Display apparatus and driving method therefor

Abstract

A driving method for a display apparatus (100). The driving method comprises: step S02, providing a display apparatus (100) that includes a display (110) and a controller (120); step S04, by means of the controller (120), acquiring operating temperatures corresponding to a plurality of display panels (12,14,16) of the display (110); step S06, by means of the controller (120), setting a plurality of parameters corresponding to a plurality of temperatures, wherein the plurality of parameters are independent of each other and correspond to the plurality of display panels (12,14,16), and the plurality of temperatures are different from each other and form a parameter set together with the plurality of parameters; and step S08, by means of the controller (120) and on the basis of the operating temperatures, selecting, from the parameter set, parameters corresponding to one of the plurality of temperatures, so as to drive the display panels (12,14,16).

Description

Display device and its driving method Technical Field

[0001] This invention relates to a display device and its driving method, and particularly to a display device and its driving method that can set independent driving parameters according to different liquid crystal characteristics. Background Technology

[0002] A typical LCD color panel module contains panels of different colors, each with unique optical material properties. Driving it using only single time and voltage parameters can lead to the side effect of conflicting color characteristic curves, failing to deliver optimal optical and sensory performance. Therefore, the market currently lacks a display device and driving method that can set independent driving parameters based on different LCD characteristics, and related manufacturers are actively seeking solutions. Summary of the Invention

[0003] Therefore, the purpose of this invention is to provide a display device and its driving method, which sets independent driving parameters according to different liquid crystal characteristics to adaptively and independently drive display panels of different colors, thereby achieving better optical and sensory performance and solving the side effect problem of inconsistent color characteristic curves in the prior art.

[0004] According to one embodiment of the present invention, a display device is provided, comprising a display and a controller. The display includes a plurality of display panels, each displaying a plurality of colors, which are distinct from each other. The controller is electrically connected to the display, and obtains an operating temperature corresponding to each of the display panels, and sets a plurality of parameters corresponding to the plurality of temperatures. These parameters are independent of each other and correspond to the plurality of display panels, the temperatures are distinct from each other, and the temperatures and these parameters form a parameter set. The operating temperature corresponds to one of the temperatures, and the controller selects a portion of the parameters corresponding to that temperature from the parameter set to drive the display panels based on the operating temperature.

[0005] Other embodiments of the aforementioned implementation are as follows: the aforementioned operating temperature is one of an ambient temperature around these display panels and a panel temperature of these display panels.

[0006] Other embodiments of the aforementioned implementation are as follows: The aforementioned display device further includes a temperature sensor, which is disposed corresponding to the display and electrically connected to the controller. The temperature sensor is used to acquire the operating temperature and transmit the operating temperature to the controller.

[0007] Other embodiments of the foregoing implementation are as follows: any of the aforementioned display panels is a cholesteric liquid crystal panel, and the colors include a blue, a green and a red.

[0008] Other embodiments of the aforementioned implementation are as follows: The aforementioned parameters include multiple cycle times, multiple cycle numbers, and multiple driving voltage differences, one of these cycle times, one of these cycle numbers, and one of these driving voltage differences correspond to one of these temperatures and one of these colors.

[0009] Other embodiments of the aforementioned implementation are as follows: The aforementioned display has a screen with multiple scan lines. The controller acquires a full page scan operation time interval and drives these scan lines of the screen according to a start time asynchrony condition within the full page scan operation time interval. The start time asynchrony condition includes multiple start time asynchronies corresponding to a portion of these drive voltage differences at these temperatures.

[0010] Other embodiments of the aforementioned implementation are as follows: The aforementioned controller performs the following operations during the full-page scanning operation time interval: executes a scan line driving operation, which includes driving the display panels based on a portion of the cycle time, a portion of the cycle number, and a portion of the driving voltage difference corresponding to these temperatures, to complete the driving of one of the scan lines of the image; and confirms whether the driving of all these scan lines of the image has been completed, generating a confirmation result, and determining, based on the confirmation result, whether to execute multiple scan line driving operations corresponding to the remaining portion of these scan lines or to execute a driving voltage difference zeroing operation. The driving voltage difference zeroing operation includes setting at least one of the driving voltage differences to 0.

[0011] Other embodiments of the aforementioned implementation are as follows: The aforementioned display has a screen with multiple scan lines. The controller acquires a full page scan operation time interval and drives these scan lines of the screen according to a start time synchronization condition within the full page scan operation time interval. The start time synchronization condition includes multiple start time synchronizations corresponding to a portion of these drive voltage differences at these temperatures.

[0012] Other embodiments of the aforementioned implementation are as follows: The aforementioned controller obtains a preset time interval and performs the following operations within the full-page scanning operation time interval: Performing a scan line driving operation, the scan line driving operation including: driving the display panels according to a portion of the cycle time, a portion of the cycle number, and a portion of the driving voltage difference corresponding to the temperature, to complete the driving of one of the scan lines of the image; and when the driving of all the display panels of the colors on the scan lines of the image is completed, performing a driving voltage difference zeroing operation within the preset time interval; and confirming whether the driving of all the scan lines of the image is completed and generating a confirmation result, and determining whether to perform multiple scan line driving operations corresponding to the remaining portion of the scan lines or to perform a driving voltage difference zeroing operation based on the confirmation result. The driving voltage difference zeroing operation includes setting at least one of the driving voltage differences to 0.

