CN114326179A - Display panel and display device - Google Patents
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- CN114326179A CN114326179A CN202111670065.3A CN202111670065A CN114326179A CN 114326179 A CN114326179 A CN 114326179A CN 202111670065 A CN202111670065 A CN 202111670065A CN 114326179 A CN114326179 A CN 114326179A
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- 238000010168 coupling process Methods 0.000 description 4
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Abstract
The application discloses display panel and display device relates to and shows technical field, includes: the liquid crystal display panel comprises a color film substrate and an array substrate which are oppositely arranged, wherein liquid crystal is arranged between the color film substrate and the array substrate, and the color film substrate comprises a first electrode; at least one pixel unit comprises a peep-proof pixel, and the peep-proof pixel comprises a second electrode; the orthographic projection of the first electrode on the light-emitting surface of the display panel covers the orthographic projection of at least one pixel unit on the light-emitting surface of the display panel, and the first electrode is electrically connected with the second electrode. According to the application, the scheme of arranging the peep-proof pixels is adopted, and the regional peep-proof effect can be achieved.
Description
Technical Field
The present application relates to the field of display technologies, and in particular, to a display panel and a display device.
Background
Liquid Crystal Display devices (LCD) have been widely used because of their advantages such as thin body, power saving, and no radiation. Currently, several commonly used liquid crystal display modes, such as FFS (Fringe field Switching) mode, IPS (In-Plane Switching) mode, etc., are widely applied to related products due to their excellent wide viewing angle characteristics; however, with the development of society, people have an increasing interest in personal privacy and information security, and the demand for the liquid crystal display screen to have a peep-proof function is also increasing.
In the related art, peeping prevention is mainly realized by adding a layer of peeping prevention film of a 3M shutter on the surface of a display device, or switching of wide and narrow viewing angles is realized by adopting a viewing angle-controllable display screen, so that peeping prevention of the display device is achieved, but the peeping prevention mode provided by the prior art cannot realize flexible regional peeping prevention; therefore, the display panel in the prior art is continuously improved, and the peep-proof function of the display panel is enhanced.
Disclosure of Invention
In view of this, the present application provides a display panel and a display device, which can achieve the effect of regional privacy protection by adopting the scheme of setting privacy protection pixels.
In order to solve the technical problem, the following technical scheme is adopted:
in a first aspect, the present application provides a display panel comprising:
the liquid crystal display panel comprises a color film substrate and an array substrate which are oppositely arranged, wherein liquid crystal is arranged between the color film substrate and the array substrate, and the color film substrate comprises a first electrode;
at least one pixel unit comprises a peep-proof pixel, and the peep-proof pixel comprises a second electrode;
the orthographic projection of the first electrode on the light-emitting surface of the display panel covers the orthographic projection of at least one pixel unit on the light-emitting surface of the display panel, and the first electrode is electrically connected with the second electrode.
In a second aspect, the present application further provides a display device, including a display panel, where the display panel is the display panel provided in the present application.
Compared with the prior art, the display panel and the display device provided by the invention at least realize the following beneficial effects:
according to the display panel and the display device provided by the application, the peep-proof pixels are arranged and comprise second electrodes; arranging a first electrode on the color film substrate, and electrically connecting a second electrode with the first electrode; the display panel is also provided with a common electrode; when voltage signals are transmitted to the second electrode and the common electrode, the first electrode is electrically connected with the second electrode, the voltage signals are transmitted to the first electrode, a voltage difference is generated between the first electrode and the common electrode, a vertical electric field is formed, the existence of the vertical electric field can weaken a horizontal electric field, liquid crystal molecules are deflected under the action of the electric field, an inclined angle is formed between the liquid crystal and a light-emitting surface of a display panel, namely the liquid crystal is deflected to form a light leakage phenomenon, the contrast is reduced, the visual angle is reduced, the narrow visual angle effect is achieved, and the peep-proof effect is achieved; most importantly, in the embodiment, the orthographic projection of the first electrode on the light-emitting surface of the display panel at least covers the orthographic projection of at least one pixel unit on the light-emitting surface of the display panel, so that the peeping prevention function of the pixel unit can be flexibly realized; optionally, the display panel is provided with a plurality of peep-proof pixels, and each peep-proof pixel can be flexibly and independently controlled, so that regional peep-proof of the display panel can be flexibly realized.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
FIG. 1 is a schematic diagram of a display panel according to the prior art;
fig. 2 is a schematic structural diagram of a display panel according to an embodiment of the present disclosure;
FIG. 3 is a cross-sectional view of the display panel along A-A' of the embodiment shown in FIG. 2;
FIG. 4 is another cross-sectional view of the display panel along A-A' provided by the embodiment shown in FIG. 2;
FIG. 5 is another cross-sectional view of the display panel along A-A' provided by the embodiment shown in FIG. 2;
fig. 6 is a schematic structural diagram of a display panel according to an embodiment of the present disclosure;
fig. 7 is a schematic structural diagram of an array substrate according to an embodiment of the present disclosure;
fig. 8 is a schematic structural diagram of a display panel according to an embodiment of the present disclosure;
fig. 9 is a schematic structural diagram of a display panel according to an embodiment of the present disclosure;
fig. 10 is a schematic structural diagram of a display panel according to an embodiment of the present disclosure;
fig. 11 is a schematic structural diagram of a display device according to an embodiment of the present disclosure.
