A display panel, a display device, a driving backplane and a manufacturing method thereof
By introducing an electrochromic structure layer into the TFT structure layer and using pixel voltage to drive synchronous adjustment of light transmittance, the halo problem of direct-lit backlight display panels is solved, achieving high-quality display and cost reduction.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- BEIJING BOE DISPLAY TECH CO LTD
- Filing Date
- 2022-08-09
- Publication Date
- 2026-05-22
AI Technical Summary
Existing direct-lit backlight display panels are prone to haloing when displaying small graphics on a black background, which affects image quality.
An electrochromic structure layer is set in the TFT structure layer. The light transmittance of the electrochromic structure layer is changed by driving the pixel voltage, so as to achieve synchronous driving with the TFT structure layer and synchronously adjust the light transmittance to eliminate the halo phenomenon.
It effectively suppresses halo effects, improves image quality, reduces manufacturing costs, and supports light control in high dynamic range mode.
Smart Images
Figure CN115274709B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of display technology, and in particular to a display panel, display device, driving backplate, and manufacturing method thereof. Background Technology
[0002] With the continuous development and advancement of display technology, consumers' demands for display quality are also increasing. Currently, direct-lit backlight display panels are still prone to halo effects when displaying small graphics on a black background, resulting in lower image quality in the displayed area, failing to meet users' visual needs, and affecting the viewing experience.
[0003] Therefore, current display panels still face the technical challenge of eliminating halo effects. Summary of the Invention
[0004] In view of the above problems, the present invention proposes a display panel, a display device, a driving backplate and a manufacturing method thereof, which can effectively suppress the halo phenomenon generated by the display panel.
[0005] In a first aspect, this application provides the following technical solution through an embodiment:
[0006] A drive backplane, comprising:
[0007] A substrate; a TFT structure layer disposed on one side of the substrate; the TFT structure layer includes a first conductive layer and a second conductive layer, the second conductive layer being disposed on the side of the first conductive layer away from the substrate, either the first conductive layer or the second conductive layer being configured to receive a pixel voltage; and an electrochromic structure layer stacked between the first conductive layer and the second conductive layer; a first side of the electrochromic structure layer being conductively connected to the first conductive layer, and a second side of the electrochromic structure layer being conductively connected to the second conductive layer; the electrochromic structure layer being configured to change light transmittance under the drive of the pixel voltage.
[0008] Optionally, the first conductive layer is configured to receive a pixel voltage, the first conductive layer includes a pixel electrode layer, and the second conductive layer includes a common electrode layer; the electrochromic structure layer is disposed between the pixel electrode layer and the common electrode layer; the pixel electrode layer is conductively connected to a first side of the electrochromic structure layer, and the common electrode layer is conductively connected to a second side of the electrochromic structure layer.
[0009] Optionally, the first conductive layer is configured to receive a pixel voltage. The first conductive layer includes a gate layer, and the TFT structure layer further includes a pixel electrode layer. The gate layer is conductively connected to the pixel electrode layer. The second conductive layer includes a male electrode layer, and the electrochromic structure layer is disposed between the gate layer and the male electrode layer. The gate layer is conductively connected to a first side of the electrochromic structure layer, and the male electrode layer is conductively connected to a second side of the electrochromic structure layer.
[0010] Optionally, the first conductive layer is configured to receive a pixel voltage; the electrochromic structure layer includes an ion storage layer, an electrolyte layer, and a color-changing layer; the ion storage layer is disposed on the side of the first conductive layer away from the substrate, the electrolyte layer is disposed on the side of the ion storage layer away from the substrate, and the color-changing layer is disposed on the side of the electrolyte layer away from the substrate; the ion storage layer is electrically connected to the first conductive layer, and the color-changing layer is electrically connected to the second conductive layer.
[0011] Optionally, the first conductive layer is configured to receive a pixel voltage; the electrochromic structure layer includes a third conductive layer, a color-changing functional layer, and a fourth conductive layer; the third conductive layer is disposed on the side of the first conductive layer away from the substrate, the color-changing functional layer is disposed on the side of the third conductive layer away from the substrate, and the fourth conductive layer is disposed on the side of the color-changing functional layer away from the substrate; the third conductive layer is electrically connected to the first conductive layer, and the fourth conductive layer is electrically connected to the second conductive layer.
[0012] Optionally, the TFT structure layer further includes a transistor layer; the transistor layer is disposed between the first conductive layer and the second conductive layer, and the electrochromic structure layer is disposed between the first conductive layer and the transistor layer.