[0013] Other embodiments of the aforementioned implementation are as follows: The aforementioned controller performs the following operations during the full-page scanning operation time interval: executes a scan line driving operation, which includes driving the display panels according to a portion of the cycle time, a portion of the cycle number, and a portion of the driving voltage difference corresponding to the corresponding temperatures, to complete the driving of one of the scan lines of the image; and when the driving of all the display panels of the corresponding colors on the image's scan lines is completed, confirms whether the driving of all the scan lines of the image is completed and generates a confirmation result, and decides, based on the confirmation result, whether to execute multiple scan line driving operations corresponding to the remaining portion of the scan lines or to execute a driving voltage difference zeroing operation. The driving voltage difference zeroing operation includes setting at least one of the driving voltage differences to 0.

[0014] According to one embodiment of the present invention, a driving method for a display device is provided, comprising: providing a display device, wherein the display device includes a display and a controller; obtaining an operating temperature of a plurality of display panels corresponding to the display via the controller; setting a plurality of parameters corresponding to the plurality of temperatures via the controller, wherein these parameters are independent of each other and correspond to the plurality of display panels, the temperatures are different from each other, and the temperatures and these parameters form a parameter group; and driving the plurality of display panels by selecting a portion of the parameters corresponding to one of the temperatures from the parameter group based on the operating temperature via the controller. The display panels respectively display a plurality of colors, the colors are different from each other, the controller is electrically connected to the display, and the operating temperature corresponds to one of the temperatures.

[0015] Other embodiments of the aforementioned implementation are as follows: the aforementioned operating temperature is one of an ambient temperature around these display panels and a panel temperature of these display panels.

[0016] Other embodiments of the foregoing implementation are as follows: The driving method of the aforementioned display device further includes acquiring the operating temperature through a temperature sensor and transmitting the operating temperature to a controller. The temperature sensor is configured to correspond to the display and is electrically connected to the controller.

[0017] Other embodiments of the foregoing implementation are as follows: any of the aforementioned display panels is a cholesteric liquid crystal panel, and the colors include a blue, a green and a red.

[0018] Other embodiments of the aforementioned implementation are as follows: The aforementioned parameters include multiple cycle times, multiple cycle numbers, and multiple driving voltage differences, one of these cycle times, one of these cycle numbers, and one of these driving voltage differences correspond to one of these temperatures and one of these colors.

[0019] Other embodiments of the aforementioned implementation are as follows: The aforementioned driving method for the display device further includes obtaining a full-page scanning operation time interval through a controller, and driving multiple scan lines of a screen of the display according to a start time asynchrony condition within the full-page scanning operation time interval. The start time asynchrony condition includes multiple start time asynchronies corresponding to a portion of the driving voltage differences of these temperatures.

[0020] Other embodiments of the aforementioned implementation are as follows: The aforementioned step of driving the scan lines of the display screen based on the asynchronous start time condition includes performing a scan line driving operation, which includes driving the display panel based on a portion of the cycle time, a portion of the cycle number, and a portion of the driving voltage difference corresponding to the temperature, to complete the driving of one of the scan lines of the screen; and confirming whether the driving of all the scan lines of the screen has been completed, generating a confirmation result, and determining whether to perform multiple scan line driving operations corresponding to the remaining portion of the scan lines or to perform a driving voltage difference zeroing operation based on the confirmation result. The driving voltage difference zeroing operation includes setting at least one of the driving voltage differences to 0.

[0021] Other embodiments of the aforementioned implementation are as follows: The aforementioned driving method for the display device further includes obtaining a full-page scanning operation time interval through a controller, and driving multiple scan lines of a screen of the display according to a start time synchronization condition within the full-page scanning operation time interval. The start time synchronization condition includes multiple start time synchronizations corresponding to a portion of the driving voltage differences of these temperatures.

[0022] Other embodiments of the aforementioned implementation are as follows: The aforementioned step of driving the scan lines of the display screen according to the start time synchronization condition includes: performing a scan line driving operation, the scan line driving operation including: driving the display panels according to a portion of the cycle time, a portion of the cycle number, and a portion of the driving voltage difference corresponding to the temperature, to complete the driving of one of the scan lines of the screen; and when the driving of all the display panels of the colors on the scan lines of the screen is completed, performing a driving voltage difference zeroing operation within a preset time interval; and confirming whether the driving of all the scan lines of the screen is completed and generating a confirmation result, and determining whether to perform multiple scan line driving operations corresponding to the remaining portion of the scan lines or to perform a driving voltage difference zeroing operation based on the confirmation result. The driving voltage difference zeroing operation includes setting at least one of the driving voltage differences to 0.

[0023] Other embodiments of the aforementioned implementation are as follows: The aforementioned step of driving the scan lines of the display screen according to the start time synchronization condition includes: performing a scan line driving operation, the scan line driving operation including driving the display panels according to a portion of the cycle time, a portion of the cycle number, and a portion of the driving voltage difference corresponding to the temperature, to complete the driving of one of the scan lines of the screen; and when the driving of all the display panels of the colors on the scan lines of the screen is completed, confirming whether the driving of all the scan lines of the screen is completed and generating a confirmation result, and determining whether to perform multiple scan line driving operations corresponding to the remaining portion of the scan lines or to perform a driving voltage difference zeroing operation based on the confirmation result. The driving voltage difference zeroing operation includes setting at least one of the driving voltage differences to 0.

