Self-luminous display device with switchable wide and narrow visual angles

Abstract

The utility model discloses a wide-narrow visual angle switchable self-luminous display device which comprises a first self-luminous display panel, a second self-luminous display panel and a peep-proof structure arranged between the first self-luminous display panel and the second self-luminous display panel. The first self-luminous display panel, the peep-proof structure and the second self-luminous display panel are sequentially arranged in a stacked mode in the direction facing the light emitting side, and the peep-proof structure is used for narrowing the angle range of light emitted by the second self-luminous display panel. In the wide-view-angle mode, the first self-luminous display panel is in an open state, the second self-luminous display panel is in a closed state, and wide-view-angle display is achieved through the first self-luminous display panel; in the narrow-view-angle mode, the first self-luminous display panel is in a closed state, the second self-luminous display panel is in an open state, narrow-view-angle display is achieved by matching the second self-luminous display panel with the peep-proof structure, and therefore switching between the wide-view-angle mode and the narrow-view-angle mode is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of displays, in particular to a self-luminous display device with switchable wide and narrow viewing angles. Background Art

[0002] With the development of the information age, the application of display screens has become increasingly broad and diversified, and various technical display screens have also flourished. Self-luminous displays are the next generation of displays after LCD (liquid crystal display). They have the advantages of good image quality, small size, light weight, low driving voltage, low power consumption, no radiation and relatively low manufacturing cost. Their development and application are becoming more and more extensive. Self-luminous displays include, for example, OLED (Organic Light-Emitting Diode) displays and Micro LED (micro light-emitting diode) displays.

[0003] Generally, due to the characteristics of self-luminescence, self-luminous displays have a wide viewing angle and high color saturation. The viewing angle of self-luminous displays can reach more than 160°. While enjoying the wide viewing angle experience, people also hope to effectively protect business secrets and personal privacy to avoid business losses or embarrassment caused by the leakage of screen information. Therefore, in addition to the demand for wide viewing angles, in many occasions, display devices are also required to have the function of switching between wide and narrow viewing angles.

[0004] At present, the main method is to attach a louver film to the self-luminous display to achieve wide and narrow viewing angle switching. When anti-peeping is needed, the screen can be covered with the louver film to narrow the viewing angle. However, this method requires additional louver film, which will cause great inconvenience to the user. Moreover, a louver film can only achieve one viewing angle. Once the louver film is attached, the viewing angle is fixed in the narrow viewing angle mode, resulting in the inability to switch freely between the wide viewing angle mode and the narrow viewing angle mode. In addition, the anti-peeping film will reduce the brightness and affect the quality. Utility Model Content

[0005] In order to overcome the shortcomings and deficiencies in the prior art, the purpose of the present invention is to provide a self-luminous display device with switchable wide and narrow viewing angles, so as to solve the problem that the self-luminous display device in the prior art cannot freely switch between wide and narrow viewing angles.

[0006] The purpose of the utility model is achieved through the following technical solutions:

[0007] The utility model provides a self-luminous display device with switchable wide and narrow viewing angles, comprising a first self-luminous display panel, a second self-luminous display panel, and an anti-peeping structure arranged between the first self-luminous display panel and the second self-luminous display panel, wherein the first self-luminous display panel, the anti-peeping structure, and the second self-luminous display panel are stacked in sequence in the direction of the light emitting side, and the anti-peeping structure is used to reduce the angle range of light emitted by the second self-luminous display panel;

[0008] In the wide viewing angle mode, the first self-luminous display panel is in an on state, and the second self-luminous display panel is in a off state; in the narrow viewing angle mode, the first self-luminous display panel is in a off state, and the second self-luminous display panel is in an on state.

[0009] Furthermore, the first self-luminous display panel has a plurality of first pixel unit areas distributed in an array, each of the first pixel unit areas having at least one first sub-pixel, and the second self-luminous display panel has a plurality of second pixel unit areas distributed in an array, each of the second pixel unit areas having at least one second sub-pixel, and the projection of the first pixel unit area on the second self-luminous display panel corresponds one-to-one to the second pixel unit area.

[0010] Furthermore, each of the first pixel unit regions is provided with one of the first sub-pixels, and a projection of each of the first sub-pixels on the second self-luminous display panel corresponds to at least one of the second sub-pixels.

[0011] Furthermore, a transparent area is provided in each of the first pixel unit areas, and a projection of each of the second sub-pixels on the first self-luminous display panel corresponds to the first sub-pixel and the transparent area.