Detailed Description
As used in the specification and in the claims, certain terms are used to refer to particular components. As one skilled in the art will appreciate, manufacturers may refer to a component by different names. This specification and claims do not intend to distinguish between components that differ in name but not function. In the following description and in the claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "include, but not limited to. "substantially" means within an acceptable error range, within which a person skilled in the art can solve the technical problem to substantially achieve the technical result. Furthermore, the term "coupled" is intended to encompass any direct or indirect electrical coupling. Thus, if a first device couples to a second device, that connection may be through a direct electrical coupling or through an indirect electrical coupling via other devices and couplings. The description which follows is a preferred embodiment of the present application, but is made for the purpose of illustrating the general principles of the application and not for the purpose of limiting the scope of the application. The protection scope of the present application shall be subject to the definitions of the appended claims. The same parts between the embodiments are not described in detail.
FIG. 1 is a schematic diagram of a display panel according to the prior art; referring to fig. 1, in the prior art, a display panel 300 includes an array substrate 310, a common electrode 320, a liquid crystal 330, a privacy electrode 340 and a filter 350, which are arranged in an array, wherein when signals are respectively input to the privacy electrode 340 and the common electrode 320, a field is formed between the privacy electrode 340 and the common electrode 320, so as to drive the liquid crystal to deflect; in the prior art, the peep-proof electrode 340 is set as a whole-surface electrode, and only the whole-surface peep-proof electrode 340 can be started during peep-proof, so that the regional control cannot be realized, and the flexible peep-proof of the display panel is not facilitated.
In view of this, the present application provides a display panel and a display device, which are provided with a plurality of peep-proof electrodes, and can achieve regional peep-proof of the display panel.
The following detailed description is to be read in connection with the drawings and the detailed description.
Fig. 2 is a schematic structural diagram of a display panel provided in an embodiment of the present application, and fig. 3 is a cross-sectional view of the display panel provided in the embodiment of fig. 2 along a line a-a', please refer to fig. 2 to 3, which illustrate a display panel 100 provided in the present application, including:
the liquid crystal display panel comprises a color film substrate 10 and an array substrate 20 which are arranged oppositely, wherein a liquid crystal 30 is arranged between the color film substrate 10 and the array substrate 20, and the color film substrate 10 comprises a first electrode 40;
the orthographic projection of the first electrode 40 on the light-emitting surface of the display panel covers the orthographic projection of at least one pixel unit 50 on the light-emitting surface of the display panel, and the first electrode 40 is electrically connected with the second electrode 60.