[0024] Therefore, the display device and driving method of the present invention achieve the optical effects of the liquid crystal characteristics of each RGB by using several independent driving modes and coordinating two types of synchronous and asynchronous scanning lines for red (Red; abbreviated as R), green (Green; abbreviated as G) and blue (Blue; abbreviated as B), thereby obtaining better optical and sensory performance. Attached Figure Description

[0025] Figure 1 is a schematic diagram showing the structure of a cholesterol liquid crystal display;

[0026] Figure 2 is a schematic diagram showing the reflectivity of a cholesterol liquid crystal display relative to the driving voltage;

[0027] Figure 3A is a schematic diagram showing the reflectivity of the white and green display panels of a cholesterol liquid crystal display relative to temperature;

[0028] Figure 3B is a schematic diagram showing the reflectance of the red, blue, and black display panels of a cholesterol liquid crystal display relative to temperature;

[0029] Figure 4 is a schematic diagram illustrating a display device according to a first embodiment of the present invention;

[0030] Figure 5 is a schematic diagram of the drive waveform of the present invention, showing that the scan line drive start time is asynchronous with RGB and the parameters are set with the first temperature.

[0031] Figure 6 is a schematic diagram of the drive waveform of the present invention, showing that the scan line drive start time is asynchronous with RGB and the second temperature setting parameter is used.

[0032] Figure 7 is a schematic diagram of the first drive waveform of the present invention, showing the RGB synchronization of the scan line drive start time and the first temperature setting parameter.

[0033] Figure 8 is a schematic diagram of the second drive waveform of the present invention, showing the RGB synchronization of the scan line drive start time and the second temperature setting parameter.

[0034] Figure 9 is a schematic diagram of the third drive waveform of the present invention, showing the RGB synchronization of the scan line drive start time and the parameter set with the first temperature.

[0035] Figure 10 is a schematic diagram of the fourth drive waveform of the present invention, showing the scan line drive start time RGB synchronization and the second temperature setting parameter; and

[0036] Figure 11 is a flowchart illustrating a driving method for a display device according to a second embodiment of the present invention.

[0037]

List of Labels

[0038] Several embodiments of the present invention will now be described with reference to the accompanying drawings. For clarity, many practical details will be set forth in the following description. However, it should be understood that these practical details are not intended to limit the invention. That is, in some embodiments of the invention, these practical details are not essential. Furthermore, for the sake of simplicity in the drawings, some conventionally used structures and elements will be shown in a simple schematic manner; and repeated elements may be denoted by the same reference numerals.

[0039] Furthermore, in this document, when a component (or unit or module, etc.) is "connected" to another component, it can mean that the component is directly connected to the other component, or that the component is indirectly connected to the other component, meaning that there is another component between the component and the other component. Only when it is explicitly stated that a component is "directly connected" to another component does it indicate that there is no other component between the component and the other component. The terms "first," "second," and "third" are only used to describe different components and do not limit the components themselves; therefore, "first component" can also be referred to as "second component." Moreover, the combinations of components / units / circuits in this document are not combinations generally known, conventional, or existing in this field. Whether the component / unit / circuit itself is existing cannot be used to determine whether its combination relationship is easily accomplished by someone of ordinary skill in the art.

[0040] Please refer to Figures 1, 2, 3A, and 3B together. Figure 1 is a schematic diagram showing the structure of the cholesteric liquid crystal display 10; Figure 2 is a schematic diagram showing the reflectivity of the cholesteric liquid crystal display 10 relative to the driving voltage; Figure 3A is a schematic diagram showing the reflectivity of the white and green (G) display panels 14 of the cholesteric liquid crystal display 10 relative to temperature; and Figure 3B is a schematic diagram showing the reflectivity of the red (R) display panel 12, blue (B) display panel 16, and dark display panel of the cholesteric liquid crystal display 10 relative to temperature. The cholesteric liquid crystal display 10 includes a red display panel 12, a green display panel 14, and a blue display panel 16, which are composed of red (R), green (G), and blue (B) primary color liquid crystal glass, as shown in Figure 1. When light passes through the glass, the liquid crystal materials in each of the RGB glass layers reflect light of different color wavelengths to form an image. Cholesterol liquid crystals exhibit corresponding reflectivities with different driving voltages, known as reflectivity-voltage (RV) curves. Different colors of RGB have different RV curves, as shown in Figure 2. There is a significant difference in reflectivity between RGB values ​​when the driving voltages V1 and V2 are applied.

[0041] Furthermore, different temperatures (such as panel temperature) also affect the reflectivity of cholesteric liquid crystals, as shown in Figures 3A and 3B. The relationship between the reflectivity of the white display panel and temperature can be represented by linear equation LE1; the relationship between the reflectivity of the green display panel 14 and temperature can be represented by linear equation LE2; the relationship between the reflectivity of the blue display panel 16 and temperature can be represented by linear equation LE3; the relationship between the reflectivity of the red display panel 12 and temperature can be represented by linear equation LE4; and the relationship between the reflectivity of the black display panel and temperature can be represented by linear equation LE5. "x" and "y" represent the values ​​on the horizontal and vertical axes, respectively. The aforementioned linear equations LE1, LE2, LE3, LE4, and LE5 can have different relationship curves depending on the specific liquid crystal material. As can be seen from the above, the characteristics of the RGB primary colors are different. To obtain the best reflectivity effect, the R / G / B independent parameters can be set according to different temperature conditions. Therefore, this invention proposes an independent driving method, which allows the RGB panel to achieve the maximum optical effect, thus solving the side effect problem of inconsistent RGB characteristic curves in existing systems. Details of various embodiments of this invention will be described below.

