Display panel and electronic equipment

Abstract

The present application provides a display panel and an electronic device. The display panel includes a display unit, a first color-changing layer, and a second color-changing layer. The display unit has a screen-on state and a screen-off state. The first color-changing layer can absorb light and change color. The second color-changing layer has a light-transmitting state and a shielding state. When the display unit is in the screen-off state, the second color-changing layer is in a light-transmitting state, and the first color-changing layer absorbs light from the outside and changes color; when the display unit is in the screen-on state, the second color-changing layer is in a shielding state. The present application arranges the first color-changing layer and the second color-changing layer on the display unit, so that not only the first color-changing layer absorbs the external ambient light and changes color in the screen-off state to decorate the display panel and improve the appearance performance of the display panel, but also the second color-changing layer blocks the first color-changing layer in the screen-on state to avoid affecting the display effect of the display unit. Such an arrangement can omit the arrangement of the semi-transparent and semi-reflective decorative plate in the related art and reduce the power consumption of the display panel.

Description

Technical Field

[0001] The present application belongs to the technical field of display panels, and specifically relates to display panels and electronic devices. Background Art

[0002] With the rapid development of display technology, the demand for display panels is not only limited to excellent optical performance, but also includes overall aesthetic design. At present, the display panel is black when the screen is off, which cannot match the environment well. In the related art, the display unit and the decorative panel are mainly coordinated by directly adding a translucent and semi-reflective decorative panel on the display unit. However, the translucent and semi-reflective decorative panel will cause the brightness of the display unit to decrease. In order to achieve the same brightness, the power consumption of the display panel needs to be increased, and the display unit and the decorative panel set in this way have poor integration matching effect. Summary of the invention

[0003] In view of this, a first aspect of the present application provides a display panel, the display panel comprising:

[0004] A display unit having a display surface, wherein the display unit has a screen-on state and a screen-off state;

[0005] A first color-changing layer, disposed on one side of the display surface, the first color-changing layer being capable of absorbing light and changing color; and

[0006] A second color-changing layer is provided on a side of the first color-changing layer away from the display surface; the second color-changing layer has a light-transmitting state capable of allowing light to pass through, and a shielding state capable of shielding the first color-changing layer;

[0007] Among them, when the display unit is in the screen-off state, the second color-changing layer is in the light-transmitting state, and the first color-changing layer absorbs light from the outside and changes color; when the display unit is in the screen-on state, the second color-changing layer is in the shielding state.

[0008] The display panel provided in the first aspect of the present application includes a display unit, a first color-changing layer, and a second color-changing layer. Specifically, when the display unit is in the screen-off state, the second color-changing layer is in a light-transmitting state, which can also be understood as the second color-changing layer being transparent, and the external ambient light can penetrate the second color-changing layer to the first color-changing layer, and the first color-changing layer can absorb the ambient light and change color, so that the display panel displays a preset decorative pattern, and the decorative pattern is formed by the color change of the first color-changing layer. When the display unit is in the screen-on state, the second color-changing layer is in a shielding state, which can also be understood as the second color-changing layer having a color to shield the first color-changing layer, which can avoid the color interference of the first color-changing layer and not affect the display effect of the display unit, and can also avoid the ambient light from reaching the first color-changing layer.

[0009] Therefore, the present application sets a first color-changing layer and a second color-changing layer on the display unit, so that not only the first color-changing layer absorbs external ambient light to change color when the screen is off, so as to decorate the display panel and improve the appearance performance of the display panel, but also the second color-changing layer blocks the first color-changing layer when the screen is on, so as to avoid affecting the display effect of the display unit. In addition, such a setting can omit the setting of the semi-transparent and semi-reflective decorative plate in the related art, and reduce the power consumption of the display panel.

[0010] The display unit has a display area and a non-display area arranged at the periphery of the display area, the display area corresponds to the light-emitting unit of the display unit, and the first color-changing layer and the second color-changing layer are both located in the non-display area.

[0011] The orthographic projection of the second color-changing layer on the display unit covers the orthographic projection of the first color-changing layer on the display unit.

[0012] There is a boundary between the display area and the non-display area, and there is a gap between the boundary and the surface of the first color-changing layer close to the display area.

[0013] The display panel further comprises a reflective layer disposed on a side of the first color-changing layer close to the display area, and the reflective layer is used to reflect light emitted from the light-emitting unit located in the display area to the first color-changing layer.

[0014] Wherein, along the arrangement direction from the display unit to the second color-changing layer, the width of the reflective layer gradually increases.