[0012] Furthermore, a transparent area is provided in each of the first pixel unit areas, and a blank area is provided in each of the second pixel unit areas. The projection of the first sub-pixel on the second self-luminous display panel corresponds to the blank area, and the projection of the second sub-pixel on the first self-luminous display panel corresponds to the transparent area.

[0013] Further, each of the first pixel unit regions has one first sub-pixel, and each of the second pixel unit regions has one second sub-pixel;

[0014] Or, three first sub-pixels are provided in each of the first pixel unit areas, and the three first sub-pixels are arranged near one of the vertex corners of the first pixel unit area; three second sub-pixels are provided in each of the second pixel unit areas, and the three second sub-pixels are arranged near one of the vertex corners of the second pixel unit area; and the projection of the first sub-pixel on the second self-luminous display panel is completely staggered with the second sub-pixel;

[0015] Or, six first sub-pixels are provided in each of the first pixel unit areas, and the six first sub-pixels are arranged near two opposite vertex corners of the first pixel unit area; six second sub-pixels are provided in each of the second pixel unit areas, and the six second sub-pixels are arranged near two opposite vertex corners of the second pixel unit area; and the projection of the first sub-pixel on the second self-luminous display panel is completely staggered with the second sub-pixel.

[0016] Furthermore, the anti-peep structure has a plurality of light-blocking walls and a light-transmitting gap between two adjacent light-blocking walls, the width of the light-blocking walls is 10-15 um, the width of the light-transmitting gap is 40-80 um, and the width of the light-transmitting gap is greater than the width of the second sub-pixel in the second self-luminous display panel.

[0017] Furthermore, the anti-peeping structure includes a first anti-peeping layer and a second anti-peeping layer, and the light collecting directions of the first anti-peeping layer and the second anti-peeping layer are perpendicular to each other.

[0018] Furthermore, the first self-luminous display panel is an OLED display panel or a Micro LED display panel, and the second self-luminous display panel is an OLED display panel or a Micro LED display panel.

[0019] Furthermore, a circular polarizer is provided on a side of the first self-luminous display panel close to the light emitting side, the circular polarizer comprises a quarter wave plate and a linear polarizer, and the linear polarizer is provided on a side of the quarter wave plate away from the first self-luminous display panel.

[0020] The beneficial effect of the utility model is that: through the anti-peep structure between the first self-luminous display panel and the second self-luminous display panel, in the wide viewing angle mode, the first self-luminous display panel is in an open state, and the second self-luminous display panel is in a closed state, and the wide viewing angle display is achieved through the first self-luminous display panel; in the narrow viewing angle mode, the first self-luminous display panel is in a closed state, and the second self-luminous display panel is in an open state, and the narrow viewing angle display is achieved through the second self-luminous display panel with the anti-peep structure. Therefore, switching between the wide viewing angle mode and the narrow viewing angle mode can be achieved by turning the first self-luminous display panel and the second self-luminous display panel on or off. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the self-luminous display device in the first embodiment of the utility model in the initial state;

[0022] Figure 2 is a schematic structural diagram of the self-luminous display device in the first embodiment of the present utility model in a wide viewing angle mode;

[0023] Figure 3 is a schematic structural diagram of the self-luminous display device in the first embodiment of the present utility model in a narrow viewing angle mode;

[0024] Figure 4 This is a schematic diagram of the pixel arrangement of the first self-luminous display panel in the first embodiment of the present utility model;

[0025] Figure 5 This is a schematic diagram of the pixel arrangement of the second self-luminous display panel in the first embodiment of the present utility model;

[0026] Figure 6 It is a structural schematic diagram of the self-luminous display device in the second embodiment of the present utility model in the initial state;

[0027] Figure 7 This is a schematic diagram of the pixel arrangement of the first self-luminous display panel in the second embodiment of the present utility model;

[0028] Figure 8 It is a schematic structural diagram of the self-luminous display device in the initial state in the third embodiment of the present utility model;

[0029] Fig. 9 This is a schematic diagram of the pixel arrangement of the second self-luminous display panel in the third embodiment of the present utility model;

[0030] Fig.10 This is one of the pixel arrangement diagrams of the first self-luminous display panel in another implementation manner of the third embodiment of the present utility model;

[0031] Fig.11 This is one of the pixel arrangement diagrams of the second self-luminous display panel in another implementation manner of the third embodiment of the present utility model;