Specifically, as shown in fig. 2 to fig. 3, the display panel 100 in the present embodiment includes a color filter substrate 10 and an array substrate 20 that are disposed opposite to each other, and a liquid crystal 30 located between the color filter substrate 10 and the array substrate 20; the display panel 100 further includes a display area and a non-display area (not labeled in the figure), the display area is used for displaying a picture, and the non-display area is used for setting the pixel driving circuit; the display area comprises a plurality of pixel units 50, at least one pixel unit 50 comprises a peep-proof pixel 51, and the peep-proof pixel 51 comprises a second electrode 60; optionally, the second electrode 60 is located on the array substrate 20, and the second electrode 60 is electrically connected to the first electrode 40; optionally, the liquid crystal 30 includes a plurality of liquid crystal molecules, and the liquid crystal molecules are deflected under the action of the electric field to transmit light; optionally, a common electrode 160 is further disposed in this embodiment, and the common electrode 160 is located on the array substrate 20; in this embodiment, after voltage signals are introduced to the second electrode 60 and the common electrode 160, the first electrode 40 is electrically connected to the second electrode 60, the voltage signals are transmitted to the first electrode 40, and a voltage difference is generated between the first electrode 40 and the common electrode 160 and/or the pixel electrode 150 (it can be understood that the pixel unit generally includes at least one sub-pixel for displaying, and the sub-pixel includes a pixel electrode), so that a voltage difference is generated therebetween, a vertical electric field is formed, and the existence of the vertical electric field weakens the horizontal electric field, so that liquid crystal molecules are deflected under the effect of the electric field, so that an oblique angle is formed between the liquid crystal 30 and the light emitting surface of the display panel, that is, the liquid crystal 30 is deflected to form a light leakage phenomenon, thereby reducing the contrast of a large viewing angle, reducing the viewing angle, achieving a narrow viewing angle effect, and achieving an anti-peep effect; most importantly, in the present embodiment, the orthographic projection of the first electrode 40 on the light-emitting surface of the display panel at least covers the orthographic projection of at least one pixel unit 50 on the light-emitting surface of the display panel, so that the anti-peeping function of the pixel unit 50 can be flexibly implemented; optionally, the display panel 100 is provided with a plurality of privacy protection pixels 51, and each privacy protection pixel 51 can be flexibly and independently controlled, so that regional privacy protection of the display panel 100 can be flexibly realized.
It should be noted that, in an optional embodiment, if part of the peep-proof pixels 51 is in an on mode, part of the peep-proof pixels 51 is in an off mode, and part of the display pixels 52 is in an on mode, the display panel 100 implements local peep-proof; or all the peep-proof pixels 51 may be in the on mode, and part of the display pixels 52 may be in the on mode, so that the display panel 100 is globally peeped-proof; the optimal peep-proof mode can be selected according to different application scenes.
The color filter substrate 10 is a color filter substrate, the color filter substrate 10 is usually further provided with structures such as a black matrix 110 and a color filter 120, and a protective layer is provided on a side of the color filter substrate 10 facing the liquid crystal 30, and optionally, the protective layer is an oc (over coating) layer; the array substrate 20 includes a thin film transistor, a data line, a gate line, and the like, and a protective layer or a passivation layer is disposed on a side of the array substrate 20 facing the liquid crystal 30; optionally, a substrate 130 is further disposed on the light exit surface of the array substrate 20 away from the display panel; the pixel unit 50 in this embodiment includes color sub-pixels, optionally, a red sub-pixel, a green sub-pixel, and a blue sub-pixel, and at least a part of the pixel unit further includes a privacy-improving pixel 51. Optionally, the display panel 100 further includes a first polarizer and a second polarizer (not shown in the figure), the first polarizer is located on one side of the color film substrate 10 away from the liquid crystal 30, the second polarizer is located on one side of the array substrate 20 away from the liquid crystal 30, and the first polarizer and the second polarizer at least partially cover the pixel unit 50 along a direction perpendicular to the light-emitting surface of the display panel 100.
It should be noted that the embodiment shown in fig. 2 only schematically illustrates a position diagram where two privacy pixels 51 are disposed, and does not represent the actual size of the privacy pixels 51; the embodiment shown in fig. 3 only schematically shows the positional relationship among the color filter substrate 10, the liquid crystal 30 and the array substrate 20, and does not represent actual dimensions, nor does the first electrode 40 and the second electrode 60 shown in fig. 3 represent actual dimensions.
Fig. 4 is another cross-sectional view of the display panel along a-a 'in the embodiment shown in fig. 2, fig. 5 is another cross-sectional view of the display panel along a-a' in the embodiment shown in fig. 2, please refer to fig. 3 to fig. 5, in an alternative embodiment of the present application, at least one protrusion 70 is further included between the color filter substrate 10 and the array substrate 20, at least a portion of the first electrode 40 and/or the second electrode 60 covers a surface of the protrusion 70, and the first electrode 40 is in contact with the second electrode 60.
It should be noted that the embodiment shown in fig. 3 only schematically shows a structural diagram of the protruding portion 70, and does not represent the actual size of the protruding portion 70; the embodiment shown in fig. 4 and 5 only illustrates another structure diagram of the protruding portion 70, and does not represent the actual size of the protruding portion 70.