[0015] Wherein, the first color-changing layer is made of photochromic material, and the second color-changing layer is made of electrochromic material.

[0016] Among them, the display panel also includes a circuit board, a conductive layer electrically connected to the circuit board, and a light-transmitting insulating layer covering the second color-changing layer, the first color-changing layer, and at least part of the conductive layer. The conductive layer also penetrates the light-transmitting insulating layer and is electrically connected to the second color-changing layer. The circuit board is used to control the second color-changing layer to switch between the light-transmitting state and the shielding state.

[0017] Among them, the first color-changing layer includes a plurality of first color-changing parts arranged at intervals along an arrangement direction perpendicular to the display unit to the second color-changing layer, and the second color-changing layer includes a plurality of second color-changing parts arranged at intervals along an arrangement direction perpendicular to the display unit to the second color-changing layer, and one second color-changing part corresponds to one first color-changing part.

[0018] A second aspect of the present application provides an electronic device, comprising a housing, and a display panel as provided in the first aspect of the present application, wherein the display panel is mounted on the housing.

[0019] The electronic device provided in the second aspect of the present application adopts the display panel provided in the first aspect of the present application, and by setting a first color-changing layer and a second color-changing layer on the display unit, not only the first color-changing layer absorbs external ambient light to change color when the screen is off, so as to decorate the display panel and improve the appearance performance of the display panel, but also the second color-changing layer blocks the first color-changing layer when the screen is on, so as to avoid affecting the display effect of the display unit. In addition, such a setting can omit the setting of the semi-transparent and semi-reflective decorative plate in the related art, and reduce the power consumption of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the implementation modes of the present application, the drawings required for use in the implementation modes of the present application will be described below.

[0021] Figure 1 A schematic diagram of the structure of a display panel provided in one embodiment of the present application Figure 1 .

[0022] Figure 2 A schematic diagram of the structure of a display panel provided in one embodiment of the present application Figure 2 .

[0023] Figure 3 A schematic diagram of the structure of a display panel provided in one embodiment of the present application Figure 3 .

[0024] Figure 4 A schematic diagram of the structure of a display panel provided in one embodiment of the present application Figure 4 .

[0025] Figure 5 A schematic diagram of the structure of a display panel provided in one embodiment of the present application Figure 5 .

[0026] Figure 6 A schematic diagram of the structure of a display panel provided in one embodiment of the present application Figure 6 .

[0027] Figure 7 A schematic diagram of the structure of a display panel provided in one embodiment of the present application Figure 7 .

[0028] Figure 8 A schematic diagram of the structure of a display panel provided in one embodiment of the present application Figure 8 .

[0029] Fig. 9 A schematic diagram of the structure of a display panel provided in one embodiment of the present application Figure 9 .

[0030] Fig.10A schematic diagram of a process for preparing a display panel provided in one embodiment of the present application.

[0031] Fig.11 A process diagram of a method for preparing a display panel provided in one embodiment of the present application Figure 1 .

[0032] Fig.12 A process diagram of a method for preparing a display panel provided in one embodiment of the present application Figure 2 .

[0033] Fig.13 A process diagram of a method for preparing a display panel provided in one embodiment of the present application Figure 3 .

[0034] Fig.14 A process diagram of a method for preparing a display panel provided in one embodiment of the present application Figure 4 .

[0035] Fig.15 A process diagram of a method for preparing a display panel provided in one embodiment of the present application Figure 5 .

[0036] Fig.16 A process diagram of a method for preparing a display panel provided in one embodiment of the present application Figure 6 .

[0037] Explanation of reference numerals: display panel-1, display unit-11, display area-11a, non-display area-11b, display surface-111, light-emitting unit-112, first color-changing layer-12, first color-changing portion-121, second color-changing layer-13, second color-changing portion-131, reflective layer-14, circuit board-15, conductive layer-16, control line-161, light-transmitting insulating layer-17. DETAILED DESCRIPTION

[0038] The following are preferred implementations of the present application. It should be noted that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application, and these improvements and modifications are also considered to be within the scope of protection of the present application.

[0039] Unless otherwise specified or there is a contradiction, the terms and phrases used in this application have the following meanings:

[0040] In this application, "first", "second", etc. are used only for descriptive purposes and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features.

[0041] In this application, "one or several" refers to any one, any two or more of the listed items. Among them, "several" refers to any two or more of the listed items.

