Display panel, driving method and display device
By setting a transmittance adjustment module on the LCD screen, including a transmittance variation layer and a floating electrode, brightness adjustment and privacy mode switching can be achieved, solving the problems of high difficulty and high cost in brightness control in the prior art, and providing a low-cost privacy solution.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- MIANYANG HKC OPTOELECTRONICS TECH CO LTD
- Filing Date
- 2024-01-16
- Publication Date
- 2026-07-03
AI Technical Summary
Existing LCD screens are difficult to implement privacy protection functions that require high brightness control, have complex manufacturing processes, and are costly, making it difficult to meet users' needs for multi-functional display modes.
By setting a transmittance adjustment module on the display panel, including a stacked transmittance variation layer and a floating electrode, the transmittance of the transmittance variation layer is controlled by voltage to achieve switching between privacy and sharing modes. The transmittance adjustment module is designed according to the display area and pixels, and consists of an electrochromic film and an electrochromic layer to achieve brightness adjustment.
It achieves simple brightness adjustment, low cost, and effective privacy protection, avoids reduced viewing angle, and meets users' needs for multi-functional display modes.
Smart Images
Figure CN117784458B_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of display technology, and more particularly to a display panel, driving method, and display device. Background Technology
[0002] Liquid Crystal Displays (LCDs) have many advantages, such as thinness, energy saving, and no radiation, and have been widely used, becoming an indispensable product in modern IT and visual products. With the advancement of social economy and science and technology, users have different visual needs for shared and confidential information. Single-mode displays can no longer meet the needs of users. Ideally, LCDs should have multi-functional display modes and the ability to freely switch between display modes. Currently, privacy display products are especially sought after.
[0003] Currently, many methods are used to achieve privacy protection for displays on the market. These include applying privacy films to the display; adjusting the backlight to create contrast differences; and using dual-layer, triple-layer, or multi-layer screens. These methods mainly interfere with light emitted from wide viewing angles, thereby reducing the brightness, contrast, and clarity of the display in that direction. From the comparison of privacy protection performance, it can be seen that although brightness is an easily controllable optical quantity, achieving a good privacy protection effect requires very high brightness control, which is difficult to achieve, has complex processes, and is also costly. Summary of the Invention
[0004] The purpose of this application is to provide a display panel, driving method, and display device that features simple brightness adjustment, low cost, and privacy protection.
[0005] This application discloses a display panel, which includes a first substrate and a second substrate disposed opposite each other, and a liquid crystal layer disposed between the first substrate and the second substrate. The display panel has a plurality of transmittance adjustment modules disposed in the light emission direction. Along the scan line direction of the display panel, the display panel is divided into a plurality of display areas, and the plurality of transmittance adjustment modules are disposed one by one corresponding to the plurality of display areas of the display panel. The transmittance adjustment module includes a transmittance variation layer and a floating electrode stacked together. The floating electrode is used to change the transmittance of the transmittance variation layer to realize the display panel in privacy mode and sharing mode.
[0006] Optionally, each display area includes at least one pixel, each transmittance adjustment module is set corresponding to the opening area of each pixel, the first substrate is an array substrate, the second substrate is a color filter substrate, the color filter substrate includes a substrate and a color resist layer disposed on the substrate, the transmittance adjustment module is disposed between the substrate and the color resist layer, and the floating electrode is disposed on the side of the transmittance variation layer that is close to or far from the substrate.
[0007] Optionally, each display area includes at least one pixel, each transmittance adjustment module is set for the opening area of each pixel, the first substrate is an array substrate, the second substrate is a color filter substrate, the color filter substrate includes a substrate and a color resist layer disposed on the substrate, the transmittance adjustment module is disposed on the side of the color resist layer away from the substrate, and the floating electrode is disposed on the side of the transmittance adjustment layer close to the substrate.
[0008] Optionally, the transmittance variation layer is an electro-optical film. From the center of the display panel towards any edge of the display panel, the resistance of the floating electrode corresponding to each pixel increases from small to large. All the floating electrodes can receive the same input voltage and output different output voltages, thus making the transmittance of the electro-optical film different. Specifically, in the privacy mode of the display panel, the transmittance of the electro-optical film decreases sequentially from the center of the display panel towards any edge of the display panel. In the shared mode of the display panel, the transmittance of the electro-optical film is the maximum transmittance of the electro-optical film, and the transmittance of the electro-optical film in the transmittance adjustment module corresponding to all pixels is equal.