[0013] Optionally, the TFT structure layer is divided into multiple transistor unit regions, and the electrochromic structure layer is divided into multiple color-changing unit regions; the transistor unit regions and the color-changing unit regions correspond one-to-one.
[0014] Secondly, based on the same inventive concept, this application provides the following technical solution through an embodiment:
[0015] A display panel includes: a backlight, a color rendering functional layer, and a driving backplate as described in any of the first aspects above; the color rendering functional layer is disposed on the side of the TFT structure layer away from the substrate, and the color rendering functional layer is used to define sub-pixels and display colors; the backlight is disposed on the side of the substrate away from the TFT structure layer.
[0016] Thirdly, based on the same inventive concept, this application provides the following technical solution through an embodiment:
[0017] A display device includes: a driving backplate as described in any of the first aspects above, or a display panel as described in the second aspect above.
[0018] Fourthly, based on the same inventive concept, this application provides the following technical solution through an embodiment:
[0019] A method for manufacturing a drive backplane, comprising:
[0020] A substrate is provided; a first conductive layer of a TFT structure layer is formed on one side of the substrate; an electrochromic structure layer is formed on the side of the first conductive layer away from the substrate; wherein a first side of the electrochromic structure layer is conductively connected to the first conductive layer; a second conductive layer of the TFT structure layer is formed on the side of the electrochromic structure layer away from the substrate; either the first conductive layer or the second conductive layer is configured to receive a pixel voltage, a second side of the electrochromic structure layer is conductively connected to the second conductive layer, and the electrochromic structure layer is configured to change its light transmittance under the drive of the pixel voltage.
[0021] This invention provides a driving backplane, a display panel, and a display device, wherein an electrochromic structure layer is disposed between the first and second conductive layers of the TFT structure layer. Therefore, the wiring design of the TFT structure layer can be partially utilized, reducing manufacturing costs. Furthermore, since either the first or second conductive layer is connected to the pixel voltage, the electrochromic structure layer can be synchronously driven with the TFT under the pixel voltage, and the light transmittance can be synchronously adjusted by different pixel voltages, thereby effectively reducing or eliminating halo phenomena.
[0022] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of the present invention more apparent and understandable, specific embodiments of the present invention are described below. Attached Figure Description
[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0024] Figure 1 A schematic diagram illustrating the principle behind halo defects in existing display panels;
[0025] Figure 2 This is a schematic diagram of the structure of the first type of drive backplate in an embodiment of the present invention;
[0026] Figure 3 This is a schematic diagram of the structure of the second type of drive backplate in an embodiment of the present invention;
[0027] Figure 3A This is a schematic diagram of the third type of drive backplate in an embodiment of the present invention;
[0028] Figure 4 This is a schematic diagram illustrating the principle of implementing non-HDR mode using the driving backplane in an embodiment of the present invention.
[0029] Figure 5 This is a schematic diagram illustrating the principle of implementing HDR mode using a driver backplane in an embodiment of the present invention.
[0030] Figure 6 This is a schematic diagram of the electrochromic structure layer in an embodiment of the present invention;
[0031] Figure 7 This is a schematic diagram of the structure of the fourth type of drive backplate in an embodiment of the present invention;
[0032] Figure 8 This is a schematic diagram of the structure of a display panel according to an embodiment of the present invention;
[0033] Figure 9 This is a flowchart of a method for manufacturing a drive backplane according to an embodiment of the present invention. Detailed Implementation
[0034] Embodiments of the present disclosure will now be described with reference to the accompanying drawings. However, it should be understood that these descriptions are exemplary only and are not intended to limit the scope of the disclosure. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concepts of the present disclosure.
[0035] The accompanying drawings illustrate various structural schematics according to embodiments of the present disclosure. These drawings are not to scale, and some details have been enlarged for clarity, and some details may have been omitted. The shapes of the various regions and layers shown in the drawings, as well as their relative sizes and positional relationships, are merely exemplary and may deviate from reality due to manufacturing tolerances or technical limitations. Furthermore, those skilled in the art can design regions / layers with different shapes, sizes, and relative positions as needed.
[0036] In the context of this disclosure, when a layer / element is referred to as being "above" another layer / element, the layer / element may be directly above the other layer / element, or there may be an intermediate layer / element between them. Additionally, if a layer / element is "above" another layer / element in one orientation, then when the orientation is reversed, the layer / element may be "below" the other layer / element.