[0042] In the present application, it is necessary to understand that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0043] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be connected, detachably connected, or integrated. It can be mechanically connected or electrically connected. It can be directly connected or indirectly connected through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0044] Please refer to Figure 1-Figure 4 , Figure 1 A schematic diagram of the structure of a display panel provided in one embodiment of the present application Figure 1 . Figure 2 A schematic diagram of the structure of a display panel provided in one embodiment of the present application Figure 2 . Figure 3 A schematic diagram of the structure of a display panel provided in one embodiment of the present application Figure 3 . Figure 4 A schematic diagram of the structure of a display panel provided in one embodiment of the present application Figure 4 .

[0045] The present embodiment provides a display panel 1, which includes a display unit 11, a first color-changing layer 12, and a second color-changing layer 13. The display unit 11 has a display surface 111, and the display unit 11 has a screen-on state and a screen-off state. The first color-changing layer 12 is provided on one side of the display surface 111, and the first color-changing layer 12 can absorb light and change color. The second color-changing layer 13 is provided on the side of the first color-changing layer 12 away from the display surface 111; the second color-changing layer 13 has a light-transmitting state that can allow light to pass through, and a shielding state that can shield the first color-changing layer 12.

[0046] Among them, when the display unit 11 is in the screen-off state, the second color-changing layer 13 is in the light-transmitting state, and the first color-changing layer 12 absorbs light from the outside and changes color; when the display unit 11 is in the screen-on state, the second color-changing layer 13 is in the shielding state.

[0047] The embodiment provided may be a liquid crystal display (LCD) panel, or an organic light-emitting diode (OLED) panel.

[0048] The display panel 1 provided in this embodiment includes a display unit 11, which is used to emit light to transmit information such as numbers and pictures. The display unit 11 has a display surface 111, and the light of the display unit 11 can be emitted to the outside through the display surface 111. The display unit 11 has a screen-on state and a screen-off state. When the display unit 11 is in the screen-on state, the display surface 111 of the display unit 11 emits light. When the display unit 11 is in the screen-off state, the display surface 111 of the display unit 11 stops emitting light.

[0049] The display panel 1 provided in this embodiment also includes a first color-changing layer 12. Optionally, the first color-changing layer 12 is made of a photochromic material, that is, the material of the first color-changing layer 12 is a photochromic material. The first color-changing layer 12 can absorb light and change color. The light can be ambient light from the outside, or it can be light from the light-emitting unit 112 of the display unit 11. The first color-changing layer 12 after color development has a color, forming a decorative pattern to decorate the display panel 1. According to the requirements of the decorative pattern, the first color-changing layer 12 may include one or more photochromic materials.

[0050] The display panel 1 provided in this embodiment also includes a second color-changing layer 13. Optionally, the second color-changing layer 13 is made of an electrochromic material, that is, the material of the second color-changing layer 13 is an electrochromic material. The second color-changing layer 13 has a light-transmitting state and a shielding state. The second color-changing layer 13 in the light-transmitting state is transparent and allows light to pass through. The second color-changing layer 13 in the shielding state has a color and can shield the first color-changing layer 12. For example, when the second color-changing layer 13 is in the shielding state, the second color-changing layer 13 is black. The second color-changing layer 13 may include an electrochromic material.

[0051] Optionally, the display panel 1 further includes a circuit board 15 electrically connected to the second color-changing layer 13, and the circuit board 15 is used to control the second color-changing layer 13. When the second color-changing layer 13 is in a power-off state, the second color-changing layer 13 has a light-transmitting state that allows light to pass through. When the second color-changing layer 13 is in a power-on state, the second color-changing layer 13 has a shielding state that shields the first color-changing layer 12.

[0052] The display unit 11, the first color-changing layer 12, and the second color-changing layer 13 are stacked in sequence. Specifically, when the display unit 11 is in the off-screen state, the second color-changing layer 13 is in a light-transmitting state, which can also be understood as the second color-changing layer 13 is transparent, and the external ambient light can penetrate the second color-changing layer 13 to the first color-changing layer 12, and the first color-changing layer 12 can absorb the ambient light and change color, so that the display panel 1 displays a preset decorative pattern, and the decorative pattern is formed by the color change of the first color-changing layer 12. When the display unit 11 is in the bright screen state, the second color-changing layer 13 is in a shielding state, which can also be understood as the second color-changing layer 13 has a color to shield the first color-changing layer 12, which can avoid the color interference of the first color-changing layer 12 and does not affect the display effect of the display unit 11, and can also avoid the ambient light from reaching the first color-changing layer 12.