[0009] Optionally, each display area includes one pixel, and each transmittance adjustment module is set with an opening area corresponding to each pixel. The pixel includes a red pixel, a green pixel, and a blue pixel. In the privacy mode of the display panel, the transmittance of the transmittance change layer corresponding to the blue pixel is greater than the transmittance of the transmittance change layer corresponding to the red pixel or the green pixel.
[0010] Optionally, a pixel electrode layer is provided on the side of the color resist layer away from the substrate, and the transmittance variation layer is an electrochromic layer. The resistance of the floating electrode corresponding to each pixel is the same. All the floating electrodes and pixel electrode layers can receive input voltages of different magnitudes, generating electric fields of different magnitudes, thereby making the transmittance of the electrochromic layer different. In the privacy mode of the display panel, the transmittance of the electrochromic layer decreases sequentially from the center of the display panel toward any edge of the display panel. In the shared mode of the display panel, all the electrochromic layers are transparent.
[0011] Optionally, the transmittance variation layer covers the floating electrode, and the width of the transmittance variation layer is less than or equal to the width of the opening of the corresponding pixel.
[0012] Optionally, each display area includes at least one pixel, each transmittance adjustment module is set corresponding to the opening area of each pixel, the second substrate includes a base, a groove is provided on the side of the base near the first substrate, the width of the groove is less than or equal to the width of the opening of the pixel, and the transmittance adjustment module is disposed in the groove.
[0013] This application also discloses a driving method for driving any of the display panels described above, the driving method comprising the steps of:
[0014] Detect the display mode of the display panel;
[0015] Generate an input voltage signal based on the detection results; and
[0016] The transmittance of the transmittance adjustment module is adjusted by the voltage generated by the input voltage signal to realize the display panel's privacy mode and sharing mode display.
[0017] In the privacy mode of the display panel, the transmittance of the transmittance adjustment module decreases sequentially from the center of the display panel toward any edge of the display panel. In the shared mode of the display panel, the transmittance of the transmittance adjustment module is the maximum transmittance of the transmittance adjustment module, and the transmittance of the transmittance adjustment module corresponding to all pixels is equal.
[0018] This application also discloses a display device, which includes a display panel and a driving circuit as described above. The driving circuit outputs a driving voltage to a floating electrode in the transmittance adjustment module of the display panel. The transmittance of the transmittance changing layer is changed by the voltage of the floating electrode to realize the display panel in privacy mode and sharing mode.
[0019] The light-emitting surface of the display panel in this application is provided with a transmittance adjustment module including a transmittance variation layer and a floating electrode stacked together. The floating electrode receives voltage, and the transmittance value of the transmittance variation layer is adjusted according to the voltage magnitude of the floating electrode. In the display panel sharing mode or wide viewing angle display, the floating electrode does not change the transmittance of the transmittance variation layer. The floating electrode and the transmittance variation layer are used as a transparent film, which will not reduce the viewing angle of the display panel. When the display panel needs to be privacy-protected, the transmittance of the transmittance variation layer can be reduced, thereby reducing the viewing angle, achieving privacy protection, and avoiding privacy leakage. Attached Figure Description
[0020] The accompanying drawings, which form part of the specification, are used to provide a further understanding of the embodiments of this application and illustrate the implementation methods of this application, together with the textual description, to explain the principles of this application. Obviously, the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without any creative effort. In the drawings:
[0021] Figure 1 This is a schematic diagram of the structure of a display panel according to the first embodiment of this application;
[0022] Figure 2 This is a schematic diagram of the structure of another display panel according to the first embodiment of this application;
[0023] Figure 3 This is a schematic diagram of the structure of the display panel according to the second embodiment of this application;
[0024] Figure 4 This is a schematic diagram of the structure of the display panel according to the third embodiment of this application;
[0025] Figure 5 This is a schematic diagram of the structure of the display panel according to the fourth embodiment of this application;
[0026] Figure 6 This is a schematic diagram of the structure of the display panel according to the fifth embodiment of this application;
[0027] Figure 7 This is a schematic diagram of the driving method flow of the sixth embodiment of this application;
[0028] Figure 8 This is a schematic diagram of the display device structure according to the seventh embodiment of this application.