Specifically, as shown in fig. 3 to fig. 5, in the present embodiment, at least one protrusion 70 is disposed between the color film substrate 10 and the array substrate 20, and optionally, at least a portion of the first electrode 40 or the second electrode 60 covers a surface of the protrusion 70, and at least a portion of both the first electrode 40 and the second electrode 60 covers a surface of the protrusion 70 along a direction D3 perpendicular to the light emitting surface of the display panel; when at least part of the first electrode 40 covers the surface of the protruding part 70, the protruding part 70 lifts the first electrode 40, and the first electrode 40 can be electrically connected with the second electrode 60 in a contact manner; when at least part of the second electrode 60 covers the surface of the protruding part 70, the protruding part 70 raises the second electrode 60, so that the second electrode 60 can be electrically connected with the first electrode 40 in a contacting manner; when at least part of the first electrode 40 and at least part of the second electrode 60 both cover the surface of the protrusion 70, the protrusion 70 raises the first electrode 40 and the second electrode 60 in both directions, so that the second electrode 60 can be electrically connected with the first electrode 40 in a contact manner; in this way, the first electrode 40 or the second electrode 60 is raised by the projection 70, and the first electrode 40 and the second electrode 60 are brought into contact with each other, so that the first electrode 40 and the second electrode 60 are electrically connected, and further, signal conduction is achieved, and further, partial peeping prevention can be achieved.
It will be appreciated that the embodiment shown in fig. 3 illustrates a schematic view in which both the first electrode 40 and the second electrode 60 cover the projection 70, that is, a case in which two projections are provided; the embodiment shown in fig. 4 illustrates a schematic view of the first electrode 40 covering the protruding portion 70; the embodiment shown in fig. 5 is a schematic diagram of the second electrode 60 covering the protruding portion 70, and a person skilled in the art may select an appropriate arrangement manner of the protruding portion 70 according to actual requirements, which is not limited in the present application.
With continued reference to FIG. 3, in an alternative embodiment of the present application, the protrusion 70 includes a first sub-portion 71 and a second sub-portion 72;
the first sub-portion 71 is located on one side of the color film substrate 10 close to the liquid crystal 30, and at least a part of the first electrode 40 covers the surface of the first sub-portion 71;
the second sub-portion 72 is located on a side of the array substrate 20 close to the liquid crystal 30, and at least a portion of the second electrode 60 covers a surface of the second sub-portion 72.
It should be noted that the embodiment shown in fig. 2 only schematically shows the positional relationship between the first sub-portion 71 and the second sub-portion 72, and does not represent actual dimensions.
Specifically, with reference to fig. 3, the protrusion 70 in this embodiment includes a first sub-portion 71 and a second sub-portion 72, where the first sub-portion 71 and the second sub-portion 72 are respectively disposed on the color filter substrate 10 and the array substrate 20, the first sub-portion 71 and the second sub-portion 72 are both located between the color filter substrate 10 and the array substrate 20, at least a portion of the first electrode 40 covers a surface of the first sub-portion 71, and at least a portion of the second electrode 60 covers a surface of the second sub-portion 72; thus, both the first electrode 40 and the second electrode 60 are raised; on one hand, the first electrode 40 and the second electrode 60 can be effectively contacted and electrically connected; on the other hand, the height of the single protruding portion 70 is reduced, and it is avoided that when the first electrode 40 and/or the second electrode 60 covers the surface of the protruding portion 70 due to the excessively high height of the protruding portion 70, disconnection is caused by a process, and further signal blocking is caused, which affects the anti-peeping function of the display panel 100, and further affects the yield of the display panel 100.
Referring to fig. 3, in an alternative embodiment of the present application, an orthogonal projection of the first sub-portion 71 on the light-emitting surface of the display panel coincides with an orthogonal projection of the second sub-portion 72 on the light-emitting surface of the display panel.
Specifically, as shown in fig. 3, in the present embodiment, the first sub-portion 71 and the second sub-portion 72 are overlapped along a direction D3 perpendicular to the light emitting surface of the display panel, so that the contact area between the first electrode 40 and the second electrode 60 is larger, which is beneficial to reducing the impedance; in addition, the first electrode 40 and the second electrode 60 are overlapped, which is beneficial to reducing the area of the orthographic projection of the peep-proof pixel 51 on the light emitting surface of the display panel, i.e. saving the space occupied by the peep-proof pixel 51 in the display panel 100.
Referring to fig. 3, in an alternative embodiment of the present application, a dimension of the first sub-portion 71 along a direction D3 perpendicular to the light-emitting surface of the display panel is equal to a dimension of the second sub-portion 72 along a direction D3 perpendicular to the light-emitting surface of the display panel.
