Display panel, control method thereof, and display device

Abstract

The application discloses a display panel and a control method thereof, and a display device. The display panel comprises a first substrate, a thin film transistor layer located on one side of the first substrate, a pixel electrode layer located on a side of the thin film transistor layer away from the first substrate, a first liquid crystal layer located on a side of the pixel electrode layer away from the thin film transistor layer, a second substrate located on a side of the first liquid crystal layer away from the pixel electrode layer, a first transparent electrode layer located on a side of the second substrate away from the first liquid crystal layer, a color resistance layer and a second liquid crystal layer arranged in the same layer, the color resistance layer comprising a plurality of sub-color resistance blocks arranged at intervals, the second liquid crystal being located between adjacent sub-color resistance blocks, the color resistance layer being located on a side of the first transparent electrode layer away from the second substrate, and a second transparent electrode layer located on a side of the color resistance layer away from the first transparent electrode layer. Thus, a semi-transmissive and semi-reflective display panel with high aperture ratio in a reflection mode and high contrast in a transmission mode can be obtained.

Description

Technical Field

[0001] This application relates to the field of display technology, and more specifically, to display panels and their control methods and display devices. Background Technology

[0002] Currently, existing display technologies include liquid crystal displays (LCDs), organic light-emitting diode (OLED) displays, inorganic light-emitting diode (ILD) displays, electronic paper, and reflective displays. LCDs can be further divided into transmissive and reflective LCDs based on their light source. Transmissive LCDs use a backlight to provide light to the LCD panel. The light passes through auxiliary structures such as backlights and filters to reach the display surface, achieving the effect of displaying an image. Transmissive LCDs have the advantage of excellent display capabilities in low-light or no-light environments. Reflective LCDs (such as LCD electronic price tags) are provided with light from the external environment. The light passes through the liquid crystal layer, is reflected by a transparent reflective layer on the array substrate, and then passes through the liquid crystal layer again to display the image. Reflective LCDs have the advantage of excellent display capabilities in strong light environments. However, both transmissive and reflective LCDs still have problems that need to be solved.

[0003] Therefore, current display panels, their control methods, and display devices still need improvement. Summary of the Invention

[0004] This application is based on the inventor's discoveries and understanding of the following facts and problems:

[0005] The inventors discovered that the disadvantages of transmissive liquid crystal display devices are serious display problems such as glare and poor readability in strong light environments (such as outdoor sunlight), while the disadvantages of reflective liquid crystal display devices are blurry displays in low light or no light environments, which seriously affects the display quality of the liquid crystal display device.

[0006] Given the respective advantages and disadvantages of transmissive and reflective liquid crystal displays (LCDs), a transflective-reflective LCD has emerged, combining the advantages of both. Furthermore, the inventors have discovered that while the transflective-reflective LCD expands the application scenarios of LCDs by simultaneously possessing the high contrast, high brightness, and good color purity of transmissive LCDs and the low power consumption, portability, and good visibility in strong light environments of reflective LCDs, a common issue exists: the black matrix (BM) on the color filter substrate in typical transflective-reflective LCDs is a fixed structure. While the black matrix (BM) enhances contrast in transmissive mode, it reduces aperture ratio and consequently decreases reflection efficiency in reflective mode, resulting in a deterioration in display quality.

[0007] This application aims to at least partially alleviate or resolve at least one of the aforementioned problems.

[0008] In one aspect of this application, a display panel is provided, comprising: a first substrate; a thin-film transistor layer located on one side of the first substrate; a pixel electrode layer located on the side of the thin-film transistor layer away from the first substrate; a first liquid crystal layer located on the side of the pixel electrode layer away from the thin-film transistor layer; a second substrate located on the side of the first liquid crystal layer away from the pixel electrode layer; a first transparent electrode layer located on the side of the second substrate away from the first liquid crystal layer; a color resist layer and a second liquid crystal layer, the color resist layer and the second liquid crystal layer being disposed on the same layer, the color resist layer comprising a plurality of spaced sub-color resist blocks, the second liquid crystal layer comprising: a second liquid crystal located between adjacent sub-color resist blocks; a second transparent electrode layer located on the side of the color resist layer away from the first transparent electrode layer, the color resist layer being located on the side of the first transparent electrode layer away from the second substrate; and a third substrate located on the side of the second transparent electrode layer away from the color resist layer, wherein incident light enters from either the side of the first substrate away from the third substrate or the side of the third substrate away from the first substrate. Therefore, a semi-transparent and semi-reflective display panel with a high aperture ratio in reflective mode and a high contrast ratio in transmissive mode can be obtained.