[0029] Wherein, 100 is a display panel; 110 is a first substrate; 120 is a second substrate; 121 is a substrate; 122 is a color resist layer; 123 is a groove; 124 is a color resist; 125 is a black matrix; 126 is a pixel electrode layer; 127 is a planarization layer; 130 is a liquid crystal layer; 140 is a transmittance adjustment module; 150 is a floating electrode; 160 is a transmittance variation layer; 161 is an electrochromic film; 162 is an electrochromic layer; 170 is a pixel; 171 is an opening area; 180 is a polyimide layer; 200 is a driving circuit; 300 is a display device; R is a red pixel; G is a green pixel; B is a blue pixel. Detailed Implementation
[0030] It should be understood that the terminology, specific structural and functional details used herein are merely for describing particular embodiments and are representative. However, this application may be implemented in many alternative forms and should not be construed as being limited to the embodiments set forth herein.
[0031] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating relative importance or implying the number of technical features indicated. Therefore, unless otherwise stated, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature; "multiple" means two or more. The term "comprising" and any variations thereof mean non-exclusive inclusion, where one or more other features, integers, steps, operations, units, components, and / or combinations thereof may be present or added.
[0032] In addition, terms such as “center,” “horizontal,” “up,” “down,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer” that indicate orientation or positional relationship are based on the orientation or relative positional relationship shown in the accompanying drawings. They are only for the purpose of simplifying the description of this application and do not indicate that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.
[0033] Furthermore, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0034] The present application will now be described in detail with reference to the accompanying drawings and optional embodiments.
[0035] like Figure 1As shown in the first embodiment of this application, a display panel 100 is disclosed, including a first substrate 110 and a second substrate 120 disposed opposite each other, and a liquid crystal layer 130 disposed between the first substrate 110 and the second substrate 120. Polyimide layers 180 (PI) are disposed above and below the liquid crystal layer 130 near the first substrate 110 and the second substrate 120. Support pillars (PS) are also formed between the two substrates. The display panel 100 has multiple transmittance adjustment modules 140 disposed in the light emission direction. Along the scan line direction of the display panel 100, the display panel 100 is divided into multiple display areas. Each of the multiple transmittance adjustment modules 140 corresponds to one of the multiple display areas of the display panel 100, and the transmittance adjustment modules 140 can adjust the transmittance of the display panel 100. The transmittance of light is adjusted to change the viewing angle of the display panel 100. The transmittance adjustment module 140 includes a transmittance variation layer 160 and a floating electrode 150 stacked together. The positions of the transmittance variation layer 160 and the floating electrode 150 can be interchanged; the floating electrode 150 can be on top and the transmittance variation layer 160 on the bottom, or vice versa. The floating electrode 150 is used to change the transmittance of the transmittance variation layer 160 to enable the display panel 100 to display in privacy mode and sharing mode. Typically, to reduce the influence of the electric field generated by the floating electrode 150 on the deflection of liquid crystal molecules, the floating electrode 150 is usually positioned on the side of the transmittance variation layer 160 away from the liquid crystal layer 130.
[0036] Generally, the first substrate 110 is an array substrate, and the second substrate 120 is a color filter substrate. The color filter substrate includes a base 121 and a color resist layer 122 disposed on the base 121. Each display area includes at least one pixel 170. Each transmittance adjustment module 140 is disposed corresponding to the opening area 171 of each pixel 170. The transmittance adjustment module 140 is disposed between the base 121 and the color resist layer 122. A pixel electrode layer 126 and a planarization layer 127 are respectively disposed on the side of the color resist layer 122 away from the base 121. The floating electrode 150 is disposed on the side of the transmittance variation layer 160 close to the base 121. Specifically, the color resist layer 122 includes a color resist 124 and a black matrix 125. The transmittance adjustment module 140 is disposed on the color resist 124, and the sum of the thicknesses of the transmittance adjustment module 140 and the color resist 124 is equal to the thickness of the black matrix 125. This can better ensure the flatness of the side in contact with the substrate 121 and avoid the area where the transmittance adjustment module 140 and the color resist 124 are disposed and the area where the black matrix 125 is disposed have different thicknesses, which could cause the substrate 121 to break under stress. It should be noted that the transmittance adjustment module 140 can be disposed not only on the color filter substrate but also on the array substrate, such as on the PI layer of the array substrate.
