Self-luminous display device and driving method

Abstract

The application discloses a self-luminous display device and a driving method. The self-luminous display device comprises a light modulation box, a quarter-wave plate and a self-luminous display panel which are sequentially stacked, and the self-luminous display panel is provided with a light reflection structure for reflecting ambient light. The light modulation box comprises a first substrate, a second substrate and a dye liquid crystal layer, the first substrate is provided with an auxiliary electrode, and the second substrate is provided with a control electrode matched with the auxiliary electrode. By controlling the voltage applied to the auxiliary electrode and the control electrode, the liquid crystal molecules and the dye molecules in the dye liquid crystal layer are deflected, so that the liquid crystal molecules and the dye molecules in the dye liquid crystal layer are in a flat posture to realize a wide viewing angle mode, or the liquid crystal molecules and the dye molecules in the dye liquid crystal layer are in an inclined posture to realize a narrow viewing angle mode, or the liquid crystal molecules and the dye molecules in the dye liquid crystal layer are in an inclined posture or a vertical posture, and the self-luminous display panel is closed to realize a mirror reflection mode.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of OLED display, in particular to a self-luminous display device and a driving method. BACKGROUND

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

[0003] Generally, OLED display has the characteristics of self-luminous, wide viewing angle, and high color saturation. The viewing angle of OLED display can reach more than 160°. While enjoying the experience of wide viewing angle, people also hope to effectively protect commercial 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 angle, the display device also needs to have the function of switching between wide and narrow viewing angles in many occasions.

[0004] At present, the main way to realize the switching between wide and narrow viewing angles is to attach a louver shielding film to the OLED display screen. When privacy protection is needed, the louver shielding film can be used to shield the screen to reduce the viewing angle. However, this method requires an additional louver shielding film, which causes great inconvenience to the user. Moreover, a louver shielding film can only realize one viewing angle. Once the louver shielding film is attached, the viewing angle is fixed in the narrow viewing angle mode, which makes it impossible to freely switch between the wide viewing angle mode and the narrow viewing angle mode. In addition, the privacy protection film will cause a decrease in brightness and affect the quality.

[0005] Moreover, many existing cars are equipped with a mirror-type display device that not only has the function of an ordinary rearview mirror but also has the functions of a reversing image, a dashcam, and the like. The existing mirror-type display device is obtained by attaching a display device for displaying an image, a mirror part, and an automatic anti-glare device together as a mirror-type display device. The display device is a liquid crystal display or an organic light-emitting display, and the automatic anti-glare device is an electrochromic device that can automatically adjust the brightness. The mirror-type display device obtained by the attachment and assembly method has a large mechanical thickness and weight, which brings inconvenience to the user. SUMMARY

[0006] In order to overcome the shortcomings and deficiencies existing in the prior art, the present application aims to provide a self-luminous display device and a driving method to solve the problem that the self-luminous display device in the prior art cannot realize free switching between wide viewing angle, narrow viewing angle and reflection.

[0007] The object of the present application is achieved by the following technical solutions:

[0008] The present application provides a self-luminous display device, comprising a light adjusting box, a quarter wave plate and a self-luminous display panel which are sequentially stacked.

[0009] The light adjusting box comprises a first substrate, a second substrate oppositely arranged with the first substrate and a dye liquid crystal layer between the first substrate and the second substrate, the dye liquid crystal layer comprises liquid crystal molecules and dye molecules mixed with each other, the dye molecules rotate synchronously with the liquid crystal molecules, the first substrate is provided with an auxiliary electrode, and the second substrate is provided with a control electrode matched with the auxiliary electrode.

[0010] The self-luminous display panel is used to control the display of gray scale pictures, and is provided with a reflection structure for reflecting ambient light.

[0011] In the wide viewing angle mode, the self-luminous display panel is in an open state, the liquid crystal molecules and the dye molecules in the dye liquid crystal layer are in a flat posture, and the included angle between the fast and slow axes of the quarter wave plate is between 0-90°; in the narrow viewing angle mode, the self-luminous display panel is in an open state, the liquid crystal molecules and the dye molecules in the dye liquid crystal layer are in an inclined posture; in the mirror reflection mode, the self-luminous display panel is in a closed state, and the liquid crystal molecules and the dye molecules in the dye liquid crystal layer are in an inclined posture or a vertical posture.

[0012] Further, the reflection structure is a grid structure and is located between the first pixel units and the non-display area of the self-luminous display panel.

[0013] Further, the reflection structure comprises a first scanning line and a first data line on the self-luminous display panel.

[0014] Further, the liquid crystal molecules are positive liquid crystal molecules, the alignment direction of the dye liquid crystal layer is parallel to the first substrate and the second substrate, and the included angle between the fast and slow axes of the quarter wave plate is between 0-90°.

[0015] Or, the liquid crystal molecules are negative liquid crystal molecules, and the alignment direction of the dye liquid crystal layer is perpendicular to the first substrate and the second substrate.

[0016] Further, in the wide viewing angle mode, the angle between the liquid crystal molecules and the dye molecules in the dye liquid crystal layer and the quarter-wave plate is 45°.

[0017] Further, the self-luminous display device has an identification pattern area and a non-identification pattern area, the control electrode includes a first control electrode corresponding to the identification pattern area and a second control electrode corresponding to the non-identification pattern area, the first control electrode and the second control electrode are insulated and spaced apart from each other;

[0018] In the identification display mode, the self-luminous display panel is in an off state, the liquid crystal molecules and the dye molecules corresponding to the identification pattern area are in an inclined posture or a vertical posture, the liquid crystal molecules and the dye molecules corresponding to the non-identification pattern area are in a flat posture, and the angle between the fast and slow axes of the quarter-wave plate is between 0-90°.

[0019] Further, a plurality of second scan lines and a plurality of second data lines are arranged on the second substrate, the second scan lines and the second data lines are insulated and crossed to define a plurality of second pixel units, the control electrode includes a plurality of electrode blocks corresponding to the second pixel units, and a second thin film transistor is arranged in each of the second pixel units on the second substrate, and the electrode blocks are electrically connected to the second scan lines and the second data lines adjacent to the second thin film transistors through the second thin film transistors;

[0020] In the reflection display mode, a corresponding gray-scale voltage is applied to each of the electrode blocks.

[0021] The application further provides a driving method of a self-luminous display device, which is used for driving the self-luminous display device as described above, and the driving method comprises the following steps of:

[0022] In the wide viewing angle mode, the self-luminous display panel is controlled to be turned on, a common signal is applied to the auxiliary electrode, and a wide viewing angle signal is applied to the control electrode, so as to control the liquid crystal molecules and the dye molecules in the dye liquid crystal layer to be in a flat posture and the angle between the fast and slow axes of the quarter-wave plate to be between 0-90°.

[0023] In the narrow viewing angle mode, the self-luminous display panel is controlled to be turned on, a common signal is applied to the auxiliary electrode, and a narrow viewing angle signal is applied to the control electrode, so as to control the liquid crystal molecules and the dye molecules in the dye liquid crystal layer to be in an inclined posture.

[0024] In the mirror reflection mode, the self-luminous display panel is controlled to be turned off, a common signal is applied to the auxiliary electrode, and a reflection signal is applied to the control electrode, so as to control the liquid crystal molecules and the dye molecules in the dye liquid crystal layer to be in an inclined posture or a vertical posture.

[0025] Further, the self-luminous display device has an identification pattern area and a non-identification pattern area, the control electrode includes a first control electrode corresponding to the identification pattern area and a second control electrode corresponding to the non-identification pattern area, the first control electrode and the second control electrode are insulated and spaced from each other, and the driving method includes:

[0026] In the identification display mode, the self-luminous display panel is controlled to be closed, a common signal is applied to the auxiliary electrode, a bright state signal is applied to the first control electrode to control the liquid crystal molecules and the dye molecules corresponding to the identification pattern area to be in an inclined posture or a vertical posture, and a dark state signal is applied to the second control electrode to control the liquid crystal molecules and the dye molecules corresponding to the non-identification pattern area to be in a flat posture, and the included angle between the fast and slow axes of the quarter-wave plate is between 0-90°.

[0027] Further, the second substrate is provided with a plurality of second scan lines and a plurality of second data lines, the second scan lines and the second data lines are insulated and crossed to define a plurality of second pixel units, the control electrode includes a plurality of electrode blocks corresponding to the second pixel units, the second substrate is provided with a second thin film transistor in each of the second pixel units, the electrode blocks are electrically connected with the second scan lines and the second data lines adjacent to the second thin film transistors through the second thin film transistors, and the driving method includes:

[0028] In the reflection display mode, the self-luminous display panel is controlled to be closed, a common signal is applied to the auxiliary electrode, and a corresponding gray scale voltage is applied to each of the electrode blocks to control each of the second pixel units to present a corresponding brightness.