[0009] According to an embodiment of this application, the display panel further includes a backlight source located on the side of the first substrate away from the third substrate. The backlight source provides the incident light to the display panel, and the incident light enters from the side of the first substrate away from the third substrate. This improves the display effect of the display panel in transmissive mode.

[0010] According to an embodiment of this application, the display panel further includes a transparent reflective layer located between the thin-film transistor layer and the first substrate. This improves the display effect of the display panel in reflective mode.

[0011] According to an embodiment of this application, the display panel further includes a backlight source located on the side of the third substrate away from the first substrate. The backlight source provides the incident light to the display panel, and the incident light enters from the side of the third substrate away from the first substrate. This simplifies the structure of the display panel and improves its display effect.

[0012] According to an embodiment of this application, the display panel further includes a third transparent electrode layer, which is located on the side of the second substrate facing the first liquid crystal layer. This further improves the display effect of the display panel in both transmissive and reflective modes.

[0013] According to an embodiment of this application, the surface area of ​​the side of the sub-color resist block closest to the first transparent electrode layer is not greater than the surface area of ​​the side of the sub-color resist block closest to the second transparent electrode layer. This further improves the color display effect of the display panel.

[0014] In another aspect of this application, a method for controlling the aforementioned display panel is proposed, comprising: controlling the deflection of a second liquid crystal in a second liquid crystal layer by respectively controlling the input voltages of a first transparent electrode layer and a second transparent electrode layer. Thus, the display mode of the display panel can be controlled by the aforementioned method.

[0015] According to an embodiment of this application, when the backlight is located on the side of the first substrate away from the third substrate and the second liquid crystal layer is in a light-blocking state, the display panel is a transmissive display panel. Therefore, by controlling the light transmission state of the second liquid crystal layer, flexible switching of the display panel's display mode can be achieved.

[0016] According to an embodiment of this application, when the backlight is located on the side of the first substrate away from the third substrate and the second liquid crystal layer is in a transparent state, the display panel is a reflective display panel. Therefore, by controlling the light-transmitting state of the second liquid crystal layer, flexible switching of the display panel's display mode can be achieved.

[0017] According to embodiments of this application, when the backlight is located on the side of the third substrate away from the first substrate and the second liquid crystal layer is in a light-blocking state, the display panel is a transmissive display panel or a reflective display panel. Therefore, by controlling the light transmission state of the second liquid crystal layer, flexible switching of the display panel's display mode can be achieved.

[0018] According to an embodiment of this application, when the backlight is located on the side of the third substrate away from the first substrate and the second liquid crystal layer is in a light-transmitting state, the display panel is a reflective display panel. Therefore, by controlling the light-transmitting state of the second liquid crystal layer, flexible switching of the display panel's display mode can be achieved.

[0019] In another aspect of this application, a display device is provided, including the aforementioned display panel. Thus, this display device possesses all the features and advantages of the aforementioned display panel, which will not be repeated here. Attached Figure Description

[0020] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0021] Figure 1 A schematic diagram of the structure of a display panel according to an embodiment of this application is shown;

[0022] Figure 2 This shows a schematic diagram of the structure of a display panel according to yet another embodiment of the present application;

[0023] Figure 3 This shows a schematic diagram of the structure of a display panel according to yet another embodiment of the present application;

[0024] Figure 4 This shows a schematic diagram of the structure of a display panel according to yet another embodiment of the present application;

[0025] Figure 5 Showing Figure 1 A schematic diagram of the display panel in transmissive mode;

[0026] Figure 6 Showing Figure 1 A schematic diagram of the display panel in reflective mode;

[0027] Figure 7 Showing Figure 2 A schematic diagram of the display panel in transmissive mode;

[0028] Figure 8 Showing Figure 2 A schematic diagram of the display panel in reflective mode;

[0029] Figure 9 Showing Figure 3 A schematic diagram of the display panel in transmissive mode;

[0030] Figure 10 Showing Figure 3 A schematic diagram of the display panel in reflective mode;

[0031] Figure 11 Showing Figure 4 A schematic diagram of the display panel in transmissive mode;

[0032] Figure 12 Showing Figure 4 A schematic diagram of the display panel in reflection mode.