[0037] Currently, in direct-lit backlight displays using local dimming, the backlight LEDs are controlled in sections, which can easily lead to issues like halos. For example, when displaying a small graphic on a black background, the corresponding LED area for that graphic is all turned on. Some light will also leak out around the graphic, causing a halo effect and reducing image quality. Figure 1 As shown, when region 11 of the backlight 10 in a display panel emits light, and only the pixels corresponding to region 11 are driven, light will also pass through regions other than the TFT (Thin Film Transistor) array substrate 12 corresponding to region 11, ultimately resulting in halo defects after passing through the color filter substrate 13. The invention provides a driving substrate, display panel, and display device that utilizes an adjustable transmittance of electrochromic materials to solve the above-mentioned technical problem. Electrochromism is the process by which a material changes color by injecting or extracting external charges (ions or electrons), manifesting as reversible changes in color and transparency in appearance. Specifically, the electrochromic materials used in this invention can be inorganic electrochromic materials, such as transition metal oxides or hydrates; they can also be organic electrochromic materials, such as small-molecule organic electrochromic materials and polymeric electrochromic materials, etc. Organic electrochromic materials have advantages such as fast color-changing speed, strong memory effect, low energy consumption, color diversity, and high transmittance difference under different states. This invention provides a driving backplane, a display panel, and a display device. By setting an electrochromic structure layer in the TFT structure layer, and driving the electrochromic structure layer through pixel voltage, it can simultaneously turn on or off with the corresponding transistors formed in the TFT structure layer. This achieves simultaneous driving of the transistors and the electrochromic structure layer, synchronously adjusting the light transmittance, and effectively suppressing halo phenomena. The overall concept of this invention will be further elaborated and explained below through specific embodiments.
[0038] Please see Figure 2This invention provides a driving backplane 100, comprising: a substrate 110, a TFT structure layer 120, and an electrochromic structure layer 130. The TFT structure layer 120 is disposed on one side of the substrate 110 and includes a first conductive layer 121 and a second conductive layer 122. The second conductive layer 122 is disposed on the side of the first conductive layer 121 away from the substrate 110. Either the first conductive layer 121 or the second conductive layer 122 is configured to receive a pixel voltage, which is the voltage used to drive a sub-pixel to emit light. The electrochromic structure layer 130 is stacked between the first conductive layer 121 and the second conductive layer 122. A first side of the electrochromic structure layer 130 is electrically connected to the first conductive layer 121, and a second side of the electrochromic structure layer 130 is electrically connected to the second conductive layer 122. The electrochromic structure layer 130 is configured to change its light transmittance under the drive of the pixel voltage.
[0039] In this embodiment, since the electrochromic structure layer 130 is located between the first conductive layer 121 and the second conductive layer 122 of the TFT structure layer 120, the wiring design of the TFT structure layer 120 can be partially utilized, reducing manufacturing costs. Simultaneously, since either the first conductive layer 121 or the second conductive layer 122 is connected to the pixel voltage, the electrochromic structure layer 130 can be synchronously driven with the TFT under the pixel voltage, and the light transmittance can be synchronously adjusted by different pixel voltages, thereby effectively reducing or eliminating halo phenomena.
[0040] It should be noted that in this embodiment, the setting direction of the electrochromic structure layer 130 can be adjusted based on the configuration of the first conductive layer 121 and the second conductive layer 122. For example, if the first conductive structure layer is configured to receive the pixel voltage, the first side of the electrochromic structure layer 130 is the driving side, and the first side of the electrochromic structure layer 130 is closer to the substrate 110; if the second conductive structure layer is configured to receive the pixel voltage, the second side of the electrochromic structure layer 130 is the driving side, and the second side of the electrochromic structure layer 130 is closer to the substrate 110. That is to say, the setting direction of the electrochromic structure layer 130 is opposite in these two cases.
[0041] In some implementations, a pixel may include red, green, and blue sub-pixels. Therefore, the TFT structure layer 120 is divided into multiple transistor unit regions, each corresponding to one sub-pixel. Correspondingly, the electrochromic structure layer 130 is also divided into multiple color-changing unit regions, with a one-to-one correspondence between the transistor unit regions and the color-changing unit regions. This allows for precise control of the light transmittance for each sub-pixel, improving the halo elimination effect.
