Active matrix control system for glass-based fine-pitch display screens based on AM drive
By building a miniature pixel unit array on a glass-based fine-pitch display and integrating independent thin-film transistors and storage capacitors, combined with dynamic color mapping and adaptive gamma correction, the problems of low driving efficiency, high power consumption and image distortion in existing technologies are solved, and efficient and flexible display control is achieved to adapt to different environments and content changes.
Patent Information
- Application Number
- CN202511000443.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-21
- Publication Date
- 2025-09-23
- Estimated Expiration
- 2045-07-21
AI Technical Summary
The existing active matrix control system of glass-based small-pitch display screens is static and single in thin-film transistor design, driving network structure, refresh strategy and color mapping method, resulting in problems such as low driving efficiency, high power consumption, slow response speed, image distortion, etc., and cannot meet the needs of high-resolution and dynamic display.
The AM-driven active matrix control system for a glass-based fine-pitch display screen uses photolithography and thin-film deposition technology to construct a miniature pixel unit array, integrate independent thin-film transistors and storage capacitors, combine dynamic color mapping and adaptive gamma correction, dynamically adjust the row and column scan paths and power consumption management, and achieve independent control of each pixel unit and sub-pixel partition.
It improves the response speed and driving efficiency of the display, reduces power consumption, enhances the flexibility and detail of image display, adapts to different environments and content changes, and extends the battery life and reliability of the device.
Smart Images

Figure CN120510801B_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the field of electronic circuit structure and display technology, and more particularly to an active matrix control system of a glass-based fine-pitch display screen based on AM drive. Background Art
[0002] Patent publication number CN111562855A discloses a method and system for adjusting and controlling touch points on a display screen. The method obtains the direct distance between the user's eyes and a preset reference object, the relative tilt angle, and the horizontal distance between the user and the display screen, and processes the obtained tilt angle and the thickness of the glass panel of the display screen to obtain the offset distance of the user's line of sight affected by the thickness of the glass panel. Then, combined with the position of the touch point applied by the user on the display screen, the new position of the touch point adjusted based on the obtained offset distance is obtained, thereby avoiding the adverse effect of the thickness of the glass panel of the display screen on the user touching the display screen, solving the problem of touch misalignment caused by the refraction angle caused by the thickness of the glass panel of the display screen, and ensuring that the display screen responds to the touch operation actions applied by the user on the display screen in a timely and accurate manner.
[0003] The existing active matrix control system for glass-based fine-pitch displays has the following main problems:
[0004] When designing thin-film transistors, existing technologies typically set parameters such as gate length and source-drain width based on experience or static models. This makes it difficult to dynamically optimize according to the current requirements of different pixel units, high-resolution drive requirements, and leakage control targets, which can easily lead to problems such as low drive efficiency, excessive leakage current, or high power consumption. Existing technologies lack a systematic approach to optimizing connection line layout and wiring density, which can easily lead to problems such as drive signal interference, increased crosstalk, and unstable electrical connections. Existing drive network structures typically rely on static arrangements or row-column matrix scanning methods, lacking flexible addressing schemes for high-resolution, multi-subpixel partitioned displays, and are not conducive to supporting complex display control strategies.
[0005] Existing display screens typically use a fixed row-by-row or column-by-column scanning method, which cannot dynamically reconfigure the scanning path based on real-time image content changes. This makes it difficult to efficiently refresh locally changing areas, resulting in redundant operations in the refresh process, increased energy consumption, and limited response speed. Current refresh strategies are mostly based on fixed refresh rates or coarse-grained control logic, failing to fine-tune the refresh rate based on the amount of change in each frame's image content. This results in insufficient power conservation for static content and potentially insufficient refresh rates for dynamic content, causing image smearing, delays, or flickering. Traditional display screen power consumption is typically estimated using a fixed proportional constant, failing to dynamically account for real-time changes in ambient brightness or operating temperature.
[0006] Traditional color mapping methods typically use fixed color transformation matrices or static lookup tables, making it difficult to dynamically adjust color saturation and contrast. This can lead to image distortion or loss of detail in areas with rapidly changing brightness or dense detail. Gamma correction uses fixed values or a single curve based on the brightness of the entire frame, which cannot differentiate the brightness of different areas in the image. This can cause problems such as overly dark shadows and overexposed highlights, resulting in a poor visual experience in high dynamic range scenes.
[0007] In view of this, the present invention proposes an active matrix control system for a glass-based fine-pitch display screen based on AM drive to solve the above problems. Summary of the Invention
[0008] In order to overcome the above-mentioned defects of the prior art and to achieve the above-mentioned objectives, the present invention provides the following technical solution: an active matrix control system for a glass-based fine-pitch display screen based on AM drive, comprising:
[0009] Glass-based pixel array module, used to construct a micro-pixel unit array on a glass substrate, using photolithography and thin film deposition technology to achieve ultra-small pixel pitch layout and integrate independent sub-pixel partitions within each pixel unit;
[0010] The active matrix drive module introduces independent thin-film transistors and storage capacitors on the miniaturized pixel unit array to form an addressable drive network. The independent thin-film transistors serve as active matrix switch units, and the storage capacitors serve as charge retention units. This allows for independent control of the voltage and current of each pixel unit and independent sub-pixel partition, and constructs row and column scan paths.
[0011] The pixel drive generation module receives external input image data and video data, uses dynamic color mapping algorithm and adaptive gamma correction technology to optimize the color performance of image data and video data according to the ultra-small pixel pitch layout, and generates corresponding pixel drive data;
[0012] The dynamic refresh control module, based on the addressable drive network and pixel drive data, performs row and column addressing and data refresh on the changed pixel unit area through the image change detection mechanism, dynamically adjusts the row and column scanning path, and generates corresponding refresh status data;
[0013] The power consumption control management module monitors the operating status of the display screen in real time and adjusts the operating parameters of the display screen based on pixel drive data and refresh status data. It dynamically adjusts the operating current and voltage of each pixel unit and independent sub-pixel partition in combination with changes in the operating status of the display screen to perform adaptive power consumption management.
[0014] Preferably, the method for performing ultra-small pixel pitch layout includes:
[0015] A transparent glass substrate is selected and subjected to ultrasonic and chemical cleaning to remove dirt and impurities from the surface of the glass substrate. Thin film deposition technology is then used to deposit different functional layers on the glass substrate according to preset design requirements. The functional layers include metal electrode layers, oxide dielectric layers, and semiconductor material layers. The preset design requirements include film thickness requirements, material surface characteristics requirements, and environmental adaptability requirements.
[0016] After the thin film deposition is completed, the surface of the glass substrate is coated with photoresist, and ultraviolet light is used to illuminate the photoresist through a mask; the mask contains a predetermined design pattern of a micro-pixel unit array. After exposure, the photoresist in the unexposed area is partially removed with a developer, leaving the pattern in the exposed area, thereby forming a predetermined design pattern on the glass substrate;
[0017] Depending on the different functional layers, dry etching and wet etching are selected to remove excess materials and retain the required miniature pixel unit array; during the photolithography and thin film deposition process, the miniature pixel unit array is constructed on the glass substrate according to the preset design requirements; the pixel unit spacing threshold is preset, and when the pixel unit spacing is less than or equal to the preset pixel unit spacing, the ultra-small pixel spacing layout is completed.
[0018] Preferably, the method for integrating independent sub-pixel partitioning includes:
[0019] Based on the ultra-small pixel pitch, sub-pixel partitioning is performed. The number and layout of sub-pixels required within each pixel unit are determined according to the preset resolution requirements of the display. Each pixel unit is divided into three sub-pixels, corresponding to the red, green, and blue color channels respectively. The preset resolution requirements of the display include sub-pixel size, arrangement, and distance between sub-pixels.
