CN114265220B - Display device and electric control liquid crystal film - Google Patents
Display device and electric control liquid crystal film Download PDFInfo
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- CN114265220B CN114265220B CN202111609107.2A CN202111609107A CN114265220B CN 114265220 B CN114265220 B CN 114265220B CN 202111609107 A CN202111609107 A CN 202111609107A CN 114265220 B CN114265220 B CN 114265220B
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Abstract
The application discloses a display device and an electric control liquid crystal film, wherein the display device comprises a peep-proof display panel and an electric control liquid crystal film, and the peep-proof display panel comprises a light converging device for converging light rays emitted from a light emitting surface of the peep-proof display panel; the electric control liquid crystal membrane comprises electric control liquid crystal, and the electric control liquid crystal is arranged in the electric control liquid crystal membrane; the electric control liquid crystal membrane is arranged on one side of the light emitting surface of the peep-proof display panel and corresponds to the light converging device; when the electric control liquid crystal membrane is electrified, the electric control liquid crystal is uniform in orientation, and the electric control liquid crystal membrane is in a transparent state; when the electric control liquid crystal membrane is not electrified, the electric control liquid crystal is in original disordered alignment, and the electric control liquid crystal membrane is in a penetrating and diffusing state; the light emitted from the light emitting surface of the display device has a larger visual angle in a penetrating and diffusing state than in a transparent state; the anti-peeping device has the advantages that the anti-peeping effect is achieved through the design, and the anti-peeping mode or the non-peeping mode can be freely switched according to the situation.
Description
Technical Field
The application relates to the technical field of display, in particular to a display device and an electric control liquid crystal membrane.
Background
With the popularization of portable display devices, the peep-proof technology of display devices is also gaining importance, and people want to protect personal privacy when using electronic display devices in common places.
At present, the display device with peep-proof mode, peep-proof structure sets up in display device, when needs peep-proof, can set up as peep-proof mode, but can't regulate and control when not needing peep-proof and switch over peep-proof mode to non-peep-proof mode, leads to using very inconvenient, and current setting up peep-proof structure in display device in addition can only be applicable to liquid crystal display device, application scope is little. Therefore, how to provide a peep-proof display device, so that the peep-proof effect can be freely switched.
Disclosure of Invention
The purpose of the application is to provide a display device and an electric control liquid crystal membrane, so that the peep-proof effect can be achieved, and the peep-proof mode or the non-peep-proof mode can be freely switched according to the situation.
The application discloses a display device, which comprises an electric control liquid crystal membrane and a peep-proof display panel, wherein the peep-proof display panel comprises a light converging device for converging light rays emitted from a light emitting surface of the peep-proof display panel; the electric control liquid crystal membrane comprises electric control liquid crystal, and the electric control liquid crystal is arranged in the electric control liquid crystal membrane; the electric control liquid crystal membrane is arranged on one side of the light emitting surface of the peep-proof display panel and corresponds to the light converging device; when the electric control liquid crystal membrane is electrified, the electric control liquid crystal is uniform in orientation, and the electric control liquid crystal membrane is in a transparent state; when the electric control liquid crystal membrane is not electrified, the electric control liquid crystal is originally disordered in orientation, and the electric control liquid crystal membrane is in a penetrating and diffusing state; the light emitted from the light emitting surface of the display device has a larger visual angle in a penetrating and diffusing state than in a transparent state.
Optionally, the light beam-converging device includes a first black matrix layer and a second black matrix layer, where the first black matrix layer is a plurality of first black matrixes arranged in the peep-proof display panel at intervals; the second black matrix layers are a plurality of second black matrixes which are arranged on the surface of the peep-proof display panel, which is close to the electric control liquid crystal membrane, the first black matrixes and the second black matrixes are arranged in one-to-one correspondence, and when light rays emitted by the light emitting structure of the peep-proof display panel pass through the peep-proof display panel, the first black matrixes and the second black matrixes are matched for converging the light rays so as to display in a narrow visual angle.
Optionally, the light beam-converging device includes a first black matrix layer and a second black matrix layer, where the first black matrix layer is a plurality of first black matrixes arranged in the peep-proof display panel at intervals; the second black matrix layer is a plurality of second black matrixes which are arranged on the light incident surface of the peep-proof display panel at intervals, the first black matrixes and the second black matrixes are arranged in one-to-one correspondence, and when light is emitted from the light emitting structure of the peep-proof display panel and then enters the light incident surface of the peep-proof display panel, the first black matrixes and the second black matrixes are matched to be used for converging the light so as to display at a narrow visual angle.