[0042] In this embodiment, the first conductive layer 121 can be used as an electrode layer configured to receive the pixel voltage, and the following description will be based on this. The implementation of the second conductive layer 122 as an electrode layer configured to receive the pixel voltage can be understood by analogy and will not be described in detail.
[0043] The substrate 110 may be a transparent substrate, such as a glass substrate.
[0044] The TFT structure layer 120 is a structure layer for forming a transistor driving array, which includes driving transistors arranged in an array. The TFT structure layer 120 includes a first conductive layer 121, a second conductive layer 122, and a transistor layer 123. The first conductive layer 121, the transistor layer 123, and the second conductive layer 122 are stacked sequentially.
[0045] Please see Figure 3 In some implementations, the first conductive layer 121 includes a pixel electrode layer 221, meaning the first conductive layer 121 can be implemented using the pixel electrode layer 221. The second conductive layer 122 includes a common electrode layer 222, meaning the second conductive layer 122 can be implemented using the common electrode layer 222. A pixel electrode in the pixel electrode layer 221 and a corresponding common electrode in the common electrode layer 222 can be used to drive a sub-pixel. Both the pixel electrode layer 221 and the common electrode layer 222 can be made of existing transparent conductive materials, for example, ITO (indium tin oxide). Furthermore, an electrochromic structure layer 130 is disposed between the pixel electrode layer 221 and the common electrode layer 222; the pixel electrode layer 221 is conductively connected to a first side of the electrochromic structure layer 130, and the common electrode layer 222 is conductively connected to a second side of the electrochromic structure layer 130. The electrochromic structure layer 130 can be driven to change color by the voltage difference between the pixel electrode layer 221 and the common electrode layer 222, thereby changing the light transmittance. In this implementation, the TFT structure layer 120 also includes a gate layer 210, which is configured to receive a gate driving voltage. The gate layer 210 is disposed between the transistor layer 123 and the electrochromic structure layer 130. During the driving of the electrochromic structure layer 130, it can also be ensured that it is powered on simultaneously with the gate layer 210 when the pixel electrode is powered on, thereby realizing synchronous driving of the transistor driving array and the electrochromic structure layer 130.
[0046] Please see Figure 3AIn some implementations, the first conductive layer 121 includes a gate layer 310, meaning the first conductive layer 121 can be implemented using a gate layer 310. The TFT structure layer 120 also includes a pixel electrode layer 321, with the gate layer 310 and the pixel electrode layer 321 electrically connected, ensuring that the gate layer 310 and the pixel electrode layer 321 are powered on simultaneously. The second conductive layer 122 includes a common electrode layer, meaning the second conductive layer 122 can be implemented using a common electrode layer 322. The electrochromic structure layer 130 is disposed between the gate layer 310 and the common electrode layer. The gate layer 310 is electrically connected to a first side of the electrochromic structure layer 130, and the common electrode layer is electrically connected to a second side of the electrochromic structure layer 130. In this implementation, it is possible to ensure that the transistor driving array and the electrochromic structure layer 130 are driven synchronously; simultaneously, since the voltage of the gate layer 310 is higher than that of the pixel electrode layer 321, more accurate driving precision can be achieved when driving the electrochromic structure layer 130.
[0047] Understandably, the above structural arrangement allows the color-changing units corresponding to each color-changing unit region and the driving transistors corresponding to each transistor unit region to form a parallel structure. When the driving transistors of the driving backplane 100 need to be turned on, the gate layer 310 and the electrochromic structure layer 130 can be powered on simultaneously, and the voltage change of the gate layer 310 is consistent with the pixel voltage change of the pixel electrode layer 321. The electrochromic structure layer 130 has a black state and a transparent state, and its transparency can also be changed based on different driving voltages. For example, when the pixel voltage driving a certain sub-pixel is the voltage corresponding to grayscale L255, the color-changing unit in the electrochromic structure layer 130 corresponding to that sub-pixel can become completely transparent. When the TFT applies voltage, a voltage is simultaneously applied to the parallel electrochromic structure layer 130 to make it transparent, while other parts of the electrochromic structure layer 130 that are not subject to pixel voltage remain in a black, opaque state. This reduces the light transmitted through the sub-pixels, achieves brightness control adjustment, and suppresses halo phenomena.
[0048] In addition, the relationship between the transparency of the electrochromic structure and the pixel voltage in this embodiment can be controlled by parameters such as the material used to manufacture the electrochromic structure layer 130 and the thickness of the film formed by different materials, which will not be elaborated in this embodiment.
