersects the first direction h 1. Illustratively, the preset direction h3 may also intersect the second direction h 2. The predetermined direction h3 corresponds to a large viewing angle of the display panel.
The operation mode of the display panel includes a peep-proof mode. When the display panel is operated in the privacy mode, the privacy pixel P1 is controlled to be turned on in addition to the display pixel P2. When a user views the display panel in a line-of-sight direction parallel to the preset direction h3, as shown in fig. 2, after the light emitted by the peep-proof pixel P1 and propagating along the preset direction h3 is emitted to the first peep-proof color-resisting layer 11, a part of the light is emitted through the first color-resisting unit 100 in the first peep-proof color-resisting layer 11, and another part of the light is emitted through the second color-resisting unit 200 in the first peep-proof color-resisting layer 11. The light then continues to propagate toward the second privacy mask layer 12. Since at least a portion of the first color-resisting unit 100 in the first peep-proof color-resisting layer 11 overlaps with the first color-resisting unit 100 in the second peep-proof color-resisting layer 12 in the preset direction h3, the light emitted through the first color-resisting unit 100 in the first peep-proof color-resisting layer 11 can continue to be emitted through the first color-resisting unit 100 in the second peep-proof color-resisting layer 12, and the color of the emitted light is the first color allowed to be transmitted by the first color-resisting unit 100. Similarly, the light emitted through the second color resist unit 200 in the first peep-proof color resist layer 11 can continue to pass through the second color resist unit 200 in the second peep-proof color resist layer 12, and the color of the emitted light is the second color allowed to pass through by the second color resist unit 200. It can be seen that when the line of sight of the user viewing the display panel is parallel to the preset direction h3, the light emitted by the peep-proof pixel P1 can exit from the second peep-proof color resist layer 12. When the line of sight of the user viewing the display panel is parallel to the preset direction h3, the light emitted through the peep-proof display area a1 includes light of the first color and light of the second color. The light can interfere the light emitted by the display pixel P2, so that the user can observe a blurred picture, thereby achieving the anti-peeping effect at a large viewing angle corresponding to the preset direction h 3.
In the embodiment of the present invention, along the first direction h1, the color resistance units with different light-emitting colors in the first peep-proof color resistance layer 11 and the second peep-proof color resistance layer 12 at least partially overlap. Illustratively, with continued reference to fig. 2, along the first direction h1, at least a portion of the positions of the first color resist units 100 in the first peep-proof color resist layer 11 overlaps with the second color resist units 200 in the second peep-proof color resist layer 12, and at least a portion of the positions of the second color resist units 200 in the first peep-proof color resist layer 11 overlaps with the first color resist units 100 in the second peep-proof color resist layer 12.
When the display panel is operated in the peep-proof mode, the peep-proof pixel P1 is turned on. When a user views the display panel in a line-of-sight direction parallel to the first direction h1, as shown in fig. 2, after the light emitted from the peep-proof pixel P1 and propagating along the first direction h1 strikes the first peep-proof color-resisting layer 11, a part of the light exits through the first color-resisting units 100 in the first peep-proof color-resisting layer 11, and another part of the light exits through the second color-resisting units 200 in the first peep-proof color-resisting layer 11. The light then continues to propagate toward the second privacy mask layer 12. Since at least a portion of the first color-resisting units 100 in the first peep-proof color-resisting layer 11 overlaps with the second color-resisting units 200 in the second peep-proof color-resisting layer 12 along the first direction h1, the light emitted through the first color-resisting units 100 in the first peep-proof color-resisting layer 11 cannot continue to be emitted through the second color-resisting units 200 in the second peep-proof color-resisting layer 12. Similarly, the light emitted through the second color resist unit 200 in the first peep-proof color resist layer 11 cannot be emitted through the first color resist unit 100 in the second peep-proof color resist layer 12. It can be seen that when the line of sight of the user viewing the display panel is parallel to the first direction h1, the light emitted from the peep-proof pixel P1 will not be emitted from the second peep-proof color resist layer 12. Therefore, the light emitted from the display pixel P2 can be emitted to the eyes of the user without being interfered by the peep-preventing pixel P1, so that the user can observe a clear picture, thereby realizing normal display at a normal viewing angle corresponding to the first direction h 1.