[0033] Explanation of reference numerals in the attached figures:

[0034] 110: First substrate; 120: Second substrate; 130: Third substrate; 200: Thin film transistor layer; 300: Pixel electrode layer; 410: First liquid crystal layer; 420: Second liquid crystal layer; 510: First transparent electrode layer; 520: Second transparent electrode layer; 530: Third transparent electrode layer; 600: Color resist layer; 610: Sub-color resist block; 700: Transparent reflective layer; 800: Backlight. Detailed Implementation

[0035] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0036] In one aspect of this application, a display panel is provided, with reference to Figures 1-4The system includes: a first substrate 110; a thin-film transistor layer 200 located on one side of the first substrate 110; a pixel electrode layer 300 located on the side of the thin-film transistor layer 200 away from the first substrate 110; a first liquid crystal layer 410 located on the side of the pixel electrode layer 300 away from the thin-film transistor layer 200; a second substrate 120 located on the side of the first liquid crystal layer 410 away from the pixel electrode layer 300; a first transparent electrode layer 510 located on the side of the second substrate 120 away from the first liquid crystal layer 410; a color resist layer 600; and a second liquid crystal layer 420. The second liquid crystal layer 420 is disposed on the same layer, and the color resist layer 600 includes a plurality of spaced sub-color resist blocks 610. The second liquid crystal layer 420 includes: a second liquid crystal, which is located between adjacent sub-color resist blocks 610, and the color resist layer 600 is located on the side of the first transparent electrode layer 510 away from the second substrate 120; a second transparent electrode layer 520, which is located on the side of the color resist layer 600 away from the first transparent electrode layer 510; and a third substrate 130, which is located on the side of the second transparent electrode layer 520 away from the color resist layer 600. Incident light enters from either the side of the first substrate 110 away from the third substrate 130 or the side of the third substrate 130 away from the first substrate 110. This invention replaces the black matrix located between adjacent color resist blocks in related technologies with a second liquid crystal layer through a stacked structure, and combines it with electric field control. By applying different electrical signals to the second liquid crystal layer, the transmittance of the second liquid crystal layer is controlled, allowing the second liquid crystal layer to switch between light transmission and light blocking, thereby achieving a dynamic "black matrix" effect. This solves the technical problem of low aperture ratio in semi-transparent and semi-reflective display panels in reflective mode due to the presence of the black matrix. It enables the display panel to achieve efficient use of light in both transmission and reflection modes, ultimately resulting in a semi-transparent and semi-reflective display panel with a high aperture ratio in reflection mode and a high contrast ratio in transmission mode.

[0037] To facilitate understanding, the principle behind the aforementioned beneficial effects of the display panel in this application will be explained below:

[0038] The display panel in this application replaces the black matrix located between adjacent color resist blocks with a second liquid crystal layer 420, and uses a first transparent electrode layer 510 and a second transparent electrode layer 520 to control the electric field of the second liquid crystal layer 420. Different electrical signals are applied to control the rotation of liquid crystal molecules in the second liquid crystal layer 420, thereby making the second liquid crystal layer exhibit a light-transmitting state or a light-blocking state, thus enabling the display panel to achieve efficient utilization of light in both transmission and reflection modes.

[0039] Specifically, with Figure 3Taking the display panel in the middle as an example, refer to Figure 9 When the display panel is in transmissive mode, incident light is provided from the side of the first substrate 110 away from the third substrate 130 via the backlight 800 (the direction of the incident light is as follows). Figure 9 (As indicated by the middle arrow), the light-emitting side is the side of the third substrate 130 away from the first substrate 110. The second liquid crystal layer 420 is electrically controlled by the first transparent electrode layer 510 and the second transparent electrode layer 520, causing the second liquid crystal layer to be in a light-shielding state. In this state, the second liquid crystal layer 420 acts as a black matrix (BM), absorbing incident light located between adjacent color resist blocks, thereby improving the contrast of the display panel. When the display panel is in reflective mode, refer to... Figure 10 Incident light is provided by the external environment and enters from the side of the third substrate 130 away from the first substrate 110 (the direction of the incident light is as follows). Figure 10 (In the direction indicated by the middle arrow), the light-emitting side and the light-incident side are on the same side. The second liquid crystal layer 420 is electrically controlled by the first transparent electrode layer 510 and the second transparent electrode layer 520, so that the second liquid crystal layer is in a light-transmitting state. At this time, the second liquid crystal layer will not absorb the incident light, which is conducive to the incident light being reflected from the inside of the display panel and then refracted again, increasing the utilization rate of the reflected light and further improving the utilization rate of the incident light.