[0020] An independent electrode layer is integrated inside each sub-pixel area. Each independent electrode layer controls the current supply of each sub-pixel. An oxide dielectric layer and a semiconductor material layer are integrated inside each sub-pixel. Through the integration of the electrode layer, the oxide dielectric layer and the semiconductor material layer, an independent sub-pixel partition is finally formed inside each pixel unit.
[0021] Preferably, the method for forming an addressable drive network comprises:
[0022] Depositing thin film material on a glass substrate using thin film deposition technology to form a semiconductor layer of a thin film transistor; defining the source, drain, and gate electrode regions of the thin film transistor on the surface of the glass substrate using photolithography technology; and controlling the size and electrode layout of the thin film transistor according to preset thin film transistor design requirements, which include control of the thin film transistor size, control of the electrode layout, and optimization of electrical connections;
[0023] The control of thin film transistor dimensions includes the spacing between the source, drain, and gate of the thin film transistor, the size of the source and drain, and the size of the gate. The control of electrode layout includes the arrangement of the gate and source and drain, and the spacing between the gate electrodes. The arrangement of the gate and source and drain includes linear and staggered layouts. The optimization control of electrical connections includes the layout of connecting wires and the wiring density.
[0024] Each thin-film transistor is paired one-to-one with the corresponding pixel unit or independent sub-pixel partition, and the thin-film transistors are arranged in a parallel or staggered layout; the storage capacitor and the thin-film transistor share a pixel unit area, and the electrode layer and dielectric layer of the storage capacitor are constructed by dry etching or wet etching; through the integration of independent thin-film transistors and storage capacitors, an addressable drive network is formed.
[0025] Preferably, the method for independently controlling the voltage and current of each pixel unit and independent sub-pixel partition includes:
[0026] Independent thin-film transistors are used as active matrix switching units, with each pixel unit or independent sub-pixel partition assigned an independent thin-film transistor. The switching behavior of the thin-film transistors determines the voltage and current of each pixel unit. The current flow between the source and drain is regulated by the gate control signal in each thin-film transistor. A gate voltage threshold is preset. When the gate voltage is greater than or equal to the preset gate voltage threshold, the source and drain are conductive, allowing current to flow through the pixel unit. When the gate voltage is less than the preset gate voltage threshold, the current between the source and drain is cut off. The current control of each pixel unit and independent sub-pixel partition is independently completed by its corresponding thin-film transistor.
[0027] The storage capacitor is used as a charge retention unit. The storage capacitor holds the charge in the absence of an input signal, allowing the pixel unit to maintain the same display state between refresh cycles. During the display screen display process, the thin film transistor controls the current to flow into the storage capacitor and locks the charge through the storage capacitor. When the row and column scan path moves to the pixel, the thin film transistor is turned on, and the charge in the storage capacitor drives the display screen to emit light. When the row and column scan path ends, the storage capacitor holds the charge until the next row and column scan.
[0028] The thin-film transistor controls the current size of the sub-pixel, so that each sub-pixel unit receives current independently according to the preset brightness or color requirements; the storage capacitor provides the required voltage, and controls the current flow to the display screen through each thin-film transistor to emit corresponding light; the voltage and current of each pixel unit and independent sub-pixel partition are independently controlled through the thin-film transistor and storage capacitor.
[0029] Preferably, the method for constructing a row-column scanning path includes:
[0030] The default display has Rows of pixels, each row of pixels includes sub-pixel partitions, row scanning is controlled by a control signal To control, Indicates the currently selected row. Line, line scanning signal When , the thin film transistor of the row is in the on state, and the current is controlled by the scanning signal;
[0031] In the row and column scanning process, use row-by-row scanning or column-by-column scanning. In the row-by-row scanning process, for the The order of control signals for row and column scan paths is C1, C2, C3, ..., Cn; n represents the total number of control signals; select the column and row scan signals to activate the first The row and column scan signals activate each column in turn, forming a row-by-row scan path;
[0032] Each time the display content is updated, a row and column scan process is required. For displays with different resolutions, the refresh cycle is determined by the complexity of the display content and the screen refresh rate.
[0033] The preset is a quantitative way to express the degree of change of the display content. Indicates the content change of the t-th frame, which is quantified by comparing the pixel differences between two consecutive frames. ;
[0034] Based on the amount of content change on the display , defines the threshold value of the display content change ,when Greater than When the refresh rate is increased ;when Less than or equal to When ; Define the refresh rate adjustment function for the refresh rate Make dynamic adjustments;
[0035] Preset display power consumption ;in, Indicates the power consumption of the display; Represents the proportional constant related to the display hardware characteristics; Indicates the average brightness value of the current display image;
[0036] Consider the proportionality constant of brightness and temperature The proportional constant is adjusted by the proportional constant adjustment formula. Dynamic adjustment design; row scan signals and column scan signals are coordinated through a synchronous clock. During each row activation period, after the row scan signal selects any row, the column scan signal activates the sub-pixel partitions of each column in a preset order, forming a complete row of pixel display content;
[0037] In each row scanning cycle, the column scanning order is from the first column to the During this period, the thin-film transistor of the current row is kept on, so that each sub-pixel partition receives the corresponding current or voltage control signal; when all columns are scanned, the row scan signal switches to the next row, and the column scan signal starts again from the first column, and repeats until all rows are scanned, thus obtaining the row and column scan path.
[0038] Preferably, the image data includes static image files, real-time image data, color space data and thermal imaging image data; the video data includes video streams, video frame data, real-time video data, video compression and decoding data and video metadata.
[0039] Preferably, the method for generating corresponding pixel driving data includes:
[0040] Perform color gamut mapping on image data and video data, and define the initial color gamut to which the image data and video data belong and the target color gamut to be achieved after optimization ,According to the actual color distribution characteristics of image data and video data, the color value of each pixel is processed through a set of dynamically changing color mapping functions to compress or expand the color gamut;
[0041] During the mapping process, the color mapping function is based on the color values of the image data and video data, and is dynamically adjusted according to the local brightness at the current pixel location;
[0042] In response to different display brightness environments and content changes, an adaptive gamma correction function is applied to adaptively adjust the gamma correction curve according to the average brightness changes in the local area of the current frame; the image data and video data after dynamic color mapping and adaptive gamma correction are quantized into pixel drive instructions required by the display to obtain the corresponding pixel drive data.
[0043] Preferably, the method for generating corresponding refresh status data includes:
[0044] Through the image change detection mechanism, the continuous frame image data and video data are compared to determine whether there is a change in the brightness or color value of each pixel unit. If the pixel change amplitude of any pixel unit exceeds the preset pixel change amplitude threshold, the pixel unit is marked as a pixel unit that needs to be refreshed;
[0045] Based on the distribution position of the pixel unit, the corresponding display screen area to be refreshed is determined, and the row and column address range of the display screen area to be refreshed is determined; based on the addressable drive network, the row and column addresses of the pixel units to be refreshed are addressed, and row and column addressing and drive signal loading are performed only on the pixel unit area to be refreshed, thereby performing regional partial refresh;
[0046] According to the spatial distribution of the concentration, density and row and column span information of the pixel unit area that needs to be refreshed, the row and column scanning paths are dynamically adjusted to optimize the refresh efficiency; the row and column addresses, refresh time information and drive load of the pixel units that need to be refreshed in each refresh cycle are recorded to generate corresponding refresh status data.
[0047] Preferably, the method for performing adaptive power consumption management includes:
[0048] By analyzing the brightness, color value, display content changes, and display refresh cycle of each pixel unit using the generated pixel drive data and refresh status data, the operating status of the display screen is determined. After monitoring the operating status of the display screen, the operating parameters of the display screen are dynamically adjusted. Adjusting the operating parameters of the display screen includes adjusting the current and voltage of each pixel unit and sub-pixel partition.