Illustratively, the operation mode of the display panel may further include a sharing mode. When the display panel is operated in the sharing mode, the display pixel P2 is controlled to be turned on, and the privacy pixel P1 is controlled not to be turned on. In this way, no matter the user views the display panel in the viewing direction parallel to the preset direction h3 or in the viewing direction parallel to the first direction h1, the light emitted by the display pixel P2 can propagate to the human eye without interference, so that the user can see a clear display picture.
As can be seen from the above analysis, the display panel provided in the embodiment of the present invention, by providing the peep-proof display area a1 in the display panel, and a peep-proof pixel P1, a first peep-proof color barrier layer 11 and a second peep-proof color barrier layer 12 are arranged in the peep-proof display area A1, so that color barrier units with the same light-emitting color in the first peep-proof color barrier layer 11 and the second peep-proof color barrier layer 12 are at least partially overlapped in a preset direction h3, when the peep-proof pixel P1 is lit, the light emitted by the peep-proof pixel P1 and propagating along the preset direction h3 can sequentially pass through the first peep-proof color barrier layer 11 and the second peep-proof color barrier layer 12 to be emitted, so that the light emitted by the peep-proof pixel P1 interferes with the light emitted by the display pixel P2, therefore, the user whose sight line direction is parallel to the preset direction h3 cannot see the display picture of the display panel clearly, and the peep-proof effect under a large viewing angle corresponding to the preset direction h3 is achieved. Meanwhile, in the embodiment of the present invention, color barrier units with different light-emitting colors in the first privacy protection color barrier layer 11 and the second privacy protection color barrier layer 12 are at least partially overlapped in the first direction h1, so that when the privacy protection pixel P1 is turned on, light emitted by the privacy protection pixel P1 and transmitted along the first direction h1 cannot exit through the first privacy protection color barrier layer 11 and the second privacy protection color barrier layer 12, and light exiting from the display pixel P2 can be free from interference, so that a user whose sight line is parallel to the first direction h1 can clearly see a display picture of the display panel, and when large-view privacy protection is implemented, it is ensured that a display effect at a front view angle corresponding to the first direction h1 is not affected.
It should be noted that, as shown in fig. 2, in the preset direction h3, the first color resistance unit 100 in the first peep-proof color resistance layer 11 and the second color resistance unit 200 in the second peep-proof color resistance layer 12 are partially overlapped, and the second color resistance unit 200 in the first peep-proof color resistance layer 11 and the second color resistance unit 200 in the second peep-proof color resistance layer 12 are partially overlapped; and in the first direction h1, the first color resistance unit 100 in the first peep-proof color resistance layer 11 and the second color resistance unit 200 in the second peep-proof color resistance layer 12 are partially overlapped, and the second color resistance unit 200 in the first peep-proof color resistance layer 11 and the first color resistance unit 100 in the second peep-proof color resistance layer 12 are partially overlapped.
Illustratively, as shown in fig. 2, the first color resistance unit 100 in the first peep-proof color resistance layer 11 includes a first portion 101 and a second portion 102, and along the first direction h1, the first portion 101 overlaps with the second color resistance unit 200 in the second peep-proof color resistance layer 12, and the second portion 102 does not overlap with the second color resistance unit 200 in the second peep-proof color resistance layer 12. The second color resistance unit 200 in the first privacy protecting color resistance layer 11 includes a third portion 201 and a fourth portion 202, and along the first direction h1, the third portion 201 overlaps with the first color resistance unit 100 in the second privacy protecting color resistance layer 12, and the fourth portion 202 does not overlap with the first color resistance unit 100 in the second privacy protecting color resistance layer 12. In the embodiment of the present invention, the area of the first portion 101 is larger than that of the second portion 102, and the area of the third portion 201 is larger than that of the fourth portion 202. With this arrangement, the display panel can be ensured to have a better display effect at a front viewing angle corresponding to the first direction h 1.