Optionally, the light beam converging device includes a grating film, where the grating film is used to converge light to perform narrow viewing angle display; the grating grid diaphragm comprises grating layer shading areas and grating layer light transmission areas which are alternately arranged, and the grating grid diaphragm is arranged between the electric control liquid crystal diaphragm and the peep-proof display panel.
Optionally, the peep-proof display panel is a liquid crystal display panel, and the peep-proof display panel includes a first substrate, a liquid crystal layer and a second substrate, where the first substrate and the second substrate are oppositely disposed, and the liquid crystal layer is located between the first substrate and the second substrate; the first substrate is positioned on the light incident surface of the liquid crystal layer, and the second substrate is positioned on the light emergent surface of the liquid crystal layer; the first black matrix layer is arranged on one side of the first substrate close to the liquid crystal layer or one side of the second substrate close to the liquid crystal layer.
Optionally, the electrically controlled liquid crystal film further includes an upper substrate, a first transparent electrode layer, a second transparent electrode layer and a lower substrate, where the second transparent electrode layer is disposed on a side of the lower substrate away from the light-emitting surface of the peep-proof display panel, the first transparent electrode layer is disposed on a side of the upper substrate close to the light-emitting surface of the peep-proof display panel, the upper substrate and the lower substrate are disposed opposite to each other to form a cavity, and the electrically controlled liquid crystal is disposed in the cavity; the first transparent electrode layer is integrally formed and is paved on the upper substrate in the whole surface; the second transparent electrode layer is integrally formed and is paved on the lower substrate in whole; the thickness of the electric control liquid crystal is 20um-200um.
Optionally, the width of the first black matrix along the extending direction is b1, the width of the second black matrix is b2, the distance between the first black matrix and the second black matrix is h, the distance between the central axes of the first black matrix and the second black matrix along the extending direction is P, the average refractive index of light propagating between the first black matrix layer and the second black matrix layer is n, after the light passes through the peep-proof structure, the included angle between the maximum view angle of the light and the normal line of the display panel is d, and then the maximum view angle is 2d, 2d=2arcsin { n×sin [ arctan (2P-b 1-b 2)/2 h ] }; wherein 2d is 56 ° or less and more than 0 °.
The application also discloses automatically controlled liquid crystal film for control display panel switches between peeping-preventing mode and non-peeping-preventing mode, be provided with first black matrix layer in the display panel, first black matrix layer is a plurality of first black matrixes that the interval set up, automatically controlled liquid crystal film includes the shading structure that a plurality of intervals set up, shading structure sets up in the automatically controlled liquid crystal film, and with first black matrix one-to-one sets up, the cooperation is right the light that display panel sent is received and is restrainted.
Optionally, the light shielding structure includes a plurality of second black matrixes arranged at intervals; the display panel is a liquid crystal display panel, and comprises a first substrate, a first black matrix layer, a liquid crystal layer and a second substrate, wherein the first substrate and the second substrate are oppositely arranged, and the liquid crystal layer is positioned between the first substrate and the second substrate; the first substrate is positioned on the light incident surface of the liquid crystal layer, and the second substrate is positioned on the light emergent surface of the liquid crystal layer; the first black matrix layer is arranged on one side of the first substrate close to the liquid crystal layer or one side of the second substrate close to the liquid crystal layer, and comprises a plurality of first black matrixes arranged at intervals, wherein the first black matrixes and the second black matrixes are arranged in one-to-one correspondence; or the display panel is an active light-emitting display panel, the display panel comprises a substrate, an active light-emitting layer and a first black matrix layer, the active light-emitting layer is arranged on the substrate, the first black matrix layer is a plurality of first black matrixes which are arranged on the light-emitting surface of the active light-emitting layer at intervals, and the first black matrixes and the second black matrixes are arranged in one-to-one correspondence.