[0049] Automatically adjusts the brightness and color of the display according to the external ambient light intensity. Based on the changes in the display's operating status, combined with real-time pixel drive data and refresh status data, sets the power consumption adjustment mode for adaptive power consumption management; the power consumption adjustment mode includes low power mode, high efficiency mode and local adjustment mode;
[0050] A threshold value for the display content change rate of the preset display screen is set. When the display content change rate of the display screen is less than the preset display content change rate threshold, the system automatically enters a low power consumption mode. When the display content change rate of the display screen is greater than or equal to the preset display content change rate threshold, the system enters a high power consumption mode.
[0051] The local adjustment mode includes a preset display content brightness threshold. For areas where the display content brightness is less than the preset display content brightness threshold, power consumption is reduced by reducing the current and voltage in the area. For areas where the display content brightness is greater than or equal to the preset display content brightness threshold, the current and voltage in the area are increased to increase power consumption, thereby performing adaptive power consumption management.
[0052] Compared with the prior art, the present invention has the following beneficial effects:
[0053] By precisely designing the gate length and source-drain width, the present invention enables thin-film transistors to achieve efficient switching performance. A short gate length accelerates switching speed, improving response time and drive efficiency. Precisely controlling the source-drain width ensures that the thin-film transistor can carry the required current without wasting excess power. This optimized design not only improves the display's response speed but also effectively reduces power consumption, extending the device's battery life.
[0054] By introducing a dynamic proportional constant adjustment mechanism, the present invention can continuously and stably optimize power consumption performance in different environments and different usage modes, achieve environmentally adaptive energy efficiency optimization, and significantly expand the application scope of the system. By utilizing the small-disturbance linearization method, the proportional constant can be dynamically corrected only through a simple linear formula, which can meet higher accuracy requirements in most practical scenarios. This method has extremely low computational overhead, is easy to implement directly in existing hardware, and occupies very little system resources, making it very suitable for lightweight consumer electronic products with high real-time requirements; through more precise and dynamic power consumption adjustment, it effectively reduces unnecessary energy consumption, significantly improves device battery life, and at the same time extends the overall reliable service life of the device by reducing the risk of hardware damage due to overheating.
[0055] Dynamically adjusts gamma sensitivity to avoid large gamma fluctuations caused by small changes in brightness, thereby preventing color distortion and overexposure or overdarkness. It effectively preserves details in both bright and dark areas in high-contrast scenes, preventing overexposure and loss of detail. A smooth gamma response prevents bright spot effects and increased noise caused by small brightness changes. Dynamically adjusts gamma sensitivity based on local brightness differences in the image, enhancing color accuracy and detail. BRIEF DESCRIPTION OF THE DRAWINGS
[0056] Figure 1 This is a schematic structural diagram of the active matrix control system of the glass-based fine-pitch display screen based on AM drive of the present invention;
[0057] Figure 2 A flow chart of a method for generating corresponding refresh status data provided by the present invention;
[0058] Figure 3 The figure is a flow chart of the active matrix control method of the glass-based fine-pitch display screen based on AM drive of the present invention. DETAILED DESCRIPTION
[0059] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0060] Example 1
[0061] See also Figure 1 and Figure 2 As shown, Example 1 further illustrates the active matrix control system of a glass-based fine-pitch display screen based on AM drive proposed by the present invention, including:
[0062] With the continuous advancement of display technology, glass-based fine-pitch displays have been widely used in various display fields due to their superior resolution and high-definition display effects. However, existing display control systems based on active matrix drive (AM drive) still face several technical challenges that need to be addressed to improve display quality, reduce power consumption, and enhance drive efficiency.
[0063] In current thin-film transistor (TFT) design, parameters such as gate length and source / drain width are typically set based on empirical experience or static models. Dynamic optimization based on the current requirements, high-resolution drive requirements, and leakage control targets of different pixel units is impossible. This often results in low drive efficiency, excessive leakage current, or high power consumption. For example, gate length often requires a trade-off between switching speed and leakage current. If gate length cannot be precisely adjusted to display requirements, it can affect the display's response speed and current control accuracy, further impacting display quality and stability.
[0064] Current thin-film transistor designs lack a systematic approach to optimizing wiring layout and routing density. Traditional designs often overlook wiring density and electrical stability, leading to issues such as drive signal interference, increased crosstalk, and unstable electrical connections. Electrical connection stability is particularly crucial in high-resolution displays. Optimizing wiring layout and reducing signal interference are key to improving display performance, but existing technologies have failed to provide effective solutions.
[0065] Existing display driver network architectures typically rely on static layouts or row-column matrix scanning. This fixed scanning approach struggles to meet the flexible addressing requirements of high-resolution, multi-subpixel displays, particularly when faced with complex display control strategies. The inability to dynamically adjust the scan path based on real-time image content leads to redundant refresh operations, wasting power and limiting response speed.
[0066] Current row and column scan paths typically use a fixed row-by-row or column-by-column scanning method, which cannot dynamically reconfigure the scan path based on real-time image content changes. Because this fixed scanning method cannot flexibly adapt to changes in displayed content, it results in inefficient refresh of local areas, potentially requiring unnecessary redundant operations, increasing energy consumption, and reducing response speed. Especially with dynamic content, this inflexible refresh process can cause image smearing, delays, or flickering, impacting the user's visual experience.
[0067] Traditional refresh strategies are typically based on fixed refresh rates or coarse-grained control logic, failing to fine-tune the refresh rate based on the amount of content changing within each frame. With static content, this fixed refresh approach fails to achieve energy savings and still consumes significant power. With dynamic content, the refresh rate may be insufficient, resulting in image artifacts or visual discontinuities, impairing the display quality. Consequently, the inability to flexibly adjust refresh strategies to accommodate the changing demands of different images has become a major bottleneck in existing technologies.
[0068] Traditional color mapping methods typically use fixed color transformation matrices or static lookup tables, which cannot dynamically adjust color saturation and contrast. In areas with rapidly changing brightness or densely detailed areas, images are prone to distortion or loss of detail, affecting the display quality.
[0069] Traditional power consumption control methods mostly use fixed proportional constants for power estimation, making it impossible to dynamically adjust power consumption control strategies to suit the display's actual operating environment. These methods fail to account for real-time changes in factors such as ambient brightness and operating temperature, resulting in low energy efficiency in various environments. For example, in low-brightness environments, the display's power consumption is not fully optimized, while in high-brightness or dynamic scenes, power consumption may be excessively high, impacting the display's battery life and stability.
[0070] In summary, existing technologies in display control system design face numerous challenges, including the static nature of thin-film transistor design, the single nature of the driver network structure, the fixed nature of refresh paths and strategies, and the limitations of color mapping and gamma correction. These issues not only impact display quality and system efficiency, but also hinder the further development of high-resolution, low-power, and high-dynamic-range display technologies.
[0071] In order to effectively solve the above problems, the present invention proposes an active matrix control system for a glass-based fine-pitch display screen based on AM drive, comprising:
[0072] Glass-based pixel array module, used to construct a micro-pixel unit array on a glass substrate, using photolithography and thin film deposition technology to achieve ultra-small pixel pitch layout and integrate independent sub-pixel partitions within each pixel unit;
[0073] The active matrix drive module introduces independent thin-film transistors and storage capacitors on the miniaturized pixel unit array to form an addressable drive network. The independent thin-film transistors serve as active matrix switch units, and the storage capacitors serve as charge retention units. This allows for independent control of the voltage and current of each pixel unit and independent sub-pixel partition, and constructs row and column scan paths.