Alternatively, as shown in fig. 3, fig. 3 is a schematic cross-sectional view of a peep-proof display area of another display panel provided in the embodiment of the present invention, in the preset direction h3, in the embodiment of the present invention, any position of the first color resistance unit 100 in the first peep-proof color resistance layer 11 can be overlapped with the second color resistance unit 200 in the second peep-proof color resistance layer 12, and, any position of the second color resistance unit 200 in the first peep-proof color resistance layer 11 is overlapped with the second color resistance unit 200 in the second peep-proof color resistance layer 12, and, in the first direction h1, any position of the first color resistance unit 100 in the first peep-proof color resistance layer 11 is overlapped with the second color resistance unit 200 in the second peep-proof color resistance layer 12, and overlapping any position of the second color resistance unit 200 in the first peep-proof color resistance layer 11 with the first color resistance unit 100 in the second peep-proof color resistance layer 12. According to the arrangement, the large-visual-angle peeping-proof effect can be optimal, and meanwhile, the optimal display effect under the positive visual angle can be ensured.
For example, in the embodiment of the present invention, the area of the first color resistance unit 100 in the first peep-proof color resistance layer 11 is smaller than or equal to the area of the second color resistance unit 200 in the second peep-proof color resistance layer 12, the area of the second color resistance unit 200 in the first peep-proof color resistance layer 11 is smaller than or equal to the area of the first color resistance unit 100 in the second peep-proof color resistance layer 12, and the orthographic projection of the first color resistance unit 100 in the first peep-proof color resistance layer 11 on the plane where the second peep-proof color resistance layer 12 is located falls into the area where the second color resistance unit 200 in the second peep-proof color resistance layer 12 is located, so that any position of the first color resistance unit 100 in the first peep-proof color resistance layer 11 and the second color resistance unit 200 in the second peep-proof color resistance layer 12 are overlapped in the first direction h 1. Similarly, in the embodiment of the present invention, the orthographic projection of the second color resistance unit 200 in the first peep-proof color resistance layer 11 on the plane where the second peep-proof color resistance layer 12 is located may fall into the area where the first color resistance unit 100 in the second peep-proof color resistance layer 12 is located, so that any position of the second color resistance unit 200 in the first peep-proof color resistance layer 11 and the first color resistance unit 100 in the second peep-proof color resistance layer 12 are overlapped in the first direction h1, so as to ensure that, in the peep-proof mode, none of the light emitted from the peep-proof pixel P1 in the first direction h1 is emitted through the first peep-proof color resistance layer 11 and the second peep-proof color resistance layer 12, ensure that the light emitted from the display pixel P2 is not interfered by the peep-proof pixel P1, and that, in the peep-proof mode, a user can observe the display panel in the first direction h1, and ensure a clear visual angle effect in the front view.
It should be noted that the arrangement and the area of the peep-proof pixel P1 and the display pixel P2 shown in fig. 1 are only schematic, and the arrangement and/or the area of the peep-proof pixel P1 and the display pixel P2 can be adjusted according to different design requirements, which is not limited in the embodiment of the present invention.
Alternatively, the preset direction h3 may be set according to a desired viewing angle range of the display panel. For example, the angle between the preset direction h3 and the first direction h1 may be greater than or equal to 30 °.
It should be noted that, in the embodiment of the present invention, the preset direction may include a plurality of different directions. The set of the plurality of preset directions h3 constitutes the peep-proof viewing angle range of the display panel provided by the embodiment of the invention. When the sight direction of the user is located at any position within the peep-proof visual angle range, the user cannot clearly see the display picture of the display panel, and effective peep-proof can be realized. Fig. 2 and 3 illustrate the preset directions h3 including the first preset direction h31 and the second preset direction h 32. The first predetermined direction h31 and the second predetermined direction h32 intersect with each other.