[0042] Please refer to Figures 1 and 4 together, where Figure 4 is a schematic diagram illustrating a display device 100 according to a first embodiment of the present invention. The display device 100 includes a display 110 and a controller 120. The display 110 includes multiple display panels, each displaying multiple colors, which are distinct from each other. The controller 120 is electrically connected to the display 110. The controller 120 obtains an operating temperature corresponding to each of the display panels and sets multiple parameters corresponding to the multiple temperatures. These parameters are independent of each other and correspond to the display panels. The temperatures are distinct from each other, and these temperatures and parameters form a parameter group. The controller 120 selects a portion of the parameters corresponding to one of these temperatures from the parameter group to drive the display panel based on the operating temperature. Therefore, the display device 100 of the present invention sets independent driving parameters according to different liquid crystal characteristics, enabling the RGB display panels to achieve their maximum optical effects, resulting in better optical and sensory performance, and solving the side effect problem of inconsistent color characteristic curves in the prior art.

[0043] Specifically, the display 110 of Figure 4 can be the cholesteric liquid crystal display 10 of Figure 1. Any of the display panels of the display 110 is a cholesteric liquid crystal panel, and the colors include blue, green, and red. The controller 120 includes a memory 122 and a processor 124. The memory 122 is connected to the processor 124. Furthermore, the aforementioned operating temperature can be one of an ambient temperature surrounding the display panels and a panel temperature of the display panels. The display device 100 also includes a temperature sensor 130, which is disposed corresponding to the display 110 and electrically connected to the controller 120. The temperature sensor 130 is used to acquire the operating temperature and transmit it to the controller 120. In one embodiment, the operating temperature can be input to the controller 120 from an external source, or the controller 120's memory 122 can store it internally. The aforementioned temperatures can be between 0 and 40 degrees Celsius, with each value representing a 0.5-degree increment (i.e., 0 degrees, 0.5 degrees, 1 degree, ..., 39 degrees, 39.5 degrees, 40 degrees). However, the present invention is not limited to the above.

[0044] These parameters include multiple cycle times, multiple cycle numbers, and multiple voltage differences. One of these cycle times, one of these cycle numbers, and one of these voltage differences corresponds to one of these temperatures and one of these colors. For example, the cycle time corresponding to the first temperature and the red color can be represented by "R_cycle_time_temp_1"; the cycle time corresponding to the second temperature and the red color can be represented by "R_cycle_time_temp_2"; the cycle time corresponding to the first temperature and the green color can be represented by "G_cycle_time_temp_1"; the cycle time corresponding to the second temperature and the green color can be represented by "G_cycle_time_temp_2"; the cycle time corresponding to the first temperature and the blue color can be represented by "B_cycle_time_temp_1"; the cycle time corresponding to the second temperature and the blue color can be represented by "B_cycle_time_temp_2"; and so on.

[0045] Furthermore, the cycle number corresponding to the first temperature and red color can be represented by "R_cycle_N_temp_1"; the cycle number corresponding to the second temperature and red color can be represented by "R_cycle_N_temp_2"; the cycle number corresponding to the first temperature and green color can be represented by "G_cycle_M_temp_1"; the cycle number corresponding to the second temperature and green color can be represented by "G_cycle_M_temp_2"; the cycle number corresponding to the first temperature and blue color can be represented by "B_cycle_P_temp_1"; the cycle number corresponding to the second temperature and blue color can be represented by "B_cycle_P_temp_2"; and so on.

[0046] Furthermore, the driving voltage difference corresponding to the first temperature and the red color can be represented by "Vol_r_temp_1"; the driving voltage difference corresponding to the second temperature and the red color can be represented by "Vol_r_temp_2"; the driving voltage difference corresponding to the first temperature and the green color can be represented by "Vol_g_temp_1"; the driving voltage difference corresponding to the second temperature and the green color can be represented by "Vol_g_temp_2"; the driving voltage difference corresponding to the first temperature and the blue color can be represented by "Vol_b_temp_1"; the driving voltage difference corresponding to the second temperature and the blue color can be represented by "Vol_b_temp_2"; and so on.

[0047] Please refer to Figures 1, 4, and 5 together, where Figure 5 is a schematic diagram of the drive waveform showing the RGB asynchronous start time of the scan line drive according to the present invention with a first temperature (temp_1) as the setting parameter. The display 110 has a screen with multiple scan lines (L_1 to L_End). The controller 120 acquires a full-page scan action time interval FSA (Frame Scan Active) and drives these scan lines of the screen according to a start time asynchronous condition within the full-page scan action time interval FSA. The start time asynchronous condition includes multiple start time asynchronouss of these drive voltage differences Vol_r, Vol_g, and Vol_b corresponding to these temperatures (such as the first temperature (temp_1)).