[0074] The pixel drive generation module receives external input image data and video data, uses dynamic color mapping algorithm and adaptive gamma correction technology to optimize the color performance of image data and video data according to the ultra-small pixel pitch layout, and generates corresponding pixel drive data;
[0075] The dynamic refresh control module, based on the addressable drive network and pixel drive data, performs row and column addressing and data refresh on the changed pixel unit area through the image change detection mechanism, dynamically adjusts the row and column scanning path, and generates corresponding refresh status data;
[0076] The power consumption control management module monitors the operating status of the display screen in real time and adjusts the operating parameters of the display screen based on pixel drive data and refresh status data. It dynamically adjusts the operating current and voltage of each pixel unit and independent sub-pixel partition in combination with changes in the operating status of the display screen to perform adaptive power consumption management.
[0077] Methods for ultra-fine pixel pitch layout include:
[0078] A transparent glass substrate is selected and subjected to ultrasonic and chemical cleaning to remove dirt and impurities from its surface. Thin-film deposition techniques (including chemical vapor deposition, physical vapor deposition, and sputtering deposition) are then used to deposit different functional layers on the glass substrate in accordance with pre-set design requirements. The functional layers include metal electrode layers, oxide dielectric layers, and semiconductor material layers. Pre-set design requirements include requirements for film thickness, material surface properties, and environmental adaptability.
[0079] After the thin film deposition is completed, the surface of the glass substrate is coated with photoresist, and ultraviolet light is used to illuminate the photoresist through a mask; the mask contains a predetermined design pattern of a micro-pixel unit array. After exposure, the photoresist in the unexposed area is partially removed with a developer, leaving the pattern in the exposed area, thereby forming a predetermined design pattern on the glass substrate;
[0080] Depending on the different functional layers, dry etching and wet etching are selected to remove excess materials and retain the required miniature pixel unit array; during the photolithography and thin film deposition process, the miniature pixel unit array is constructed on the glass substrate according to the preset design requirements; the pixel unit spacing threshold is preset, and when the pixel unit spacing is less than or equal to the preset pixel unit spacing, the ultra-small pixel spacing layout is completed.
[0081] Methods for integrating independent sub-pixel partitioning include:
[0082] Based on the ultra-small pixel pitch, sub-pixel partitioning is performed. Based on the preset resolution requirements of the display, the number and layout of sub-pixels required within each pixel unit are determined, and each pixel unit is divided into three sub-pixels, corresponding to the red, green, and blue color channels. The preset resolution requirements of the display include sub-pixel size, arrangement, and distance between sub-pixels. Specifically, the design must consider how to ensure the electrical and optical independence of each sub-pixel under ultra-small pixel pitch conditions to prevent color interference or uneven light transmission. The design also needs to consider the physical size of each sub-pixel to ensure that they adapt to the overall display effect of the display.
[0083] An independent electrode layer is integrated inside each sub-pixel area. Each independent electrode layer controls the current supply of each sub-pixel. An oxide dielectric layer and a semiconductor material layer are integrated inside each sub-pixel. Through the integration of the electrode layer, the oxide dielectric layer and the semiconductor material layer, an independent sub-pixel partition is finally formed inside each pixel unit.
[0084] Methods for forming an addressable drive network include:
[0085] Depositing thin film material on a glass substrate using thin film deposition technology to form a semiconductor layer of a thin film transistor; defining the source, drain, and gate electrode regions of the thin film transistor on the surface of the glass substrate using photolithography technology; and controlling the size and electrode layout of the thin film transistor according to preset thin film transistor design requirements, which include control of the thin film transistor size, control of the electrode layout, and optimization of electrical connections;
[0086] The control of thin film transistor dimensions includes the spacing between the source, drain, and gate of the thin film transistor, the size of the source and drain, and the size of the gate. The control of electrode layout includes the arrangement of the gate and source and drain, and the spacing between the gate electrodes. The arrangement of the gate and source and drain includes linear and staggered layouts. The optimization control of electrical connections includes the layout of connecting wires and the wiring density.
[0087] It's important to note that gate length affects the switching speed and leakage current of thin-film transistors. To ensure stable operation of thin-film transistors in high-resolution displays, the gate length needs to be designed based on the target pixel size and the display's driving requirements. Generally speaking, a shorter gate length can reduce switching time and improve driving efficiency, but it may also increase leakage current. Therefore, the gate length needs to balance the relationship between switching speed and leakage current. The width of the source and drain electrodes affects the conductivity of the thin-film transistor and determines its current-carrying capacity.
[0088] For each pixel unit, the source and drain width must be large enough to ensure that it can drive the required current, but not too large to avoid increasing power consumption and space occupation. Therefore, the source and drain width needs to be precisely selected based on the pixel current requirement and power consumption target. In the design of thin-film transistors, the spacing between the source, drain and gate needs to be controlled very precisely to ensure switching characteristics and current control accuracy. Too large a spacing will affect switching efficiency, and too small a spacing may cause short circuits or excessive leakage current. Therefore, during design, it is necessary to ensure that the distance between the source, drain and gate can minimize current leakage while ensuring sufficient switching performance.
[0089] Each thin-film transistor is paired one-to-one with the corresponding pixel unit or independent sub-pixel partition, and the thin-film transistors are arranged in a parallel or staggered layout; the storage capacitor and the thin-film transistor share a pixel unit area, and the electrode layer and dielectric layer of the storage capacitor are constructed by dry etching or wet etching; through the integration of independent thin-film transistors and storage capacitors, an addressable drive network is formed.
[0090] The method of independently controlling the voltage and current of each pixel unit and independent sub-pixel partition includes:
[0091] Independent thin-film transistors are used as active matrix switching units, with each pixel unit or independent sub-pixel partition assigned an independent thin-film transistor. The switching behavior of the thin-film transistors determines the voltage and current of each pixel unit. The current flow between the source and drain is regulated by the gate control signal in each thin-film transistor. A gate voltage threshold is preset. When the gate voltage is greater than or equal to the preset gate voltage threshold, the source and drain are conductive, allowing current to flow through the pixel unit. When the gate voltage is less than the preset gate voltage threshold, the current between the source and drain is cut off. The current control of each pixel unit and independent sub-pixel partition is independently completed by its corresponding thin-film transistor.
[0092] The storage capacitor is used as a charge retention unit. The storage capacitor holds the charge in the absence of an input signal, allowing the pixel unit to maintain the same display state between refresh cycles. During the display screen display process, the thin film transistor controls the current to flow into the storage capacitor and locks the charge through the storage capacitor. When the row and column scan path moves to the pixel, the thin film transistor is turned on, and the charge in the storage capacitor drives the display screen to emit light. When the row and column scan path ends, the storage capacitor holds the charge until the next row and column scan.
[0093] The thin-film transistor controls the current size of the sub-pixel, so that each sub-pixel unit receives current independently according to the preset brightness or color requirements; the storage capacitor provides the required voltage, and controls the current flow to the display screen through each thin-film transistor to emit corresponding light; the voltage and current of each pixel unit and independent sub-pixel partition are independently controlled through the thin-film transistor and storage capacitor.
[0094] Methods for constructing row and column scan paths include:
[0095] The row and column scan path selects the pixels to be updated row by row and column by column by controlling the voltage and current of the rows and columns. Each pixel unit (and the sub-pixel partitions within it) is independently controlled by a thin-film transistor (TFT) and storage capacitor.
[0096] The preset display has Rows of pixels, each row of pixels includes sub-pixel partitions, row scanning is controlled by a control signal To control, Indicates the currently selected row. Line, line scanning signal When , the thin film transistor of the row is in the on state, and the current is controlled by the scanning signal;
[0097] In the row and column scanning process, use row-by-row scanning or column-by-column scanning. In the row-by-row scanning process, for the The order of control signals for row and column scan paths is C1, C2, C3, ..., Cn; n represents the total number of control signals; select the column and row scan signals to activate the first The row and column scan signals activate each column in turn, forming a row-by-row scan path;
[0098] Each time the display content is updated, a row and column scan process is required. For displays with different resolutions, the refresh cycle is determined by the complexity of the display content and the screen refresh rate.