For example, as shown in fig. 4, fig. 4 is a graph of transmittance spectra of a first color resistance unit and a second color resistance unit provided in the embodiment of the present invention, the first color resistance unit 100 has a first transmittance spectrum curve C1, and the second color resistance unit 200 has a second transmittance spectrum curve C2. The integral area of the first transmittance spectrum curve C1 between the wavelength λ 11 and the wavelength λ 12 is S1, wherein the transmittance of the first color resistance unit 100 between the wavelength λ 11 and the wavelength λ 12 is greater than or equal to a first preset value. An integrated area of the second transmittance spectrum C2 between the wavelength λ 21 and the wavelength λ 22 is S2, wherein the transmittance of the second color resistance unit 200 between the wavelength λ 21 and the wavelength λ 22 is greater than or equal to a second preset value. The integral area of the overlapping region of the first transmittance spectrum curve C1 and the second transmittance spectrum curve C2 is S. In the embodiment of the invention, S/S1 is less than or equal to 10 percent; and/or S/S2 is less than or equal to 10 percent. So set up, can make the overlap range of the transmissivity spectral curve of first color resistance unit 100 and second color resistance unit 200 little enough, make most light that sees through first color resistance unit 100 all can be blockked and can't see through by second color resistance unit 200, when user's sight direction is parallel with first direction h1, can guarantee that the light that peep-proof pixel P1 sent can not pass through first peep-proof look and hinder layer 11 and second peep-proof look and hinder layer 12, the light that avoids showing pixel P2 and sends receives the interference of peep-proof pixel P1, guarantee that the user can watch the clear picture of participating in the demonstration by display pixel P2.
Optionally, the first preset value and the second preset value may be selected according to different design requirements, for example, both the first preset value and the second preset value may be 0.
Illustratively, the first color resistor unit 100 includes a red color resistor, and the second color resistor unit 200 includes a green color resistor. Alternatively, when the first color resistance unit 100 is set as a red color resistance, the second color resistance unit 200 may further include a blue color resistance.
Exemplarily, as shown in fig. 5, fig. 5 is a schematic cross-sectional view of a peep-proof display region of a display panel according to another embodiment of the present invention, the first peep-proof color barrier layer 11 further includes a first black matrix 41, and the first black matrix 41 includes a plurality of openings 410. The first color resistance unit 100 and the second color resistance unit 200 in the first peep-proof color resistance layer 11 are respectively located in different openings 410. When the display panel is manufactured, the whole black matrix layer is formed, the black matrix layer is etched to form the opening 410, and the first color resistance unit 100 and the second color resistance unit 200 are manufactured in different openings 410.
As shown in fig. 5, along the first direction h1, the first black matrix 41 at least partially overlaps the first color resistance unit 100 and the second color resistance unit 200 in the second peep-proof color resistance layer 12, respectively. With this arrangement, part of the light emitted from the peep-proof pixel P1 and propagating along the first direction h1 can be absorbed after passing through the first black matrix 41 and cannot be emitted from the first peep-proof color resist layer 11, so that it can be ensured that the part of the light cannot be emitted through the second peep-proof color resist layer 12. By adopting the arrangement mode, the requirement on the alignment precision of the first peep-proof color barrier layer 11 and the second peep-proof color barrier layer 12 can be reduced while ensuring that the light transmitted along the first direction h1 and emitted by the peep-proof pixel P1 can not cause interference to the display pixel P2 after being emitted through the second peep-proof color barrier layer 12, so that the process difficulty of the display panel can be reduced, and the process efficiency can be improved.