[0048] Specifically, the controller 120 performs the following operations during the full-page scan operation time interval FSA: performing a scan line drive operation and a confirmation operation. The scan line drive operation includes driving the display panel according to the partial cycle time R_c_t (R_cycle_time_temp_1), G_c_t (G_cycle_time_temp_1), B_c_t (B_cycle_time_temp_1), partial cycle number R_c_N (R_cycle_N_temp_1), G_c_M (G_cycle_N_temp_1), B_c_P (B_cycle_N_temp_1) corresponding to these temperatures, and partial drive voltage differences Vol_r (Vol_r_temp_1), Vol_g (Vol_g_temp_1), Vol_b (Vol_b_temp_1) to complete the driving of one of these scan lines of the screen (such as scan line L_1). The confirmation operation involves confirming whether the driving of all scan lines of the screen has been completed, generating a confirmation result, and determining whether to execute multiple scan line driving operations corresponding to the remaining parts of these scan lines (such as scan lines L_2, L_3, ..., L_End) or to execute a drive voltage difference zeroing operation based on the confirmation result. The drive voltage difference zeroing operation involves setting at least one of the partial drive voltage differences Vol_r, Vol_g, and Vol_b to 0.

[0049] In other words, the scan line driving operation executes the driving of the first scan line L_1, and the confirmation result is used to confirm whether the last scan line L_End has been completed. The controller 120 scans sequentially within the full-page scan operation time interval FSA (i.e., drives scan lines L_1, L_2, L_3, ..., L_End sequentially). For example, regarding the signal R_S (which represents the drive output enable R_SDOE; if signal R_S is High, the output drive voltage difference Vol_r is output; if signal R_S is Low, the output drive voltage difference Vol_r is 0) and waveform R_W driving the red display panel 12, when signal R_S is High, the controller 120 outputs the drive voltage difference Vol_r. The driving time for each cycle is the cycle time R_c_t, and the number of drives is the number of cycles R_c_N, thus completing one scan line L_1. Next, the scan lines are driven in sequence, driving scan lines L_2, L_3, ..., L_End in succession. Finally, when the scan reaches the last scan line L_End, the signal R_S is set to Low and outputs 0V, maintaining this value until the end of the full-page scan operation time interval FSA. Similarly, the green display panel 14 is driven by the signal G_S and waveform G_W, while the blue display panel 16 is driven by the signal B_S and waveform B_W. This allows for asynchronous independent driving of RGB (RGB becomes asynchronous starting from scan line L_2).

[0050] Please refer to Figures 1, 4, 5, and 6 together. Figure 6 is a schematic diagram of the drive waveform of the present invention, showing that the scan line drive start time is asynchronous (RGB) and the parameter is set with a second temperature (temp_2). The controller 120 scans sequentially during the full-page scan operation time interval FSA (i.e., drives scan lines L_1, L_2, L_3, ..., L_End sequentially). For example, regarding the signal B_S and waveform B_W driving the blue display panel 16, when signal B_S is High, the controller 120 outputs a drive voltage difference Vol_b. The driving time for each cycle is the cycle time B_c_t, and the number of drives is the cycle number B_c_P, thus completing one scan line L_1. Next, the scan lines are driven in sequence, driving scan lines L_2, L_3, ..., L_End. Finally, when the scan reaches the last scan line L_End, the signal B_S is set to Low and outputs 0V, which is maintained until the end of the full-page scan operation time interval FSA. Similarly, the green display panel 14 is driven by the signal G_S and waveform G_W, while the red display panel 12 is driven by the signal R_S and waveform R_W. This allows for asynchronous independent driving of the RGB displays.

[0051] Please refer to Figures 1, 4, 7, and 8 together, where Figure 7 is a schematic diagram of a first driving waveform showing the RGB synchronization of the scan line drive start time of the present invention with a first temperature (temp_1) as the setting parameter; and Figure 8 is a schematic diagram of a second driving waveform showing the RGB synchronization of the scan line drive start time of the present invention with a second temperature (temp_2) as the setting parameter. The display 110 has a screen with multiple scan lines. The controller 120 acquires a full-page scan operation time interval (FSA) and drives these scan lines of the screen according to a start time synchronization condition within the full-page scan operation time interval (FSA). The start time synchronization condition includes multiple start time synchronizations corresponding to these driving voltage differences Vol_r, Vol_g, and Vol_b at these temperatures (such as the first temperature or the second temperature).

[0052] Specifically, the controller 120 acquires a preset time interval LI (Line Interval) and performs the following operations within the full-page scan operation time interval FSA: performing a scan line drive operation and a confirmation operation. The scan line drive operation includes driving the display panel based on partial cycle times R_c_t, G_c_t, B_c_t, partial cycle numbers R_c_N, G_c_M, B_c_P, and partial drive voltage differences Vol_r, Vol_g, Vol_b corresponding to these temperatures, to complete the driving of one of these scan lines (e.g., scan line L_1) of the image; and when the driving of all colors of the display panel on these scan lines of the image is completed, a drive voltage difference zeroing operation is performed within the subsequent preset time interval LI. The confirmation operation includes confirming whether the driving of all scan lines of the image has been completed, generating a confirmation result, and determining, based on the confirmation result, whether to perform multiple scan line drive operations corresponding to the remaining parts of these scan lines (e.g., scan lines L_2, L_3, ..., L_End) or to perform a drive voltage difference zeroing operation. The drive voltage difference zeroing operation involves setting at least one of the partial drive voltage differences Vol_r, Vol_g, and Vol_b to 0.