[0040] In summary, the display panel of this application achieves high efficiency in light utilization in both transmission and reflection modes, and improves the aperture ratio in reflection mode. In addition, by replacing the conventional black matrix structure with a second liquid crystal layer, this application effectively solves the problem of image retention caused by contamination of the first liquid crystal layer by color filter impurity ions in the color filter substrate in the transmission mode.

[0041] In the description of this application, "first feature" and "second feature" may include one or more of the features.

[0042] In the description of this application, "multiple" means two or more.

[0043] According to some embodiments of this application, the type of the second liquid crystal is not particularly limited. For example, the second liquid crystal may include positive liquid crystal or negative liquid crystal. Under the action of an electric field, the long axis of the liquid crystal molecules in a positive liquid crystal is parallel to the electric field, while the long axis of the liquid crystal in a negative liquid crystal is perpendicular to the electric field. When the second liquid crystal is a positive liquid crystal, the second liquid crystal layer is in TN (Twisted Nematic) display mode, and the display panel has advantages such as fast liquid crystal molecule deflection speed and short screen response time. When the second liquid crystal is a negative liquid crystal, the second liquid crystal layer is in VA (Vertical Alignment) display mode, and the display panel has advantages such as wide viewing angle and high contrast.

[0044] According to some embodiments of this application, the type of the first liquid crystal layer 410 is not particularly limited, see reference. Figure 3 and Figure 4 For example, when the first liquid crystal layer is controlled by the pixel electrode layer 300, the first liquid crystal layer can be in ADS or ADSPro (Advanced Super Dimension Switch) display mode. The display panel has advantages such as high resolution, high transmittance, low power consumption, wide viewing angle, high aperture ratio, low color difference, and no pushMura.

[0045] According to some embodiments of this application, the structure of the display panel is not particularly limited, for example, referring to Figure 1 and Figure 2 The display panel may further include a third transparent electrode layer 530, which is located on the side of the second substrate 120 facing the first liquid crystal layer 410. In this case, the first liquid crystal layer is controlled through the third transparent electrode layer 530 and the pixel electrode layer 300. According to other embodiments of this application, when the first liquid crystal layer is controlled through the third transparent electrode layer 530 and the pixel electrode layer 300, the type of the first liquid crystal is not particularly limited. For example, the first liquid crystal may include positive liquid crystal or negative liquid crystal. Under the action of an electric field, the long axis of the liquid crystal molecules in a positive liquid crystal is parallel to the electric field, while the long axis of the negative liquid crystal is perpendicular to the electric field. When the first liquid crystal is a positive liquid crystal, the first liquid crystal layer is in a TN (Twisted Nematic) display mode, and the display panel has advantages such as fast liquid crystal molecule deflection speed and short screen response time. When the first liquid crystal is a negative liquid crystal, the first liquid crystal layer is in a VA (Vertical Alignment) display mode, and the display panel has advantages such as a large viewing angle and high contrast.

[0046] According to some embodiments of this application, the structure of the sub-color blocking block is not particularly limited, for example, referring to Figure 1 and Figure 3The surface area of ​​the sub-color resist block 610 near the first transparent electrode layer 510 can be no greater than the surface area of ​​the sub-color resist block 610 near the second transparent electrode layer 520. Preferably, the surface area of ​​the sub-color resist block 610 near the first transparent electrode layer 510 can be smaller than the surface area of ​​the sub-color resist block 610 near the second transparent electrode layer 520, thereby further increasing the color display area of ​​the display panel, thus making the display panel have a richer and more colorful display effect.

[0047] According to some embodiments of this application, the type of sub-color block is not particularly limited. For example, the sub-color block may include at least one of red sub-color block, blue sub-color block and green sub-color block.