Illustratively, as shown in fig. 5, in the first direction H1, a distance H is provided between the first peep-proof color barrier layer 11 and the second peep-proof color barrier layer 12; the shortest distance between two adjacent openings 410 in the first black matrix 41 is W1The width of the first color resist unit 100 in the first anti-peeping color resist layer 11 is W21The width of the second color resist unit 200 in the first anti-peeping color resist layer 11 is W22The width direction of the first color resistance unit 100 and the width direction of the second color resistance unit 200 are both parallel to the plane of the display panel. Wherein:
(W21+W22+1.5W1)/tanθmax≤H≤W1/2tanθmin (1)
wherein, thetaminIs the minimum angle between the predetermined direction h3 and the first direction h1, thetamaxIs the maximum included angle between the preset direction h3 and the first direction h 1. Tan θ, as shown in FIG. 5min＝W1/2H；tanθmax＝(W21+W22+1.5W1)/H。
In designing the display panel, the peep-proof viewing angle range may be first set, and then the size parameters of the first color resist unit 100, the second color resist unit 200 and the first black matrix 41 in the first peep-proof color resist layer 11 may be determined according to formula (1), and the distance H between the first peep-proof color resist layer 11 and the second peep-proof color resist layer 12 may be determined.
For example, in the embodiment of the present invention, the first color resistance unit 100 and the second color resistance unit 200 in the first peep-proof color resistance layer 11 may have the same width. I.e. let W21＝W22。
For example, as shown in fig. 2, 3 and 5, in the second peep-proof color-resisting layer 12, the first color-resisting unit 100 and the second color-resisting unit 200 may have the same shape and area. With such an arrangement, in the preparation process of the display panel, the same mask can be adopted to form the first color resistance unit 100 and the second color resistance unit 200 in the second peep-proof color resistance layer 12 respectively through translation, which is beneficial to reducing the process cost of the display panel. In the embodiment of the present invention, the hollow portion of the mask may be aligned with the region of the display panel where the first color resist unit 100 is to be formed, the mask may be translated after the material of the first color resist unit 100 is formed in the set region, so that the hollow portion of the mask is aligned with the region of the display panel where the second color resist unit 200 is to be formed, and the material of the second color resist unit 200 is formed in the set region through the hollow portion.
For example, when the first peep-proof color resist layer 11 and the second peep-proof color resist layer 12 are provided, as shown in fig. 2, 3 and 5, in the first peep-proof color resist layer 11, the first color resist units 100 and the second color resist units 200 may be alternately provided according to the embodiment of the present invention. In the second peep-proof color-resisting layer 12, the first color-resisting units 100 and the second color-resisting units 200 may be alternately arranged in the embodiment of the invention. When the display panel is enabled to be in the peep-proof mode, the peep-proof display area A1 can emit light with two different colors along the preset direction h3, so that the peep-proof display area A1 generates a larger degree of interference on the light emitted from the normal display area A2, and the peep-proof effect is enhanced.
Alternatively, as shown in fig. 6, fig. 6 is a schematic cross-sectional view of a peep-proof display area of a display panel according to another embodiment of the present invention, and in the embodiment of the present invention, a third color-resisting unit 300 may be further disposed in the first peep-proof color-resisting layer 11 and the second peep-proof color-resisting layer 12. Along the preset direction h3, the third color-resisting unit 300 in the first peep-proof color-resisting layer 11 overlaps with the third color-resisting unit 300 in the second peep-proof color-resisting layer 12. When the display panel is turned on in the peep-proof mode, part of the light emitted by the peep-proof pixel P1 and transmitted along the preset direction h3 may also sequentially exit through the third color-resisting unit 300 in the first peep-proof color-resisting layer 11 and the second peep-proof color-resisting layer 12. By the arrangement, the color number of the light emitted from the peep-proof display area A1 in the peep-proof mode can be increased, the light emitted by the display pixel P2 can be interfered to a greater extent, and the peep-proof effect can be enhanced.