[0037] This embodiment mainly uses the example of a layer disposed on a color filter substrate for explanation. The transmittance variation layer 160 is an electro-controlled thin film 161, which is a metal composite thin film formed by metals such as tungsten and lithium, and non-metallic materials. When receiving voltage, it will change its internal structure according to the magnitude of the voltage, reflecting the transmittance under different bands. From the center of the display panel towards any edge of the display panel, the resistance of the floating electrode 150 corresponding to each pixel 170 increases from small to large. That is, from the center of the display panel to the edges around the perimeter, the resistance of the floating electrode 150 increases from small to large, and the closer to the edge of the display panel, the greater the resistance of the floating electrode 150. Moreover, all the floating electrodes 150 can receive the same input voltage and output different output voltages, thereby making the transmittance of the electro-controlled thin film 161 different. Figure 1 For example, in the privacy mode of the display panel 100, the transmittance of the electronic control film 161 decreases sequentially from the center of the display panel 100 to both sides, i.e., in the horizontal direction. In the sharing mode of the display panel 100, the transmittance of the electronic control film 161 is the maximum transmittance of the electronic control film 161, and the transmittance of the electronic control film 161 in the transmittance adjustment module 140 corresponding to all pixels 170 is equal.
[0038] A floating electrode 150 and an electrostatic control film 161 are provided for each color resist 124. At wide viewing angles, the floating electrode 150 and the electrostatic control film 161 act as transparent films, which can provide anti-static design. At this time, the display panel 100 is the same as a general display panel 100, but with two additional layers: a floating electrode structure layer and an electrostatic control film layer. At narrow viewing angles, the floating electrode 150 supplies different voltages to the electrostatic control film 161 on different color resists 124 due to different resistances. Taking the red pixel R, green pixel G, and blue pixel B as an example, in the three pixels 170, the voltage of the floating electrode 150 area corresponding to the two pixels on the two sides is the same V1, while the voltage of the area of the middle pixel 170 is V2, where V1 ≠ V2. As V1 gradually changes, the transmittance gradient of the transmittance variation layer 160 decreases, ultimately leading to a reduction in the viewing angle.
[0039] In addition, it should be noted that in this embodiment, the electronic control film 161 and the floating electrode 150 can be set for each pixel 170 or for a certain area. That is, several pixels 170 can be divided into a region, and a corresponding floating electrode 150 and electronic control film 161 can be set in this region.
[0040] like Figure 2As shown, another manifestation of this embodiment is that the arrangement of the color resist 124 and the black matrix 125 in the color resist layer 122 is different. The color resists 124 are interconnected, and the black matrix 125 is formed at the junction of the color resists 124. The corresponding electronic control film 161 and floating electrode 150 are disposed above the color resist 124, with their center points on the same center line. The width of the electronic control film 161 and the floating electrode 150 is smaller than the width of the color resist 124.
[0041] like Figure 3 As shown, in the second embodiment of this application, unlike the first embodiment described above, the transmittance adjustment module 140 is disposed on the side of the color resist layer 122 away from the substrate 121, and the floating electrode 150 is disposed on the side of the electro-control film 161 close to the substrate 121. In this embodiment, the color resist layer 122 is formed first during preparation, and then the floating electrode 150 and the electro-control film 161 are formed on the side of the color resist layer 122 away from the substrate 121. The electro-control film 161 and the floating electrode 150 are only disposed corresponding to the color resist 124, and are not disposed at other positions. After the preparation of the electro-control film 161 is completed, a planarization layer 127 is disposed, which covers the electro-control film 161, the floating electrode 150, and the color resist layer 122.