[0049] In some implementations, the display panel used by the driver backplane 100 has an HDR (High Dynamic Range) mode. The implementation can be as follows:
[0050] The driving backplane 100 may further include a mode control conductive layer, which can be disposed between the substrate 110 and the pixel electrode layer to avoid affecting the manufacturing of other film layers. Alternatively, it can be disposed between other film layers, for example, between the pixel electrode layer and the gate layer. A first switching transistor provides a conductive connection between the mode control conductive layer and the first side of the electrochromic structure layer 130. Simultaneously, a second switching transistor is disposed between the first conductive layer 121 and the first side of the electrochromic structure layer 130, and the second side of the first conductive layer 121 and the electrochromic structure layer 130 are conductively connected via the second switching transistor. During manufacturing, the first and second switching transistors can be formed simultaneously during the manufacturing of the transistor layer 123. Connections can be made using vias or other methods, without limitation. The mode control conductive layer can be configured to receive a constant preset voltage, which drives the electrochromic structure layer 130 to its maximum transparent state, such as a fully transparent state. When the backplane 100 is operating, if the display panel needs to operate in non-HDR mode, the first switching transistor can be turned on and the second switching transistor can be turned off. At this time, the electrochromic structure layer 130 can be made to its maximum transparent state under the drive of the preset voltage, and the light generated by the backlight 410 can pass through almost unobstructed, and finally the light is emitted through the pixel structure layer 420, such as... Figure 4 As shown; if the display panel needs to operate in HDR mode, the first switching transistor can be turned off and the second switching transistor turned on. At this time, the electrochromic structure layer 130 operates under the drive of the pixel voltage, synchronized with the operating state of the driving transistor. That is, the color-changing units corresponding to the undriven driving transistors are all black, effectively blocking light, achieving HDR mode, and avoiding halo effects. Figure 5 As shown, the light emitted from region 411 of the backlight 410 can be completely blocked at the position corresponding to the undriven driving transistor.
[0051] The transistor layer 123 in the TFT structure layer 120 may include source / drain metal layers, semiconductor layers, insulating layers, etc. Corresponding driving transistors can be formed through the transistor layer 123. The specific implementation of the transistor layer 123 can be referenced to the driving transistors of the driving backplane 100 in the prior art, and will not be elaborated here.
[0052] The electrochromic structure layer 130 achieves different light transmittance under different voltage driving conditions. The specific implementation of the electrochromic structure layer 130 is explained below.
[0053] Please see Figure 6In some implementations, the electrochromic structure layer 130 includes a third conductive layer, a color-changing functional layer, and a fourth conductive layer. The third conductive layer may be disposed on the side of the first conductive layer 121 away from the substrate 110, the color-changing functional layer may be disposed on the side of the third conductive layer away from the substrate 110, and the fourth conductive layer may be disposed on the side of the color-changing functional layer away from the substrate 110. The third conductive layer is electrically connected to the first conductive layer 121, and the fourth conductive layer is electrically connected to the second conductive layer 122. The color-changing functional layer may include an ion storage layer, an electrolyte layer, and a color-changing layer stacked sequentially. The functions of each layer can be understood with reference to the prior art, and will not be elaborated here.
[0054] Of course, in some implementations, the electrochromic structure layer 130 may not include the third conductive layer and the fourth conductive layer. Instead, the first conductive layer 121 can be used to replace the third conductive layer, and the second conductive layer 122 can be used to replace the fourth conductive layer. Figure 7 As shown. Specifically, the electrochromic structure layer 130 may include an ion storage layer, an electrolyte layer, and a color-changing layer. The ion storage layer is disposed on the side of the first conductive layer 121 away from the substrate 110, the electrolyte layer is disposed on the side of the ion storage layer away from the substrate 110, and the color-changing layer is disposed on the side of the electrolyte layer away from the substrate 110. The ion storage layer is electrically connected to the first conductive layer 121, and the color-changing layer is electrically connected to the second conductive layer 122. This implementation method can further reduce the thickness of the electrochromic structure layer 130, thereby controlling the increase in the thickness of the drive backplate 100.
[0055] It should be noted that the film structure described above is not the only film structure of the drive backplane 100. For example, a corresponding insulating layer can be provided between two conductor film layers. In addition, passivation layers, planarization layers, etc. can also be included. The specific implementation can be referred to existing conventional methods, which will not be elaborated here.