[0099] The preset is a quantitative way to express the degree of change of the display content. Indicates the content change of the t-th frame, which is quantified by comparing the pixel differences between two consecutive frames. ; ;in, Indicates the number of rows of pixels on the display screen; Indicates the number of columns of display pixels; Indicates the Frame image in the Rank The pixel value of the column; Indicates the Frame image in the Rank The pixel value of the column; The index representing the frame number;
[0100] if A higher value indicates that the displayed content changes significantly and a higher refresh rate may be required; if A lower refresh rate indicates that the displayed content changes less, so the refresh rate can be reduced. The refresh rate needs to match the display resolution to avoid image delay, streaking, or flickering. On high-resolution displays, if the refresh rate is insufficient, image updates may lag, resulting in unsatisfactory display effects and streaking, affecting the user experience. Increasing the refresh rate means increasing the frequency of data transmission and display updates, resulting in increased power consumption.
[0101] To address this issue, the display's refresh rate is adjusted in real time based on changes in the displayed content, ensuring a match between refresh rate and resolution. When the displayed content doesn't change much, a low refresh rate is sufficient. However, if the displayed content changes rapidly (such as when playing a video or playing a high-frame-rate game), a higher refresh rate is required to ensure smooth image display. Dynamically adjusting the refresh rate avoids the mismatch between refresh rate and resolution and optimizes the display quality.
[0102] Based on the amount of content change on the display , defines the threshold value of the display content change ,when Greater than When the refresh rate is increased ;when Less than or equal to When ; Define the refresh rate adjustment function for the refresh rate Perform dynamic adjustment; the refresh rate adjustment function is ;in, Indicates that the display is The refresh rate of the frame; Indicates the preset maximum refresh rate; Indicates the preset minimum refresh rate;
[0103] It should be noted that the refresh rate of the display Must be consistent with resolution Match, especially at high resolution, the refresh rate needs to be high enough to ensure smooth image display; the relationship between the refresh cycle and the refresh rate is ; Indicates the time each frame is displayed; on a high-resolution display, the refresh cycle is required to be short enough so that each pixel can be updated quickly. The preset display resolution is , then the number of pixels updated per second is ; If the image content changes significantly ( high), more pixel updates are required, which means Need to be increased; if the content changes slightly ( Low), the update frequency can be reduced to save power;
[0104] An important goal of dynamic refresh rate is to reduce unnecessary power consumption. In the case of static content, a lower refresh rate will help save power, while in the case of dynamic content, the refresh rate needs to be increased to ensure smooth display.
[0105] Preset display power consumption ;in, Indicates the power consumption of the display; Represents the proportional constant related to the display hardware characteristics; Indicates the average brightness value of the current display image;
[0106] For still images, Lower, the system can reduce the refresh rate To save power consumption; for dynamic video or high frame rate images, Higher refresh rate It needs to be increased to ensure smooth display; many display power management methods use static or preset power consumption models, which usually assume that the display operates under certain fixed environmental conditions, without considering the dynamic changes in brightness and temperature during actual use. This leads to inaccurate power consumption predictions, and may cause problems such as over-calculation or under-calculation of power consumption in high-brightness or high-temperature environments. When displaying static images, the system may maintain a high refresh rate or brightness, which will lead to unnecessary energy consumption. In high-temperature environments, the hardware may consume excessive power, even affecting the stability and service life of the hardware. Without a dynamic adjustment mechanism, the display cannot minimize power consumption while ensuring display quality.
[0107] Consider the proportionality constant of brightness and temperature The proportional constant is adjusted by the proportional constant adjustment formula. Perform dynamic adjustment design, and the proportional constant adjustment formula is: ;in, Represents the proportional constant after dynamic adjustment; Indicates the brightness sensitivity coefficient. According to the expert experience method, The value range is between 0 and 1; Indicates the temperature sensitivity coefficient. According to the expert experience method, The value range of is between 0 and 1, and and The sum is 1; Indicates the average temperature of the current display image;
[0108] It's important to note that in engineering practice, hardware characteristics (such as backlight type and display driver circuit efficiency) are often not fixed but are affected by external environmental factors (such as brightness and temperature). Therefore, dynamically adjusting the proportional constant is a reasonable design option. It allows the display to automatically optimize power consumption calculations based on environmental changes (brightness and temperature), improving the system's adaptability to different scenarios. The proportional constant adjustment formula is designed based on the principle of small-disturbance linear approximation. By assuming that power consumption responds linearly to these inputs within a small range of brightness and temperature variations, the linear approximation effectively reduces the system's computational complexity and allows for real-time dynamic adjustments to optimize power consumption.
[0109] Advantageous effects compared to existing technologies: By introducing a dynamic proportional constant adjustment mechanism, the present invention can continuously and stably optimize power consumption performance in different environments (high brightness, high temperature, low temperature, etc.) and different usage modes (static images, dynamic videos, high frame rate displays), achieve environmentally adaptive energy efficiency optimization, and significantly expand the application scope of the system. By utilizing the small perturbation linearization method, the proportional constant can be dynamically corrected only through a simple linear formula, which can meet higher accuracy requirements in most practical scenarios. This method has extremely low computational overhead and is easy to implement directly in existing hardware (such as display control chips, MCUs). It also takes up very little system resources and is very suitable for lightweight consumer electronic products with high real-time requirements. Through more precise and dynamic power consumption adjustment, it effectively reduces unnecessary energy consumption and significantly improves the battery life of the device. At the same time, by reducing the risk of hardware damage caused by overheating, the overall reliable service life of the device is extended.
[0110] The row scan signal and column scan signal are coordinated by a synchronous clock. During each row activation period, after the row scan signal selects any row, the column scan signal activates the sub-pixel partitions of each column in a preset order to form a complete row of pixel display content.
[0111] In each row scanning cycle, the column scanning order is from the first column to the During this period, the thin-film transistor of the current row is kept on, so that each sub-pixel partition receives the corresponding current or voltage control signal; when all columns are scanned, the row scan signal switches to the next row, and the column scan signal starts again from the first column, and repeats until all rows are scanned, thus obtaining the row and column scan path.
[0112] Image data includes static image files, real-time image data, color space data and thermal imaging image data; video data includes video streams, video frame data, real-time video data, video compression and decoding data and video metadata.
[0113] The method for generating corresponding pixel drive data includes:
[0114] Perform color gamut mapping on image data and video data, and define the initial color gamut to which the image data and video data belong and the target color gamut to be achieved after optimization ,According to the actual color distribution characteristics of image data and video data, the color value of each pixel is processed through a set of dynamically changing color mapping functions to compress or expand the color gamut;
[0115] During the mapping process, the color mapping function is based on the color values of the image data and video data, and is dynamically adjusted according to the local brightness at the current pixel position; the color mapping function is ;in, Indicates the color value at the current pixel position; Represents the color scaling factor, which controls the amplification or reduction of the color values of image data and video data. The coefficient is dynamically adjusted according to the local brightness of the pixel; Indicates the amount of color shift due to brightness differences; Indicates the local brightness at the current pixel position;
[0116] Ultra-fine pixel pitches create denser image details, placing higher demands on color accuracy and local contrast. This requires dynamic adjustment of the color gamut mapping. Dynamically adjusting the color scaling and offset of each pixel based on local brightness ensures richer colors and more prominent details at ultra-fine pixel pitches. ;in, Represents the scaling factor related to brightness changes, controlling the effect of brightness changes on color scaling; ;in, Represents the offset coefficient related to brightness difference, controlling the effect of brightness change on color offset;
[0117] In response to different display brightness environments and content changes, an adaptive gamma correction function is applied. According to the average brightness changes of the local area of the current frame, the gamma correction curve is adaptively adjusted to improve the highlights and dark details of the display. The adaptive gamma correction function is ;in, Indicates the gamma value after adaptive adjustment; Indicates the base gamma value; Indicates the gamma adjustment sensitivity coefficient, which controls the magnitude of gamma adjustment due to local brightness changes; Indicates the preset reference brightness, which is used to define the neutral brightness level. It is usually set near the middle gray scale, which is the position that the human eye perceives as neither too dark nor too bright.