[0053] In other words, the controller 120 scans sequentially at intervals within the full-page scan operation time interval FSA (i.e., sequentially driving scan line L_1, maintaining for a preset time interval LI, driving scan line L_2, maintaining for a preset time interval LI, driving scan line L_3, ..., driving scan line L_End). For example, regarding the signal R_S and waveform R_W driving the red display panel 12, when signal R_S is High, the controller 120 outputs a driving voltage difference Vol_r. The driving time for each cycle is the cycle time R_c_t, and the number of cycles is the number of cycles R_c_N, thus completing one scan line L_1. Then, after completing one scan line L_1, signal R_S becomes Low, causing the driving voltage difference Vol_r output to be 0V. Then, after R / G / B have all completed one scan line L_1, they are maintained for a period of time (i.e., the preset time interval LI), during which time signal R_S remains Low, causing the driving voltage difference Vol_r output to remain 0V. Next, after the preset time interval LI ends, the next scan line L_2 is driven, and then it is kept at zero for a period of time. This process is repeated to scan each scan line in sequence until the last scan line L_End, at which point the entire page scan operation time interval FSA ends. In this way, independent driving of RGB synchronization can be achieved.

[0054] Please refer to Figures 1, 4, 9, and 10 together. Figure 9 is a schematic diagram of the third driving waveform of the present invention, showing the scan line drive start time RGB synchronized and set with a first temperature (temp_1) as the parameter; and Figure 10 is a schematic diagram of the fourth driving waveform of the present invention, showing the scan line drive start time RGB synchronized and set with a second temperature (temp_2) as the parameter. The controller 120 performs the following operations during the full-page scan operation time interval FSA: performing a scan line drive operation and a confirmation operation. The scan line drive operation includes driving the display panel according to a portion of the cycle time R_c_t, G_c_t, B_c_t, a portion of the cycle number R_c_N, G_c_M, B_c_P, and a portion of the drive voltage difference Vol_r, Vol_g, Vol_b corresponding to these temperatures, to complete the driving of one of the scan lines of the screen (such as scan line L_1). The confirmation operation involves verifying whether the driving of all scan lines on the screen has been completed when all colors of the display panel have been driven, generating a confirmation result, and determining whether to execute multiple scan line driving operations for the remaining parts of these scan lines (such as scan lines L_2, L_3, ..., L_End) or to perform a drive voltage difference zeroing operation based on the confirmation result. The drive voltage difference zeroing operation involves setting at least one of the partial drive voltage differences Vol_r, Vol_g, and Vol_b to 0.

[0055] In other words, the controller 120 scans sequentially within the full-page scan operation time interval FSA (i.e., drives scan lines L_1, L_2, L_3, ..., L_End sequentially). For example, regarding the signal R_S and waveform R_W driving the red display panel 12, when signal R_S is High, the controller 120 outputs a drive voltage difference Vol_r. The driving time for each cycle is the cycle time R_c_t, and the number of drives is the number of cycles R_c_N, thus completing one scan line L_1. Then, after completing one scan line L_1, signal R_S becomes Low, causing the drive voltage difference Vol_r to output 0V. Then, after R / G / B have each completed one scan line L_1, the next scan line L_2 is driven, and so on, scanning each scan line sequentially until the last scan line L_End, at which point the full-page scan operation time interval FSA ends. This allows for independent driving of RGB synchronization.

[0056] Please refer to Figures 1, 4, and 11 together, where Figure 11 is a flowchart illustrating the driving method S0 of the display device 100 according to the second embodiment of the present invention. The driving method S0 includes steps S02, S04, S06, and S08. Step S02 includes providing a display device 100, wherein the display device 100 includes a display 110 and a controller 120. The display 110 may be a cholesteric liquid crystal display 10, as shown in Figures 1 and 4; its structural details will not be described further. Step S04 includes obtaining an operating temperature corresponding to a plurality of display panels of the display 110 through the controller 120. Step S06 includes setting a plurality of parameters corresponding to the plurality of temperatures through the controller 120, wherein these parameters are independent of each other and correspond to the plurality of display panels, the temperatures are different from each other, and these temperatures and these parameters form a parameter group. Step S08 includes driving the display panel by selecting a portion of the parameters corresponding to one of the temperatures from the parameter group according to the operating temperature through the controller 120. Therefore, the driving method S0 of the display device 100 of the present invention sets independent driving parameters according to different liquid crystal characteristics, which enables the RGB display panels to exert their maximum optical effects, so as to obtain better optical and sensory performance, and solve the side effect problem of inconsistent color characteristic curves in the prior art.

[0057] Please refer to Figures 4, 5, 6, 7, 8, 9, 10, and 11. The driving method S0 of the display device 100, combined with the driving method in Figure 5 or 6, can achieve independent, asynchronous RGB driving. The driving method S0 of the display device 100, combined with the driving method in Figure 7 or 8, can achieve one independent, synchronous RGB driving. The driving method S0 of the display device 100, combined with the driving method in Figure 9 or 10, can also achieve another independent, synchronous RGB driving. Furthermore, in Figures 5, 7, and 9, the cycle times R_c_t, G_c_t, B_c_t, the number of cycles R_c_N, G_c_M, B_c_P, and the driving voltage differences Vol_r, Vol_g, and Vol_b are set at a first temperature (temp_1). In Figures 6, 8 and 10, the cycle time R_c_t, G_c_t, B_c_t, the number of cycles R_c_N, G_c_M, B_c_P, and the driving voltage difference Vol_r, Vol_g, Vol_b are set with the second temperature (temp_2).