Compared with the prior art, the peep-proof mode is uncontrollable, the peep-proof mode of the display device is controllable by arranging the electric control liquid crystal membrane on the light-emitting surface of the peep-proof display panel and controlling whether the electric control liquid crystal in the electric control liquid crystal membrane deflects and orients uniformly, so that the electric control liquid crystal membrane is in a transparent state or a penetrating diffusion state, the display device can be freely switched between the peep-proof mode and the non-peep-proof mode according to the requirement, and the peep-proof mode of the display device is applicable to different display devices.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the application and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the principles of the application. It is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained from these drawings without inventive faculty for a person skilled in the art. In the drawings:
fig. 1 is a schematic structural view of a display device according to a first embodiment of the present application;
fig. 2 is a schematic structural diagram of a specific display device according to the first embodiment of the present application;
fig. 3 is a schematic structural diagram of an electrically controlled liquid crystal film according to a first embodiment of the present application;
FIG. 4 is an enlarged partial schematic view of area A of FIG. 2;
fig. 5 is a schematic structural diagram of a display device according to a second embodiment of the present application;
fig. 6 is a schematic structural diagram of a display device according to a third embodiment of the present application;
fig. 7 is a schematic structural view of a display device according to a fourth embodiment of the present application;
fig. 8 is a schematic structural view of a display device according to a fifth embodiment of the present application;
fig. 9 is a schematic structural diagram of an electrically controlled liquid crystal film according to a sixth embodiment of the present application;
fig. 10 is a schematic structural view of a display device according to a sixth embodiment of the present application;
fig. 11 is a schematic structural view of a display device according to a seventh embodiment of the present application;
fig. 12 is a schematic structural view of another display device of the present application.
1, a display device; 10. a peep-proof display panel; 100. a light converging device; 110. a first black matrix layer; 111. a first black matrix; 120. a second black matrix layer; 121. a second black matrix; 130. a first substrate; 140. a liquid crystal layer; 150. a second substrate; 160. a substrate; 170. an active light emitting layer; 200. an electrically controlled liquid crystal film; 210. an upper substrate; 220. a first transparent electrode layer; 230. an electrically controlled liquid crystal; 240. a second transparent electrode layer; 250. a lower substrate; 260. a cavity; 270. a light shielding structure; 300. a grating lattice membrane; 310. a grating layer shading area; 320. a grating layer light transmission region; 400. an electrically controlled liquid crystal film connector; 500. and a driving circuit.
Detailed Description
It is to be understood that the terminology, specific structural and functional details disclosed herein are merely for the purpose of describing particular corresponding embodiments, and are relatively representative and should not be interpreted as limiting only to the embodiments set forth herein.
The present application is described in detail below with reference to the attached drawings and alternative embodiments.
First embodiment:
fig. 1 is a schematic structural diagram of a display device according to a first embodiment of the present application, as shown in fig. 1, a display device 1 includes a peep-proof display panel 10 and an electrically-controlled liquid crystal film 200, where the peep-proof display panel 10 includes a light-converging device 100 for converging light rays emitted from a light-emitting surface of the peep-proof display panel; the electrically-controlled liquid crystal film 200 comprises electrically-controlled liquid crystal 230, and the electrically-controlled liquid crystal 230 is arranged in the electrically-controlled liquid crystal film 200; the electrically controlled liquid crystal film 200 is disposed on one side of the light emitting surface of the peep-proof display panel 10 and corresponds to the light converging device 100; when the electric control liquid crystal film 200 is electrified, the electric control liquid crystal 230 is uniformly oriented, and the electric control liquid crystal film 200 is in a transparent state; when the electrically-controlled liquid crystal film 200 is not electrified, the electrically-controlled liquid crystal 230 is originally disordered in alignment, and the electrically-controlled liquid crystal film 200 is in a penetrating and diffusing state; the light emitted from the light emitting surface of the display device 1 has a larger visual angle in the penetrating and diffusing state than in the transparent state.
The electronic control liquid crystal film 200 is arranged on the light-emitting surface of the peep-proof display panel 10, and whether the deflection orientation of the electronic control liquid crystal in the electronic control liquid crystal film 200 is uniform is controlled, so that the electronic control liquid crystal film is in a transparent state or a diffusion state, the display device can be switched freely between the peep-proof mode and the non-peep-proof mode as required, the peep-proof mode of the display device 1 is controllable, and the display device can be applied to different display devices 1.