[0048] According to some embodiments of this application, when the display panel is in transmissive mode, the structure of the display panel is not particularly limited, for example, referring to... Figure 5 and Figure 9 The display panel may further include a backlight 800, which is located on the side of the first substrate 110 away from the third substrate 130. The backlight 800 provides incident light to the display panel. The incident light enters from the side of the first substrate 110 away from the third substrate 130. By setting the backlight, the display panel can achieve a transmissive display effect.

[0049] According to some embodiments of this application, when the display panel is in transmissive mode, the structure of the display panel is not particularly limited, for example, referring to... Figure 7 and Figure 11 The display panel may further include a backlight 800, which is located on the side of the third substrate 130 away from the first substrate 110. The backlight 800 provides incident light to the display panel, with the incident light entering from the side of the third substrate away from the first substrate and the outgoing light exiting from the side of the first substrate away from the third substrate. By setting the backlight, the display panel can achieve a transmissive display effect.

[0050] According to some embodiments of this application, when the display panel is in reflective mode, for example, referring to... Figure 8 At this time, the first transparent electrode layer 510 and the third transparent electrode layer 530 located on both sides of the second substrate 120 can function as transparent reflective layers, thereby achieving the effect of transparent reflective layers. Figure 8 The ambient light incident in the direction of the middle arrow is reflected, thus enabling the display panel to achieve a reflective display effect; for example, refer to Figure 12 At this time, the first transparent electrode layer 510 located on the side of the second substrate 120 near the second liquid crystal layer 420 can function as a transparent reflective layer, thereby reflecting the light emitted by the liquid crystal layer. Figure 12 The ambient light, as indicated by the middle arrow, is reflected, thus enabling the display panel to achieve a reflective display effect.

[0051] According to some embodiments of this application, when the display panel is in reflective mode, the structure of the display panel is not particularly limited, for example, referring to... Figure 6 and Figure 10 The display panel further includes a transparent reflective layer 700, which is located between the thin-film transistor layer 200 and the first substrate 100. Thus, the transparent reflective layer 700 can be used for... Figure 6 or Figure 10 The ambient light, as indicated by the middle arrow, is reflected, thus enabling the display panel to achieve a reflective display effect.

[0052] According to some embodiments of this application, the type of liquid crystal in the first liquid crystal layer is not particularly limited. For example, when the first liquid crystal layer is in ADS or ADSpro display mode, the liquid crystal in the first liquid crystal layer may include at least one of positive liquid crystal, negative liquid crystal, and hybrid liquid crystal; when the first liquid crystal layer is in TN display mode, the liquid crystal in the first liquid crystal layer may include at least one of negative liquid crystal and hybrid liquid crystal; when the second liquid crystal layer is in VA display mode, the liquid crystal in the first liquid crystal layer may include negative liquid crystal.

[0053] According to some embodiments of this application, the type of the second liquid crystal is not particularly limited. For example, when the second liquid crystal layer is in TN display mode, the second liquid crystal may include at least one of negative liquid crystal and hybrid liquid crystal; when the second liquid crystal layer is in VA display mode, the second liquid crystal may include at least one of negative liquid crystal and hybrid liquid crystal.

[0054] According to some embodiments of this application, the type of substrate is not particularly limited. For example, the first substrate, the second substrate, and the third substrate may each independently include at least one of glass substrate, polyester resin (PET), and plastic film (CPI).

[0055] According to some embodiments of this application, the material of the transparent electrode layer is not particularly limited. For example, the first transparent electrode layer, the second transparent electrode layer, and the third transparent electrode layer may each independently include at least one of indium tin oxide (ITO), silver nanowires (AgNWs), and zinc oxide (ZnO).

[0056] According to some embodiments of this application, the material of the transparent reflective layer is not particularly limited. For example, the transparent reflective layer may include at least one of indium tin oxide (ITO), silver nanowires (AgNWs), and zinc oxide (ZnO).

[0057] In another aspect of this application, a method for controlling the aforementioned display panel is proposed, comprising: controlling the deflection of the second liquid crystal in the second liquid crystal layer 420 by controlling the input voltages of the first transparent electrode layer 510 and the second transparent electrode layer 520 respectively. Thus, by controlling the electric field of the second liquid crystal layer, the deflection of the second liquid crystal can be controlled, ultimately achieving the switching between a light-blocking state and a light-transmitting state of the second liquid crystal layer, realizing a dynamic "black matrix" effect.