[0042] like Figure 4 As shown, in the third embodiment of this application, unlike the first embodiment described above, a groove 123 is provided on the side of the substrate 121 near the first substrate 110. Generally, the width of the groove 123 is less than or equal to the width of the opening of the pixel 170 to avoid the groove 123 being too large and causing the substrate 121 to crack, while also allowing for better placement of the transmittance adjustment module 140; otherwise, the width of the groove 123 refers to... Figure 4 The width in the horizontal direction; the floating electrode 150 and the electronic control film 161 of the transmittance adjustment module 140 are placed in the groove 123 of the substrate 121. While achieving privacy protection, the overall thickness of the second substrate 120 can be reduced, so as to avoid the display panel 100 becoming thicker than the normal display panel 100 after the addition of the floating electrode 150 and the electronic control film 161, thereby reducing light loss on the second substrate 120.
[0043] like Figure 5As shown in the fourth embodiment of this application, each display area includes a pixel 170, and each transmittance adjustment module 140 is set corresponding to the opening area 171 of each pixel 170. The pixel 170 includes a red pixel R, a green pixel G, and a blue pixel B. In the privacy mode of the display panel 100, the transmittance of the transmittance change layer 160 corresponding to the blue pixel B is greater than the transmittance of the transmittance change layer 160 corresponding to the red pixel R or the green pixel G. When the transmittance of the floating electrode 150 is less than the transmittance of the electronic control film 161, and the voltage remains unchanged, the overall transmittance of the transmittance adjustment module 140 corresponding to the color resist 124 corresponding to the blue pixel B is greater than the transmittance of the transmittance adjustment module corresponding to the color resist 124 of other colors by reducing the thickness of the floating electrode 150 and increasing the thickness of the electronic control film 161.
[0044] Since the blue light corresponding to blue pixel B suffers greater light loss during actual transmission than other colors, the electronic control film 161 for the blue pixel B region needs to provide higher transmittance. That is, the transmittance of the electronic control film 161 on the color resist 124 corresponding to blue pixel B is greater than the transmittance of the electronic control film 161 on the color resist 124 corresponding to red pixel R, and greater than the transmittance of the electronic control film 161 on the color resist 124 corresponding to green pixel G.
[0045] To change the transmittance of the electronic control film 161, the resistance of the floating electrode 150 can be made different during its formation. If the same voltage is received, the voltage transmitted to the electronic control film 161 will be different, resulting in different transmittances, thereby achieving the switching between privacy and normal viewing angles. Alternatively, the resistance of the floating electrode 150 can be made the same, and the input voltage value can be changed when voltage is applied, resulting in different final voltages input to the electronic control film 161, thus generating electronic control films 161 with different transmittances.
[0046] like Figure 6As shown in the fifth embodiment of this application, the color resist layer 122 has a pixel electrode layer 126 on the side away from the substrate 121, the transmittance variation layer 160 is an electrochromic layer 162, and the floating electrode 150 corresponding to each pixel 170 has the same resistance; all the floating electrodes 150 and pixel electrode layers 126 can receive different magnitudes of input voltage, generating different magnitudes of electric fields, thereby making the transmittance of the electrochromic layer 162 different; wherein, in the privacy mode of the display panel 100, the transmittance of the electrochromic layer 162 decreases sequentially from the center of the display panel 100 toward the edge of any side of the display panel 100; in the shared mode of the display panel 100, all the electrochromic layers 162 are transparent; each Each display area includes at least one pixel 170. Each transmittance adjustment module 140 is set corresponding to the aperture area 171 of each pixel 170. The transmittance variation layer 160 covers the floating electrode 150. The floating electrode 150 is set on the side of the transmittance variation layer 160 away from the substrate 121. The width of the transmittance variation layer 160 is less than or equal to the width of the corresponding aperture of the pixel 170 to avoid the transmittance variation layer 160 being too large, which would increase the transmittance of the pixel edge and affect the display of the edge. In addition, the width of the electrochromic layer 162 is greater than the width of the floating electrode 150, and the electrochromic layer 160 and the color resist 124 surround the floating electrode 150. The aperture ratio of the pixel 170 is adjusted and changed by the electrochromic layer 160 and the floating electrode 150 together.