[0053] Therefore, in this embodiment, by arranging the first color-changing layer 12 and the second color-changing layer 13 on the display unit 11, not only the first color-changing layer 12 absorbs the external ambient light to change color when the screen is off, so as to decorate the display panel 1 and improve the appearance performance of the display panel 1, but also the second color-changing layer 13 blocks the first color-changing layer 12 when the screen is on, so as to avoid affecting the display effect of the display unit 11. Moreover, such an arrangement can omit the arrangement of the semi-transparent and semi-reflective decorative plate in the related art, and reduce the power consumption of the display panel 1.

[0054] Please refer to Figure 2-Figure 4 In one embodiment, the display unit 11 has a display area 11a and a non-display area 11b arranged at the periphery of the display area 11a, the display area 11a corresponds to the light-emitting unit 112 of the display unit 11, and the first color-changing layer 12 and the second color-changing layer 13 are both located in the non-display area 11b.

[0055] The display unit 11 provided in this embodiment has a display area 11a and a non-display area 11b. The display area 11a corresponds to the light emitting unit 112 and can be used to display images, texts, etc. The non-display area 11b is arranged outside the display area 11a.

[0056] For example, in an LCD, the display area 11a corresponds to the light emitting unit 112, the display area 11a also corresponds to the color resist layer, and the non-display area 11b corresponds to the light shielding layer, wherein the light shielding layer is disposed between two adjacent color resist layers.

[0057] For another example, in Micro LED, the display area 11a corresponds to the light emitting unit 112, and the non-display area 11b corresponds to the light blocking wall. The light blocking wall is provided between two adjacent light emitting units 112 to limit the light emission angle of the light emitting unit 112.

[0058] For another example, in an OLED, the display area 11 a corresponds to the light emitting unit 112 , and the non-display area 11 b corresponds to the isolation column, wherein the isolation column is disposed between two adjacent light emitting units 112 to isolate the light emitting units 112 .

[0059] Alternatively, if Figure 2 As shown, the first color-changing layer 12 is disposed between two adjacent light-emitting units 112 , and the second color-changing layer 13 is disposed between two adjacent light-emitting units 112 .

[0060] Alternatively, if Figure 3 As shown, the first color-changing layer 12 is a ring-shaped structure, and the second color-changing layer 13 is a ring-shaped structure. The first color-changing layer 12 is arranged around the light-emitting unit 112, and the second color-changing layer 13 is arranged around the light-emitting unit 112.

[0061] Alternatively, if Figure 4 As shown, a plurality of first color-changing layers 12 are arranged around the display area 11 a along the circumferential direction of the display unit 11 , and a plurality of second color-changing layers 13 are arranged around the display area 11 a along the circumferential direction of the display unit 11 .

[0062] In this embodiment, by limiting the first color-changing layer 12 and the second color-changing layer 13 to be arranged in the non-display area 11b, it not only avoids the first color-changing layer 12 and the second color-changing layer 13 from blocking the light-emitting unit 112 located in the display area 11a, reduces the power consumption of the display panel 1, and avoids affecting the display effect of the display unit 11, but also reduces the color interference caused by the first color-changing layer 12 absorbing the light of the self-luminous reaction, reduces the probability of mutual interference between the first color-changing layer 12 and the light-emitting unit 112, and improves the display effect of the display panel 1.

[0063] Please refer to Figure 3 and Figure 5 , Figure 5 A schematic diagram of the structure of a display panel provided in one embodiment of the present application Figure 5 In one embodiment, the orthographic projection of the second color-changing layer 13 on the display unit 11 covers the orthographic projection of the first color-changing layer 12 on the display unit 11 .

[0064] For example, the orthographic projection of the second color-changing layer 13 on the display unit 11 coincides with the orthographic projection of the first color-changing layer 12 on the display unit 11. For another example, the orthographic projection of the first color-changing layer 12 on the display unit 11 is located within the orthographic projection of the second color-changing layer 13 on the display unit 11. Optionally, along the arrangement direction perpendicular to the display unit 11 to the second color-changing layer 13 (such as Figure 5 (as shown in the direction D in the middle), the width of the second color-changing layer 13 is greater than or equal to the width of the first color-changing layer 12.

[0065] In this embodiment, the orthographic projection relationship between the second color-changing layer 13 and the first color-changing layer 12 on the display unit 11 is limited, so that the second color-changing layer 13 can completely cover the first color-changing layer 12 when in the shielding state. In addition, when the width of the second color-changing layer 13 is limited to be greater than the width of the first color-changing layer 12, when the second color-changing layer 13 is provided on the first color-changing layer 12, a space for allowing operation error is reserved, thereby reducing the difficulty of operation.