Specifically, fig. 2 is a schematic structural diagram of a specific display device provided in the first embodiment of the present application, as shown in fig. 2, the light beam-splitting device 100 includes a first black matrix layer 110 and a second black matrix 120, where the first black matrix layer 110 is a plurality of first black matrices 111 that are disposed in the peep-proof display panel 10 at intervals; the second black matrixes 120 are a plurality of second black matrixes 121 arranged on the surface of the peep-proof display panel 10, which is close to the electric control liquid crystal film 200, and the first black matrixes 111 and the second black matrixes 121 are arranged in one-to-one correspondence, and when light emitted by the light emitting structure of the peep-proof display panel 10 passes through the peep-proof display panel 10, the first black matrixes 111 and the second black matrixes 121 are matched to be used for converging light so as to display in a narrow viewing angle. The peep-proof display panel 10 further comprises an electric control liquid crystal film connector 400 and a driving circuit 500, wherein the electric control liquid crystal film 200 is connected to a printed circuit board through the electric control liquid crystal film connector 400 and the driving circuit 500, and is driven and controlled to be electrified or not electrified through the printed circuit board; the first black matrix 111 and the second black matrix 121 are spaced apart from each other by a certain distance, so that a light-receiving device 100 having a vertical channel is formed between the two black matrices, and thus, after passing through the peep-proof display panel 10, light is received by the light-receiving device 100 and then emitted into light with a smaller visual angle through the vertical channel, and after being adjusted by the electrically-controlled liquid crystal film 200, the light is emitted from the light-emitting surface of the electrically-controlled liquid crystal film (i.e., is emitted from the light-emitting surface of the display device 1). Specifically, when the printed circuit board controls the electric control liquid crystal film 200 to be electrified, the electric control liquid crystal film 200 is in a transparent state, light rays with smaller visual angles are directly transmitted, and the display device 1 presents a peep-proof picture with a narrow visual angle (namely, a peep-proof mode); when the printed circuit board controls the electric control liquid crystal film 200 not to be electrified, the electric control liquid crystal film 200 is in a penetrating and diffusing state, when the light with a smaller visual angle penetrates through the electric control liquid crystal film, the light is refracted for many times to restore to the light with a larger visual angle (namely, the visual angle in the penetrating and diffusing state is larger than that in the transparent state), and the light is transmitted out from the light emitting surface of the electric control liquid crystal film, so that the display device 1 presents a non-peeping picture with a wide visual angle (namely, a non-peeping mode) and can be freely switched and selected according to the requirement.
Compared with the scheme of firstly converging and then passing through the display panel, the scheme of firstly converging and then passing through the display panel can reflect and refract light rays, the converging effect of the light rays is damaged, the wide viewing angle is still visible, the second black matrix 121 is made on the light emitting surface and is matched with the first black matrix 111 to converge the light rays to the human eyes, the image seen by the human eyes is converged well, and the utilization rate of the light rays with the narrow viewing angle is further improved. The first black matrix 111, which is combined with the second black matrix 121, makes use of the original structure of the display panel, and makes the display panel thinner.
Fig. 3 is a schematic structural diagram of an electrically-controlled liquid crystal film according to a first embodiment of the present application, as shown in fig. 3, the electrically-controlled liquid crystal film 200 further includes an upper substrate 210, a first transparent electrode layer 220, a second transparent electrode layer 240, and a lower substrate 250, where the second transparent electrode layer 240 is disposed on a side of the lower substrate 250 away from a light-emitting surface of the peep-proof display panel 10, the first transparent electrode layer 220 is disposed on a side of the upper substrate 210 near the light-emitting surface of the peep-proof display panel 10, the upper substrate 210 and the lower substrate 250 are disposed opposite to each other to form a cavity 260, and the electrically-controlled liquid crystal 230 is disposed in the cavity 260; the first transparent electrode layer 220 is integrally formed and is entirely laid on the upper substrate 210; the second transparent electrode layer 240 is integrally formed and is entirely laid on the lower substrate 250; the thickness of the electrically controlled liquid crystal 230 is 20um-200um. When the first transparent electrode layer 220 and the second transparent electrode layer 240 are electrified, a high-voltage electric field is generated between the two transparent electrode layers to control the deflection orientation of the electric control liquid crystal 230, under the condition that the orientation of the electric control liquid crystal 230 is uniform, the electric control liquid crystal film 200 presents a transparent state, and when light with smaller visual angle reaches the electric control liquid crystal film 200, the light is directly transmitted from a narrow visual angle, and at the moment, the peeping-preventing display panel 10 presents a peeping-preventing picture with a narrow visual angle (namely, a peeping-preventing mode); when the first transparent electrode layer 220 and the second transparent electrode layer 240 are not electrified, the electrically controlled liquid crystal film 200 is in an original chaotic state, and the electrically controlled liquid crystal film 200 is in a penetrating and diffusing state, and when light with a smaller visual angle reaches the electrically controlled liquid crystal film 200, the light is blocked by the chaotic electrically controlled liquid crystal film 230 and is refracted for multiple times, and at the moment, the light with the smaller visual angle is finally restored to the light with a larger visual angle due to multiple times of refraction and diffusion, and is transmitted from the light emergent surface of the electrically controlled liquid crystal film 200, and the peep-proof display panel 10 presents a non-peep-proof picture (namely a non-peep-proof mode) with a wide visual angle.