[0047] Unlike the electrochromic film 161, the color change of the electrochromic layer 162 requires a change in the electric field formed by the pixel electrode layer 126 and the floating electrode 150. The transmittance of the electrochromic layer 162 has a larger range of change and the adjustment range can be smaller. In addition, when some pixels 170 need to display a black screen, the corresponding electrochromic layer 162 can be controlled to turn black to prevent ambient light from passing through the color resist layer 122 into the liquid crystal layer 130 and causing problems such as light mixing.
[0048] like Figure 7 As shown, in the sixth embodiment of this application, a driving method for a display device is disclosed, used to drive the display panel as described in the above embodiments. The driving method includes the following steps:
[0049] S1: Detect the display mode of the display panel;
[0050] S2: Generates an input voltage signal based on the detection results; and
[0051] S3: The transmittance of the transmittance adjustment module is adjusted by the voltage generated by the input voltage signal to realize the display of the privacy mode and sharing mode of the display panel;
[0052] The transmittance adjustment module includes a transmittance variation layer and a floating electrode stacked together. The transmittance variation layer is an electrochromic film or an electrochromic layer. In the privacy mode of the display panel, the transmittance of the transmittance variation layer decreases sequentially from the center of the display panel toward any edge of the display panel. In the shared mode of the display panel, the transmittance of the transmittance variation layer is the maximum transmittance of the electrochromic film or electrochromic layer. The transmittance of the electrochromic film or electrochromic layer in the transmittance adjustment module corresponding to all pixels is equal.
[0053] By applying different voltages to the transmittance variation layer using floating electrodes, the transmittance of the transmittance variation layer is changed, thereby achieving a gradual decrease in the transmittance of the display screen from the center to both sides, thus realizing a gradual privacy protection effect on the display screen. Furthermore, the transmittance of each pixel can be adjusted, thereby achieving more precise viewing angle changes.
[0054] like Figure 8 As shown, as the seventh embodiment of this application, a display device 300 is disclosed. The display device 300 includes a display panel 100 and a driving circuit 200 as described in any of the above embodiments. The driving circuit 200 outputs a driving voltage to the floating electrode 150 in the transmittance adjustment module 140 of the display panel 100. The transmittance of the transmittance changing layer 160 is changed by the voltage of the floating electrode 150, so as to realize the display of the display panel 100 in privacy mode and sharing mode.
[0055] It should be noted that the limitations on each step involved in this solution are not considered as limiting the order of steps, provided that they do not affect the implementation of the specific solution. The steps listed first can be executed first, later, or even simultaneously. As long as this solution can be implemented, it should be considered to fall within the scope of protection of this application.
[0056] It should be noted that the inventive concept of this application can form many embodiments, but due to the limited space of the application documents, they cannot all be listed. Therefore, without conflict, the embodiments described above or the technical features can be arbitrarily combined to form new embodiments. After the embodiments or technical features are combined, the original technical effect will be enhanced.
[0057] The above description, in conjunction with specific optional embodiments, provides a further detailed explanation of this application and should not be construed as limiting the specific implementation of this application to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of this application, and all such modifications or substitutions should be considered within the scope of protection of this application.
Claims
1. A display panel, comprising a first substrate and a second substrate disposed opposite each other, and a liquid crystal layer disposed between the first substrate and the second substrate, characterized in that, The display panel is provided with multiple transmittance adjustment modules in the light emission direction. Along the scan line direction of the display panel, the display panel is divided into multiple display areas, and the multiple transmittance adjustment modules are set one by one to the multiple display areas of the display panel. The transmittance adjustment module includes a transmittance variation layer and a floating electrode stacked together. The floating electrode is used to change the transmittance of the transmittance variation layer to enable the display panel to display in privacy mode and sharing mode. The transmittance variation layer is an electrochromic film or an electrochromic layer. In the privacy mode of the display panel, the transmittance of the transmittance variation layer decreases sequentially from the center of the display panel toward any edge of the display panel. In the sharing mode of the display panel, the transmittance of the transmittance variation layer is the maximum transmittance of the electrochromic film or electrochromic layer. The transmittance of the electrochromic film or electrochromic layer in the transmittance adjustment module is equal for all pixels.