[0118] However, if the gamma adjustment sensitivity coefficient is fixed too large, the gamma value will fluctuate greatly when the brightness changes slightly; the image may be over-enhanced or too dark / bright in parts, causing color distortion, increased noise or a "bright spot" effect. The gamma response of the bright and dark parts of the image is inconsistent, which may cause loss of details in dark areas or "overexposure" in bright areas, especially in high-contrast scenes. The gamma curve fails to match the actual brightness requirements, and the display current or voltage control is inaccurate, resulting in large fluctuations in power consumption and brightness correction failure, which may exceed the hardware safety range.
[0119] In order to solve the above problems, the gamma adjustment sensitivity coefficient is adjusted by introducing a dynamic gamma adjustment formula. The dynamic gamma adjustment formula is: ;in, Indicates the preset maximum gamma adjustment sensitivity coefficient; Indicates the maximum value of the difference between the local brightness of all pixels and the reference brightness;
[0120] The dynamic gamma adjustment formula is designed based on the following theories and principles: Gamma correction has a nonlinear relationship with brightness. Gamma correction is used to adjust the display device's response to brightness to better match the human eye's perception. The human eye's response to brightness changes is nonlinear, so a gamma curve is used to achieve smoother brightness mapping. The relationship between the gamma adjustment sensitivity coefficient and brightness changes is also nonlinear. If the gamma adjustment sensitivity coefficient is too large, even slight changes in brightness can cause significant color fluctuations, resulting in uneven image brightness. Therefore, the sensitivity coefficient needs to be dynamically adjusted based on actual brightness changes. This design avoids over-enhancement or over-brightness / over-darkness that can result from a fixed gamma adjustment sensitivity coefficient. Especially in high-contrast scenes, by taking into account the maximum brightness difference, brightness changes can be smoothed, ensuring consistent visual quality across all parts of the image.
[0121] Compared to existing technologies, this technology offers the following advantages: It dynamically adjusts the gamma sensitivity coefficient to avoid large gamma fluctuations caused by small changes in brightness, thereby preventing color distortion and overexposure or overdarkness. It effectively preserves details in both bright and dark areas in high-contrast scenes, preventing overexposure and loss of detail. Its smooth gamma response prevents the bright spot effect and increased noise caused by small brightness changes. Dynamically adjusting gamma sensitivity based on local brightness differences in the image improves color accuracy and detail.
[0122] The image data and video data after dynamic color mapping and adaptive gamma correction are quantized into pixel driving instructions required by the display screen to obtain corresponding pixel driving data.
[0123] The method for generating corresponding refresh status data includes:
[0124] Through the image change detection mechanism, the continuous frame image data and video data are compared to determine whether there is a change in the brightness or color value of each pixel unit. If the pixel change amplitude of any pixel unit exceeds the preset pixel change amplitude threshold, the pixel unit is marked as a pixel unit that needs to be refreshed;
[0125] Based on the distribution position of the pixel unit, the corresponding display screen area to be refreshed is determined, and the row and column address range of the display screen area to be refreshed is determined; based on the addressable drive network, the row and column addresses of the pixel units to be refreshed are addressed, and row and column addressing and drive signal loading are performed only on the pixel unit area to be refreshed, thereby performing regional partial refresh;
[0126] According to the spatial distribution of the concentration, density and row and column span information of the pixel unit area that needs to be refreshed, the row and column scanning path is dynamically adjusted. The adjustment of the row and column scanning path includes jump scanning, non-continuous scanning and multi-segment parallel scanning methods to optimize the refresh efficiency; the row and column addresses, refresh time information and drive load of the pixel units that need to be refreshed in each refresh cycle are recorded to generate corresponding refresh status data.
[0127] Methods for adaptive power management include:
[0128] By analyzing the brightness, color value, display content changes, and display refresh cycle of each pixel unit using the generated pixel drive data and refresh status data, the operating status of the display screen is determined. After monitoring the operating status of the display screen, the operating parameters of the display screen are dynamically adjusted. Adjusting the operating parameters of the display screen includes adjusting the current and voltage of each pixel unit and sub-pixel partition.
[0129] Automatically adjusts the brightness and color of the display according to the external ambient light intensity. Based on the changes in the display's operating status, combined with real-time pixel drive data and refresh status data, sets the power consumption adjustment mode for adaptive power consumption management; the power consumption adjustment mode includes low power mode, high efficiency mode and local adjustment mode;
[0130] A threshold value for the display content change rate of the preset display screen is set. When the display content change rate of the display screen is less than the preset display content change rate threshold, the system automatically enters a low power consumption mode. When the display content change rate of the display screen is greater than or equal to the preset display content change rate threshold, the system enters a high power consumption mode.
[0131] The local adjustment mode includes a preset display content brightness threshold. For areas where the display content brightness is less than the preset display content brightness threshold, power consumption is reduced by reducing the current and voltage in the area. For areas where the display content brightness is greater than or equal to the preset display content brightness threshold, the current and voltage in the area are increased to increase power consumption, thereby performing adaptive power consumption management.
[0132] The preset pixel unit spacing threshold is set by the staff. By collecting different pixel unit spacings, the average value of multiple pixel unit spacings is taken as the preset pixel unit spacing threshold; similarly, the preset gate voltage threshold, the display content change threshold, the preset pixel change amplitude threshold and the preset display content change rate threshold are set.
[0133] In this embodiment, by precisely designing the gate length and source-drain width, the thin-film transistor achieves efficient switching performance. A short gate length accelerates switching speed, improving response time and drive efficiency. Precisely controlling the source-drain width ensures that the thin-film transistor can carry the required current without wasting additional power. This optimized design not only improves the display's response speed but also effectively reduces power consumption, extending the device's battery life.
[0134] By introducing a dynamic proportional constant adjustment mechanism, the present invention can continuously and stably optimize power consumption performance in different environments and different usage modes, achieve environmentally adaptive energy efficiency optimization, and significantly expand the application scope of the system. By utilizing the small-disturbance linearization method, the proportional constant can be dynamically corrected only through a simple linear formula, which can meet higher accuracy requirements in most practical scenarios. This method has extremely low computational overhead, is easy to implement directly in existing hardware, and occupies very little system resources, making it very suitable for lightweight consumer electronic products with high real-time requirements; through more precise and dynamic power consumption adjustment, it effectively reduces unnecessary energy consumption, significantly improves device battery life, and at the same time extends the overall reliable service life of the device by reducing the risk of hardware damage due to overheating.
[0135] Dynamically adjusts gamma sensitivity to avoid large gamma fluctuations caused by small changes in brightness, thereby preventing color distortion and overexposure or overdarkness. It effectively preserves details in both bright and dark areas in high-contrast scenes, preventing overexposure and loss of detail. A smooth gamma response prevents bright spot effects and increased noise caused by small brightness changes. Dynamically adjusts gamma sensitivity based on local brightness differences in the image, enhancing color accuracy and detail.