[0029] The present application has the advantages that: by controlling the voltages applied to the auxiliary electrode and the control electrode, the liquid crystal molecules and the dye molecules in the dye liquid crystal layer are deflected, so that the liquid crystal molecules and the dye molecules in the dye liquid crystal layer are in a flat posture to realize a wide viewing angle mode, or the liquid crystal molecules and the dye molecules in the dye liquid crystal layer are in an inclined posture to realize a narrow viewing angle mode, or the liquid crystal molecules and the dye molecules in the dye liquid crystal layer are in an inclined posture or a vertical posture, and the self-luminous display panel is closed, and the reflective structure on the self-luminous display panel is matched to realize a mirror reflection mode. Moreover, in the wide viewing angle mode, the included angle between the liquid crystal molecules and the dye molecules and the fast and slow axes of the quarter-wave plate is between 0-90°, so that the reflective structure on the self-luminous display panel does not reflect ambient light, which has an anti-glare effect to enhance the wide viewing angle display effect. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1is a structural schematic diagram of the self-luminous display device in the initial state in the embodiment one of the present application.

[0031] Figure 2 is a pixel arrangement schematic diagram of the self-luminous display device in the embodiment one of the present application.

[0032] Figure 3 is a plane schematic diagram of the driving circuit on the self-luminous display panel in the embodiment one of the present application.

[0033] Figure 4 is a driving signal waveform diagram of the self-luminous display device in the wide viewing angle mode in the embodiment one of the present application.

[0034] Figure 5 is a structural schematic diagram of the self-luminous display device in the wide viewing angle mode in the embodiment one of the present application.

[0035] Figure 6 is a light path principle schematic diagram of the self-luminous display device in the wide viewing angle mode in the embodiment one of the present application.

[0036] Figure 7 is a driving signal waveform diagram of the self-luminous display device in the narrow viewing angle mode in the embodiment one of the present application.

[0037] Figure 8 is a structural schematic diagram of the self-luminous display device in the narrow viewing angle mode in the embodiment one of the present application.

[0038] Figure 9 is a driving signal waveform diagram of the self-luminous display device in the mirror reflection mode in the embodiment one of the present application.

[0039] Figure 10 is a structural schematic diagram of the self-luminous display device in the mirror reflection mode in the embodiment one of the present application.

[0040] Figure 11 is a light path principle schematic diagram of the self-luminous display device in the mirror reflection mode in the embodiment one of the present application.

[0041] Figure 12 is a structural schematic diagram of the self-luminous display device in the initial state in the embodiment two of the present application.

[0042] Figure 13 is a plane structural schematic diagram of the self-luminous display device in the embodiment two of the present application.

[0043] Figure 14 is a plane structural schematic diagram of the control electrode in the embodiment two of the present application.

[0044] Figure 15 is a structural schematic diagram of the self-luminous display device in the identification display mode in the embodiment two of the present application.

[0045] Figure 16 is a structural schematic diagram of the self-luminous display device in the initial state in Embodiment Three of the present application.

[0046] Figure 17 is a planar structural schematic diagram of the second substrate in Embodiment Three of the present application.

[0047] Figure 18 is a structural schematic diagram of the self-luminous display device in the reflective display mode in Embodiment Three of the present application.

[0048] Figure 19 is a structural schematic diagram of the self-luminous display device in the initial state in Embodiment Four of the present application.

[0049] Figure 20 is one of the planar structural schematic diagrams of the self-luminous display device in the present application.

[0050] Figure 21 is another of the planar structural schematic diagrams of the self-luminous display device in the present application. DETAILED DESCRIPTION

[0051] In order to further illustrate the technical means and effects taken by the present application to achieve the predetermined purposes and effects, the specific embodiments, structures, features and effects of the self-luminous display device and the driving method according to the present application are described in detail as follows in combination with the drawings and the preferred embodiments:

[0052] [Embodiment One]

[0053] Figure 1 is a structural schematic diagram of the self-luminous display device in the initial state in Embodiment One of the present application. Figure 2 is a pixel arrangement schematic diagram of the self-luminous display device in Embodiment One of the present application. Figure 3 is a planar schematic diagram of the driving circuit on the self-luminous display panel in Embodiment One of the present application.

[0054] As shown in Figures 1 to 3 , the self-luminous display device provided by Embodiment One of the present application comprises a light-adjusting box 10, a quarter-wave plate 20 and a self-luminous display panel 30 which are sequentially and layerwisely arranged, the light-adjusting box 10 and the quarter-wave plate 20 are both arranged on the light-emitting side of the self-luminous display panel 30, and the quarter-wave plate 20 is arranged between the light-adjusting box 10 and the self-luminous display panel 30. The self-luminous display panel 30 is used for controlling the display of the gray scale picture, and the self-luminous display panel 30 is provided with a light-reflecting structure 33 for reflecting the ambient light.

[0055] The dimming box 10 includes a first substrate 11, a second substrate 12 disposed opposite to the first substrate 11, and a dye-liquid crystal layer 13 located between the first substrate 11 and the second substrate 12. The dye-liquid crystal layer 13 includes liquid crystal molecules 131 and dye molecules 132 mixed together. The dye molecules 132 rotate synchronously with the liquid crystal molecules 131. The liquid crystal molecules 131 are positive liquid crystal molecules (liquid crystal molecules with positive dielectric anisotropy), and the dye molecules 132 can be black dye molecules or purplish-black dye molecules. The light absorption capacity of the dye molecules along their long axis is greater than that along their short axis, that is, the dye molecules 132 have the characteristic of strong light absorption along their long axis and very weak light absorption along their short axis. Figure 1 As shown, in the initial state, positive liquid crystal molecules and dye molecules 132 are aligned parallel to the first substrate 11 and the second substrate 12. The alignment direction of the dye liquid crystal layer 13 on the side closer to the first substrate 11 is parallel to or opposite to the alignment direction on the side closer to the second substrate 12. The angle between the alignment direction of the dye liquid crystal layer 13 and the fast / slow axis of the quarter-wave plate 20 is between 0 and 90°. Optionally, the angle between the alignment direction of the dye liquid crystal layer 13 and the fast / slow axis of the quarter-wave plate 20 is 45°. It can be understood that the first substrate 11 has a first alignment layer on the side facing the dye liquid crystal layer 13, and the second substrate 12 has a second alignment layer on the side facing the dye liquid crystal layer 13. The first alignment layer and the second alignment layer are used to align the dye liquid crystal layer 13. The alignment directions of the first alignment layer and the second alignment layer are parallel to each other, and the angle between them and the fast / slow axis of the quarter-wave plate 20 is between 0 and 90°. Of course, the dye liquid crystal layer 13 can have a small pretilt angle (e.g., less than 5°) during initial alignment, that is, the liquid crystal molecules 131 and dye molecules 132 initially form a small angle with the first substrate 11 and the second substrate 12, which can accelerate the deflection of positive liquid crystal molecules and dye molecules 132 toward the vertical direction when switching to a narrow viewing angle.

[0056] An auxiliary electrode 111 is provided on the first substrate 11, and a control electrode 121 cooperating with the auxiliary electrode 111 is provided on the second substrate 12. By controlling the voltage applied to the auxiliary electrode 111 and the control electrode 121, the dimming box 10 can be controlled to switch between a wide viewing angle and a narrow viewing angle. In this embodiment, both the auxiliary electrode 111 and the control electrode 121 are planar electrodes formed over an entire surface, thereby enabling control of all areas of the display device to switch simultaneously between a wide viewing angle and a narrow viewing angle.

[0057] Furthermore, the first substrate 11 is provided with an insulating layer covering the auxiliary electrode 111, and / or the second substrate 12 is provided with an insulating layer covering the control electrode 121, so as to avoid the problem of short circuit between the auxiliary electrode 111 and the control electrode 121.

[0058] In the embodiment, the auxiliary electrode 111 and the control electrode 121 are both surface electrodes, the auxiliary electrode 111 is a surface electrode covering the first substrate 11, and the control electrode 121 is a surface electrode covering the second substrate 12, so that the self-luminous display device can simultaneously realize the wide-viewing-angle mode, the narrow-viewing-angle mode, and the mirror reflection mode.