[0032] Fig.12 This is the second schematic diagram of the pixel arrangement of the first self-luminous display panel in another implementation manner of the third embodiment of the utility model;

[0033] Fig.13 This is the second pixel arrangement diagram of the second self-luminous display panel in another implementation manner of the third embodiment of the present utility model;

[0034] Fig.14 It is a structural schematic diagram of the self-luminous display device in the fourth embodiment of the utility model in the initial state;

[0035] Fig.15 It is a structural schematic diagram of the self-luminous display device in the fifth embodiment of the present utility model in the initial state;

[0036] Fig.16 It is a structural schematic diagram of the self-luminous display device in the sixth embodiment of the present utility model in the initial state;

[0037] Fig.17 This is one of the planar structural schematic diagrams of the self-luminous display device in the utility model;

[0038] Fig.18 This is the second schematic diagram of the planar structure of the self-luminous display device in the utility model. DETAILED DESCRIPTION

[0039] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose of the present invention, the specific implementation, structure, features and effects of the self-luminous display device with switchable wide and narrow viewing angles proposed by the present invention are described in detail below in conjunction with the accompanying drawings and preferred embodiments:

[0040] [Example 1]

[0041] Figure 1 It is a structural schematic diagram of the self-luminous display device in the first embodiment of the present utility model in the initial state. Figure 2 It is a schematic structural diagram of the self-luminous display device in the first embodiment of the utility model in a wide viewing angle mode. Figure 3 It is a schematic structural diagram of the self-luminous display device in the first embodiment of the present invention in a narrow viewing angle mode.

[0042] like Figures 1 to 3 As shown, a self-luminous display device with switchable wide and narrow viewing angles provided in Embodiment 1 of the utility model includes a first self-luminous display panel 10, a second self-luminous display panel 30, and an anti-peeping structure 20 arranged between the first self-luminous display panel 10 and the second self-luminous display panel 30. The first self-luminous display panel 10, the anti-peeping structure 20 and the second self-luminous display panel 30 are stacked in sequence toward the light emitting side, and the anti-peeping structure 20 is used to narrow the angle range of light emitted by the second self-luminous display panel 30.

[0043] like Figure 2 As shown, in the wide viewing angle mode, the first self-luminous display panel 10 is in an open state, and the second self-luminous display panel 30 is in a closed state, and a normal wide viewing angle display is achieved through the first self-luminous display panel 10. Figure 3As shown, in the narrow viewing angle mode, the first self-luminous display panel 10 is in a closed state, at which time the first self-luminous display panel 10 is in a transparent state, and the second self-luminous display panel 30 is in an open state, and the second self-luminous display panel 30 displays the picture normally, and the light emitted by the second self-luminous display panel 30 passes through the light collecting effect of the anti-peeping structure 20 and is emitted from the first self-luminous display panel 10, thereby realizing narrow viewing angle display. By turning the first self-luminous display panel 10 and the second self-luminous display panel 30 on or off, switching between the wide viewing angle mode and the narrow viewing angle mode can be realized.

[0044] In this embodiment, the first self-luminous display panel 10 and the second self-luminous display panel 30 are both OLED display panels. The first self-luminous display panel 10 includes a first substrate 11, a first anode 12 and a first cathode 14 disposed on the first substrate 11, and a first organic light-emitting layer 13 located between the first anode 12 and the first cathode 14. The corresponding electrical signal is applied to the first anode 12 and the first cathode 14 to control the corresponding first organic light-emitting layer 13 to emit light. The second self-luminous display panel 30 includes a second substrate 31, a second anode 32 and a second cathode 34 disposed on the second substrate 31, and a second organic light-emitting layer 33 located between the second anode 32 and the second cathode 34. The corresponding electrical signal is applied to the second anode 32 and the second cathode 34 to control the corresponding second organic light-emitting layer 33 to emit light. Among them, the first substrate 11 and the second substrate 31 can be made of transparent materials such as glass, acrylic acid and polycarbonate, and the materials of the first anode 12, the first cathode 14, the second anode 32 and the second cathode 34 can be indium tin oxide (ITO) or indium zinc oxide (IZO). Optionally, a reflective film (not shown) may be coated on the surface of the second substrate 31 to improve the utilization of light. As for other structures of the OLED display panel (such as scan lines, data lines, thin film transistors, etc.), reference may be made to the prior art and will not be repeated here.