Illustratively, with continued reference to fig. 6, along the first direction h1, the third color-resisting cell 300 in the second peep-proof color-resisting layer 12 overlaps with the first color-resisting cell 100 or the second color-resisting cell 200 in the first peep-proof color-resisting layer 11. When the display panel is turned on in the peep-proof mode, a part of light emitted by the peep-proof pixel P1 and propagating along the first direction h1 exits through the third color-resisting unit 300 in the first peep-proof color-resisting layer 11, and the part of light can be emitted to the first color-resisting unit 100 or the second color-resisting unit 200 in the second peep-proof color-resisting layer 12 and cannot exit. With the arrangement, the number of the colors of the large-angle light emitted from the peep-proof display area A1 in the peep-proof mode is increased, the light emitted from the display pixel P2 is interfered to a greater extent, the peep-proof effect is enhanced, and meanwhile, the light emitted from the peep-proof pixel P1 and transmitted along the first direction h1 can be prevented from being emitted, when a user observes the display panel with a sight line parallel to the first direction h1, the light emitted from the display pixel P2 can be prevented from being interfered, and the user can observe a clear picture under a normal view angle corresponding to the first direction h 1.
Exemplarily, as shown in fig. 7, fig. 7 is a schematic cross-sectional view of a normal display area of a display panel according to an embodiment of the present invention, where the normal display area a2 includes a display color resist layer 5, and the display color resist layer 5 is located on a side of a display pixel P2 close to a light emitting side of the display panel. As shown in fig. 7, the display color resist layer 5 includes a second black matrix 42 and a display color resist unit 50. The second black matrix 42 includes a plurality of openings 420, and the display color resistance unit 50 is positioned in the openings 420. Illustratively, the display color resistance unit 50 includes the first color resistance unit 100 and/or the second color resistance unit 200.
In the embodiment of the invention, the first peep-proof color resist layer 11 and the display color resist layer 5 of the peep-proof display area a1 can be formed by the same process. Specifically, the first black matrix 41 in the first anti-peeping color resist layer 11 and the second black matrix 42 in the display color resist layer 5 are synchronously manufactured, and the color resist units with the same light-emitting color in the first anti-peeping color resist layer 11 and the display color resist layer 5 are synchronously manufactured, so that the manufacturing process of the display panel is simplified.
For example, the display panel provided by the embodiment of the invention may be a liquid crystal display panel. As shown in fig. 8, fig. 8 is a schematic cross-sectional view of a display panel according to an embodiment of the present invention, where the display panel includes a color filter substrate 61 and an array substrate 62 that are oppositely disposed along the first direction h1, and a liquid crystal layer 60 located between the color filter substrate 61 and the array substrate 62.
Optionally, the privacy-improving pixel P1 includes a privacy-improving pixel electrode 81 and a first thin film transistor 71 formed in the array substrate 62. The display pixel P2 includes a display pixel electrode 82 and a second thin film transistor 72 formed in the array substrate 62. The peep-proof pixel electrode 81 is located in the peep-proof display area a 1. The display pixel electrode 82 is located in the normal display area a 2.
In the research process, the inventor finds that in order to enable an electronic product to have a peep-proof effect, one method is to attach a peep-proof film on a display screen of the electronic product, and only a black picture can be seen in a peep-proof visual angle through a fine louver structure of the peep-proof film. Another method is to design the glasses and the display matched with each other, and only wearing the glasses matched with the display can see the picture displayed by the display. Both methods need to complicate the structure of the display screen, and after the design of the display screen is completed, the display screen can only work in one mode, and the display panel cannot support the peep-proof mode and the sharing mode, and further cannot be switched between different working modes.
In the embodiment of the present invention, the peep prevention pixel electrode 81 and the display pixel electrode 82 can be independently driven. When the display panel works, only the signal on the peep-proof pixel electrode 81 needs to be adjusted, so that the peep-proof pixel P1 can be switched between lighting and non-lighting, namely, the display panel can be conveniently switched between the peep-proof mode and the sharing mode, and the user experience is greatly improved.