Therefore, the peep-proof effect can be selected according to the requirement, and the whole electric control liquid crystal membrane 200 can be covered and applied to the flexible substrate, so that the application is wider; of course, the first transparent electrode layer 220 may be disposed on the upper substrate 210 alone instead of being covered on the whole surface, and in this case, the upper substrate 210 may be a rigid substrate, and may be selectively disposed according to needs and specific situations. When the thickness of the electronically controlled liquid crystal 230 is small, the light reaches the electronically controlled liquid crystal film 200, and the display effect of the whole display device can be reduced while the display with a large viewing angle is realized by displaying in a fog state after multiple refraction, which is equivalent to a thin diffusion sheet.
Fig. 4 is an enlarged partial schematic view of the area a of fig. 2, as shown in fig. 4, in this embodiment, the width of the first black matrix 111 along the extending direction is b1, the width of the second black matrix 121 along the extending direction is b2, the distance between the first black matrix 111 and the second black matrix 121 is h, the distance between the central axes of the first black matrix 111 and the second black matrix 121 along the extending direction is P, the average refractive index of the light propagating between the first black matrix layer 110 and the second black matrix 120 is n, and the angle between the maximum viewing angle of the light and the normal line of the anti-peeping display panel 10 is d after the light passes through the anti-peeping display panel 10 is 2d, 2d=2arcsin { n×sin [ arctan (2P-b 1-b 2)/2 h ] }; wherein 2d is 56 ° or less and more than 0 °. At this time, by setting the widths of the first black matrix 111 and the second black matrix 121 in the extending direction and the interval between the second black matrix 121 and the second black matrix 121, the maximum viewing angle of light can be set within a specific range to achieve the best viewing angle regardless of the variation of the average refractive index of light propagating between the first black matrix layer 110 and the second black matrix 120, and the viewing angle 2d is set to be 56 ° or less and 0 ° or more, at which time the viewing angle is the best viewing angle.
Second embodiment:
fig. 5 is a schematic structural diagram of a display device according to a second embodiment of the present application, and as shown in fig. 5, the difference between the present embodiment and the first embodiment is that the light-converging device 100 includes a first black matrix layer 110 and a second black matrix 120, where the first black matrix layer 110 is a plurality of first black matrices 111 that are disposed in the peep-proof display panel 10 at intervals; the second black matrix 121 is a plurality of second black matrices 121 disposed on the light incident surface of the peep-proof display panel 10 at intervals, the plurality of first black matrices 111 and the plurality of second black matrices 121 are disposed in one-to-one correspondence, and when light is incident on the light incident surface of the peep-proof display panel 10 after being emitted by the light emitting structure of the peep-proof display panel 10, the first black matrices 111 and the second black matrices 121 are matched to receive the light for narrow viewing angle display; when light is injected from the light-in surface, the light is collected and concentrated through the vertical channel, and when the light is bundled, the two transparent electrode layers control the electric control liquid crystal film 200 to switch modes, the light is directly injected, the display device 1 displays the peep-proof state or the non-peep-proof state, the utilization rate of the light is further improved, the light can be fully utilized when being injected, the display effect of the display device 1 is better, the structure of the original first black matrix 111 in the peep-proof display panel 10 is utilized, the stacking thickness of the film layer can be reduced, the thickness of the display panel can be reduced while the peep-proof picture is realized, and the thinning of the display panel is realized.