[0045] The anti-peeping structure 20 has a plurality of light-blocking walls 21 and a light-transmitting gap 22 between two adjacent light-blocking walls 21. The width of the light-blocking wall 21 is 10-15um, the width of the light-transmitting gap 22 is 40-80um, and the width of the light-transmitting gap 22 is greater than the width of the second sub-pixel P2 in the second self-luminous display panel 30. The light-blocking wall 21 can absorb the light irradiated thereon, and the light-collecting angle of the anti-peeping structure 20 can be controlled by adjusting the size of the light-transmitting gap 22. In this embodiment, the anti-peeping structure 20 uses an existing anti-peeping film to be pasted between the first self-luminous display panel 10 and the second self-luminous display panel 30. For example, one side of the anti-peeping film can be pasted to the surface of the first self-luminous display panel 10, and then the other side of the anti-peeping film can be pasted to the surface of the second self-luminous display panel 30. The light-collecting direction of the anti-peeping structure 20 is left-right light collection or top-down light collection, so that left-right anti-peeping or top-down anti-peeping can be achieved in the narrow viewing angle mode.

[0046] In this embodiment, a circular polarizer 40 is provided on the side of the first self-luminous display panel 10 close to the light-emitting side. The circular polarizer 40 includes a quarter-wave plate 41 and a linear polarizer 42. The linear polarizer 42 is provided on the side of the quarter-wave plate 41 away from the first self-luminous display panel 10. The fast and slow axes of the quarter-wave plate 41 and the light transmission axis of the linear polarizer 42 are 45°, so that the ambient light passing through the circular polarizer 40 can be converted into circularly polarized light. By providing the circular polarizer 41 on the side of the first self-luminous display panel 10 close to the light-emitting side, the reflection effect of the metal electrodes (scanning lines, data lines, gates, source and drain electrodes, etc.) in the self-luminous display device on the ambient light can be reduced to increase the display effect. For example, when ambient light passes through the linear polarizer 42, linear polarized light (0°) parallel to the transmission axis of the linear polarizer 42 is formed. When the linear polarized light passes through the quarter-wave plate 41, it becomes circularly polarized light (positive rotation). After the circularly polarized light (positive rotation) is reflected by the metal electrode in the self-luminous display device, it is still circularly polarized light (negative rotation), but the rotation direction is opposite. When the reflected circularly polarized light (negative rotation) passes through the quarter-wave plate 41, it becomes linear polarized light (90°) perpendicular to the transmission axis of the linear polarizer 42, and is thereby absorbed by the linear polarizer 42, thereby reducing the reflection effect of the self-luminous display device on ambient light and increasing the display effect.

[0047] Figure 4 It is a schematic diagram of the pixel arrangement of the first self-luminous display panel in the first embodiment of the present invention. Figure 5 Schematic diagram of the pixel arrangement of the second self-luminous display panel in the first embodiment of the present invention. Figure 4 and Figure 5As shown, the first self-luminous display panel 10 has a plurality of first pixel unit areas C1 distributed in an array, and at least one first sub-pixel P1 is provided in each first pixel unit area C1. The second self-luminous display panel 30 has a plurality of second pixel unit areas C2 distributed in an array, and at least one second sub-pixel P2 is provided in each second pixel unit area C2, and the projection of the first pixel unit area C1 on the second self-luminous display panel 30 corresponds to the second pixel unit area C2 one by one. Among them, the first sub-pixel P1 and the second sub-pixel P2 both have a red sub-pixel R, a green sub-pixel G, and a blue sub-pixel B, thereby emitting red light, green light, and blue light respectively, and realizing color display according to the principle of mixing the three primary colors of light.

[0048] Further, each first pixel unit area C1 is provided with a first sub-pixel P1, and the projection of each first sub-pixel P1 on the second self-luminous display panel 30 corresponds to at least one second sub-pixel P2. In the present embodiment, each second pixel unit area C2 is provided with a second sub-pixel P2, and the projection of the first sub-pixel P1 on the second self-luminous display panel 30 corresponds to the second sub-pixel P2 one by one. Of course, in other embodiments, each second pixel unit area C2 may be provided with a plurality of second sub-pixels P2, and the projection of each first sub-pixel P1 on the second self-luminous display panel 30 may correspond to a plurality of (for example, two, four, etc.) second sub-pixels P2, therefore, the size of the first sub-pixel P1 is larger than the size of the second sub-pixel P2, and the number of the first sub-pixels P1 is smaller than the number of the second sub-pixels P2, that is, the resolution of the first self-luminous display panel 10 is smaller than the resolution of the second self-luminous display panel 30.