[0058] As can be seen from the above embodiments, the present invention has the following advantages: First, by setting independent driving parameters according to different liquid crystal characteristics, display panels of different colors can be driven independently and adaptively, thus solving the side effect problem of inconsistent color characteristic curves in the prior art. Second, by using several independent driving methods, and combining RGB scan line synchronous and scan line asynchronous types, the optical effects of the individual liquid crystal characteristics of RGB can be achieved, thereby obtaining better optical and sensory performance.

[0059] Although the present invention has been disclosed above with reference to embodiments, it is not intended to limit the present invention. Any person skilled in the art can make various changes and modifications without departing from the concept and scope of the present invention. Therefore, the scope of protection of the invention shall be determined by the claims.

Claims

1. A display device, characterized by comprising: The display comprises a plurality of display panels respectively displaying a plurality of colors different from each other; and A controller electrically connected to the display, the controller obtains an operating temperature corresponding to the plurality of display panels, and sets a plurality of parameters corresponding to a plurality of temperatures, the plurality of parameters are independent of each other and correspond to the plurality of display panels, the plurality of temperatures are different from each other, the plurality of temperatures and the plurality of parameters form a parameter group; Wherein, the operating temperature corresponds to one of the plurality of temperatures, the controller selects the part of the plurality of parameters corresponding to the one of the plurality of temperatures in the parameter group according to the operating temperature to drive the plurality of display panels. The operating temperature is one of an ambient temperature around the plurality of display panels and a panel temperature of the plurality of display panels.

2. The display device of claim 1, wherein, Also comprising:

3. The display device of claim 1, wherein A temperature sensor corresponding to the display and electrically connected to the controller, the temperature sensor is used to obtain the operating temperature and transmit the operating temperature to the controller. Any one of the plurality of display panels is a cholesteric liquid crystal panel, and the plurality of colors includes a blue color, a green color and a red color.

4. The display device of claim 1, wherein The plurality of parameters includes a plurality of cycle times, a plurality of cycle numbers and a plurality of driving voltage differences, one of the plurality of cycle times, one of the plurality of cycle numbers and one of the plurality of driving voltage differences correspond to one of the plurality of temperatures and one of the plurality of colors.

5. The display device of claim 1, wherein, The display has a picture with a plurality of scan lines, the controller obtains a whole page scanning operation time interval, and drives the plurality of scan lines of the picture in the whole page scanning operation time interval according to a start time asynchronous condition, the start time asynchronous condition includes a plurality of start time asynchronies of part of the plurality of driving voltage differences corresponding to the one of the plurality of temperatures.

6. The display device of claim 5, wherein, The controller performs the following operations in the whole page scanning operation time interval:

7. The display device of claim 6, wherein Perform a scan line driving operation, the scan line driving operation includes driving the plurality of display panels according to part of the plurality of cycle times, part of the plurality of cycle numbers and part of the plurality of driving voltage differences corresponding to the one of the plurality of temperatures, to complete the driving of one of the plurality of scan lines of the picture; And Generate a confirmation result by confirming whether the driving of all the plurality of scan lines of the picture is completed, and determine whether to perform a plurality of scan line driving operations corresponding to the remaining part of the plurality of scan lines or perform a driving voltage difference zero operation according to the confirmation result; Wherein, the driving voltage difference zero operation includes setting at least one of part of the plurality of driving voltage differences to 0. The display has a picture with a plurality of scan lines, the controller obtains a whole page scan operation time interval, and drives the plurality of scan lines of the picture in the whole page scan operation time interval according to a start time synchronous condition, the start time synchronous condition includes a plurality of start time synchronizations of part of the plurality of driving voltage differences corresponding to the one of the plurality of temperatures.

8. The display device of claim 5, wherein, In the whole page scan operation time interval, the controller obtains a preset time interval and performs the following operations:

9. The display device of claim 8, wherein, ​ performing a scan line driving operation, the scan line driving operation comprising: driving the display panels according to part of the cycle times, part of the cycle numbers, and part of the driving voltage differences corresponding to the one of the temperatures to complete driving of one of the scan lines of the frame; and when driving of the display panels of all the colors on the one of the scan lines of the frame is completed, performing a driving voltage difference zeroing operation within the predetermined time interval; and generating a confirmation result by confirming whether driving of all the scan lines of the frame is completed, and determining whether to perform a plurality of the scan line driving operations corresponding to the remaining part of the scan lines or to perform the driving voltage difference zeroing operation according to the confirmation result; wherein the driving voltage difference zeroing operation comprises setting at least one of part of the driving voltage differences to 0.