[0058] According to some embodiments of this application, reference is made to Figure 5 and Figure 9 When the backlight 800 is located on the side of the first substrate 110 away from the third substrate 130 and the second liquid crystal layer 420 is in a light-shielding state, preferably, the display panel is a transmissive display panel, the light-incident side of the display panel is the side of the first substrate 110 away from the third substrate 130, and the light-emitting side of the display panel is the side of the third substrate 130 away from the first substrate 110.

[0059] According to other embodiments of this application, reference is made to Figure 6 and Figure 10 When the backlight is 800 ( Figure 6 and Figure 10 When the second liquid crystal layer (not shown) is located on the side of the first substrate 110 away from the third substrate 130, and the second liquid crystal layer is in a light-transmitting state, preferably, the display panel is a reflective display panel, and both the light-incident side and the light-exit side of the display panel are on the side of the third substrate 130 away from the first substrate 110. Therefore, by controlling the light-transmitting state of the second liquid crystal layer, the display mode of the display panel can be flexibly switched.

[0060] According to some embodiments of this application, reference is made to Figure 7 and Figure 11 When the backlight 800 is located on the side of the third substrate 130 away from the first substrate 110, and the second liquid crystal layer 420 is in a light-shielding state, preferably, the display panel is a transmissive display panel or a reflective display panel. When the display panel is a transmissive display panel, the light-incident side of the display panel is the side of the third substrate 130 away from the first substrate 110, and the light-emitting side is the side of the first substrate 110 away from the third substrate 130. When the display panel is a reflective display panel, both the light-incident side and the light-emitting side of the display panel are the side of the first substrate 110 away from the third substrate 130.

[0061] According to some embodiments of this application, reference is made to Figure 8 and Figure 12 When the backlight is 800 ( Figure 8 and Figure 12When the second liquid crystal layer (not shown) is located on the side of the third substrate 130 away from the first substrate 110 and is in a light-transmitting state, preferably, the display panel is a reflective display panel. Both the light-incident side and the light-exit side of the display panel are on the side of the first substrate 110 away from the third substrate 130. Therefore, by controlling the light-transmitting state of the second liquid crystal layer, flexible switching of the display panel's display mode can be achieved.

[0062] In another aspect of this application, a display device is provided, including the aforementioned display panel. Thus, this display device possesses all the features and advantages of the aforementioned display panel, which will not be repeated here.

[0063] The following specific embodiments illustrate the solution of this application. It should be noted that these embodiments are for illustrative purposes only and should not be considered as limiting the scope of this application. Where specific techniques or conditions are not specified in the embodiments, they are performed according to the techniques or conditions described in the literature in this field or according to the product instructions. Reagents or instruments whose manufacturers are not specified are all conventional products that can be obtained commercially.

[0064] Example 1:

[0065] 1) A transparent reflective layer (ITO), a thin-film transistor layer (including a gate and a gate insulating layer (SiN)) are gradually formed on a first substrate (glass substrate) through thin film deposition, photoresist coating, exposure, development, etching, and lift-off processes. x / SiO x Semiconductor layer (a-Si / IGZO), Ohmic contact layer (N) + a-Si), source / drain (S / D), passivation layer (SiN) x The pixel electrode layer (ITO) structure is referred to as the array substrate.

[0066] 2) A second transparent electrode layer (ITO film layer) is formed on the third substrate (glass substrate) by sputtering process, and red sub-color block (R), green sub-color block (G) and blue sub-color block (B) structures are gradually formed by coating, exposure, development and baking processes, respectively, which is referred to as color filter substrate.

[0067] 3) A full-surface ITO film layer is formed on both sides of the second substrate (glass substrate) by sputtering process, which serves as the ITO common electrode. The film layer on the side closer to the first substrate is the third transparent electrode layer, and the film layer on the side closer to the third substrate is the first transparent electrode layer, denoted as the common substrate.