[0059] In the wide-viewing-angle mode, the self-luminous display panel 30 is in an open state, the liquid crystal molecules 131 and the dye molecules 132 in the dye liquid crystal layer 13 are in a flat posture, and the included angle between the fast and slow axes of the quarter-wave plate 20 is between 0-90°. Optionally, the included angle between the liquid crystal molecules 131 and the dye molecules 132 in the dye liquid crystal layer 13 and the quarter-wave plate 20 is 45°. The light emitted by the self-luminous display panel 30 can normally pass through the quarter-wave plate 20 and the light-adjusting box 10, and the ambient light passes through the light-adjusting box 10 and the quarter-wave plate 20 and is reflected by the reflective structure 33, can only pass through the quarter-wave plate 20, and then is absorbed by the dye molecules 132 of the light-adjusting box 10, thereby avoiding the reflection of the ambient light by the reflective structure 33 on the self-luminous display panel, achieving the anti-glare effect, and enhancing the wide-viewing-angle display effect. In the narrow-viewing-angle mode, the self-luminous display panel 30 is in an open state, the liquid crystal molecules 131 and the dye molecules 132 in the dye liquid crystal layer 13 are in an inclined posture, the dye liquid crystal layer 13 absorbs light at a large viewing angle, realizes the narrow-viewing-angle effect of large-viewing-angle light collection, but the anti-reflection effect of the ambient light decreases. In the mirror reflection mode, the self-luminous display panel 30 is in a closed state, the liquid crystal molecules 131 and the dye molecules 132 in the dye liquid crystal layer 13 are in an inclined posture or a vertical posture, the reflective structure 33 on the self-luminous display panel 30 can reflect the ambient light, and the mirror reflection effect is realized.

[0060] The self-luminous display panel 30 is, for example, an OLED (Organic Light-Emitting Diode) display or a Micro LED (micro light-emitting diode) display. Figure 2 and Figure 3As shown, the self-luminous display panel 30 comprises a substrate 31, a light-emitting unit 32 disposed on the substrate 31, the substrate 31 is provided with a plurality of first scanning lines 331, a plurality of first data lines 332 and a plurality of first thin film transistors 333, the plurality of first scanning lines 331 and the plurality of first data lines 332 are insulated and crossed with each other to define a plurality of first pixel units P1, the light-emitting unit 32, an anode 34 and the first thin film transistor 333 are disposed in each first pixel unit P1, and the anode 34 is conductively connected to the first scanning line 331 and the first data line 332 adjacent to the first thin film transistor 333 through the first thin film transistor 333. The substrate 31 is further provided with a cathode (not shown in the figure) on the side away from the anode 34 of the light-emitting unit 32, and the light-emitting unit 32 is controlled to emit light through the anode 34 and the cathode, and the light-emitting unit 32 can adopt an organic light-emitting material. The first thin film transistor 333 comprises a first gate, a first active layer, a first drain and a first source, the first gate is located in the same layer as the first scanning line 331 and is electrically connected, the first gate is insulated from the first active layer through a gate insulating layer, the first source is electrically connected to the first data line 332, and the first drain is electrically connected to the anode 34 through a contact hole. For more details of the self-luminous display panel 30, please refer to the prior art, which will not be described here.

[0061] Further, the light-reflecting structure 33 is a grid structure and is located between the first pixel units P1 and the non-display area of the self-luminous display panel 30, thereby preventing the light-reflecting structure 33 from affecting the normal display of the self-luminous display panel 30. Alternatively, since the metal electrodes (the first scanning lines 331 and the first data lines 332) inside the self-luminous display panel 30 are made of molybdenum, aluminum and other metals, which have good light-reflecting effect, the light-reflecting structure 33 comprises the first scanning lines 331 and the first data lines 332 on the self-luminous display panel 30, thereby the light-reflecting effect can be realized by using the metal electrodes inside the self-luminous display panel 30 to simplify the structure of the self-luminous display device. Of course, in other embodiments, the light-reflecting structure 33 can also adopt a one-way perspective film and be directly attached to the surface of the self-luminous display panel 30 close to the quarter-wave plate 20, the one-way perspective film has no polarization effect on light, and the light emitted by the self-luminous display panel 30 is still natural light after passing through the one-way perspective film, and the ambient light is also natural light after being reflected by the one-way perspective film. The one-way perspective film (also called one-way film, mirror film, etc.) refers to a film that can be attached to glass to make the glass have a very high reflectivity to visible light. For example, when the outdoor is brighter than the indoor, the one-way perspective film is similar to an ordinary mirror, the outdoor cannot see the indoor scenery, but the indoor can see the outdoor scenery. The one-way perspective film is widely used in household life glass film or automobile glass film.

[0062] The first substrate 11, the second substrate 12 and the base 31 can be made of transparent materials such as glass, acrylic and polycarbonate. The auxiliary electrode 111, the control electrode 121, the anode 34 and the cathode can be made of transparent conductive materials such as indium tin oxide (ITO) or indium zinc oxide (IZO).

[0063] The application also provides a driving method of the self-luminous display device, which is used for driving the self-luminous display device as described above. The driving method comprises:

[0064] Figure 4 is a driving signal waveform diagram of the self-luminous display device in the wide viewing angle mode in the embodiment one of the application. Figure 5 is a structural schematic diagram of the self-luminous display device in the wide viewing angle mode in the embodiment one of the application. As shown in Figure 4 and Figure 5 As shown in the wide viewing angle mode, the self-luminous display panel 30 is controlled to be turned on, a common signal Vcom is applied to the auxiliary electrode 111, and a wide viewing angle signal, for example, a first voltage V1, is applied to the control electrode 121, and the voltage difference between the first voltage V1 and the common voltage signal Vcom is zero or less than a first preset value (0.3V), at this time, the liquid crystal molecules 131 and the dye molecules 132 in the dye liquid crystal layer 13 do not deflect and keep the initial flat posture, and the included angle between the liquid crystal molecules 131 and the dye molecules 132 and the fast and slow axes of the quarter-wave plate 20 is between 0-90°, for example, 45°, and the light emitted by the self-luminous display panel 30 can normally pass through the quarter-wave plate 20 and the light adjusting box 10, so as to realize the wide viewing angle display.

[0065] Figure 6 is a light path principle schematic diagram of the self-luminous display device in the wide viewing angle mode in the embodiment one of the application. As shown in Figure 6 As shown in the wide viewing angle mode, the light emitted by the self-luminous display panel 30 can normally pass through the quarter-wave plate 20, when passing through the dye liquid crystal layer 13, the light parallel to the dye molecules 132 is absorbed, and the light perpendicular to the dye molecules 132 can pass through the dye liquid crystal layer 13, so as to realize the normal display of the picture; when the ambient light I passes through the dye liquid crystal layer 13, the light parallel to the dye molecules 132 is absorbed, and the light perpendicular to the dye molecules 132 can pass through the dye liquid crystal layer 13, and when passing through the quarter-wave plate 20, the linearly polarized light (for example, 0°) becomes the circularly polarized light (for example, right-handed), the circularly polarized light is reflected by the reflecting structure 33 and becomes the circularly polarized light (left-handed) with opposite rotation direction, and when the circularly polarized light (left-handed) passes through the quarter-wave plate 20 again, the circularly polarized light (left-handed) becomes the linearly polarized light (90°), at this time, the linearly polarized light (90°) is parallel to the dye molecules 132 and is absorbed by the dye molecules 132. Thus, the reflecting structure 33 on the self-luminous display panel reflects the ambient light, which avoids the ambient light, and has the effect of anti-glare, so as to enhance the wide viewing angle display effect.

[0066] Figure 7 is the driving signal waveform diagram of the self-luminous display device in the narrow viewing angle mode in the embodiment one of the present application. Figure 8 is the structural schematic diagram of the self-luminous display device in the narrow viewing angle mode in the embodiment one of the present application. As shown in Figure 7 and Figure 8 shown, in the narrow viewing angle mode, the self-luminous display panel 30 is controlled to be turned on, the common signal Vcom is applied to the auxiliary electrode 111, and the narrow viewing angle signal, for example, the second voltage V2 (for example, 5V) is applied to the control electrode 121, the voltage difference between the second voltage V2 and the common voltage signal Vcom is greater than the second preset value (for example, 2V) and less than the third preset value (for example, 7V), and the vertical electric field E1 (as shown by the arrow in Figure 8 ) is formed between the auxiliary electrode 111 and the control electrode 121. Since the positive liquid crystal molecules will rotate in the direction perpendicular to the electric field lines under the action of the electric field, the positive liquid crystal molecules will be deflected under the action of the vertical electric field E1, and the dye molecules 132 will be deflected together with the liquid crystal molecules 131, so that the positive liquid crystal molecules and the dye molecules 132 are in an inclined posture, the light of large viewing angle is absorbed by the dye molecules 132, thereby presenting the narrow viewing angle effect of large viewing angle light collection. Since the positive liquid crystal molecules and the dye molecules 132 are in an inclined posture, the polarization effect of the light by the dye molecules 132 is poor, so that the effect of resisting the ambient light in the narrow viewing angle mode will be reduced.