[0136] Example 2
[0137] See also Figure 3 As shown, for the parts not described in detail in this embodiment, please refer to the description of Example 1. A method for controlling an active matrix of a glass-based fine-pitch display screen based on AM drive is provided, comprising:
[0138] S1. Construct a micro-pixel unit array on a glass substrate, using photolithography and thin film deposition technology to achieve ultra-small pixel pitch layout, and integrate independent sub-pixel partitions within each pixel unit;
[0139] S2. Introducing independent thin-film transistors and storage capacitors on the miniaturized pixel unit array to form an addressable drive network; using the independent thin-film transistors as active matrix switch units and the storage capacitors as charge retention units, independently controlling the voltage and current of each pixel unit and independent sub-pixel partition, and constructing row and column scanning paths;
[0140] S3, receiving external input image data and video data, using dynamic color mapping algorithm and adaptive gamma correction technology to optimize the color performance of the image data and video data according to the ultra-small pixel pitch layout, and generating corresponding pixel drive data;
[0141] S4. Based on the addressable drive network and pixel drive data, through the image change detection mechanism, row and column addressing and data refresh are performed on the changed pixel unit area, the row and column scanning paths are dynamically adjusted, and corresponding refresh status data is generated;
[0142] S5. Based on pixel drive data and refresh status data, monitor the operating status of the display screen in real time and adjust the operating parameters of the display screen; combined with the changes in the operating status of the display screen, dynamically adjust the operating current and voltage of each pixel unit and independent sub-pixel partition to perform adaptive power consumption management.
[0143] Since the electronic device introduced in this embodiment is an electronic device used to implement the active matrix control system of the glass-based fine-pitch display screen based on AM drive in the embodiment of this application, based on the active matrix control system of the glass-based fine-pitch display screen based on AM drive introduced in the embodiment of this application, those skilled in the art can understand the specific implementation of the electronic device of this embodiment and its various variations, so how the electronic device implements the method in the embodiment of this application will not be described in detail here. As long as those skilled in the art implement the electronic device used in the active matrix control system of the glass-based fine-pitch display screen based on AM drive in the embodiment of this application, it falls within the scope of protection of this application.
[0144] The above formulas are all dimensionless and numerical calculations. The formulas are obtained by collecting a large amount of data and performing software simulation to obtain the most recent real situation. The preset parameters and thresholds in the formulas are set by technicians in this field according to actual conditions.
[0145] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the principles of the present invention are within the scope of protection of the present invention. It should be noted that for users of ordinary skill in the art, various improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.
Claims
1. The active matrix control system of glass-based fine-pitch display screen based on AM drive is characterized by: include: Glass-based pixel array module, used to construct pixel unit arrays on a glass substrate, using photolithography and thin film deposition technology to layout pixel pitch and integrate independent sub-pixel partitions within each pixel unit; Active matrix drive module, which introduces independent thin film transistors and storage capacitors on the pixel unit array to form an addressable drive network; Using independent thin-film transistors as active matrix switch units and storage capacitors as charge retention units, the voltage and current of each pixel unit and independent sub-pixel partition are independently controlled, and row and column scanning paths are constructed; The pixel drive generation module receives external input image data and video data, uses dynamic color mapping algorithm and adaptive gamma correction technology to optimize the color performance of image data and video data according to the pixel pitch layout, and generates corresponding pixel drive data; The method for generating corresponding pixel driving data includes: Perform color gamut mapping on image data and video data, and define the initial color gamut to which the image data and video data belong and the target color gamut to be achieved after optimization ,According to the actual color distribution characteristics of image data and video data, the color value of each pixel is processed through a set of dynamically changing color mapping functions to compress or expand the color gamut; During the mapping process, the color mapping function is based on the color values of the image data and video data, and is dynamically adjusted according to the local brightness at the current pixel position; the color mapping function is ;in, Indicates the color value at the current pixel position; Indicates the color scaling factor; Indicates the amount of color shift due to brightness differences; Indicates the local brightness at the current pixel position; ;in, represents the scaling factor associated with brightness changes, ;in, represents the offset coefficient related to the brightness difference, Indicates the average brightness value of the current display image; In response to changes in display brightness environments and content, an adaptive gamma correction function is applied to adaptively adjust the gamma correction curve based on the average brightness changes in the local area of the current frame. The image data and video data after dynamic color mapping and adaptive gamma correction are quantized into the pixel drive instructions required by the display to obtain the corresponding pixel drive data. Among them, the adaptive gamma correction function is ; Indicates the gamma value after adaptive adjustment; Indicates the base gamma value; represents the gamma adjustment sensitivity coefficient, Represents the preset reference brightness, and the dynamic gamma adjustment formula is ;in, Indicates the preset maximum gamma adjustment sensitivity coefficient; Indicates the maximum value of the difference between the local brightness of all pixels and the reference brightness; The dynamic refresh control module, based on the addressable drive network and pixel drive data, performs row and column addressing and data refresh on the changed pixel unit area through the image change detection mechanism, dynamically adjusts the row and column scanning path, and generates corresponding refresh status data; The power consumption control management module monitors the operating status of the display screen in real time and adjusts the operating parameters of the display screen based on pixel drive data and refresh status data. It dynamically adjusts the operating current and voltage of each pixel unit and independent sub-pixel partition in combination with changes in the operating status of the display screen to perform adaptive power consumption management.
2. The active matrix control system for a glass-based fine-pitch display screen based on AM drive according to claim 1, characterized in that: The method for performing pixel pitch layout includes: A transparent glass substrate is selected and subjected to ultrasonic and chemical cleaning to remove dirt and impurities from the surface of the glass substrate. Thin film deposition technology is then used to deposit different functional layers on the glass substrate according to preset design requirements. The functional layers include metal electrode layers, oxide dielectric layers, and semiconductor material layers. The preset design requirements include film thickness requirements, material surface characteristics requirements, and environmental adaptability requirements. After the thin film deposition is completed, the surface of the glass substrate is coated with photoresist, and ultraviolet light is used to irradiate the photoresist through a mask; the mask contains a predetermined design pattern of the pixel unit array. After exposure, the photoresist in the unexposed area is partially removed by a developer, leaving the pattern in the exposed area, thereby forming a predetermined design pattern on the glass substrate; Depending on the different functional layers, dry etching and wet etching are selected to remove excess materials and retain the required pixel unit array; during the photolithography and thin film deposition process, the pixel unit array is constructed on the glass substrate according to the preset design requirements; a pixel unit spacing threshold is preset, and when the pixel unit spacing is less than or equal to the preset pixel unit spacing, the pixel spacing layout is completed.
3. The active matrix control system for a glass-based fine-pitch display screen based on AM drive according to claim 2, characterized in that: The method for integrating independent sub-pixel partitioning includes: Based on the pixel pitch, sub-pixel partitioning is performed. The number and layout of sub-pixels required within each pixel unit are determined according to the preset resolution requirements of the display. Each pixel unit is divided into three sub-pixels, corresponding to the red, green, and blue color channels respectively. The preset resolution requirements of the display include sub-pixel size, arrangement, and distance between sub-pixels. An independent electrode layer is integrated inside each sub-pixel area. Each independent electrode layer controls the current supply of each sub-pixel. An oxide dielectric layer and a semiconductor material layer are integrated inside each sub-pixel. Through the integration of the electrode layer, the oxide dielectric layer and the semiconductor material layer, an independent sub-pixel partition is finally formed inside each pixel unit.