Specifically, as shown in fig. 3, in the present embodiment, the first electrode 40 and the second electrode 60 have the same size along a direction D3 perpendicular to the light-emitting surface of the display panel; that is, the height of the first sub-portion 71 is d1, the height of the second sub-portion 72 is d2, and the heights of the first sub-portion 71 and the second sub-portion 72 are equal, so that the climbing capacities of the first electrode 40 covered on the surface of the first sub-portion 71 and the second electrode 60 covered on the surface of the second sub-portion 72 are consistent, the risk of wire breakage of the first electrode and the second electrode can be reduced, the effectiveness of the second electrode 60 in transmitting signals to the first electrode 40 is ensured, and the yield of the display panel 100 is improved.
Referring to fig. 3, in an alternative embodiment of the present application, the method further includes: the isolation pillar 170, the isolation pillar 170 is located on one side of the color film substrate 10 close to the liquid crystal 30, and the first sub-portion 71 and the isolation pillar 170 are in the same layer and are prepared by the same process.
It should be noted that the structure of the isolation pillar 170 is only schematically shown in the embodiment shown in fig. 3, and does not represent the actual size of the isolation pillar 170.
Specifically, as shown in fig. 3, the display panel 100 in the embodiment further includes an isolation pillar 170, optionally, the isolation pillar 170 is located on one side of the color film substrate 10 close to the liquid crystal 30, where the isolation pillar 170 plays a role in supporting, so as to prevent the display panel 100 from deforming when being squeezed by an external force; optionally, the first sub-portion 71 and the isolation pillar 170 are fabricated at the same layer and are fabricated at the same time by the same process, so that the fabrication of the display panel can be effectively simplified.
Fig. 6 is a schematic structural diagram of a display panel according to an embodiment of the present application, fig. 7 is a schematic structural diagram of an array substrate according to an embodiment of the present application, please refer to fig. 6 and fig. 7, and refer to fig. 3 continuously, in an alternative embodiment of the present application, the display panel further includes: a first data line 81 and a first gate line 82, the first data line 81 extending along a first direction D1 and arranged along a second direction D2, the first gate line 82 extending along a second direction D2 and arranged along a first direction D1, the first direction D1 and the second direction D2 intersecting;
the peep-proof pixel 51 further comprises a first thin film transistor 83, the first thin film transistor 83 is located on the array substrate 20, and the first thin film transistor 83 comprises a source electrode, a drain electrode and a grid electrode; the first data line 81 is electrically connected to a source or a drain of the first thin film transistor 83, and the first gate line 82 is electrically connected to a gate of the first thin film transistor 83.
It should be noted that the embodiment shown in fig. 6 only schematically shows the positional relationship between the first data line 81 and the second gate line 92, and does not represent actual dimensions.
Specifically, referring to fig. 6 and fig. 7 in combination with fig. 3, the display panel in this embodiment further includes a first data line 81 and a first gate line 82, the first data line 81 extends along a first direction D1 and is arranged along a second direction D2, the first gate line 82 extends along a second direction D2 and is arranged along a first direction D1, the first direction D1 intersects with the second direction D2, and optionally, the first direction D1 is perpendicular to the second direction D2; the first data line 81 and the first gate line 82 cross each other to define the peep-proof pixel 51; optionally, the peep-proof pixel 51 includes a first thin film transistor 83, the first thin film transistor 83 is located on the array substrate 20, and the peep-proof pixel 51 is disposed corresponding to the first thin film transistor 83; alternatively, the first thin film transistor 83 includes a source, a drain, and a gate; the first data line 81 is electrically connected to a source or a drain of the first thin film transistor 83, and the first gate line 82 is electrically connected to a gate of the first thin film transistor 83; it can be understood that the common trace transmits a common voltage signal to the common electrode 160, the first data line 81 transmits a data signal to the second electrode 60, and the second electrode 60 transmits the data signal to the first electrode 40, so that a vertical electric field is formed between the first electrode 40 and the common electrode 160 and/or the pixel electrode 150, and the liquid crystal 30 is driven to deflect to form a light leakage phenomenon, thereby reducing the contrast, reducing the viewing angle, achieving the narrow viewing angle effect, and achieving the anti-peeping effect.