[0066] Please refer to Figure 6 , Figure 6 A schematic diagram of the structure of a display panel provided in one embodiment of the present application Figure 6 In one embodiment, the second color-changing layer 13 also covers the surface of the first color-changing layer 12 close to the display area 11 a.

[0067] The second color-changing layer 13 covers the surface of the first color-changing layer 12 away from the display surface 111, and also covers the surface of the first color-changing layer 12 close to the display surface 111. For example, the second color-changing layer 13 covers the side of the first color-changing layer 12 close to the display surface 111. For another example, the peripheral side surface of the first color-changing layer 12 is bent and connected to the surface of the first color-changing layer 12 away from the display surface 111, and the second color-changing layer 13 covers the entire peripheral side surface of the first color-changing layer 12.

[0068] Since the first color-changing layer 12 can absorb light and change color, the first color-changing layer 12 can absorb the light from the light-emitting unit 112 of the display area 11a and change color, resulting in the first color-changing layer 12 causing color interference to the light emitted by the display unit 11, thereby reducing the display effect of the display panel 1. Figure 6 As shown in L.

[0069] However, in this embodiment, the second color-changing layer 13 is limited to cover the surface of the first color-changing layer 12 close to the display area 11a. When the display unit 11 is in the bright screen state, the second color-changing layer 13 is in the shielding state. The second color-changing layer 13 can shield the first color-changing layer 12, blocking the light from the light-emitting unit 112 to the first color-changing layer 12, so that the first color-changing layer 12 cannot absorb the light and change color, thereby avoiding color interference of the first color-changing layer 12 and improving the display effect of the display panel 1.

[0070] Please refer to Figure 5 In one embodiment, there is a boundary between the display area 11a and the non-display area 11b, and there is a gap between the boundary and the surface of the first color-changing layer 12 close to the display area 11a.

[0071] Optionally, the gap between the boundary and the surface of the first color-changing layer 12 close to the display area 11a (eg Figure 5Specifically, the gap between the boundary and the surface of the first color-changing layer 12 close to the display area 11a can be 200 μm, 250 μm, 300 μm, 350 μm, 400 μm, 450 μm, 500 μm, etc.

[0072] Optionally, there is a gap between the boundary and the surface of the second color-changing layer 13 close to the display area 11 a.

[0073] Optionally, the gap between the boundary and the surface of the second color-changing layer 13 close to the display area 11a is 100 μm-500 μm. Specifically, the gap between the boundary and the surface of the second color-changing layer 13 close to the display area 11a can be 100 μm, or 150 μm, or 200 μm, or 250 μm, or 300 μm, or 350 μm, or 400 μm, or 450 μm, or 500 μm, etc.

[0074] Further optionally, the second color-changing layer 13 is closer to the boundary than the first color-changing layer 12 .

[0075] In this embodiment, a gap is defined between the boundary between the display area 11a and the non-display area 11b and the first color-changing layer 12, so that the first color-changing layer 12 is away from the display area 11a, thereby reducing the probability of light from the self-luminous unit 112 hitting the first color-changing layer 12, and reducing the probability of the first color-changing layer 12 changing color due to absorbing the light of the light-emitting unit 112, thereby reducing color interference generated by the first color-changing layer 12 and improving the display effect of the display panel 1.

[0076] Please refer to Figure 7 , Figure 7 A schematic diagram of the structure of a display panel provided in one embodiment of the present application Figure 7 In one embodiment, the display panel 1 further comprises a reflective layer 14 disposed on a side of the first color-changing layer 12 close to the display area 11 a , and the reflective layer 14 is used to reflect light emitted from the light-emitting unit 112 located in the display area 11 a to the first color-changing layer 12 .

[0077] The display unit provided in this embodiment further includes a reflective layer 14 for reflecting light. For example, the reflective layer 14 covers the side of the first color-changing layer 12 close to the display surface 111. For another example, the peripheral side surface of the first color-changing layer 12 is bent to connect the surface of the first color-changing layer 12 away from the display surface 111, and the reflective layer 14 covers the entire peripheral side surface of the first color-changing layer 12.