Illustratively, the privacy pixel P1 further includes a privacy common electrode. Display pixel P2 also includes a display common electrode. In the embodiment of the invention, the peep-proof common electrode and the display common electrode can be mutually connected so as to reduce the process complexity of the display panel. Optionally, the peep-proof common electrode and the display common electrode may be disposed on the color filter substrate 61 or the array substrate 62.
Optionally, when the privacy-preserving display area a1 is provided with a plurality of privacy-preserving pixels P1, in the embodiment of the present invention, the privacy-preserving pixel electrodes 81 of the privacy-preserving pixels P1 may be connected to each other, so that the privacy-preserving pixels P1 operate simultaneously, and the process complexity of the display panel is reduced.
For example, in the embodiment of the present invention, the first peep-proof color resist layer 11 may be disposed on the color film substrate 61 or the array substrate 62; and arranging the second peep-proof color resist layer 12 on the color film substrate 61 or the array substrate 62.
Optionally, the display color resist layer 5 may be disposed in the color filter substrate 61.
For example, the display panel having the structure shown in fig. 8 may be operated in cooperation with a backlight module. The backlight module is located on one side of the array substrate 62 away from the color film substrate 61. The backlight module may adopt a direct-type structure or a side-type structure, which is not limited in the embodiments of the present invention.
The embodiment of the invention also provides a driving method applied to the display panel, and the display mode of the display panel comprises a peep-proof mode and a sharing mode. The driving method provided by the embodiment of the invention comprises the following steps: in the privacy mode, both the privacy pixel P1 and the display pixel P2 are lit. In the sharing mode, the peep prevention pixel P1 is controlled not to be turned on, and the display pixel P2 is controlled to be turned on. The specific working principle of the display panel in different modes is described in detail in the foregoing, and is not described herein again.
According to the driving method of the display panel provided by the embodiment of the invention, the peep-proof pixel P1 is switched between lighting and non-lighting, so that the display panel can be conveniently switched between the peep-proof mode and the sharing mode, and the user experience is greatly improved.
As shown in fig. 9, fig. 9 is a schematic view of a display device according to an embodiment of the present invention, where the display device includes the display panel 1000. The specific structure of the display panel 1000 has been described in detail in the above embodiments, and is not described herein again. Of course, the display device shown in fig. 9 is only a schematic illustration, and the display device may be any electronic device with a display function, such as a mobile phone, a tablet computer, a notebook computer, an electronic book, or a television.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (15)
1. A display panel, comprising:
the anti-peeping display area comprises anti-peeping pixels, a first anti-peeping color resistance layer and a second anti-peeping color resistance layer, wherein the first anti-peeping color resistance layer and the second anti-peeping color resistance layer are arranged along a first direction, and the first direction is vertical to the plane of the display panel;
the first peep-proof color resistance layer and the second peep-proof color resistance layer respectively comprise a first color resistance unit and a second color resistance unit which are arranged along a second direction, and the second direction is parallel to the plane of the display panel; along the first direction, the first color resistance unit in the first peep-proof color resistance layer and the second color resistance unit in the second peep-proof color resistance layer are at least partially overlapped, and the second color resistance unit in the first peep-proof color resistance layer and the first color resistance unit in the second peep-proof color resistance layer are at least partially overlapped; along a preset direction, at least part of the first color resistance unit in the first peep-proof color resistance layer and at least part of the first color resistance unit in the second peep-proof color resistance layer are overlapped, and at least part of the second color resistance unit in the first peep-proof color resistance layer and at least part of the second color resistance unit in the second peep-proof color resistance layer are overlapped; the preset direction intersects the first direction.