[0049] [Example 2]

[0050] Figure 6 It is a structural schematic diagram of the self-luminous display device in the second embodiment of the present utility model in the initial state. Figure 7 Schematic diagram of the pixel arrangement of the first self-luminous display panel in the second embodiment of the present utility model. Figure 6 and Figure 7 As shown, the self-luminous display device with switchable wide and narrow viewing angles provided in the second embodiment of the present invention is different from the self-luminous display device in the first embodiment ( Figures 1 to 5 ) are substantially the same as the self-luminous display device with switchable wide and narrow viewing angles, except that, in this embodiment:

[0051] A transparent area T1 is also provided in each first pixel unit area C1, and the projection of each second sub-pixel P2 on the first self-luminous display panel 10 corresponds to the first sub-pixel P1 and the transparent area T1. That is, in the present embodiment, a first sub-pixel P1 and a transparent area T1 are provided in each first pixel unit area C1, and a second sub-pixel P2 is provided in each second pixel unit area C2, and the projection of a second sub-pixel P2 on the first self-luminous display panel 10 corresponds to a first sub-pixel P1 and a transparent area T1. Since the transparency of the transparent OLED products exhibited by major OLED factories at home and abroad can reach 60%, but the transparency is relatively small, in the narrow viewing angle mode, the first self-luminous display panel 10 will still affect the transmittance of the light emitted by the second self-luminous display panel 30. Therefore, a transparent area T1 is provided in each first pixel unit area C1, which can increase the transmittance of the light emitted by the second self-luminous display panel 30 and improve the brightness of the narrow viewing angle display.

[0052] It should be understood by those skilled in the art that the rest of the structure and working principle of this embodiment are the same as those of the first embodiment and will not be described in detail here.

[0053] [Example 3]

[0054] Figure 8 It is a schematic structural diagram of the self-luminous display device in the initial state in the third embodiment of the present utility model. Fig. 9 Schematic diagram of the pixel arrangement of the second self-luminous display panel in the third embodiment of the present utility model. Figure 8 and Fig. 9 As shown, the self-luminous display device with switchable wide and narrow viewing angles provided in the third embodiment of the present invention is different from the self-luminous display device in the first embodiment ( Figures 1 to 5 ) are substantially the same as the self-luminous display device with switchable wide and narrow viewing angles, except that, in this embodiment:

[0055] Each first pixel unit area C1 also has a transparent area T1 (refer to Figure 7 ), a blank area T2 is also provided in each second pixel unit area C2, the projection of the first sub-pixel P1 on the second self-luminous display panel 30 corresponds to the blank area T2, and the projection of the second sub-pixel P2 on the first self-luminous display panel 10 corresponds to the transparent area T1.

[0056] In the present embodiment, a first sub-pixel P1 is provided in each first pixel unit area C1, and a second sub-pixel P2 is provided in each second pixel unit area C2. The projection of the first sub-pixel P1 on the second self-luminous display panel 30 is completely staggered with the second sub-pixel P2, which can avoid the first self-luminous display panel 10 affecting the transmittance of light emitted by the second self-luminous display panel 30 to a greater extent.

[0057] Fig.10This is one of the pixel arrangement diagrams of the first self-luminous display panel in another implementation manner of the third embodiment of the present invention. Fig.11 This is one of the pixel arrangement diagrams of the second self-luminous display panel in another implementation of the third embodiment of the utility model. In another embodiment, Fig.10 and Fig.11 As shown, three first sub-pixels P1 are provided in each first pixel unit area C1, and the three first sub-pixels P1 are arranged near one of the vertex corners of the first pixel unit area C1, and the three first sub-pixels P1 are respectively a red sub-pixel R, a green sub-pixel G, and a blue sub-pixel B. Three second sub-pixels P2 are provided in each second pixel unit area C2, and the three second sub-pixels P2 are arranged near one of the vertex corners of the second pixel unit area C2, and the three second sub-pixels P2 are respectively a red sub-pixel R, a green sub-pixel G, and a blue sub-pixel B. The projection of the first sub-pixel P1 on the second self-luminous display panel 30 is completely staggered with the second sub-pixel P2.