[0067] Figure 9 is the driving signal waveform diagram of the self-luminous display device in the mirror reflection mode in the embodiment one of the present application. Figure 10 is the structural schematic diagram of the self-luminous display device in the mirror reflection mode in the embodiment one of the present application. As shown in Figure 9 and Figure 10 shown, in the mirror reflection mode, the self-luminous display panel 30 is controlled to be turned off, the common signal Vcom is applied to the auxiliary electrode 111, and the reflection signal, for example, the third voltage V3 (for example, 10V) is applied to the control electrode 121, the voltage difference between the third voltage V3 and the common voltage signal Vcom is greater than the second preset value (for example, 2V), and the vertical electric field E2 (as shown by the arrow in Figure 10As shown in the arrow, under the action of the vertical electric field E2, the positive liquid crystal molecules will be deflected, and the dye molecules 132 will be deflected along with the liquid crystal molecules 131, so that the positive liquid crystal molecules and the dye molecules 132 are perpendicular or approximately perpendicular to the first substrate 11 and the second substrate 12, the positive liquid crystal molecules and the dye molecules 132 change from the lying posture to the vertical posture, the dye molecules 132 have little polarization effect on the light, and the ambient light can normally pass through the dye liquid crystal layer 13 and then be reflected back by the reflecting structure 33 to realize the mirror reflection effect. Of course, in other embodiments, the third voltage V3 can also be other values (for example, 5V) to control the liquid crystal molecules 131 and the dye molecules 132 in the dye liquid crystal layer 13 to be in an inclined posture, at this time, the polarization effect of the dye molecules 132 on the light is poor, so that the reflection effect of the self-luminous display device on the ambient light is poor, and in the mirror reflection mode, the anti-dazzle effect can be achieved to be more suitable for vehicle rearview mirror. The third voltage V3 can be set according to actual needs, so that the anti-dazzle effect can be adjusted.

[0068] Figure 11 is the light path principle schematic diagram of the self-luminous display device in the mirror reflection mode in the embodiment one of the application. As shown in Figure 11 , in the mirror reflection mode, because the positive liquid crystal molecules and the dye molecules 132 in the dye liquid crystal layer 13 are in a vertical posture, the dye molecules 132 have little polarization effect on the light, and the ambient light I will not have polarization effect when passing through the dye liquid crystal layer 13, can normally pass through the quarter-wave plate 20, then be reflected back by the reflecting structure 33 and normally pass through the quarter-wave plate 20 and the dye liquid crystal layer 13, thereby realizing the mirror reflection effect.

[0069] [Embodiment two]

[0070] Figure 12 is the structure schematic diagram of the self-luminous display device in the initial state in the embodiment two of the application. Figure 13 is the plane structure schematic diagram of the self-luminous display device in the embodiment two of the application. Figure 14 is the plane structure schematic diagram of the control electrode in the embodiment two of the application. As shown in Figure 12 and Figure 14 , the self-luminous display device and the driving method provided by the embodiment two of the application are basically the same as those in the embodiment one of the application, the difference is that: Figures 1 to 11

[0071] ​In the embodiment, the self-luminous display device has an identification pattern area 110 and a non-identification pattern area 120, the control electrode 121 includes a first control electrode 121a corresponding to the identification pattern area 110 and a second control electrode 121b corresponding to the non-identification pattern area 120, the first control electrode 121a and the second control electrode 121b are insulated and spaced from each other, so that different voltage signals are applied to the first control electrode 121a and the second control electrode 121b respectively in the identification display mode. The pattern of the identification pattern area 110 can be set according to actual needs, the pattern of the first control electrode 121a is the same as that of the identification pattern area 110, but the pattern of the identification pattern area 110 cannot be changed after the light modulation box 10 is completed, and only one identification pattern can be displayed in the identification display mode.

[0072] In the wide viewing angle mode, the self-luminous display panel 30 is in the open state, the liquid crystal molecules 131 and the dye molecules 132 in the dye liquid crystal layer 13 are both in the flat posture, and the included angle between the fast and slow axes of the quarter-wave plate 20 is between 0-90°. Optionally, the included angle between the liquid crystal molecules 131 and the dye molecules 132 in the dye liquid crystal layer 13 and the quarter-wave plate 20 is 45°. The light emitted by the self-luminous display panel 30 can normally pass through the quarter-wave plate 20 and the light modulation box 10, while the ambient light passes through the light modulation box 10 and the quarter-wave plate 20 and is reflected by the reflective structure 33, can only pass through the quarter-wave plate 20, and then is absorbed by the dye molecules 132 of the light modulation box 10, thereby avoiding the reflection of the ambient light by the reflective structure 33 on the self-luminous display panel, achieving the anti-glare effect, and enhancing the wide viewing angle display effect. In the narrow viewing angle mode, the self-luminous display panel 30 is in the open state, the liquid crystal molecules 131 and the dye molecules 132 in the dye liquid crystal layer 13 are both in the inclined posture, the dye liquid crystal layer 13 absorbs the light in the wide viewing angle, realizes the narrow viewing angle effect of wide viewing angle light collection, but the anti-reflection effect of the ambient light decreases. In the mirror reflection mode, the self-luminous display panel 30 is in the closed state, the liquid crystal molecules 131 and the dye molecules 132 in the dye liquid crystal layer 13 are both in the inclined posture or the vertical posture, the reflective structure 33 on the self-luminous display panel 30 can reflect the ambient light, and the mirror reflection effect is realized. In the identification display mode, the self-luminous display panel 30 is in the closed state, the liquid crystal molecules 131 and the dye molecules 132 corresponding to the identification pattern area 110 are both in the inclined posture or the vertical posture; while the liquid crystal molecules 131 and the dye molecules 132 corresponding to the non-identification pattern area 120 are both in the flat posture, and the included angle between the fast and slow axes of the quarter-wave plate 20 is between 0-90°. Optionally, the included angle between the liquid crystal molecules 131 and the dye molecules 132 in the dye liquid crystal layer 13 and the quarter-wave plate 20 is 45°, so that the identification pattern area 110 can reflect the ambient light, and the non-identification pattern area 120 presents a dark state.

[0073] In the embodiment, the first control electrode 121a and the second control electrode 121b are located in the same layer, wherein the non-indication pattern area 120 surrounds the periphery of the indication pattern area 110, and the second control electrode 121b surrounds the periphery of the first control electrode 121a, so that an additional signal wire layer can be arranged to electrically connect the first control electrode 121a to the binding area of the non-display area, thereby facilitating the application of the control signal to the first control electrode 121a. Of course, in other embodiments, the first control electrode 121a and the second control electrode 121b are located in different layers, so that the signal wire layer does not need to be additionally arranged, but since the first control electrode 121a and the second control electrode 121b are located in different layers, the distances from the auxiliary electrode 111 are different, which has a certain influence on the narrow viewing angle effect.

[0074] The application further provides a driving method of the self-luminous display device, for driving the self-luminous display device as described above. The driving method comprises:

[0075] In the wide viewing angle mode, the self-luminous display panel 30 is controlled to be turned on, and the common signal Vcom is applied to the auxiliary electrode 111, and the wide viewing angle signal is applied to the control electrode 121, that is, the first control electrode 121a and the second control electrode 121b both apply the wide viewing angle signal, for example, the first voltage V1, and the voltage difference between the first voltage V1 and the common voltage signal Vcom is zero or less than the first preset value (0.3V), at this time, the liquid crystal molecules 131 and the dye molecules 132 in the dye liquid crystal layer 13 do not substantially deflect and maintain the initial flat posture, and the included angle between the liquid crystal molecules 131 and the dye molecules 132 and the fast and slow axes of the quarter-wave plate 20 is between 0-90°, for example, 45°, and the light emitted by the self-luminous display panel 30 can normally pass through the quarter-wave plate 20 and the light modulation box 10, realizing the wide viewing angle display.

[0076] Reference Figure 6As shown, in the wide viewing angle mode, the light emitted by the self-luminous display panel 30 can normally pass through the quarter-wave plate 20, and when passing through the dye liquid crystal layer 13, the light parallel to the dye molecules 132 is absorbed, and the light perpendicular to the dye molecules 132 can pass through the dye liquid crystal layer 13 to realize normal display of the picture; when the ambient light I passes through the dye liquid crystal layer 13, the light parallel to the dye molecules 132 is absorbed, and the light perpendicular to the dye molecules 132 can pass through the dye liquid crystal layer 13, and when passing through the quarter-wave plate 20, linearly polarized light (for example, 0°) becomes circularly polarized light (for example, right-handed), the circularly polarized light is reflected by the reflective structure 33 and becomes circularly polarized light (left-handed) with opposite rotation direction, and when the circularly polarized light (left-handed) passes through the quarter-wave plate 20 again, it changes from circularly polarized light (left-handed) to linearly polarized light (90°), at this time the linearly polarized light (90°) is parallel to the dye molecules 132 and is absorbed by the dye molecules 132. Thus, the reflective structure 33 on the self-luminous display panel reflects the ambient light, which avoids the reflection of the ambient light by the reflective structure 33 on the self-luminous display panel, and plays a role of anti-glare to enhance the wide viewing angle display effect.