2. The display panel as described in claim 1, characterized in that, Each display area includes at least one pixel, and each transmittance adjustment module is set for the opening area of each pixel. The first substrate is an array substrate, and the second substrate is a color filter substrate. The color filter substrate includes a substrate and a color resist layer disposed on the substrate. The transmittance adjustment module is disposed between the substrate and the color resist layer, and the floating electrode is disposed on the side of the transmittance variation layer that is close to or far from the substrate.
3. The display panel as described in claim 1, characterized in that, Each display area includes at least one pixel, and each transmittance adjustment module is set for the opening area of each pixel. The first substrate is an array substrate, and the second substrate is a color filter substrate. The color filter substrate includes a substrate and a color resist layer disposed on the substrate. The transmittance adjustment module is disposed on the side of the color resist layer away from the substrate, and the floating electrode is disposed on the side of the transmittance adjustment layer close to the substrate.
4. The display panel as described in claim 1, characterized in that, The transmittance variation layer is an electro-controlled thin film. From the center of the display panel toward any edge of the display panel, the resistance of the floating electrode corresponding to each pixel increases from small to large. All the floating electrodes can receive the same input voltage and output different output voltages, thereby making the transmittance of the electro-controlled thin film different. In the privacy mode of the display panel, the transmittance of the electronic control film decreases sequentially from the center of the display panel toward any edge of the display panel. In the shared mode of the display panel, the transmittance of the electronic control film is the maximum transmittance of the electronic control film, and the transmittance of the electronic control film in the transmittance adjustment module corresponding to all pixels is equal.
5. The display panel as described in claim 1, characterized in that, Each display area includes one pixel, and each transmittance adjustment module is set to the aperture area of each pixel. The pixel includes red pixels, green pixels and blue pixels. In the privacy mode of the display panel, the transmittance of the transmittance variation layer corresponding to the blue pixel is greater than the transmittance of the transmittance variation layer corresponding to the red pixel or the green pixel.
6. The display panel as described in claim 2, characterized in that, A pixel electrode layer is provided on the side of the color resist layer away from the substrate. The transmittance variation layer is an electrochromic layer. The resistance of the floating electrode corresponding to each pixel is the same. All the floating electrodes and pixel electrode layers can receive different input voltages and generate different electric fields, thereby making the transmittance of the electrochromic layer different. In the privacy mode of the display panel, the transmittance of the electrochromic layer decreases sequentially from the center of the display panel toward any edge of the display panel. In the shared mode of the display panel, all of the electrochromic layers are transparent.
7. The display panel as described in claim 2 or 6, characterized in that, The transmittance variation layer covers the floating electrode, and the width of the transmittance variation layer is less than or equal to the width of the opening of the corresponding pixel.
8. The display panel as described in claim 1, characterized in that, Each display area includes at least one pixel, each transmittance adjustment module is set corresponding to the opening area of each pixel, the second substrate includes a base, a groove is provided on the side of the base near the first substrate, the width of the groove is less than or equal to the width of the opening of the pixel, and the transmittance adjustment module is disposed in the groove.
9. A driving method for driving a display panel as described in any one of claims 1-8, characterized in that, The driving method includes the following steps: Detect the display mode of the display panel; The input voltage signal is generated based on the detection results; as well as The transmittance of the transmittance adjustment module is adjusted by the voltage generated by the input voltage signal to realize the display panel's privacy mode and sharing mode display. In the privacy mode of the display panel, the transmittance of the transmittance adjustment module decreases sequentially from the center of the display panel toward any edge of the display panel. In the shared mode of the display panel, the transmittance of the transmittance adjustment module is the maximum transmittance of the transmittance adjustment module, and the transmittance of the transmittance adjustment module corresponding to all pixels is equal.
10. A display device, characterized in that, The device includes a display panel and a driving circuit as described in any one of claims 1-8. The driving circuit outputs a driving voltage to a floating electrode in the transmittance adjustment module of the display panel. The voltage of the floating electrode changes the transmittance of the transmittance changing layer, thereby enabling the display panel to display in privacy mode and sharing mode.