With continuing reference to fig. 6 and 7, in an alternative embodiment of the present application, the method further includes: a second data line 91 and a second gate line 92, the second data line 91 extending along a first direction D1 and arranged along a second direction D2, the second gate line 92 extending along a second direction D2 and arranged along a first direction D1;
the pixel unit 50 further includes a display pixel 52, the display pixel 52 further includes a second thin film transistor 93, the second thin film transistor 93 is located on the array substrate 20, and the second thin film transistor 93 includes a source, a drain, and a gate; the second data line 91 is electrically connected to a source or a drain of the second thin film transistor 93, and the second gate line 92 is electrically connected to a gate of the second thin film transistor 93;
the first gate line 82 is multiplexed as a second gate line 92.
It should be noted that the embodiment shown in fig. 6 only schematically shows the positional relationship between the second data line 91 and the second gate line 92, and does not represent actual dimensions.
Specifically, as shown in fig. 6 and fig. 7, the display panel 100 in this embodiment further includes a second data trace and a second gate line 92, the second data line 91 extends along the first direction D1 and is arranged along the second direction D2, and the second gate line 92 extends along the second direction D2 and is arranged along the first direction D1; the second data line 91 and the second gate line 92 are crossed and insulated to define a display pixel 52, the display pixel 52 is correspondingly provided with a pixel electrode 150, the display pixel 52 comprises a second thin film transistor 93, and the second thin film transistor 93 is located on the array substrate 20 and is correspondingly arranged with a sub-pixel in the display pixel 52; the second thin film transistor 93 includes a source electrode, a drain electrode, and a gate electrode, the second data line 91 is electrically connected to the source electrode or the drain electrode of the second thin film transistor 93, and the second gate line 92 is electrically connected to the gate electrode of the second thin film transistor 93; it is understood that a common voltage signal can be transmitted to the common electrode 160 through a common trace, and the second data line 91 transmits a data signal to the pixel electrode 150, wherein the data signal transmission needs to be conducted through the gate; a horizontal electric field is formed between the pixel electrode 150 and the common electrode 160 to drive the liquid crystal 30 to deflect, and light of the backlight module passes through the liquid crystal 30 to reach the color film substrate 10, so that normal display of the display panel 100 is realized; in this embodiment, the first gate line 82 and the second gate line 92 share one gate line, so that the number of signal traces in the display panel 100 can be reduced, the aperture ratio of the display panel 100 can be increased, and the manufacturing process of the display panel 100 can be simplified.
It should be noted that the embodiment shown in fig. 3 only schematically illustrates a schematic diagram of the first gate line 82 and the second gate line 92 being shared, and in other embodiments, the first gate line 82 and the second gate line 92 are separately provided (not shown in the figure).
Fig. 8 is a schematic structural diagram of a display panel according to an embodiment of the present disclosure, please refer to fig. 8, in an alternative embodiment of the present disclosure, a plurality of second electrodes 60 are electrically connected.
It should be noted that the embodiment shown in fig. 8 only schematically illustrates the position where the two second electrodes 60 are connected, and does not represent actual dimensions.
Specifically, as shown in fig. 8, a plurality of second electrodes 60 are disposed in the present embodiment, wherein the second electrodes 60 are electrically connected to each other; alternatively, the plurality of second electrodes 60 are in direct contact electrical connection; therefore, the synchronous switching between the peeping prevention and the display mode of the pixel units can be realized, the switching between the peeping prevention and the display is simplified, and the regional peeping prevention is favorably realized. In addition, the plurality of second electrodes 60 electrically connected to each other are controlled by the same first thin film transistor 83, so that the manufacturing process can be simplified.
Fig. 9 is a schematic structural diagram of a display panel according to an embodiment of the present disclosure, please refer to fig. 9, in an alternative embodiment of the present disclosure, an orthogonal projection of the first electrode 40 on a light-emitting surface of the display panel covers an orthogonal projection of the plurality of pixel units 50 on the light-emitting surface of the display panel.
Specifically, as shown in fig. 9, in the present embodiment, the first electrode 40 covers the plurality of pixel units 50 along a direction D3 perpendicular to the light-emitting surface of the display panel; it is understood that the display panel is provided with a plurality of privacy-improving pixels 51, the same first electrode 40 is correspondingly provided for a plurality of privacy-improving electrodes, and optionally, the size of the first electrode 40 is equal to or less than 1/2 display areas; optionally, only one thin film transistor is disposed in the array substrate to transmit a signal to the second electrode 60, and the second electrode 60 is transmitted to the first electrode 40; thus, the process of the first electrode 40 can be simplified.
Alternatively, the second electrode 60 may be electrically connected by a trace as shown in fig. 8, or may be disposed on the whole surface like the first electrode 40 as shown in fig. 9, which is not limited herein.