[0058] Fig.12 This is the second pixel arrangement diagram of the first self-luminous display panel in another implementation manner of the third embodiment of the utility model. Fig.13 This is the second schematic diagram of the pixel arrangement of the second self-luminous display panel in another implementation manner of the third embodiment of the present utility model. Fig.12 and Fig.13 As shown, six first sub-pixels P1 are provided in each first pixel unit area C1, and the six first sub-pixels P1 are arranged near two opposite vertex corners of the first pixel unit area C1, and the six first sub-pixels P1 are two red sub-pixels R, two green sub-pixels G, and two blue sub-pixels B. Six second sub-pixels P2 are provided in each second pixel unit area C2, and the six second sub-pixels P2 are arranged near two opposite vertex corners of the second pixel unit area C2, and the six second sub-pixels P2 are two red sub-pixels R, two green sub-pixels G, and two blue sub-pixels B. The projection of the first sub-pixel P1 on the second self-luminous display panel 30 is completely staggered with the second sub-pixel P2.

[0059] It should be understood by those skilled in the art that the rest of the structure and working principle of this embodiment are the same as those of the first embodiment and will not be described in detail here.

[0060] [Example 4]

[0061] Fig.14 Schematic diagram of the structure of the self-luminous display device in the fourth embodiment of the present utility model in the initial state. Fig.14 As shown, the self-luminous display device with a wide and narrow viewing angle switchable provided by the fourth embodiment of the utility model is different from the one in the first embodiment ( Figures 1 to 5 )、Example 2 ( Figure 6 to Figure 7 )、Example 3 ( Figures 8 to 13) are substantially the same as the self-luminous display device with switchable wide and narrow viewing angles, except that, in this embodiment:

[0062] The anti-peeping structure 20 includes a first anti-peeping layer 20a and a second anti-peeping layer 20b. The light collecting directions of the first anti-peeping layer 20a and the second anti-peeping layer 20b are perpendicular to each other. For example, the light collecting direction of the first anti-peeping layer 20a is left-right light collecting, and the light collecting direction of the second anti-peeping layer 20b is up-down light collecting, thereby realizing an all-round narrow viewing angle mode to enhance the anti-peeping effect.

[0063] It should be understood by those skilled in the art that the rest of the structure and working principle of this embodiment are the same as those of Embodiment 1, Embodiment 2, and Embodiment 3, and will not be described in detail here.

[0064] [Example 5]

[0065] Fig.15 Schematic diagram of the structure of the self-luminous display device in the fifth embodiment of the present utility model in the initial state. Fig.15 As shown, the self-luminous display device with switchable wide and narrow viewing angles provided in the fifth embodiment of the present invention is different from the self-luminous display device in the first embodiment ( Figures 1 to 5 )、Example 2 ( Figure 6 to Figure 7 )、Example 3 ( Figures 8 to 13 ), Embodiment 4 ( Fig.14 ) are substantially the same as the self-luminous display device with switchable wide and narrow viewing angles, except that, in this embodiment:

[0066] The first self-luminous display panel 10 and the second self-luminous display panel 30 are both Micro LED display panels. The first self-luminous display panel 10 includes a first substrate 11, a first control circuit layer 15 disposed on the first substrate 11, and a plurality of first light-emitting units 16, the first control circuit layer 15 is used to control the first light-emitting unit 16 to emit light of corresponding colors. The second self-luminous display panel 30 includes a second substrate 31, a second control circuit layer 35 disposed on the second substrate 31, and a plurality of second light-emitting units 36, the second control circuit layer 35 is used to control the second light-emitting unit 36 ​​to emit light of corresponding colors. As for other structures of the MicroLED display panel (such as scan lines, data lines, thin film transistors, etc.), reference can be made to the prior art and will not be repeated here.

[0067] Among them, major domestic and foreign manufacturers have developed Micro LED transparent display products with a transparency of up to 65%, which is higher than the transparency of OLED display panels, so as to reduce the transmittance of the light emitted by the second self-luminous display panel 30 affected by the first self-luminous display panel 10.

[0068] It should be understood by those skilled in the art that the rest of the structure and working principle of this embodiment are the same as those of Embodiment 1, Embodiment 2, Embodiment 3, and Embodiment 4, and will not be described in detail here.

[0069] In the embodiment, one of the first self-luminous display panel 10 and the second self-luminous display panel 30 may be set as a Micro LED display panel, and the other one may be set as an OLED display panel, without limitation.