[0078] In this embodiment, a reflective layer 14 is provided on the surface of the first color-changing layer 12 near the display area 11a. When the display unit 11 is in the bright screen state, the reflective layer 14 can reflect the light emitted by the light-emitting unit 112 to the first color-changing layer 12, so that the first color-changing layer 12 cannot absorb the light and change color, thereby avoiding color interference of the first color-changing layer 12 and improving the display effect of the display panel 1. In addition, the reflective layer 14 can also reflect the light to the display area 11a of the display unit 11, thereby improving the brightness of the display panel 1 and reducing the power consumption of the display panel 1.

[0079] Please refer to Figure 8 , Figure 8 A schematic diagram of the structure of a display panel provided in one embodiment of the present application Figure 8 In one embodiment, along the arrangement direction from the display unit 11 to the second color-changing layer 13 , the width of the reflective layer 14 gradually increases.

[0080] As the reflective layer 14 moves away from the display unit 11, the width of the reflective layer 14 gradually increases. The shape of the reflective layer 14 can also be understood as an inverted trapezoid or a triangle. Optionally, the angle between the extending direction of the reflective layer 14 and the arrangement direction from the display unit 11 to the second color-changing layer 13 is 20°-60°. Specifically, the angle between the extending direction of the reflective layer 14 and the arrangement direction from the display unit 11 to the second color-changing layer 13 (such as Figure 8 The angle α in FIG. 1 may be 20°, 30°, 40°, 50°, 60°, etc.

[0081] This embodiment limits the width of the reflective layer 14, thereby limiting the shape of the reflective layer 14, so that the reflective layer 14 can reflect more light from the light-emitting unit 112 to the first color-changing layer 12, and reflect more light to the display area 11a, thereby further improving the brightness of the display panel 1 and further reducing the power consumption of the display panel 1.

[0082] Please refer to Fig. 9 , Fig. 9 A schematic diagram of the structure of a display panel provided in one embodiment of the present application Figure 9 In one embodiment, the display panel 1 further includes a circuit board 15, a conductive layer 16 electrically connected to the circuit board 15, and a light-transmitting insulating layer 17 covering the second color-changing layer 13, the first color-changing layer 12, and at least a portion of the conductive layer 16, the conductive layer 16 also penetrates the light-transmitting insulating layer 17 and is electrically connected to the second color-changing layer 13, and the circuit board 15 is used to control the second color-changing layer 13 to switch between the light-transmitting state and the shielding state.

[0083] The display panel 1 provided in this embodiment further includes a circuit board 15 for controlling the second color-changing layer 13. Optionally, the circuit board 15 is also electrically connected to the light-emitting unit 112 of the display unit 11 to control the light-emitting unit 112 to emit light. The circuit board 15 is disposed on one side of the display unit 11. The circuit board 15 may be a printed circuit board assembly (PCBA). When the second color-changing layer 13 is in a power-off state, the second color-changing layer 13 has a light-transmitting state that allows light to pass through. When the second color-changing layer 13 is in a power-on state, the second color-changing layer 13 has a shielding state that shields the first color-changing layer 12.

[0084] The display panel 1 provided in this embodiment also includes a conductive layer 16 for electrically connecting the second color-changing layer 13 and the circuit board 15. The conductive layer 16 and the second color-changing layer 13 are arranged on the same side of the display surface 111. The display panel 1 provided in this embodiment also includes a light-transmitting insulating layer 17 for protecting the first color-changing layer 12 and the second color-changing layer 13. Light can pass through the light-transmitting insulating layer 17. For example, light from the display unit 11 can pass through the light-transmitting insulating layer 17. For another example, external ambient light can pass through the light-transmitting insulating layer 17. The light-transmitting insulating layer 17 close to the circuit board 15 has an opening, and the conductive layer 16 is arranged in the opening. Optionally, one end of the conductive layer 16 is electrically connected to the second color-changing layer 13, and the other end is electrically connected to the control line 161, and the other end of the control line 161 is electrically connected to the circuit board 15.

[0085] In this embodiment, the second color-changing layer 13 is electrically connected to the circuit board 15 , and the circuit board 15 is also used to control the light-emitting unit 112 , thereby simplifying the structure, eliminating the need to add a controller, and improving the integration of the display panel 1 .

[0086] Please refer to Figure 1-Figure 2 ,and Figure 4 In one embodiment, the first color-changing layer 12 includes a plurality of first color-changing portions 121 spaced apart from each other along an arrangement direction perpendicular to the display unit 11 to the second color-changing layer 13, and the second color-changing layer 13 includes a plurality of second color-changing portions 131 spaced apart from each other along an arrangement direction perpendicular to the display unit 11 to the second color-changing layer 13, and one second color-changing portion 131 corresponds to one first color-changing portion 121.