10. The display device of claim 8, wherein, The controller performs the following operations in the whole-page scanning action time interval: performing a scan line driving operation, the scan line driving operation comprising driving the display panels according to part of the cycle times, part of the cycle numbers, and part of the driving voltage differences corresponding to the one of the temperatures to complete driving of one of the scan lines of the frame; and when driving of the display panels of all the colors on the one of the scan lines of the frame is completed, generating a confirmation result by confirming whether driving of all the scan lines of the frame is completed, and determining whether to perform a plurality of the scan line driving operations corresponding to the remaining part of the scan lines or to perform the driving voltage difference zeroing operation according to the confirmation result; wherein the driving voltage difference zeroing operation comprises setting at least one of part of the driving voltage differences to 0.

11. A driving method of a display device, comprising: comprising: providing a display device, wherein the display device comprises a display and a controller; obtaining, by the controller, an operating temperature of display panels of the display; setting, by the controller, parameters corresponding to a plurality of temperatures, wherein the parameters are independent of each other and correspond to the display panels, the temperatures are different from each other, the temperatures and the parameters form a parameter group; and driving, by the controller, the display panels according to part of the parameters corresponding to the one of the temperatures in the parameter group according to the operating temperature; wherein the display panels respectively display a plurality of colors, the colors are different from each other, the controller is electrically connected to the display, and the operating temperature corresponds to the one of the temperatures.

12. The driving method of a display device according to claim 11, wherein The operating temperature is one of an ambient temperature around the display panels and a panel temperature of the display panels.

13. The driving method of a display device according to claim 11, wherein further comprising: obtaining, by a temperature sensor, the operating temperature and transmitting the operating temperature to the controller; wherein the temperature sensor is arranged corresponding to the display and is electrically connected to the controller.

14. The driving method of a display device according to claim 11, wherein Any of the display panels is a cholesteric liquid crystal panel, and the colors comprise a blue color, a green color, and a red color.

15. The driving method of a display device according to claim 11, wherein The plurality of parameters include a plurality of cycle times, a plurality of cycle numbers, and a plurality of driving voltage differences, one of the plurality of cycle times, one of the plurality of cycle numbers, and one of the plurality of driving voltage differences corresponding to one of the plurality of temperatures and one of the plurality of colors.

16. The driving method of a display device according to claim 15, wherein Also comprising: an interval of a whole page scanning operation time is obtained by the controller, and a plurality of scan lines of a page of the display is driven according to a start time asynchronous condition in the interval of the whole page scanning operation time; wherein the start time asynchronous condition includes a plurality of start time asynchronies of the plurality of driving voltage differences corresponding to the one of the plurality of temperatures.

17. The driving method of a display device according to claim 16, wherein The step of driving the plurality of scan lines of the page of the display according to the start time asynchronous condition includes: performing a scan line driving operation, the scan line driving operation including driving the plurality of display panels according to the plurality of cycle times corresponding to the one of the plurality of temperatures, the plurality of cycle numbers, and the plurality of driving voltage differences to complete driving of one of the plurality of scan lines of the page; and determining whether to perform a plurality of the scan line driving operation corresponding to a remaining portion of the plurality of scan lines or to perform a driving voltage difference zeroing operation according to a determination result generated by confirming whether driving of all of the plurality of scan lines of the page is completed; wherein the driving voltage difference zeroing operation includes setting at least one of the plurality of driving voltage differences to 0.

18. The driving method of a display device according to claim 15, wherein Also comprising: an interval of a whole page scanning operation time is obtained by the controller, and a plurality of scan lines of a page of the display is driven according to a start time asynchronous condition in the interval of the whole page scanning operation time; wherein the start time asynchronous condition includes a plurality of start time asynchronies of the plurality of driving voltage differences corresponding to the one of the plurality of temperatures.

19. The driving method of a display device according to claim 18, wherein The step of driving the plurality of scan lines of the page of the display according to the start time asynchronous condition includes: performing a scan line driving operation, the scan line driving operation including driving the plurality of display panels according to the plurality of cycle times corresponding to the one of the plurality of temperatures, the plurality of cycle numbers, and the plurality of driving voltage differences to complete driving of one of the plurality of scan lines of the page; and performing a driving voltage difference zeroing operation within a preset time interval when driving of the plurality of display panels of all of the plurality of colors on the one of the plurality of scan lines of the page is completed; and determining whether to perform a plurality of the scan line driving operation corresponding to a remaining portion of the plurality of scan lines or to perform the driving voltage difference zeroing operation according to a determination result generated by confirming whether driving of all of the plurality of scan lines of the page is completed; wherein the driving voltage difference zeroing operation 20. The driving method of a display device according to claim 18, wherein includes setting at least one of the plurality of driving voltage differences to 0. The step of driving the plurality of scan lines of the page of the display according to the start time asynchronous condition includes: performing a scan line driving operation, which comprises driving the display panel of a color according to a part of the plurality of cycle times corresponding to the part of the plurality of temperatures, a part of the plurality of cycle numbers, and a part of the plurality of driving voltage differences, to complete driving of one of the plurality of scan lines of the picture; and when driving of the display panel of the color on the one of the plurality of scan lines of the picture is completed, determining whether driving of all of the plurality of scan lines of the picture is completed to generate a determination result, and determining whether to perform a plurality of the scan line driving operation corresponding to the remaining part of the plurality of scan lines or to perform the driving voltage difference zeroing operation according to the determination result; wherein the driving voltage difference zeroing operation comprises setting at least one of the part of the plurality of driving voltage differences to 0.

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