[0077] In the narrow viewing angle mode, the self-luminous display panel 30 is controlled to be turned on, a common signal Vcom is applied to the auxiliary electrode 111, and a narrow viewing angle signal is applied to the control electrode 121, that is, the first control electrode 121a and the second control electrode 121b both apply the narrow viewing angle signal, for example, the second voltage V2 (for example, 5V), the voltage difference between the second voltage V2 and the common voltage signal Vcom is greater than the second preset value (for example, 2V) and less than the third preset value (for example, 7V), and a vertical electric field is formed between the auxiliary electrode 111 and the control electrode 121. Since the positive liquid crystal molecules will rotate in the direction perpendicular to the electric field lines under the action of the electric field, the positive liquid crystal molecules will deflect under the action of the vertical electric field, and the dye molecules 132 deflect together with the liquid crystal molecules 131, so that the positive liquid crystal molecules and the dye molecules 132 are in an inclined posture, and the light of a large viewing angle is absorbed by the dye molecules 132, thereby realizing the narrow viewing angle effect of large viewing angle light collection. Since the positive liquid crystal molecules and the dye molecules 132 are in an inclined posture, the polarization effect of the dye molecules 132 on the light decreases, so that the effect of resisting the ambient light in the narrow viewing angle mode will decrease.

[0078] In the mirror reflection mode, the self-luminous display panel 30 is controlled to be turned off, the common signal Vcom is applied to the auxiliary electrode 111, and the reflective signal is applied to the control electrode 121, that is, the first control electrode 121a and the second control electrode 121b are both applied with the reflective signal, for example, the third voltage V3 (for example, 10 V), and the voltage difference between the third voltage V3 and the common voltage signal Vcom is greater than the second preset value (for example, 2 V), a vertical electric field is formed between the auxiliary electrode 111 and the control electrode 121, and the positive liquid crystal molecules will be deflected under the action of the vertical electric field because the positive liquid crystal molecules will rotate in a direction perpendicular to the electric field lines under the action of the electric field. The dye molecules 132 are deflected together with the liquid crystal molecules 131, so that the positive liquid crystal molecules and the dye molecules 132 are perpendicular or approximately perpendicular to the first substrate 11 and the second substrate 12. The positive liquid crystal molecules and the dye molecules 132 change from a lying posture to a vertical posture. The dye molecules 132 have little polarization effect on light, and the ambient light can normally pass through the dye liquid crystal layer 13 and then be reflected back by the light-reflecting structure 33 to achieve the mirror reflection effect. Of course, in other embodiments, the third voltage V3 can also be other values (for example, 5 V) to control the liquid crystal molecules 131 and the dye molecules 132 in the dye liquid crystal layer 13 to be in an inclined posture. At this time, the polarization effect of the dye molecules 132 on light is poor, so that the reflection effect of the self-luminous display device on ambient light is poor, which can play a role in anti-glare in the mirror reflection mode, so as to be more suitable for vehicle rearview mirrors. The third voltage V3 can be set according to actual needs, so as to adjust the anti-glare effect.

[0079] Reference Figure 11 As shown in FIG. 6, in the mirror reflection mode, the positive liquid crystal molecules and the dye molecules 132 in the dye liquid crystal layer 13 are in a vertical posture, the dye molecules 132 have little polarization effect on light, and the ambient light I will not have a polarization effect when passing through the dye liquid crystal layer 13, can normally pass through the quarter-wave plate 20, and then be reflected back by the light-reflecting structure 33 and normally pass through the quarter-wave plate 20 and the dye liquid crystal layer 13, thereby achieving the mirror reflection effect.

[0080] Figure 15 FIG. 7 is a structural schematic diagram of the self-luminous display device in the logo display mode in the second embodiment of the present application. As shown in FIG. 7, in the logo display mode, the self-luminous display panel 30 is controlled to be turned off, the common signal Vcom is applied to the auxiliary electrode 111, and the bright state signal is applied to the first control electrode 121a, for example, the third voltage V3 (for example, 10 V), and the voltage difference between the third voltage V3 and the common voltage signal Vcom is greater than the second preset value (for example, 2 V), a vertical electric field E2 is formed between the auxiliary electrode 111 and the control electrode 121, and the positive liquid crystal molecules will be deflected under the action of the vertical electric field because the positive liquid crystal molecules will rotate in a direction perpendicular to the electric field lines under the action of the electric field. The dye molecules 132 are deflected together with the liquid crystal molecules 131, so that the positive liquid crystal molecules and the dye molecules 132 are perpendicular or approximately perpendicular to the first substrate 11 and the second substrate 12. The positive liquid crystal molecules and the dye molecules 132 change from a lying posture to a vertical posture. The dye molecules 132 have little polarization effect on light, and the ambient light can normally pass through the dye liquid crystal layer 13 and then be reflected back by the light-reflecting structure 33 to achieve the mirror reflection effect. Of course, in other embodiments, the third voltage V3 can also be other values (for example, 5 V) to control the liquid crystal molecules 131 and the dye molecules 132 in the dye liquid crystal layer 13 to be in an inclined posture. At this time, the polarization effect of the dye molecules 132 on light is poor, so that the reflection effect of the self-luminous display device on ambient light is poor, which can play a role in anti-glare in the mirror reflection mode, so as to be more suitable for vehicle rearview mirrors. The third voltage V3 can be set according to actual needs, so as to adjust the anti-glare effect. Figure 15 Figure 15 ​As the positive liquid crystal molecules will rotate along the direction perpendicular to the electric field lines under the action of the electric field, the positive liquid crystal molecules in the logo pattern area 110 will be deflected under the action of the vertical electric field E2, and the dye molecules 132 will be deflected together with the liquid crystal molecules 131, so that the positive liquid crystal molecules and the dye molecules 132 in the logo pattern area 110 are perpendicular or approximately perpendicular to the first substrate 11 and the second substrate 12, the positive liquid crystal molecules and the dye molecules 132 in the logo pattern area 110 change from the lying posture to the vertical posture, the dye molecules 132 have little polarization effect on the light, the ambient light in the logo pattern area 110 can normally pass through the dye liquid crystal layer 13, and then be reflected back by the reflective structure 33 to realize the mirror reflection effect, so that the logo pattern area 110 is in the bright state. In addition, the dark state signal, for example, the first voltage V1, is applied to the second control electrode 121b, and the voltage difference between the first voltage V1 and the common voltage signal Vcom is zero or less than the first preset value (0.3V), at this time, the liquid crystal molecules 131 and the dye molecules 132 in the dye liquid crystal layer 13 in the non-logo pattern area 120 are basically not deflected and remain in the initial lying posture, and the included angle between the liquid crystal molecules 131 and the dye molecules 132 and the fast and slow axes of the quarter-wave plate 20 is between 0-90°, for example, 45°, the non-logo pattern area 120 cannot reflect the ambient light, so that the non-logo pattern area 120 is in the dark state. Because there is a difference in brightness between the logo pattern area 110 and the non-logo pattern area 120, the self-luminous display device can display the logo corresponding to the logo pattern area 110, and the brand effect of the product is enhanced. Of course, in other embodiments, the third voltage V3 can also be other values (for example, 5V) to control the liquid crystal molecules 131 and the dye molecules 132 in the logo pattern area 110 to be in the inclined posture, at this time, the polarization effect of the dye molecules 132 on the light is poor, so that the reflection effect of the logo pattern area 110 on the ambient light is poor, that is, the brightness is dark, but the brightness is also greater than that of the non-logo pattern area 120.

[0081] In the logo display mode, for the logo pattern area 110, reference can be made to the description of the bright state of the logo pattern area 110 in the mirror reflection mode. Figure 11 As the positive liquid crystal molecules and the dye molecules 132 in the dye liquid crystal layer 13 are in the vertical posture, the dye molecules 132 have little polarization effect on the light, and the ambient light I will not have a polarization effect when passing through the dye liquid crystal layer 13, can normally pass through the quarter-wave plate 20, and then be reflected back and normally pass through the quarter-wave plate 20 and the dye liquid crystal layer 13, thereby realizing the mirror reflection effect, so that the logo pattern area 110 is in the bright state. For the non-logo pattern area 120, reference can be made to the description of the dark state of the non-logo pattern area 120 in the mirror reflection mode. Figure 6As shown, when ambient light I in the non-marking pattern area 120 passes through the dye liquid crystal layer 13, light parallel to the dye molecules 132 is absorbed, while light perpendicular to the dye molecules 132 can pass through the dye liquid crystal layer 13 and then pass through the quarter-wave plate 20, changing from linearly polarized light (e.g., 0°) to circularly polarized light (e.g., right-handed). The circularly polarized light is reflected by the reflective structure 33 and becomes circularly polarized light with the opposite rotation (left-handed). When the circularly polarized light (left-handed) passes through the quarter-wave plate 20 again, it changes from circularly polarized light (left-handed) to linearly polarized light (90°). At this time, the linearly polarized light (90°) is parallel to the dye molecules 132 and is absorbed by the dye molecules 132, thereby making the non-marking pattern area 120 dark.