[0087] The first color-changing layer 12 provided in this embodiment includes a plurality of first color-changing parts 121 and a plurality of second color-changing parts 131. Optionally, the plurality of first color-changing parts 121 are made of the same photochromic material. Optionally, at least two first color-changing parts 121 are made of different photochromic materials. Optionally, the plurality of second color-changing parts 131 are made of the same electrochromic material. Optionally, the first color-changing part 121 is arranged corresponding to the gap between two adjacent light-emitting units 112, and the second color-changing part 131 is arranged corresponding to the gap between two adjacent light-emitting units 112. Optionally, the plurality of first color-changing parts 121 and the plurality of second color-changing parts 131 are located in the non-display area 11b.

[0088] In this embodiment, by providing a plurality of first color changing portions 121 and a plurality of second color changing portions 131, the plurality of first color changing portions 121 and the plurality of second color changing portions 131 can be arranged according to a preset decorative pattern based on product or user needs, thereby improving the decorative display panel 1 and the appearance performance of the display panel 1, saving preparation materials and reducing costs.

[0089] Please refer to Figure 1-Figure 16 , Fig.10 A schematic diagram of a process for preparing a display panel provided in one embodiment of the present application. Fig.11 A process diagram of a method for preparing a display panel provided in one embodiment of the present application Figure 1 . Fig.12 A process diagram of a method for preparing a display panel provided in one embodiment of the present application Figure 2 . Fig.13 A process diagram of a method for preparing a display panel provided in one embodiment of the present application Figure 3 . Fig.14 A process diagram of a method for preparing a display panel provided in one embodiment of the present application Figure 4 . Fig.15 A process diagram of a method for preparing a display panel provided in one embodiment of the present application Figure 5 . Fig.16 A process diagram of a method for preparing a display panel provided in one embodiment of the present application Figure 6 .

[0090] The present application also provides a method for preparing a display panel 1, the method comprising:

[0091] S100, such as Fig.11 As shown, a display unit 11 is provided, having a display surface 111, and the display unit 11 has a screen-on state and a screen-off state.

[0092] S200, such as Fig.12As shown, a first color-changing layer 12 is formed on one side of the display surface 111 , and the first color-changing layer 12 can absorb light and change color.

[0093] S300, such as Fig.13 and Fig.14 As shown, a second color-changing layer 13 is formed on the side of the first color-changing layer 12 away from the display surface 111, and the second color-changing layer 13 has a light-transmitting state capable of allowing light to pass through, and a blocking state capable of blocking the first color-changing layer 12; wherein, when the display unit 11 is in the screen-off state, the second color-changing layer 13 is in the light-transmitting state, and the first color-changing layer 12 absorbs light from the outside and changes color; when the display unit 11 is in the screen-on state, the second color-changing layer 13 is in the blocking state.

[0094] The method for preparing the display panel 1 provided in this embodiment is simple, practical and highly operable. By arranging the first color-changing layer 12 and the second color-changing layer 13 on the display unit 11, not only the first color-changing layer 12 absorbs the external ambient light to change color when the screen is off, so as to decorate the display panel 1 and improve the appearance performance of the display panel 1, but also the second color-changing layer 13 blocks the first color-changing layer 12 when the screen is on, so as to avoid affecting the display effect of the display unit 11. Moreover, such an arrangement can omit the arrangement of the semi-transparent and semi-reflective decorative plate in the related art, and reduce the power consumption of the display panel 1.

[0095] Optionally, in step S100 of providing the display unit 11, the method further includes: Fig.11 As shown, a circuit board 15 electrically connected to the display unit 11 is provided.

[0096] After step S300 of forming the second color-changing layer 13, the method further includes:

[0097] S400, such as Fig.15 As shown, a conductive layer 16 is formed to electrically connect the circuit board 15 and the second color-changing layer 13 .

[0098] S500, such as Fig.16 As shown, a light-transmitting insulating layer 17 is formed to cover the second color-changing layer 13, the first color-changing layer 12, and at least a portion of the conductive layer 16. Fig. 9 The display panel 1 is shown.