[0070] [Example 6]

[0071] Fig.16 Schematic diagram of the structure of the self-luminous display device in the sixth embodiment of the present utility model in the initial state. Fig.16 As shown, the self-luminous display device with switchable wide and narrow viewing angles provided in the sixth embodiment of the present invention is different from the self-luminous display device in the first embodiment ( Figures 1 to 5 )、Example 2 ( Figure 6 to Figure 7 )、Example 3 ( Figures 8 to 13 ), Embodiment 4 ( Fig.14 )、Example 5 ( Fig.15 ) are substantially the same as the self-luminous display device with switchable wide and narrow viewing angles, except that, in this embodiment:

[0072] The anti-peeping structure 20 is formed on the first substrate 11 by using a grating manufacturing process, and the light blocking wall 21 is a grating structure manufactured on the first substrate 11. For example, a pattern defining the light blocking wall 21 is manufactured by using black ink through a process such as screen printing, and a transparent flat layer (transparent ink, OC or other resin materials) is covered on the light blocking wall 21, and a light-transmitting gap 22 is formed between two adjacent light blocking walls 21. In this embodiment, the anti-peeping structure 20 is manufactured by using a screen printing process, which can reduce the thickness of the self-luminous display device, and is more conducive to the development of lightness and thinness.

[0073] It should be understood by those skilled in the art that the remaining structures and working principles of this embodiment are the same as those of Embodiment 1, Embodiment 2, Embodiment 3, Embodiment 4, and Embodiment 5, and will not be described in detail here.

[0074] Fig.17 It is one of the planar structural schematic diagrams of the self-luminous display device in the utility model. Fig.18 This is the second schematic diagram of the planar structure of the self-luminous display device in the utility model. Fig.17 and Fig.18 The self-luminous display device is provided with a viewing angle switching button 50 for allowing a user to send a viewing angle switching request to the self-luminous display device. The viewing angle switching button 50 may be a physical button (such as Fig.17 As shown), it can also be a software control or application (APP) to implement the switching function (such as Fig.18As shown, the wide and narrow viewing angles are set by sliding the bar). When the user needs to switch between a wide viewing angle and a narrow viewing angle, the user can send a viewing angle switching request to the self-luminous display device by operating the viewing angle switching button 50, and finally the driver chip 60 controls the opening and closing states of the first self-luminous display panel 10 and the second self-luminous display panel 30, so that the self-luminous display device can switch between a wide viewing angle and a narrow viewing angle. When switching to a wide viewing angle, the driving method thereof adopts the driving method corresponding to the wide-angle mode, and when switching to a narrow viewing angle, the driving method thereof adopts the driving method corresponding to the narrow viewing angle mode. Therefore, the self-luminous display device of the embodiment of the utility model has strong operational flexibility and convenience, and achieves a multifunctional self-luminous display device integrating entertainment video and privacy.

[0075] In this document, the directional words such as up, down, left, right, front, and back are defined by the positions of the structures in the drawings and the positions of the structures relative to each other, just for the sake of clarity and convenience in expressing the technical solution. It should be understood that the use of the directional words should not limit the scope of protection claimed in this application. It should also be understood that the terms "first" and "second" used in this document are only used to distinguish names and are not used to limit quantity and order.

[0076] The above description is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technician familiar with the profession can make some changes or modifications to the technical contents disclosed above without departing from the scope of the technical solution of the present invention, which are equivalent embodiments of equivalent changes. However, any simple modification, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the protection scope of the technical solution of the present invention.

Claims

1. A self-luminous display device with switchable wide and narrow viewing angles, characterized in that: The invention comprises a first self-luminous display panel (10), a second self-luminous display panel (30), and an anti-peeping structure (20) arranged between the first self-luminous display panel (10) and the second self-luminous display panel (30), wherein the first self-luminous display panel (10), the anti-peeping structure (20), and the second self-luminous display panel (30) are stacked in sequence in a direction toward a light emitting side, and the anti-peeping structure (20) is used to reduce the angle range of light emitted by the second self-luminous display panel (30); In a wide viewing angle mode, the first self-luminous display panel (10) is in an on state, and the second self-luminous display panel (30) is in a off state; in a narrow viewing angle mode, the first self-luminous display panel (10) is in a off state, and the second self-luminous display panel (30) is in an on state.