[0082] Those skilled in the art should understand that the remaining structures and working principles of this embodiment are the same as those of Embodiment 1, and will not be repeated here.

[0083] [Example 3]

[0084] Figure 16 This is a schematic diagram of the structure of the self-emissive display device in its initial state according to Embodiment 3 of the present invention. Figure 17 This is a schematic diagram of the planar structure of the second substrate in Embodiment 3 of the present invention. Figure 16 and Figure 17 As shown, the self-emissive display device and driving method provided in Embodiment 3 of the present invention are the same as those in Embodiment 1. Figures 1 to 11 Example 2 Figures 12 to 15 The self-emissive display devices and driving methods in the above are basically the same, the difference being:

[0085] In the embodiment, the second substrate 12 is provided with a plurality of second scan lines 101 and a plurality of second data lines 102, the second scan lines 101 and the second data lines 102 are insulated and crossed to define a plurality of second pixel units P2, the control electrode 121 includes a plurality of electrode blocks 121c corresponding to the second pixel units P2, the second substrate 12 is provided with a second thin film transistor 103 in each second pixel unit P2, and the electrode block 121c is electrically connected with the second scan line 101 and the second data line 102 adjacent to the second thin film transistor 103 through the second thin film transistor 103. That is, in the present application, the control electrode 121 is divided into a plurality of insulated electrode blocks 121c, the electrode blocks 121c correspond to the second pixel units P2 one by one, and the electrode blocks 121c are electrically connected with the second scan line 101 and the second data line 102 adjacent to the second thin film transistor 103 through the second thin film transistor 103, so as to realize the separate control of the electrical signals on each electrode block 121c. Thus, different gray-scale voltages can be applied to different electrode blocks 121c to make the second pixel units P2 present different brightness, so as to realize the reflection display by using ambient light. The second thin film transistor 103 includes a second gate, a second active layer, a second drain and a second source, the second gate is located in the same layer as the second scan line 101 and is electrically connected, the second gate is insulated from the second active layer through a gate insulating layer, the second source is electrically connected with the second data line 102, and the second drain is electrically connected with the electrode block 121c through a contact hole.

[0086] The first substrate 11 and the second substrate 12 are both colorless transparent structures in the regions corresponding to the second pixel units P2, that is, the transparent substrates are used on the first substrate 11 and the second substrate 12, and no color resistance layer is arranged. Therefore, when the reflection display is performed, the black and white picture can be displayed, and when the transmission display is performed by using the self-luminous display panel 30, the color picture can be displayed, so as to realize the function that the self-luminous display device can switch between the black and white picture and the color picture.

[0087] Further, the first pixel units P1 and the second pixel units P2 can correspond to each other one by one, of course, a plurality of first pixel units P1 can also correspond to one second pixel unit P2, for example, 4:1, 9:1, etc.

[0088] The present application also provides a driving method of the self-luminous display device, which is used for driving the self-luminous display device as described above. The driving method comprises:

[0089] In the wide viewing angle mode, the self-luminous display panel 30 is controlled to be turned on, and a common signal Vcom is applied to the auxiliary electrode 111, and a wide viewing angle signal is applied to the control electrode 121, i.e. a wide viewing angle signal, such as a first voltage V1, is applied to all electrode blocks 121c, and the voltage difference between the first voltage V1 and the common voltage signal Vcom is zero or less than a first preset value (0.3V). At this time, the liquid crystal molecules 131 and the dye molecules 132 in the dye liquid crystal layer 13 do not substantially deflect and maintain the initial flat posture, and the included angle between the liquid crystal molecules 131 and the dye molecules 132 and the fast and slow axes of the quarter-wave plate 20 is between 0-90°, such as 45°. The light emitted by the self-luminous display panel 30 can normally pass through the quarter-wave plate 20 and the light adjustment box 10, and wide viewing angle display is achieved.

[0090] Reference Figure 6 As shown in the wide viewing angle mode, the light emitted by the self-luminous display panel 30 can normally pass through the quarter-wave plate 20, and when passing through the dye liquid crystal layer 13, the light parallel to the dye molecules 132 is absorbed, and the light perpendicular to the dye molecules 132 can pass through the dye liquid crystal layer 13 to achieve normal display of the picture. When the ambient light I passes through the dye liquid crystal layer 13, the light parallel to the dye molecules 132 is absorbed, and the light perpendicular to the dye molecules 132 can pass through the dye liquid crystal layer 13, and when passing through the quarter-wave plate 20, the linearly polarized light (for example, 0°) becomes circularly polarized light (for example, right-handed). The circularly polarized light is reflected by the reflective structure 33 and becomes circularly polarized light (left-handed) with opposite rotation direction. When the circularly polarized light (left-handed) passes through the quarter-wave plate 20 again, it changes from circularly polarized light (left-handed) to linearly polarized light (90°). At this time, the linearly polarized light (90°) is parallel to the dye molecules 132 and is absorbed by the dye molecules 132. Thus, the reflective structure 33 on the self-luminous display panel reflects the ambient light, which avoids glare and enhances the wide viewing angle display effect.

[0091] In the narrow viewing angle mode, the self-luminous display panel 30 is controlled to be turned on, the common signal Vcom is applied to the auxiliary electrode 111, and the narrow viewing angle signal is applied to the control electrode 121, that is, the second voltage V2 (for example, 5V) is applied to all the electrode blocks 121c, the voltage difference between the second voltage V2 and the common voltage signal Vcom is greater than the second preset value (for example, 2V) and less than the third preset value (for example, 7V), and a vertical electric field is formed between the auxiliary electrode 111 and the control electrode 121. Since the positive liquid crystal molecules will rotate in a direction perpendicular to the electric field lines under the action of the electric field, the positive liquid crystal molecules will be deflected under the action of the vertical electric field, and the dye molecules 132 will be deflected together with the liquid crystal molecules 131, so that the positive liquid crystal molecules and the dye molecules 132 are in an inclined posture. The light with a large viewing angle is absorbed by the dye molecules 132, thereby realizing the narrow viewing angle effect of large viewing angle light collection. Since the positive liquid crystal molecules and the dye molecules 132 are in an inclined posture, the polarization effect of the dye molecules 132 on the light is poor, so that the anti-reflection effect of the ambient light in the narrow viewing angle mode will decrease.

[0092] In the mirror reflection mode, the self-luminous display panel 30 is controlled to be turned off, the common signal Vcom is applied to the auxiliary electrode 111, and the reflection signal is applied to the control electrode 121, that is, the third voltage V3 (for example, 10V) is applied to all the electrode blocks 121c, the voltage difference between the third voltage V3 and the common voltage signal Vcom is greater than the second preset value (for example, 2V), and a vertical electric field is formed between the auxiliary electrode 111 and the control electrode 121. Since the positive liquid crystal molecules will rotate in a direction perpendicular to the electric field lines under the action of the electric field, the positive liquid crystal molecules will be deflected under the action of the vertical electric field, and the dye molecules 132 will be deflected together with the liquid crystal molecules 131, so that the positive liquid crystal molecules and the dye molecules 132 are perpendicular or approximately perpendicular to the first substrate 11 and the second substrate 12. The positive liquid crystal molecules and the dye molecules 132 change from a lying posture to a vertical posture, and the dye molecules 132 have no polarization effect on the light. The ambient light can normally pass through the dye liquid crystal layer 13 and then be reflected back by the reflecting structure 33 to realize the mirror reflection effect. Of course, in other embodiments, the third voltage V3 can also be other values (for example, 5V) to control the liquid crystal molecules 131 and the dye molecules 132 in the dye liquid crystal layer 13 to be in an inclined posture. At this time, the polarization effect of the dye molecules 132 on the light is poor, so that the reflection effect of the self-luminous display device on the ambient light is poor, which can play a role in anti-glare in the mirror reflection mode, so as to be more suitable for vehicle rearview mirrors. The third voltage V3 can be set according to actual needs, so as to adjust the anti-glare effect.

[0093] Reference Figure 11As shown, in the mirror reflection mode, since the positive liquid crystal molecules and the dye molecules 132 in the dye liquid crystal layer 13 are in the vertical posture, the dye molecules 132 have no polarization effect on the light, and the ambient light I passing through the dye liquid crystal layer 13 will not be polarized, can normally pass through the quarter-wave plate 20, and then be reflected back by the reflective structure 33 and normally pass through the quarter-wave plate 20 and the dye liquid crystal layer 13, thereby realizing the mirror reflection effect.