[0056] In summary, the electrochromic structure layer 130 of the driving backplane 100 in this embodiment can be turned on or off simultaneously with the driving transistors formed in the corresponding TFT structure layer 120, so as to realize the simultaneous driving of the driving transistors and the electrochromic structure layer 130 and the synchronous adjustment of light transmittance, which can effectively suppress the halo phenomenon.
[0057] Please see Figure 8 Based on the same inventive concept, in one embodiment of the present invention, a display panel is also provided, which includes: a backlight, a color rendering functional layer and a driving backplate 100 as described in any of the foregoing embodiments.
[0058] The color rendering layer is located on the side of the TFT structure layer away from the substrate. The color rendering layer is used to define sub-pixels and display colors. The backlight is located on the side of the substrate away from the TFT structure layer.
[0059] In some implementations, the color rendering functional layer may include a pixel definition layer, liquid crystal, color filter layer, etc. The pixel definition layer is disposed on the side of the TFT structure layer away from the substrate, the color filter layer is disposed on the side of the substrate from which the pixel definition layer is located, and the liquid crystal may fill the space between the pixel definition layer and the color filter layer.
[0060] In some implementations, the display panel is a direct-lit backlight panel. Specifically, it can be a MiniLED (submillimeter-sized light-emitting diode) display panel; or an LCD display panel.
[0061] For example, it could be a BD-CELL type display panel. BD-CELL technology refers to a solution that uses two OC (Open Cell, liquid crystal panel) panels bonded together using related technologies. The main panel (Main Cell) is on the upper layer and mainly focuses on color control; the sub-panel (Sub Cell) is on the lower layer, a monochrome screen, mainly used for fine dimming, presenting high contrast and rich dark details. When applied to a BD-CELL type display panel, the sub-panel can be replaced by the driving backplane 100 described in this application, and the color display function layer can adopt the existing implementation method of the main panel. Using the display panel of this embodiment to achieve fine dimming, compared with existing BD-CELL type display panels, can effectively reduce the module thickness.
[0062] For any beneficial effects not mentioned in this embodiment and the technical details of their implementation, please refer to the relevant description of the drive backplane 100 in the foregoing embodiments, which will not be repeated here.
[0063] Based on the same inventive concept, this embodiment of the invention also provides a display device, including: any of the driving backplates in the foregoing embodiments, or including any of the display panels described in the foregoing embodiments. The display device in this embodiment can be a mobile phone, television, computer monitor, laptop computer, advertising machine, tablet computer, etc., and is not limited thereto.
[0064] Please see Figure 9 Based on the same inventive concept, this embodiment also provides a method for manufacturing a drive backplane, the method comprising:
[0065] Step S10: Provide a substrate;
[0066] Step S20: Form a first conductive layer of the TFT structure layer on one side of the substrate;
[0067] Step S30: An electrochromic structure layer is formed on the side of the first conductive layer away from the substrate; wherein, the first side of the electrochromic structure layer is electrically connected to the first conductive layer;
[0068] Step S40: A second conductive layer of the TFT structure layer is formed on the side of the electrochromic structure layer away from the substrate; either the first conductive layer or the second conductive layer is configured to be connected to a pixel voltage, the second side of the electrochromic structure layer is conductively connected to the second conductive layer, and the electrochromic structure layer is configured to change its light transmittance under the drive of the pixel voltage.
[0069] In steps S10-S40, the semiconductor process methods used include, but are not limited to, chemical vapor deposition, wet etching, dry etching, etc., and are not limited thereto. The structural relationships and specific implementations of the final formed film layers can be found in the aforementioned embodiment of the driving backplane; film layers, film layer materials, and structures not mentioned can be found in existing technologies and will not be elaborated here.
[0070] It should be noted that the beneficial effects of the structure formed by each step in the manufacturing method of the drive backplane provided in this embodiment have been described in the foregoing embodiments concerning the drive backplane. For details, please refer to the foregoing embodiments concerning the drive backplane. In this embodiment, they will not be repeated.
[0071] The above description does not provide detailed explanations of the technical aspects of each layer's patterning, etching, etc. However, those skilled in the art should understand that various technical means can be used to form layers and regions of the desired shape. Furthermore, to form the same structure, those skilled in the art can also design methods that are not entirely identical to those described above. Additionally, although various embodiments have been described above, this does not mean that the measures in the various embodiments cannot be used advantageously in combination.