[0068] 4) Based on the above, the array substrate and the common substrate are aligned through liquid crystal injection and encapsulation processes to form the first liquid crystal layer. Then, the color filter substrate and the common substrate are aligned through liquid crystal injection and encapsulation processes to form the second liquid crystal layer, and finally a multilayer semi-transparent and semi-reflective display panel is formed.

[0069] The structure of the display panel prepared in Example 1 is shown below. Figure 1 By selecting different types of liquid crystal materials, the first liquid crystal layer 410 in Example 1 can be in TN or VA display mode, and the second liquid crystal layer 420 can be in TN or VA display mode; in transmission mode, reference... Figure 5 By applying a driving voltage to the second liquid crystal layer 420 to control its rotation, the incident light emitted from the backlight 800 cannot be refracted through the second liquid crystal layer 420. The second liquid crystal layer 420 acts as a black matrix to block light, thereby improving display contrast. In this mode, the transmission mode is full-color transmission; in the reflection mode, the reference... Figure 6 By applying a driving voltage to the second liquid crystal layer 420 to control the rotation of the second liquid crystal, the incident light from the external environment can be refracted out, increasing the utilization rate of reflected light. At this time, the reflection mode is full-color reflection.

[0070] Example 2:

[0071] Example 2 is the same as Example 1, except that, see [link to example]. Figure 2 Based on Example 1, the second liquid crystal layer is placed closer to the backlight, and the first liquid crystal layer is placed further away from the backlight. The array substrate 110 of the first liquid crystal layer does not have a transparent reflective layer 700.

[0072] The structure of the display panel prepared in Example 2 is shown below. Figure 2 By selecting different types of liquid crystal materials, the first liquid crystal layer 410 in Example 2 can be in TN or VA display mode, and the second liquid crystal layer 420 can be in TN or VA display mode; in transmission mode, reference... Figure 7 By applying a driving voltage to the second liquid crystal layer 420 to control its rotation, the incident light emitted from the backlight 800 cannot be refracted through the second liquid crystal layer 420. The second liquid crystal layer 420 acts as a black matrix to block light, thereby improving display contrast. In this mode, the transmission mode is full-color transmission; in the reflection mode, the reference... Figure 8The first transparent electrode layer 510 (ITO layer) and the third transparent electrode layer 530 (ITO layer) on the common substrate 120 can both act as transparent reflective layers, allowing incident light from the external environment to be refracted and increasing the utilization rate of reflected light. The difference from Embodiment 1 is that the reflection mode under this structure is non-full-color reflection. Compared with full-color reflection, non-full-color reflection has a higher light utilization rate and is more energy-efficient.

[0073] Example 3:

[0074] Example 3 is consistent with Example 1, except that a first transparent electrode layer (ITO film layer) is formed on only one side surface of the second substrate by sputtering process, which serves as the ITOCom electrode and is referred to as the common substrate.

[0075] Based on the above, the array substrate and the common substrate are placed face to face on the side surface without the ITO film layer. The cell assembly process is carried out through liquid crystal injection and sealing glue to form the first liquid crystal layer. Then, the color filter substrate and the common substrate with the ITO film layer are placed face to face through liquid crystal injection and sealing glue to form the second liquid crystal layer. Finally, a stacked semi-transparent and semi-reflective display panel is formed.

[0076] The structure of the display panel prepared in Example 3 is shown in the figure. Figure 3 The first transparent electrode layer 510 is located on the side of the common substrate 120 closer to the color filter substrate 130, and the first transparent electrode layer 510 is away from the array substrate 110. By selecting different types of liquid crystal materials, the first liquid crystal layer can be an ADS or ADSPro display mode, and the second liquid crystal layer can be a TN or VA display; in transmissive mode, the reference... Figure 9 By applying a driving voltage to the second liquid crystal layer 420 to control its rotation, the incident light emitted from the backlight 800 cannot be refracted through the second liquid crystal layer 420. The second liquid crystal layer 420 acts as a black matrix to block light, thereby improving display contrast. In this mode, the transmission mode is full-color transmission; in the reflection mode, the reference... Figure 10 By applying a driving voltage to the second liquid crystal layer 420 to control the rotation of the second liquid crystal, the incident light from the external environment can be refracted out, increasing the utilization rate of reflected light. At this time, the reflection mode is full-color reflection.