Fig. 10 is a schematic structural diagram of a display panel according to an embodiment of the present disclosure, please refer to fig. 10, in an alternative embodiment of the present disclosure, the display panel includes a first region 141 and a second region 142, along a direction D3 perpendicular to a light exit surface of the display panel, a first electrode 40 located in the first region 141 is insulated from a first electrode 40 located in the second region 142, and a second electrode 60 located in the first region 141 is insulated from a second electrode 60 located in the second region 142.
It should be noted that the embodiment shown in fig. 10 only schematically shows the positional relationship between the first region 141 and the second region 142, and does not represent actual dimensions.
Specifically, as shown in fig. 10, the display panel 100 of the present embodiment includes a first region 141 and a second region 142, wherein the first electrode 40 located in the first region 141 is insulated from the first electrode 40 located in the second region 142, and the first electrode 40 located in the second region 142 is insulated from the second electrode 60 located in the second region 142; it can be understood that the peep-proof pixels 51 located in the first region 141 and the peep-proof pixels 51 located in the second region 142 are controlled independently, that is, the peep-proof modes of the first region 141 and the second region 142 can be flexibly turned on, so that the display panel 100 can implement the regional peep-proof.
Alternatively, the first region 141 and the second region 142 may be in different states at the same time, that is, the first region 141 may be in the peep-proof mode, and the second region 142 may be in the normal display mode; the first region 141 may be a normal display mode, and the second region 142 may be a privacy mode; first region 141 and second region 142 may be simultaneously in privacy mode; according to different requirements, peep-proof and display modes can be flexibly switched, and the user satisfaction is improved.
The first region 141 and the second region 142 included in the display panel 100 may be divided into left and right regions, or may be divided into upper and lower regions, and the present application is not limited thereto.
As shown in fig. 3 and fig. 7, in an alternative embodiment of the present application, the pixel unit 50 further includes a display pixel 52, the display pixel 52 includes a pixel electrode 150 and a common electrode 160, the pixel electrode 150 and the common electrode 160 are both disposed on the array substrate 20, and the pixel electrode 150 and the common electrode 160 form a horizontal electric field.
Specifically, as shown in fig. 3 and fig. 7, the pixel unit 50 in the present embodiment includes a display pixel 52, a pixel electrode 150 and a common electrode 160 are disposed corresponding to the display pixel 52, the pixel electrode 150 and the common electrode 160 are both disposed on the array substrate 20, and optionally, the common electrode 160 and the pixel electrode 150 are disposed on the same layer, or on different layers; when the display panel 100 normally displays, a horizontal electric field is formed between the pixel electrode 150 and the common electrode 160 to drive the liquid crystal 30 to deflect, and light of the backlight module passes through the liquid crystal 30 to reach the color film substrate 10, so that normal display of the display panel 100 is realized.
Based on the same inventive concept, fig. 11 is a schematic structural diagram of a display device provided in an embodiment of the present application, please refer to fig. 11, the present application further provides a display device 200, the display device 200 includes a display panel 100, the display panel 100 is a display panel provided in any of the embodiments of the present application, and repeated descriptions are omitted.
It should be noted that, for the embodiments of the Display device 200 provided in the embodiments of the present application, reference may be made to the embodiments of the Display panel 100, and the Display device 200 of the present application takes a Liquid Crystal 30 Display (Liquid Crystal Display) device as an example, and repeated parts are not repeated. The display device 200 provided by the present application may be: any product or component with practical functions such as a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator and the like.
According to the embodiments, the application has the following beneficial effects:
according to the display panel and the display device, the peep-proof pixels are arranged and comprise the second electrodes; arranging a first electrode on the color film substrate, and electrically connecting a second electrode with the first electrode; the display panel is also provided with a common electrode; when voltage signals are transmitted to the second electrode and the common electrode, the first electrode is electrically connected with the second electrode, the voltage signals are transmitted to the first electrode, a voltage difference is generated between the first electrode and the common electrode, a vertical electric field is formed, the existence of the vertical electric field can weaken a horizontal electric field, liquid crystal molecules are deflected under the action of the electric field, an inclined angle is formed between the liquid crystal and a light-emitting surface of a display panel, namely the liquid crystal is deflected to form a light leakage phenomenon, the contrast is reduced, the visual angle is reduced, the narrow visual angle effect is achieved, and the peep-proof effect is achieved; most importantly, in the embodiment, the orthographic projection of the first electrode on the light-emitting surface of the display panel at least covers the orthographic projection of at least one pixel unit on the light-emitting surface of the display panel, so that the peeping prevention function of the pixel unit can be flexibly realized; optionally, the display panel is provided with a plurality of peep-proof pixels, and each peep-proof pixel can be flexibly and independently controlled, so that regional peep-proof of the display panel can be flexibly realized.