[0094] In the logo display mode, the self-luminous display panel 30 is controlled to be turned off, a common signal Vcom is applied to the auxiliary electrode 111, a bright-state signal, for example, a third voltage V3 (for example, 10V) is applied to the electrode block 121c corresponding to the logo pattern area 110, and the voltage difference between the third voltage V3 and the common voltage signal Vcom is greater than a second preset value (for example, 2V), a vertical electric field is formed between the auxiliary electrode 111 and the control electrode 121, and since the positive liquid crystal molecules will rotate in the direction perpendicular to the electric field lines under the action of the electric field, the positive liquid crystal molecules will be deflected under the action of the vertical electric field, and the dye molecules 132 will be deflected together with the liquid crystal molecules 131, so that the positive liquid crystal molecules and the dye molecules 132 in the logo pattern area 110 are perpendicular or approximately perpendicular to the first substrate 11 and the second substrate 12, the positive liquid crystal molecules and the dye molecules 132 in the logo pattern area 110 change from the lying posture to the vertical posture, the dye molecules 132 have no polarization effect on the light, and the ambient light in the logo pattern area 110 can normally pass through the dye liquid crystal layer 13, and then be reflected back by the reflective structure 33 to realize the mirror reflection effect, so that the logo pattern area 110 is in the bright state. And a dark-state signal, for example, a first voltage V1, is applied to the electrode block 121c corresponding to the non-logo pattern area 120, and the voltage difference between the first voltage V1 and the common voltage signal Vcom is zero or less than a first preset value (0.3V), at this time, the liquid crystal molecules 131 and the dye molecules 132 in the dye liquid crystal layer 13 in the non-logo pattern area 120 do not deflect and remain in the initial lying posture, and the included angle between the liquid crystal molecules 131 and the dye molecules 132 and the fast / slow axis of the quarter-wave plate 20 is between 0-90°, for example, 45°, the non-logo pattern area 120 cannot reflect the ambient light, so that the non-logo pattern area 120 is in the dark state. Since there is a difference in brightness between the logo pattern area 110 and the non-logo pattern area 120, the self-luminous display device can display a logo pattern (LOGO) corresponding to the logo pattern area 110, thereby enhancing the brand effect of the product. Of course, in other embodiments, the third voltage V3 can also be other values (for example, 5V) to control the liquid crystal molecules 131 and the dye molecules 132 in the logo pattern area 110 to be in the inclined posture, at this time, the polarization effect of the dye molecules 132 on the light is poor, so that the reflection effect of the logo pattern area 110 on the ambient light is poor, that is, the brightness is dark, but the brightness is also greater than that of the non-logo pattern area 120.

[0095] In this embodiment, since each electrode block 121c can be controlled individually, the pattern of the identification pattern area 110 can be adjusted arbitrarily according to actual needs, and the practicability is stronger.

[0096] In the identification display mode, for the identification pattern area 110, it can be referred to Figure 11 As shown in the figure, since the positive liquid crystal molecules and the dye molecules 132 in the dye liquid crystal layer 13 are in a vertical posture, the dye molecules 132 have no polarization effect on the light, and the ambient light I passing through the dye liquid crystal layer 13 will not have a polarization effect, can normally pass through the quarter-wave plate 20, and then be reflected back by the reflecting structure 33 and normally pass through the quarter-wave plate 20 and the dye liquid crystal layer 13, thereby realizing a mirror reflection effect, so that the identification pattern area 110 is in a bright state. For the non-identification pattern area 120, it can be referred to Figure 6 As shown in the figure, when the ambient light I of the non-identification pattern area 120 passes through the dye liquid crystal layer 13, the light parallel to the dye molecules 132 will be absorbed, and the light perpendicular to the dye molecules 132 can pass through the dye liquid crystal layer 13, and when it passes through the quarter-wave plate 20, it changes from linearly polarized light (for example, 0°) to circularly polarized light (for example, right-handed). The circularly polarized light is reflected by the reflecting structure 33 and changes to circularly polarized light (left-handed) with opposite rotation direction. When the circularly polarized light (left-handed) passes through the quarter-wave plate 20 again, it changes from circularly polarized light (left-handed) to linearly polarized light (90°). At this time, the linearly polarized light (90°) is parallel to the dye molecules 132 and is absorbed by the dye molecules 132, so that the non-identification pattern area 120 is in a dark state.

[0097] Figure 18 is a structural schematic diagram of the self-luminous display device in the reflective display mode in the third embodiment of the present application. As shown in the figure, Figure 18 In the reflective display mode, the self-luminous display panel 30 is controlled to be closed, a common signal Vcom is applied to the auxiliary electrode 111, and corresponding gray-scale voltages are applied to each of the electrode blocks 121c, so that corresponding vertical electric fields E3 (as shown by the arrows in Figure 18 In the reflective display mode, the self-luminous display panel 30 is controlled to be closed, a common signal Vcom is applied to the auxiliary electrode 111, and corresponding gray-scale voltages are applied to each of the electrode blocks 121c, so that corresponding vertical electric fields E3 (as shown by the arrows in

[0098] In reflective display mode, the second pixel unit P2 in the bright state can be referenced. Figure 11 As shown, since the positive liquid crystal molecules and dye molecules 132 in the dye liquid crystal layer 13 are in a vertical orientation, the dye molecules 132 have virtually no polarization effect on light. Ambient light I passes through the dye liquid crystal layer 13 without polarization and can pass normally through the quarter-wave plate 20. It is then reflected back by the reflective structure 33 and passes normally through the quarter-wave plate 20 and the dye liquid crystal layer 13, thus achieving a specular reflection effect and making the corresponding second pixel unit P2 bright. For the dark state of the second pixel unit P2, refer to... Figure 6 As shown, when the ambient light I of the dark-state second pixel unit P2 passes through the dye liquid crystal layer 13, the light parallel to the dye molecules 132 is absorbed, while the light perpendicular to the dye molecules 132 can pass through the dye liquid crystal layer 13. When it passes through the quarter-wave plate 20, it changes from linearly polarized light (e.g., 0°) to circularly polarized light (e.g., right-handed). The circularly polarized light is reflected by the reflective structure 33 and becomes circularly polarized light with the opposite rotation (left-handed). When the circularly polarized light (left-handed) passes through the quarter-wave plate 20 again, it changes from circularly polarized light (left-handed) to linearly polarized light (90°). At this time, the linearly polarized light (90°) is parallel to the dye molecules 132 and is absorbed by the dye molecules 132, thereby making the corresponding second pixel unit P2 dark.

[0099] Those skilled in the art should understand that the remaining structures and working principles of this embodiment are the same as those of Embodiment 1 and Embodiment 2, and will not be repeated here.

[0100] [Example 4]

[0101] Figure 19 This is a schematic diagram of the self-emissive display device in its initial state according to Embodiment 4 of the present invention. Figure 19 As shown, the self-emissive display device and driving method provided in Embodiment 4 of the present invention are the same as those in Embodiment 1. Figures 1 to 11 Example 2 Figures 12 to 15 Example 3 Figures 16 to 18 The self-emissive display devices and driving methods in the above are basically the same, the difference being:

[0102] In this embodiment, liquid crystal molecule 131 is a negative liquid crystal molecule (a liquid crystal molecule with negative dielectric anisotropy), such as... Figure 19As shown, in the initial state, the alignment direction of the dye liquid crystal layer 13 is perpendicular to the first substrate 11 and the second substrate 12, so that the self-luminous display device is in the mirror reflection effect in the initial state. Of course, the pre-tilt angle of the dye liquid crystal layer 13 in the initial alignment can be between 83°-90°, that is, the liquid crystal molecules 131 and the dye molecules 132 are approximately perpendicular to the first substrate 11 and the second substrate 12 in the initial state, so as to set an initial deflection direction for the negative liquid crystal molecules and the dye molecules 132, so that the angle between the negative liquid crystal molecules and the dye molecules 132 and the fast and slow axes of the quarter-wave plate 20 is between 0-90° in the wide viewing angle mode, the logo display mode and the reflective display mode.

[0103] Those skilled in the art should understand that the remaining structure and working principle of the embodiment are the same as those of Embodiment One, Embodiment Two and Embodiment Three, and will not be described here.

[0104] Figure 20 is one of the schematic plan views of the self-luminous display device in the present application. Figure 21 is another schematic plan view of the self-luminous display device in the present application. Figure 20 and Figure 21 The self-luminous display device is provided with a viewing angle switching button 40 for the user to send a viewing angle switching request to the self-luminous display device. The viewing angle switching button 40 can be a physical button (such as Figure 20 as shown), or a software control or application program (APP) to realize the switching function (such as Figure 21 as shown, the wide and narrow viewing angles are set by a sliding bar). When the user needs to switch between the wide viewing angle, the narrow viewing angle and the mirror reflection, the user can send a viewing angle switching request to the self-luminous display device by operating the viewing angle switching button 40, and finally the voltage applied to the auxiliary electrode 111 and the control electrode 121 is controlled by the driving chip 50. When the voltage difference between the auxiliary electrode 111 and the control electrode 121 is different, the self-luminous display device can realize switching between the wide viewing angle, the narrow viewing angle and the mirror reflection. When switched to the wide viewing angle, the driving method adopts the driving method corresponding to the wide angle mode, and when switched to the narrow viewing angle, the driving method adopts the driving method corresponding to the narrow viewing angle mode. Therefore, the self-luminous display device of the embodiment has strong operation flexibility and convenience, and achieves a multifunctional self-luminous display device integrating entertainment video and privacy protection.