[0099] In one embodiment, the specific steps of preparing the display panel 1 are as follows: first, according to the set decorative pattern, a photochromic material layer is coated on the display unit 11, and an electrochromic material layer is coated on the first color-changing layer 12. Then, etching is performed above the display area 11a of the display unit 11 to remove the photochromic material and the electrochromic material. A conductive material such as copper or aluminum is coated near the circuit board 15 to obtain a conductive layer 16, and the conductive layer 16 is connected to the second color-changing layer 13. Then, a transparent insulating layer is coated on the top, and the transparent insulating layer on the conductive layer 16 is removed. The conductive layer 16 is bound and connected to one end of the control line 161, and the other end of the control line 161 is plugged or bound and connected to the circuit board 15 to realize circuit control.

[0100] The display panel 1 prepared using this embodiment can achieve a design that matches the display unit 11 with the overall environment when the screen is off without affecting the display effect of the display unit 11, thereby meeting the aesthetic design of the overall environment and increasing the applicability of the display panel 1 in different scenarios.

[0101] The present application also provides an electronic device, which includes a housing and a display panel as provided above in the present application, wherein the display panel is mounted on the housing.

[0102] The electronic device provided in this embodiment adopts the display panel provided in the present application. By setting the first color-changing layer and the second color-changing layer on the display unit, not only the first color-changing layer absorbs the external ambient light to change color when the screen is off, so as to decorate the display panel and improve the appearance performance of the display panel, but also the second color-changing layer blocks the first color-changing layer when the screen is on, so as to avoid affecting the display effect of the display unit. In addition, such a setting can omit the setting of the semi-transparent and semi-reflective decorative plate in the related art, and reduce the power consumption of the display panel.

[0103] The above is a detailed introduction to the contents provided in the implementation mode of the present application. This article explains and illustrates the principles and implementation modes of the present application. The above explanation is only used to help understand the method and core idea of ​​the present application. At the same time, for those skilled in the art, according to the idea of ​​the present application, there will be changes in the specific implementation mode and application scope. In summary, the contents of this specification should not be understood as limiting the present application.

Claims

1. A display panel, characterized in that: The display panel comprises: A display unit having a display surface, wherein the display unit has a screen-on state and a screen-off state; A first color-changing layer, disposed on one side of the display surface, the first color-changing layer being capable of absorbing light and changing color; and A second color-changing layer is provided on a side of the first color-changing layer away from the display surface; the second color-changing layer has a light-transmitting state capable of allowing light to pass through, and a shielding state capable of shielding the first color-changing layer; Among them, when the display unit is in the screen-off state, the second color-changing layer is in the light-transmitting state, and the first color-changing layer absorbs light from the outside and changes color; when the display unit is in the screen-on state, the second color-changing layer is in the shielding state.

2. The display panel according to claim 1, wherein: The display unit has a display area and a non-display area arranged at the periphery of the display area. The display area corresponds to the light-emitting unit of the display unit. The first color-changing layer and the second color-changing layer are both located in the non-display area.

3. The display panel according to claim 2, wherein: The orthographic projection of the second color-changing layer on the display unit covers the orthographic projection of the first color-changing layer on the display unit.

4. The display panel according to claim 3, wherein: There is a boundary between the display area and the non-display area, and there is a gap between the boundary and the surface of the first color-changing layer close to the display area.

5. The display panel according to claim 2, wherein: The display panel further includes a reflective layer disposed on a side of the first color-changing layer close to the display area, and the reflective layer is used to reflect light emitted from the light-emitting unit located in the display area to the first color-changing layer.

6. The display panel according to claim 5, wherein: Along the arrangement direction from the display unit to the second color-changing layer, the width of the reflective layer gradually increases.

7. The display panel according to claim 1, wherein: The first color-changing layer is made of photochromic material, and the second color-changing layer is made of electrochromic material.

8. The display panel according to claim 1, wherein: The display panel also includes a circuit board, a conductive layer electrically connected to the circuit board, and a light-transmitting insulating layer covering the second color-changing layer, the first color-changing layer, and at least a portion of the conductive layer. The conductive layer also penetrates the light-transmitting insulating layer and is electrically connected to the second color-changing layer. The circuit board is used to control the second color-changing layer to switch between the light-transmitting state and the shielding state.

9. The display panel according to claim 1, wherein: The first color-changing layer includes a plurality of first color-changing portions arranged at intervals along an arrangement direction perpendicular to the display unit to the second color-changing layer, and the second color-changing layer includes a plurality of second color-changing portions arranged at intervals along an arrangement direction perpendicular to the display unit to the second color-changing layer, and one second color-changing portion corresponds to one first color-changing portion.

10. An electronic device, characterized in that: The electronic device comprises a housing and a display panel as described in any one of claims 1 to 9, wherein the display panel is mounted on the housing.

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