[0072] Although preferred embodiments of the invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including both the preferred embodiments and all changes and modifications falling within the scope of the invention.
[0073] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.
Claims
1. A drive backplane, characterized in that, include: Substrate; A TFT structure layer is disposed on one side of the substrate; the TFT structure layer includes a first conductive layer and a second conductive layer, the second conductive layer is disposed on the side of the first conductive layer away from the substrate, and either the first conductive layer or the second conductive layer is configured to receive a pixel voltage. as well as An electrochromic structure layer is stacked between the first conductive layer and the second conductive layer, and partially utilizes the wiring design of the TFT structure layer; a first side of the electrochromic structure layer is conductively connected to the first conductive layer, and a second side of the electrochromic structure layer is conductively connected to the second conductive layer. The electrochromic structure layer is configured to change light transmittance under the drive of the pixel voltage; The first conductive layer is configured to receive a pixel voltage. The first conductive layer includes a pixel electrode layer, and the second conductive layer includes a common electrode layer. The electrochromic structure layer is disposed between the pixel electrode layer and the common electrode layer. The pixel electrode layer is electrically connected to a first side of the electrochromic structure layer, and the common electrode layer is electrically connected to a second side of the electrochromic structure layer; or... The first conductive layer is configured to receive a pixel voltage. The first conductive layer includes a gate layer, and the TFT structure layer further includes a pixel electrode layer. The gate layer is conductively connected to the pixel electrode layer. The second conductive layer includes a common electrode layer, and the electrochromic structure layer is disposed between the gate layer and the common electrode layer. The gate layer is electrically connected to the first side of the electrochromic structure layer, and the male electrode layer is electrically connected to the second side of the electrochromic structure layer. The TFT structure layer further includes: a transistor layer; The transistor layer is disposed between the first conductive layer and the second conductive layer, and the electrochromic structure layer is disposed between the first conductive layer and the transistor layer.
2. The drive backplane as described in claim 1, characterized in that, The first conductive layer is configured to receive a pixel voltage; the electrochromic structure layer includes an ion storage layer, an electrolyte layer, and a color-changing layer; the ion storage layer is disposed on the side of the first conductive layer away from the substrate, the electrolyte layer is disposed on the side of the ion storage layer away from the substrate, and the color-changing layer is disposed on the side of the electrolyte layer away from the substrate. The ion storage layer is electrically connected to the first conductive layer, and the color-changing layer is electrically connected to the second conductive layer.
3. The drive backplane as described in claim 1, characterized in that, The first conductive layer is configured to receive a pixel voltage; the electrochromic structure layer includes a third conductive layer, a color-changing functional layer, and a fourth conductive layer; the third conductive layer is disposed on the side of the first conductive layer away from the substrate, the color-changing functional layer is disposed on the side of the third conductive layer away from the substrate, and the fourth conductive layer is disposed on the side of the color-changing functional layer away from the substrate. The third conductive layer is electrically connected to the first conductive layer, and the fourth conductive layer is electrically connected to the second conductive layer.
4. The drive backplane as described in claim 1, characterized in that, The TFT structure layer is divided into multiple transistor unit regions, and the electrochromic structure layer is divided into multiple color-changing unit regions; the transistor unit regions and the color-changing unit regions correspond one-to-one.
5. A display panel, characterized in that, include: Backlight, color rendering functional layer and driving backplate as described in any one of claims 1-4; The color rendering functional layer is disposed on the side of the TFT structure layer away from the substrate, and the color rendering functional layer is used to define sub-pixels and display colors; The backlight source is disposed on the side of the substrate away from the TFT structure layer.
6. A display device, characterized in that, include: The driving backplate according to any one of claims 1-4, or including the display panel according to claim 5.
7. A method for manufacturing a drive backplane, used to manufacture a drive backplane as described in any one of claims 1-4, characterized in that, include: Provide substrates; A first conductive layer of a TFT structure layer is formed on one side of the substrate. An electrochromic structure layer is formed on the side of the first conductive layer away from the substrate; wherein a first side of the electrochromic structure layer is electrically connected to the first conductive layer. A second conductive layer of the TFT structure layer is formed on the side of the electrochromic structure layer away from the substrate; either the first conductive layer or the second conductive layer is configured to be connected to a pixel voltage; the second side of the electrochromic structure layer is conductively connected to the second conductive layer; and the electrochromic structure layer is configured to change its light transmittance under the drive of the pixel voltage.