Third embodiment:
fig. 6 is a schematic structural diagram of a display device according to a third embodiment of the present application, as shown in fig. 6, in which the peep-proof display panel 10 is a liquid crystal display panel, and the peep-proof display panel 10 includes a first substrate 130, a liquid crystal layer 140 and a second substrate 150, where the first substrate 130 and the second substrate 150 are disposed opposite to each other, and the liquid crystal layer 140 is located between the first substrate 130 and the second substrate 150; the first substrate 130 is located on the light incident surface of the liquid crystal layer 140, and the second substrate 150 is located on the light emergent surface of the liquid crystal layer 140; the first black matrix layer 110 is disposed at a side of the first substrate 130 adjacent to the liquid crystal layer 140 or the first black matrix layer 110 is disposed at a side of the second substrate 150 adjacent to the liquid crystal layer 140. The applicability is wider, and the method can be also applied to the liquid crystal display panel, and the light rays are converged after passing through the peep-proof display panel 10, so that the light ray utilization rate is higher.
Fourth embodiment:
fig. 7 is a schematic structural diagram of a display device according to a fifth embodiment of the present application, as shown in fig. 7, in which the light converging device 100 includes a light grid film 300, the light grid film 300 is used for converging light for performing a narrow viewing angle display, the light grid film 300 includes a light shielding area 310 and a light transmitting area 320 of a light grid layer which are alternately arranged, and the light grid film 300 is disposed between the electronically controlled liquid crystal film 200 and the peep-proof display panel 10. The structure of the light grid diaphragm 300 has a certain thickness, the light grid diaphragm 300 is directly arranged, partial light rays can be refracted after being shielded by the grating layer shading area 310 of the light grid diaphragm 300, then the partial light rays and other vertical light rays are emitted again in a smaller angle after being converged by the vertical channel of the grating layer light transmitting area 320, and the peep-proof effect is achieved by the switching mode of the electric control liquid crystal diaphragm 200; the light rays emitted by the light-emitting structure of the peep-proof display panel 10 pass through the display panel first and then finish beam-converging; the light after beam collection has less film layers, less reflection and refraction, good beam collection effect, and better peep-proof effect due to the display of a small visual angle; with the adoption of the embodiment, the grating diaphragm 300 can be directly installed, and the assembly is convenient and quick.
Fifth embodiment:
fig. 8 is a schematic structural diagram of a display device according to a fourth embodiment of the present application, and as shown in fig. 8, the display panel may be an active light emitting display panel, where the active light emitting display panel includes a substrate 160 and an active light emitting layer 170 disposed on the substrate 160, and the first black matrix layer 110 is disposed on a light emitting surface of the active light emitting layer 170. At this time, the grating film 300 may be disposed on the light emitting surface of the display panel, and the light is collected by using the grating film 300 and then matched with the electronically controlled liquid crystal film 200, so as to achieve the anti-peeping effect of the active light emitting display panel, where the light directly emitted by the active light emitting layer 170 may be directly collected, and the light has fewer film layers and less scattered opportunities and higher aggregation property. For example, the display device 1 can be applied to an organic active light emitting diode display device and a micro light emitting diode display device, and other suitable display devices, and has wide application.
Sixth embodiment:
fig. 9 is a schematic structural diagram of an electrically controlled liquid crystal film according to a sixth embodiment of the present application, as shown in fig. 9, the present application further discloses an electrically controlled liquid crystal film 200, which is used for controlling a display panel to switch between a peep-proof mode and a non-peep-proof mode, a first black matrix layer 110 is disposed in the display panel, the first black matrix layer 110 is a plurality of first black matrixes 111 disposed at intervals, the electrically controlled liquid crystal film 200 includes a plurality of light shielding structures 270 disposed at intervals, and the light shielding structures 270 are disposed in the electrically controlled liquid crystal film 200 and are disposed in one-to-one correspondence with the first black matrixes 111, and cooperate to receive light emitted by the display panel. Wherein, the light shielding structure 270 includes a plurality of second black matrixes 121 arranged at intervals. In this way, the second black matrix 121 in the electrically controlled liquid crystal film 200 and the first black matrix 111 can be directly utilized to combine and collect light, when the electrically controlled liquid crystal film is applied to the display device 1, the manufacturing process and thickness of one film layer in the display panel can be reduced, so that the thickness of the display panel is reduced, and the display device 1 is thinner; moreover, the peep-proof effect is controllable, and the application range is wide.