2. The self-luminous display device with switchable wide and narrow viewing angles according to claim 1, characterized in that: The first self-luminous display panel (10) has a plurality of first pixel unit areas (C1) distributed in an array, each of the first pixel unit areas (C1) having at least one first sub-pixel (P1), the second self-luminous display panel (30) has a plurality of second pixel unit areas (C2) distributed in an array, each of the second pixel unit areas (C2) having at least one second sub-pixel (P2), and the projection of the first pixel unit area (C1) on the second self-luminous display panel (30) corresponds one-to-one to the second pixel unit area (C2).

3. The self-luminous display device with switchable wide and narrow viewing angles according to claim 2, characterized in that: Each of the first pixel unit areas (C1) is provided with one of the first sub-pixels (P1), and a projection of each of the first sub-pixels (P1) on the second self-luminous display panel (30) corresponds to at least one of the second sub-pixels (P2).

4. The self-luminous display device with switchable wide and narrow viewing angles according to claim 2, characterized in that: A transparent area (T1) is also provided in each of the first pixel unit areas (C1), and a projection of each of the second sub-pixels (P2) on the first self-luminous display panel (10) corresponds to the first sub-pixel (P1) and the transparent area (T1).

5. The self-luminous display device with switchable wide and narrow viewing angles according to claim 2, characterized in that: A transparent area (T1) is also provided in each of the first pixel unit areas (C1), a blank area (T2) is also provided in each of the second pixel unit areas (C2), a projection of the first sub-pixel (P1) on the second self-luminous display panel (30) corresponds to the blank area (T2), and a projection of the second sub-pixel (P2) on the first self-luminous display panel (10) corresponds to the transparent area (T1).

6. The self-luminous display device with switchable wide and narrow viewing angles according to claim 5, characterized in that: Each of the first pixel unit areas (C1) has one first sub-pixel (P1), and each of the second pixel unit areas (C2) has one second sub-pixel (P2); Or, each of the first pixel unit areas (C1) is provided with three first sub-pixels (P1), the three first sub-pixels (P1) are arranged close to one of the vertex corners of the first pixel unit area (C1), each of the second pixel unit areas (C2) is provided with three second sub-pixels (P2), the three second sub-pixels (P2) are arranged close to one of the vertex corners of the second pixel unit area (C2), and the projection of the first sub-pixel (P1) on the second self-luminous display panel (30) is completely staggered with the second sub-pixel (P2); Alternatively, each of the first pixel unit areas (C1) is provided with six of the first sub-pixels (P1), and the six of the first sub-pixels (P1) are arranged near two opposite vertex corners of the first pixel unit area (C1); each of the second pixel unit areas (C2) is provided with six of the second sub-pixels (P2), and the six of the second sub-pixels (P2) are arranged near two opposite vertex corners of the second pixel unit area (C2); and the projection of the first sub-pixel (P1) on the second self-luminous display panel (30) is completely offset from that of the second sub-pixel (P2).

7. The self-luminous display device with switchable wide and narrow viewing angles according to any one of claims 1 to 6, characterized in that: The anti-peep structure (20) comprises a plurality of light-blocking walls (21) and a light-transmitting gap (22) between two adjacent light-blocking walls (21); the width of the light-blocking wall (21) is 10-15 um, the width of the light-transmitting gap (22) is 40-80 um, and the width of the light-transmitting gap (22) is greater than the width of the second sub-pixel (P2) in the second self-luminous display panel (30).

8. The self-luminous display device with switchable wide and narrow viewing angles according to any one of claims 1 to 6, characterized in that: The anti-peeping structure (20) comprises a first anti-peeping layer (20a) and a second anti-peeping layer (20b), and the light collecting directions of the first anti-peeping layer (20a) and the second anti-peeping layer (20b) are perpendicular to each other.

9. The self-luminous display device with switchable wide and narrow viewing angles according to any one of claims 1 to 6, characterized in that: The first self-luminous display panel (10) is an OLED display panel or a Micro LED display panel, and the second self-luminous display panel (30) is an OLED display panel or a Micro LED display panel.

10. The self-luminous display device with switchable wide and narrow viewing angles according to any one of claims 1 to 6, characterized in that: A circular polarizer (40) is provided on a side of the first self-luminous display panel (10) close to a light-emitting side, the circular polarizer (40) comprising a quarter-wave plate (41) and a linear polarizer (42), the linear polarizer (42) being provided on a side of the quarter-wave plate (41) away from the first self-luminous display panel (10).

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