2. The display panel according to claim 1,
the first color resistance unit is provided with a first transmittance spectrum curve, the integral area of the first transmittance spectrum curve between the wavelength lambda 11 and the wavelength lambda 12 is S1, wherein the transmittance of the first color resistance unit between the wavelength lambda 11 and the wavelength lambda 12 is larger than or equal to a first preset value;
the second color resistance unit is provided with a second transmittance spectrum curve, the integral area of the second transmittance spectrum curve between the wavelength lambda 21 and the wavelength lambda 22 is S2, wherein the transmittance of the first color resistance unit between the wavelength lambda 21 and the wavelength lambda 22 is larger than or equal to a second preset value;
the integral area of the overlapping region of the first transmittance spectrum curve and the second transmittance spectrum curve is S;
S/S1 is less than or equal to 10 percent; and/or S/S2 is less than or equal to 10 percent.
3. The display panel according to claim 1,
the first color resistor unit comprises a red color resistor;
the second color resistance unit comprises a green color resistance; or, the second color resistance unit comprises a blue color resistance.
4. The display panel according to claim 1, further comprising:
and the normal display area comprises display pixels, and the display pixels and the peep-proof pixels work independently.
5. The display panel according to claim 1,
the first peep-proof color resistance layer further comprises a first black matrix, the first black matrix comprises a plurality of openings, and the first color resistance unit and the second color resistance unit in the first peep-proof color resistance layer are respectively positioned in the different openings;
along the first direction, the first black matrix is at least partially overlapped with the first color resistance unit and the second color resistance unit in the second peep-proof color resistance layer respectively.
6. The display panel according to claim 5, further comprising a normal display area, wherein the normal display area comprises a display color resist layer, and the first anti-peeping color resist layer and the display color resist layer are formed by the same process.
7. The display panel according to claim 5,
a distance H is reserved between the first peep-proof color resistance layer and the second peep-proof color resistance layer along the first direction;
the shortest distance between two adjacent openings in the black matrix is W1；
The width of the first color resistance unit in the first peep-proof color resistance layer is W21The width of the second color resistance unit in the first peep-proof color resistance layer is W22The width direction of the first color resistance unit and the width direction of the second color resistance unit are both parallel to the plane of the display panel;
(W21+W22+1.5W1)/tanθmax≤H≤W1/2tanθmin；
wherein, thetaminIs the minimum angle between the preset direction and the first direction, thetamaxIs the maximum included angle between the preset direction and the first direction.
8. The display panel according to claim 5,
in the second peep-proof color resistance layer, the first color resistance unit and the second color resistance unit are identical in shape and area.
9. The display panel according to claim 1,
in the first peep-proof color resistance layer, the first color resistance units and the second color resistance units are alternately arranged;
in the second peep-proof color resistance layer, the first color resistance units and the second color resistance units are alternately arranged.
10. The display panel according to claim 1,
the first peep-proof color resistance layer and the second peep-proof color resistance layer also comprise a third color resistance unit;
along the preset direction, the third color resistance unit in the first peep-proof color resistance layer and the third color resistance unit in the second peep-proof color resistance layer are at least partially overlapped.
11. The display panel according to claim 10,
along the first direction, the third color resistance unit in the second peep-proof color resistance layer is at least partially overlapped with the first color resistance unit or the second color resistance unit in the first peep-proof color resistance layer.
12. The display panel according to claim 1,
the display panel comprises a color film substrate, an array substrate and a liquid crystal layer, wherein the color film substrate and the array substrate are arranged oppositely, and the liquid crystal layer is positioned between the color film substrate and the array substrate;
the first peep-proof color resistance layer is positioned on the color film substrate or the array substrate;
the second peep-proof color resistance layer is positioned on the color film substrate or the array substrate.
13. The display panel according to claim 1,
the included angle between the preset direction and the first direction is greater than or equal to 30 degrees.
14. A driving method applied to the display panel according to any one of claims 1 to 13, wherein the display panel includes a privacy mode;
the driving method includes:
and controlling the peep-proof pixels to be lightened in the peep-proof mode.
15. A display device characterized by comprising the display panel according to any one of claims 1 to 13.
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