Specifically, fig. 10 is a schematic structural diagram of a display device according to a sixth embodiment of the present application, as shown in fig. 10, where the display panel is a liquid crystal display panel, and the liquid crystal display panel includes a first substrate 130, a first black matrix layer 110, a liquid crystal layer 140, and a second substrate 150, where the first substrate 130 and the second substrate 150 are disposed opposite to each other, and the liquid crystal layer 140 is located between the first substrate 130 and the second substrate 150; the first substrate 130 is located on the light incident surface of the liquid crystal layer 140, and the second substrate 150 is located on the light emergent surface of the liquid crystal layer 140; the first black matrix layer 110 is disposed on a side of the first substrate 130 close to the liquid crystal layer 140 or the first black matrix layer 110 is disposed on a side of the second substrate 150 close to the liquid crystal layer 140, the first black matrix layer 110 includes a plurality of first black matrixes 111 disposed at intervals, and the first black matrixes 111 and the second black matrixes 121 are disposed in one-to-one correspondence. The principle and effect of converging light can refer to the third embodiment, and will not be described in detail here.
Seventh embodiment:
fig. 11 is a schematic structural diagram of a display device according to a seventh embodiment of the present application, as shown in fig. 11, where the display panel is an active light emitting display panel, and the display panel includes a substrate 160, an active light emitting layer 170 and a first black matrix layer 110, where the active light emitting layer 170 is disposed on the substrate 160, the first black matrix layer 110 is a plurality of first black matrixes 111 disposed on a light emitting surface of the active light emitting layer 170 at intervals, and the first black matrixes 111 are disposed in one-to-one correspondence with the second black matrixes 121. The display device 1 suitable for active light emission has wider applicability, and the original structure of the active light emitting display panel is utilized, so that compared with the use of the grating diaphragm 300, the thickness of the display panel is relatively reduced, and the display device is thinner.
Fig. 12 is a schematic structural diagram of another display device of the present application, and as shown in fig. 12, the present application further discloses a display device 1, including an electrically-controlled liquid crystal film 200 and a display panel according to the sixth embodiment, where the electrically-controlled liquid crystal film 200 is disposed on one side of a light emitting surface of the display panel, and is disposed corresponding to a black matrix in the display panel, and is configured to receive light emitted from the light emitting surface of the display panel, so as to perform narrow viewing angle display. The display device 1 with the peep-proof function is formed by directly utilizing the electric control liquid crystal membrane 200 with the second black matrix 121 arranged inside and a common display panel, and is convenient to assemble and disassemble and convenient to use.
It should be noted that the inventive concept of the present application is not limited to the above description, but the application documents are limited in space and cannot be listed one by one; it should be understood that those skilled in the art to which the present application pertains may make several simple deductions or substitutions without departing from the spirit of the present application, and all such deductions or substitutions should be considered to be within the scope of the present application.
Claims (3)
1. The display device comprises an electric control liquid crystal film, and is characterized by further comprising a peep-proof display panel, wherein the peep-proof display panel comprises a light converging device for converging light rays emitted from a light emitting surface of the peep-proof display panel; the electric control liquid crystal membrane comprises electric control liquid crystal, and the electric control liquid crystal is arranged in the electric control liquid crystal membrane;
the electric control liquid crystal membrane is arranged on one side of the light emitting surface of the peep-proof display panel and corresponds to the light converging device; when the electric control liquid crystal membrane is electrified, the electric control liquid crystal is uniform in orientation, and the electric control liquid crystal membrane is in a transparent state; when the electric control liquid crystal membrane is not electrified, the electric control liquid crystal is originally disordered in orientation, and the electric control liquid crystal membrane is in a penetrating and diffusing state;
the light emitted from the light emitting surface of the display device has a larger visual angle in a penetrating and diffusing state than in a transparent state;
the light converging device comprises a first black matrix layer and a second black matrix layer, wherein the first black matrix layer is a plurality of first black matrixes which are arranged in the peep-proof display panel at intervals;