[0077] Example 4:

[0078] Example 4 is consistent with Example 3, except that, see [link to example]. Figure 4 Based on Example 3, the second liquid crystal layer is placed closer to the backlight, and the first liquid crystal layer is placed further away from the backlight. The array substrate 110 of the first liquid crystal layer does not have a transparent reflective layer 700.

[0079] The structure of the display panel prepared in Example 4 is shown in the figure. Figure 4 By selecting different types of liquid crystal materials, the first liquid crystal layer in Example 4 can be in ADS or ADSPro display mode, and the second liquid crystal layer 420 can be in TN or VA display mode; in transmission mode, reference... Figure 11 By applying a driving voltage to the second liquid crystal layer 420 to control its rotation, the incident light emitted from the backlight 800 cannot be refracted through the second liquid crystal layer 420. The second liquid crystal layer 420 acts as a black matrix to block light, thereby improving the display contrast. In this mode, the transmission mode is full-color transmission; in the reflection mode, the reference... Figure 12 The first transparent electrode layer 510 (ITO layer) of the common substrate 120 can act as a transparent reflective layer, allowing incident light from the external environment to be refracted out, increasing the utilization rate of reflected light. The difference from Embodiment 3 is that the reflection mode under this structure is non-full-color reflection. Compared with full-color reflection, non-full-color reflection has a higher light utilization rate and is more energy-efficient.

[0080] In the description of this application, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or the first and second features being in contact through another feature between them.

[0081] In the description of this application, the terms "above," "over," and "on top" for the first feature and the second feature include the first feature being directly above or diagonally above the second feature, or simply indicate that the first feature is at a higher horizontal level than the second feature.

[0082] In the description of this application, "A and / or B" can include any of the cases of A alone, B alone, or A and B, where A and B are merely examples and can be any technical feature connected by "and / or" in this application.

[0083] Unless otherwise stated, all technical terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains. All patents and publications referenced in this application are incorporated herein by reference in their entirety. The terms "comprising" or "including" are open-ended expressions, meaning they include the contents specified in this application but do not exclude other contents.

[0084] In the description of this specification, references to terms such as "one embodiment," "another embodiment," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment is included in at least one embodiment of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples, without contradiction. Additionally, it should be noted that in this specification, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features.

[0085] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A display panel, characterized in that, include: First substrate; A thin-film transistor layer, wherein the thin-film transistor layer is located on one side of the first substrate; A pixel electrode layer, wherein the pixel electrode layer is located on the side of the thin-film transistor layer away from the first substrate; A first liquid crystal layer is located on the side of the pixel electrode layer away from the thin film transistor layer; The second substrate is located on the side of the first liquid crystal layer away from the pixel electrode layer; A first transparent electrode layer is located on the side of the second substrate away from the first liquid crystal layer; The first transparent electrode layer comprises a color resist layer and a second liquid crystal layer, wherein the color resist layer and the second liquid crystal layer are disposed in the same layer, the color resist layer includes a plurality of spaced sub-color resist blocks, and the second liquid crystal layer includes a second liquid crystal, the second liquid crystal being located between adjacent sub-color resist blocks, and the color resist layer being located on the side of the first transparent electrode layer away from the second substrate. A second transparent electrode layer is located on the side of the color resist layer away from the first transparent electrode layer; A third substrate is located on the side of the second transparent electrode layer away from the color resist layer; The display panel further includes a backlight source located on the side of the third substrate away from the first substrate. The backlight source provides incident light to the display panel, and the incident light enters from the side of the third substrate away from the first substrate. The display panel further includes: a third transparent electrode layer, the third transparent electrode layer being located on the side of the second substrate facing the first liquid crystal layer; When the second liquid crystal layer is in a light-blocking state, the display panel is a transmissive display panel; when the second liquid crystal layer is in a light-transmitting state, the display panel is a reflective display panel.

2. The display panel according to claim 1, characterized in that, The surface area of ​​the sub-color block near the first transparent electrode layer is not greater than the surface area of ​​the sub-color block near the second transparent electrode layer.

3. A method for controlling the display panel according to any one of claims 1-2, characterized in that, include: The deflection of the second liquid crystal in the second liquid crystal layer is controlled by controlling the input voltages of the first transparent electrode layer and the second transparent electrode layer respectively.

4. A display device, characterized in that, The display panel includes any one of claims 1-2.

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