[0105] In this article, the orientation words such as up, down, left, right, front, back and the like are defined with the position of the structure in the drawing and the position of the structure relative to each other, just to express the technical solution clearly and conveniently. It should be understood that the use of the orientation words should not limit the scope of the application. It should also be understood that the terms "first" and "second" used herein are only used for name distinction and do not limit the quantity and order.

[0106] The above is only the preferred embodiment of the present application, not any form of limitation on the present application, although the present application has been disclosed as above with the preferred embodiment, however, it is not intended to limit the present application, any person skilled in the art, without departing from the technical solution of the present application, can make some changes or modifications to the above disclosed technical content, as equivalent embodiments of equivalent changes, but as long as it does not deviate from the technical solution of the present application, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present application, all still belong to the protection scope of the technical solution of the present application.

Claims

1. A self-luminous display device, characterized by comprising: The light modulation box (10), the quarter-wave plate (20) and the self-luminous display panel (30) are sequentially stacked. The light modulation box (10) comprises a first substrate (11), a second substrate (12) arranged opposite to the first substrate (11), and a dye liquid crystal layer (13) between the first substrate (11) and the second substrate (12), the dye liquid crystal layer (13) comprises liquid crystal molecules (131) and dye molecules (132) mixed with each other, the dye molecules (132) rotate synchronously with the liquid crystal molecules (131), the first substrate (11) is provided with an auxiliary electrode (111), and the second substrate (12) is provided with a control electrode (121) matched with the auxiliary electrode (111). The self-luminous display panel (30) is used for controlling the display of gray scale pictures, and the self-luminous display panel (30) is provided with a light reflection structure (33) for reflecting ambient light. In the wide viewing angle mode, the self-luminous display panel (30) is in an open state, the liquid crystal molecules (131) and the dye molecules (132) in the dye liquid crystal layer (13) are in a flat posture, and the included angle between the alignment direction of the liquid crystal molecules (131) and the dye molecules (132) in the dye liquid crystal layer (13) and the fast / slow axis of the quarter-wave plate (20) is between 0-90°; in the narrow viewing angle mode, the self-luminous display panel (30) is in an open state, the liquid crystal molecules (131) and the dye molecules (132) in the dye liquid crystal layer (13) are in an inclined posture; in the mirror reflection mode, the self-luminous display panel (30) is in a closed state, and the liquid crystal molecules (131) and the dye molecules (132) in the dye liquid crystal layer (13) are in an inclined posture or a vertical posture.

2. The self-luminous display device according to claim 1, wherein The light reflection structure (33) is a grid structure and is located between first pixel units (P1) of the self-luminous display panel (30) and a non-display area.

3. The self-luminous display device according to claim 2, wherein The light reflection structure (33) comprises a first scanning line (331) and a first data line (332) on the self-luminous display panel (30).

4. The self-luminous display device according to claim 1, wherein The liquid crystal molecules (131) are positive liquid crystal molecules, the alignment direction of the dye liquid crystal layer (13) is parallel to the first substrate (11) and the second substrate (12), and the included angle between the alignment direction of the dye liquid crystal layer (13) and the fast / slow axis of the quarter-wave plate (20) is between 0-90°. Or, the liquid crystal molecules (131) are negative liquid crystal molecules, and the alignment direction of the dye liquid crystal layer (13) is perpendicular to the first substrate (11) and the second substrate (12).

5. The self-luminous display device according to claim 1, wherein In the wide viewing angle mode, the included angle between the alignment direction of the liquid crystal molecules (131) and the dye molecules (132) in the dye liquid crystal layer (13) and the fast / slow axis of the quarter-wave plate (20) is 45°.

6. The self-luminous display device according to any one of claims 1 to 5, wherein The self-luminous display device has an identification pattern area (110) and a non-identification pattern area (120), the control electrode (121) includes a first control electrode (121a) corresponding to the identification pattern area (110) and a second control electrode (121b) corresponding to the non-identification pattern area (120), and the first control electrode (121a) and the second control electrode (121b) are insulated and spaced from each other; In the identification display mode, the self-luminous display panel (30) is in an off state, the liquid crystal molecules (131) and the dye molecules (132) corresponding to the identification pattern area (110) are in an inclined attitude or a vertical attitude, the liquid crystal molecules (131) and the dye molecules (132) corresponding to the non-identification pattern area (120) are in a lying attitude, and the angle between the alignment direction of the liquid crystal molecules (131) and the dye molecules (132) corresponding to the non-identification pattern area (120) and the fast / slow axis of the quarter-wave plate (20) is between 0-90°.

7. The self-luminous display device according to any one of claims 1 to 5, wherein The second substrate (12) is provided with a plurality of second scan lines (101) and a plurality of second data lines (102), the second scan lines (101) and the second data lines (102) are insulated and crossed to define a plurality of second pixel units (P2), the control electrode (121) includes a plurality of electrode blocks (121c) corresponding to the second pixel units (P2), and the second substrate (12) is provided with a second thin film transistor (103) in each second pixel unit (P2), and the electrode block (121c) is electrically connected with the second scan line (101) and the second data line (102) adjacent to the second thin film transistor (103) through the second thin film transistor (103). In the reflection display mode, a corresponding gray-scale voltage is applied to each of the electrode blocks (121c).

8. A driving method of a self-luminous display device, characterized by, The driving method for driving the self-luminous display device as claimed in any one of claims 1-7, the driving method comprising: In the wide viewing angle mode, the self-luminous display panel (30) is controlled to be turned on, a common signal (Vcom) is applied to the auxiliary electrode (111), and a wide viewing angle signal is applied to the control electrode (121) to control the liquid crystal molecules (131) and the dye molecules (132) in the dye liquid crystal layer (13) to be in a lying attitude, and the angle between the alignment direction of the liquid crystal molecules (131) and the dye molecules (132) in the dye liquid crystal layer (13) and the fast / slow axis of the quarter-wave plate (20) is between 0-90°; In the narrow viewing angle mode, the self-luminous display panel (30) is controlled to be turned on, a common signal (Vcom) is applied to the auxiliary electrode (111), and a narrow viewing angle signal is applied to the control electrode (121) to control the liquid crystal molecules (131) and the dye molecules (132) in the dye liquid crystal layer (13) to be in an inclined attitude. In the mirror reflection mode, the self-luminous display panel (30) is controlled to be turned off, a common signal (Vcom) is applied to the auxiliary electrode (111), and a reflection signal is applied to the control electrode (121) to control the liquid crystal molecules (131) and the dye molecules (132) in the dye liquid crystal layer (13) to be in the tilted state or the vertical state.

9. The driving method of a self-luminous display device according to claim 8, wherein The self-luminous display device has an identification pattern area (110) and a non-identification pattern area (120), the control electrode (121) includes a first control electrode (121a) corresponding to the identification pattern area (110) and a second control electrode (121b) corresponding to the non-identification pattern area (120), the first control electrode (121a) and the second control electrode (121b) are insulated and spaced from each other, and the driving method comprises: In the identification display mode, the self-luminous display panel (30) is controlled to be turned off, a common signal (Vcom) is applied to the auxiliary electrode (111), a bright state signal is applied to the first control electrode (121a) to control the liquid crystal molecules (131) and the dye molecules (132) corresponding to the identification pattern area (110) to be in the tilted state or the vertical state, and a dark state signal is applied to the second control electrode (121b) to control the liquid crystal molecules (131) and the dye molecules (132) corresponding to the non-identification pattern area (120) to be in the flat state, and the angle between the alignment direction of the liquid crystal molecules (131) and the dye molecules (132) corresponding to the non-identification pattern area (120) and the fast / slow axis of the quarter-wave plate (20) is between 0-90°.

10. The driving method of a self-luminous display device according to claim 8, wherein The second substrate (12) is provided with a plurality of second scan lines (101) and a plurality of second data lines (102), the second scan lines (101) and the second data lines (102) are insulated and crossed to define a plurality of second pixel units (P2), the control electrode (121) includes a plurality of electrode blocks (121c) corresponding to the second pixel units (P2), the second substrate (12) is provided with a second thin film transistor (103) in each of the second pixel units (P2), and the electrode block (121c) is electrically connected with the second scan line (101) and the second data line (102) adjacent to the second thin film transistor (103) through the second thin film transistor (103), and the driving method comprises: In the reflection display mode, the self-luminous display panel (30) is controlled to be turned off, a common signal (Vcom) is applied to the auxiliary electrode (111), and a corresponding gray scale voltage is applied to each of the electrode blocks (121c) to control each of the second pixel units (P2) to present a corresponding brightness.

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