the second black matrix layer is a plurality of second black matrixes which are arranged on the surface of the peep-proof display panel, close to the electric control liquid crystal membrane, at intervals, the first black matrixes and the second black matrixes are arranged in one-to-one correspondence, and when light rays emitted by the light emitting structure of the peep-proof display panel pass through the peep-proof display panel, the first black matrixes and the second black matrixes are matched for converging the light rays so as to display in a narrow visual angle;
or the light beam converging device comprises a first black matrix layer and a second black matrix layer, wherein the first black matrix layer is a plurality of first black matrixes which are arranged in the peep-proof display panel at intervals;
the second black matrixes are a plurality of second black matrixes which are arranged on the light incident surface of the peep-proof display panel at intervals, the plurality of first black matrixes and the plurality of second black matrixes are arranged in one-to-one correspondence, and when light is emitted from the light emitting structure of the peep-proof display panel and then enters the light incident surface of the peep-proof display panel, the first black matrixes and the second black matrixes are matched for converging the light so as to perform narrow-view display;
the width of the first black matrix along the extending direction is b1, the width of the second black matrix along the extending direction is b2, the distance between the first black matrix and the second black matrix is h, the distance between the central axes of the first black matrix and the second black matrix along the extending direction is P, the average refractive index of light transmitted between the first black matrix layer and the second black matrix layer is n, after the light passes through the peep-proof display panel, the included angle between the maximum visual angle of the light and the normal line of the peep-proof display panel is d, and then the maximum visual angle is 2d=2arcsin { n sin [ arctan (2P-b 1-b 2)/2 h ] };
wherein 2d is 56 ° or less and more than 0 °.
2. The display device of claim 1, wherein the privacy display panel is a liquid crystal display panel, the privacy display panel comprising a first substrate, a liquid crystal layer, and a second substrate, the first substrate and the second substrate being disposed opposite one another, the liquid crystal layer being located between the first substrate and the second substrate; the first substrate is positioned on the light incident surface of the liquid crystal layer, and the second substrate is positioned on the light emergent surface of the liquid crystal layer; the first black matrix layer is arranged on one side of the first substrate close to the liquid crystal layer or one side of the second substrate close to the liquid crystal layer.
3. The display device of claim 1, the electrically controlled liquid crystal film further comprising an upper substrate, a first transparent electrode layer, a second transparent electrode layer and a lower substrate, wherein the second transparent electrode layer is arranged on one side of the lower substrate away from the light-emitting surface of the peep-proof display panel, the first transparent electrode layer is arranged on one side of the upper substrate close to the light-emitting surface of the peep-proof display panel, the upper substrate and the lower substrate are oppositely arranged to form a cavity, and the electrically controlled liquid crystal is arranged in the cavity;
the first transparent electrode layer is integrally formed and is paved on the upper substrate in the whole surface; the second transparent electrode layer is integrally formed and is paved on the lower substrate in whole;
the thickness of the electric control liquid crystal is 20um-200um.
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| JP2005266215A (en) * | 2004-03-18 | 2005-09-29 | Toshiba Matsushita Display Technology Co Ltd | Liquid crystal display device and resistance detection type touch panel |
| JP2019095652A (en) * | 2017-11-24 | 2019-06-20 | Ｔｉａｎｍａ Ｊａｐａｎ株式会社 | Display equipment |
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| KR101268954B1 (en) * | 2006-06-29 | 2013-05-30 | 엘지디스플레이 주식회사 | Liquid crystal display controllable viewing angle and manufacturing method thereof |
| CN105549236B (en) * | 2016-02-19 | 2020-05-12 | 京东方科技集团股份有限公司 | Switchable peep-proof device, preparation method thereof and display device |
| CN106873283A (en) * | 2017-03-17 | 2017-06-20 | 京东方科技集团股份有限公司 | Display device, display device and display methods |
| JP7011157B2 (en) * | 2017-11-24 | 2022-01-26 | Ｔｉａｎｍａ Ｊａｐａｎ株式会社 | Display device manufacturing method and display device |
| CN112711152A (en) * | 2020-12-31 | 2021-04-27 | 武汉华星光电技术有限公司 | Liquid crystal display panel and liquid crystal display device |
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| JP2005266215A (en) * | 2004-03-18 | 2005-09-29 | Toshiba Matsushita Display Technology Co Ltd | Liquid crystal display device and resistance detection type touch panel |
| JP2019095652A (en) * | 2017-11-24 | 2019-06-20 | Ｔｉａｎｍａ Ｊａｐａｎ株式会社 | Display equipment |
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