4. The active matrix control system for a glass-based fine-pitch display screen based on AM drive according to claim 3, characterized in that: The method for forming an addressable drive network comprises: Depositing thin film material on a glass substrate using thin film deposition technology to form a semiconductor layer of a thin film transistor; defining the source, drain, and gate electrode regions of the thin film transistor on the surface of the glass substrate using photolithography technology; and controlling the size and electrode layout of the thin film transistor according to preset thin film transistor design requirements, which include control of the thin film transistor size, control of the electrode layout, and optimization of electrical connections; The control of thin film transistor dimensions includes the spacing between the source, drain, and gate of the thin film transistor, the size of the source and drain, and the size of the gate. The control of electrode layout includes the arrangement of the gate and source and drain, and the spacing between the gate electrodes. The arrangement of the gate and source and drain includes linear and staggered layouts. The optimization control of electrical connections includes the layout of connecting wires and the wiring density. Each thin-film transistor is paired one-to-one with the corresponding pixel unit or independent sub-pixel partition, and the thin-film transistors are arranged in a parallel or staggered layout; the storage capacitor and the thin-film transistor share a pixel unit area, and the electrode layer and dielectric layer of the storage capacitor are constructed by dry etching or wet etching; through the integration of independent thin-film transistors and storage capacitors, an addressable drive network is formed.
5. The active matrix control system for a glass-based fine-pitch display screen based on AM drive according to claim 4, characterized in that: The method for independently controlling the voltage and current of each pixel unit and independent sub-pixel partition includes: Independent thin-film transistors are used as active matrix switching units, with each pixel unit or independent sub-pixel partition assigned an independent thin-film transistor. The switching behavior of the thin-film transistors determines the voltage and current of each pixel unit. The current flow between the source and drain is regulated by the gate control signal in each thin-film transistor. A gate voltage threshold is preset. When the gate voltage is greater than or equal to the preset gate voltage threshold, the source and drain are conductive, allowing current to flow through the pixel unit. When the gate voltage is less than the preset gate voltage threshold, the current between the source and drain is cut off. The current control of each pixel unit and independent sub-pixel partition is independently completed by its corresponding thin-film transistor. The storage capacitor is used as a charge retention unit. The storage capacitor holds the charge in the absence of an input signal, allowing the pixel unit to maintain the same display state between refresh cycles. During the display screen display process, the thin film transistor controls the current to flow into the storage capacitor and locks the charge through the storage capacitor. When the row and column scan path moves to the pixel, the thin film transistor is turned on, and the charge in the storage capacitor drives the display screen to emit light. When the row and column scan path ends, the storage capacitor holds the charge until the next row and column scan. The thin-film transistor controls the current size of the sub-pixel, so that each sub-pixel unit receives current independently according to the preset brightness or color requirements; the storage capacitor provides the required voltage, and controls the current flow to the display screen through each thin-film transistor to emit corresponding light; the voltage and current of each pixel unit and independent sub-pixel partition are independently controlled through the thin-film transistor and storage capacitor.
6. The active matrix control system for a glass-based fine-pitch display screen based on AM drive according to claim 5, characterized in that: The method for constructing row and column scanning paths includes: The preset display has Rows of pixels, each row of pixels includes sub-pixel partitions, row scanning is controlled by a control signal To control, Indicates the currently selected row. Line, line scanning signal When , the thin film transistor of the row is in the on state, and the current is controlled by the scanning signal; In the row and column scanning process, use row-by-row scanning or column-by-column scanning. In the row-by-row scanning process, for the The order of control signals for row and column scan paths is C1, C2, C3, ..., Cn; n represents the total number of control signals; select the column and row scan signals to activate the first The row and column scan signals activate each column in turn, forming a row-by-row scan path; Each time the display content is updated, a row and column scan process is required. For displays with different resolutions, the refresh cycle is determined by the complexity of the display content and the screen refresh rate. The preset is a quantitative way to express the degree of change of the display content. Indicates the content change of the t-th frame, which is quantified by comparing the pixel differences between two consecutive frames. ; Based on the amount of content change on the display , defines the threshold value of the display content change ,when Greater than When the refresh rate is increased ;when Less than or equal to When ; Define the refresh rate adjustment function for the refresh rate Make dynamic adjustments; Preset display power consumption ;in, Indicates the power consumption of the display; Represents the proportional constant related to the display hardware characteristics; Indicates the average brightness value of the current display image; Consider the proportionality constant of brightness and temperature The proportional constant is adjusted by the proportional constant adjustment formula. Dynamic adjustment design; row scan signals and column scan signals are coordinated through a synchronous clock. During each row activation period, after the row scan signal selects any row, the column scan signal activates the sub-pixel partitions of each column in a preset order, forming a complete row of pixel display content; In each row scanning cycle, the column scanning order is from the first column to the During this period, the thin-film transistor of the current row is kept on, so that each sub-pixel partition receives the corresponding current or voltage control signal; when all columns are scanned, the row scan signal switches to the next row, and the column scan signal starts again from the first column, and repeats until all rows are scanned, thus obtaining the row and column scan path.
7. The active matrix control system for a glass-based fine-pitch display screen based on AM drive according to claim 6, characterized in that: The image data includes static image files, real-time image data, color space data and thermal imaging image data; the video data includes video streams, video frame data, real-time video data, video compression and decoding data and video metadata.
8. The active matrix control system for a glass-based fine-pitch display screen based on AM drive according to claim 7, characterized in that: The method for generating corresponding refresh status data includes: Through the image change detection mechanism, the continuous frame image data and video data are compared to determine whether there is a change in the brightness or color value of each pixel unit. If the pixel change amplitude of any pixel unit exceeds the preset pixel change amplitude threshold, the pixel unit is marked as a pixel unit that needs to be refreshed; Based on the distribution position of the pixel unit, the corresponding display screen area to be refreshed is determined, and the row and column address range of the display screen area to be refreshed is determined; based on the addressable drive network, the row and column addresses of the pixel units to be refreshed are addressed, and row and column addressing and drive signal loading are performed only on the pixel unit area to be refreshed, thereby performing regional partial refresh; According to the spatial distribution of the concentration, density and row and column span information of the pixel unit area that needs to be refreshed, the row and column scanning paths are dynamically adjusted to optimize the refresh efficiency; the row and column addresses, refresh time information and drive load of the pixel units that need to be refreshed in each refresh cycle are recorded to generate corresponding refresh status data.
9. The active matrix control system for a glass-based fine-pitch display screen based on AM drive according to claim 8, characterized in that: The method for performing adaptive power consumption management includes: By analyzing the brightness, color value, display content changes, and display refresh cycle of each pixel unit using the generated pixel drive data and refresh status data, the operating status of the display screen is determined. After monitoring the operating status of the display screen, the operating parameters of the display screen are dynamically adjusted. Adjusting the operating parameters of the display screen includes adjusting the current and voltage of each pixel unit and sub-pixel partition. Automatically adjusts the brightness and color of the display according to the external ambient light intensity. Based on the changes in the display's operating status, combined with real-time pixel drive data and refresh status data, sets the power consumption adjustment mode for adaptive power consumption management; the power consumption adjustment mode includes low power mode, high efficiency mode and local adjustment mode; A threshold value for the display content change rate of the preset display screen is set. When the display content change rate of the display screen is less than the preset display content change rate threshold, the system automatically enters a low power consumption mode. When the display content change rate of the display screen is greater than or equal to the preset display content change rate threshold, the system enters a high power consumption mode. The local adjustment mode includes a preset display content brightness threshold. For areas where the display content brightness is less than the preset display content brightness threshold, power consumption is reduced by reducing the current and voltage in the area. For areas where the display content brightness is greater than or equal to the preset display content brightness threshold, the current and voltage in the area are increased to increase power consumption, thereby performing adaptive power consumption management.
Citation Information
Patent Citations
Display screen touch point adjustment control method and system
CN111562855A
Active matrix type multistable displayer and driving method of display panel
CN103165063A
Dynamic contrast quantification method, device and equipment and readable storage medium
CN114067616A