The foregoing description shows and describes several preferred embodiments of the present application, but as aforementioned, it is to be understood that the application is not limited to the forms disclosed herein, but is not to be construed as excluding other embodiments and is capable of use in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the application, which is to be protected by the claims appended hereto.
Claims (13)
1. A display panel, comprising:
the liquid crystal display panel comprises a color film substrate and an array substrate which are arranged oppositely, wherein liquid crystal is arranged between the color film substrate and the array substrate, and the color film substrate comprises a first electrode;
at least one of the pixel units comprises a privacy-improving pixel, and the privacy-improving pixel comprises a second electrode;
the orthographic projection of the first electrode on the light-emitting surface of the display panel covers the orthographic projection of at least one pixel unit on the light-emitting surface of the display panel, and the first electrode is electrically connected with the second electrode.
2. The display panel according to claim 1, further comprising at least one protrusion portion between the color filter substrate and the array substrate, wherein at least a portion of the first electrode and/or the second electrode covers a surface of the protrusion portion, and the first electrode is in contact with the second electrode.
3. The display panel according to claim 2, wherein the projection portion includes a first sub-portion and a second sub-portion;
the first sub-part is positioned on one side, close to the liquid crystal, of the color film substrate, and at least part of the first electrode covers the surface of the first sub-part;
the second sub-portion is located on one side of the array substrate close to the liquid crystal, and at least part of the second electrode covers the surface of the second sub-portion.
4. The display panel as claimed in claim 3, wherein an orthogonal projection of the first sub-portion on the light emitting surface of the display panel coincides with an orthogonal projection of the second sub-portion on the light emitting surface of the display panel.
5. The display panel as claimed in claim 3, wherein the first sub-portion has a dimension in a direction perpendicular to the light-emitting surface of the display panel equal to a dimension of the second sub-portion in a direction perpendicular to the light-emitting surface of the display panel.
6. The display panel according to claim 3, further comprising: the isolation column is positioned on one side, close to the liquid crystal, of the color film substrate, and the first sub-portion and the isolation column are on the same layer and are prepared by the same process.
7. The display panel according to claim 1, further comprising: the first data lines extend along a first direction and are arranged along a second direction, the first gate lines extend along the second direction and are arranged along the first direction, and the first direction and the second direction are intersected;
the peep-proof pixel further comprises a first thin film transistor, the first thin film transistor is positioned on the array substrate and comprises a source electrode, a drain electrode and a grid electrode; the first data line is electrically connected to a source or a drain of the first thin film transistor, and the first gate line is electrically connected to the gate of the first thin film transistor.
8. The display panel according to claim 7, further comprising: a second data line extending in the first direction and arranged in the second direction, and a second gate line extending in the second direction and arranged in the first direction;
the pixel unit further comprises a display pixel, the display pixel further comprises a second thin film transistor, the second thin film transistor is located on the array substrate, and the second thin film transistor comprises a source electrode, a drain electrode and a grid electrode; the second data line is electrically connected with a source electrode or a drain electrode of the second thin film transistor, and the second gate line is electrically connected with a gate electrode of the second thin film transistor;
the first gate line is multiplexed as the second gate line.
9. The display panel according to claim 1, wherein a plurality of the second electrodes are electrically connected.
10. The display panel of claim 1, wherein the orthographic projection of the first electrode on the light emitting surface of the display panel covers the orthographic projection of the pixel units on the light emitting surface of the display panel.
11. The display panel according to claim 1, wherein the display panel comprises a first region and a second region, and wherein the first electrode in the first region is insulated from the first electrode in the second region, and the second electrode in the first region is insulated from the second electrode in the second region in a direction perpendicular to a light emitting surface of the display panel.
12. The display panel of claim 1, wherein the pixel unit further comprises a display pixel, the display pixel comprises a pixel electrode and a common electrode, the pixel electrode and the common electrode are both located on the array substrate, and the pixel electrode and the common electrode form a horizontal electric field.
13. A display device characterized by comprising the display panel according to any one of claims 1 to 12.
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| CN202111670065.3A CN114326179A (en) | 2021-12-31 | 2021-12-31 | Display panel and display device |
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Application publication date: 20220412 |