Display apparatus and drive method therefor

Abstract

A display apparatus (100, 200) and a drive method (300) for the display apparatus (100, 200). The display apparatus (100, 200) comprises a display panel (110, 210), a temperature sensing module (120, 220), a timing control module (130, 230) and a drive module (140, 240); the display panel (110, 210) comprises row electrodes (GL) and column electrodes (SL, SL1, SL2,…, SLN-1, SLN); the temperature sensing module (120, 220) generates a temperature parameter (121, 221); the timing control module (130, 230) imports the temperature parameter (121, 221) into an image quality compensation program to output compensated image data (D2) and a timing control signal (Ena); the drive module (140, 240) outputs scanning drive signals (Dr_GL1, Dr_GL2, Dr_GL3, Dr_GL4,…, Dr_GLM-1, Dr_GLM) and data drive signals (Dr_SL1, Dr_SL2,…, Dr_SLN-1, Dr_SLN) to the row electrodes (GL) and the column electrodes (SL, SL1, SL2,…, SLN-1, SLN). Thus, the display panel (110, 210) displays compensated images, such that the image uniformity is improved.

Description

Display device and driving method thereof TECHNICAL FIELD

[0001] The present disclosure relates to a display device and a driving method thereof, and more particularly to a cholesteric liquid crystal display device and a driving method thereof. BACKGROUND

[0002] Cholesteric liquid crystal has bistable characteristics, one of which is a planar state and the other of which is a focal conic state. A cholesteric liquid crystal display (ChLCD) can maintain a display image without the need for power supply after the display image is finished. Since the effective voltage of a driving signal at the rear stage of an electrode decreases with the increase of line impedance (i.e. waveform blunting), the gray scale values presented by the front stage pixels and the rear stage pixels are inconsistent, resulting in poor uniformity of the display image. The existing solution is to use low-resistance electrodes, but this increases the manufacturing cost. In addition, since the viscosity coefficient of cholesteric liquid crystal changes with temperature, the display image presented by the cholesteric liquid crystal display at different temperatures is also affected by temperature, resulting in a final gray scale value of the display image that is not as expected.

[0003] Therefore, it is an urgent problem for the relevant industry to develop a display device and a driving method thereof that can improve the uniformity of the display image and maintain the correctness of the gray scale.

[0004] SUMMARY

[0005] The purpose of the present disclosure is to provide a display device and a driving method thereof, which senses the temperature of a display panel through a temperature sensing module, and uses a timing control module to execute a first image quality compensation program corresponding to odd-numbered row electrodes and a second image quality compensation program corresponding to even-numbered row electrodes based on temperature parameters and initial image data, respectively, thereby compensating the gray scale values in the initial image data to generate compensated image data. In this way, the display device and the driving method thereof of the present disclosure not only improve the uniformity of the display image of the front stage pixels and the rear stage pixels, but also eliminate the problem of variation in the gray scale values caused by the influence of temperature on cholesteric liquid crystal.

[0006] A display device is provided according to an embodiment of the present disclosure. The display device includes a display panel, a temperature sensing module, a timing control module, and a driving module. The display panel includes a pixel array, a plurality of row electrodes, and a plurality of column electrodes. The pixel array is composed of a plurality of pixels. The plurality of row electrodes are connected to the plurality of pixels and are grouped into a plurality of odd row electrodes and a plurality of even row electrodes. The plurality of column electrodes are connected to the plurality of pixels. The temperature sensing module is configured to sense a temperature of the display panel to generate a temperature parameter. The timing control module is configured to store a first picture quality compensation program corresponding to the plurality of odd row electrodes, a second picture quality compensation program corresponding to the plurality of even row electrodes, and receive the temperature parameter from the temperature sensing module. The timing control module is configured to input the temperature parameter and an initial image data into the first picture quality compensation program and the second picture quality compensation program to compensate a plurality of gray scale values corresponding to the plurality of pixels in the initial image data to generate a compensated image data, and output the compensated image data and a timing control signal. The driving module is configured to output a plurality of scanning driving signals to the plurality of row electrodes and a plurality of data driving signals to the plurality of column electrodes according to the compensated image data and the timing control signal received from the timing control module, respectively, so that the pixel array displays a compensated image.

[0007] Other implementations of the aforementioned embodiment include the following. The aforementioned driving module includes a first driving unit and a second driving unit. The first driving unit is electrically connected to a portion of the plurality of odd row electrodes and the plurality of column electrodes. The second driving unit is electrically connected to another portion of the plurality of even row electrodes and the plurality of column electrodes.

[0008] Other implementations of the aforementioned embodiment include the following. Each of the aforementioned odd row electrodes is divided into a plurality of odd row equal parts. The first picture quality compensation program includes a first lookup table, and the first lookup table includes a plurality of odd row compensation gray scale values corresponding to the plurality of odd row equal parts of each odd row electrode. Each of the aforementioned even row electrodes is divided into a plurality of even row equal parts. The second picture quality compensation program includes a second lookup table, and the second lookup table includes a plurality of even row compensation gray scale values corresponding to the plurality of even row equal parts of each even row electrode.

[0009] Other implementations of the aforementioned embodiment include the following. The plurality of odd row compensation gray scale values are monotonically increasing in a row direction, and the plurality of even row compensation gray scale values are monotonically decreasing in the row direction.

[0010] Other implementations of the aforementioned embodiments include the following. The aforementioned timing control module executes a first image quality compensation procedure to generate a plurality of odd row relayed gray scale values by combining the plurality of gray scale values of the plurality of pixels connected to one of the plurality of odd row electrodes in the initial image data with the plurality of odd row compensation gray scale values corresponding to the one of the plurality of odd row electrodes. The aforementioned timing control module executes a second image quality compensation procedure to generate a plurality of even row relayed gray scale values by combining the plurality of gray scale values of the plurality of pixels connected to one of the plurality of even row electrodes in the initial image data with the plurality of even row compensation gray scale values corresponding to the one of the plurality of even row electrodes.

[0011] Other implementations of the aforementioned embodiments include the following. The aforementioned first image quality compensation procedure and second image quality compensation procedure each further include a temperature compensation function. The timing control module inputs a temperature parameter to the temperature compensation function to output a temperature compensation gray scale value, and combines the plurality of odd row relayed gray scale values and the plurality of even row relayed gray scale values with the temperature compensation gray scale value to generate a plurality of odd row compensated gray scale values and a plurality of even row compensated gray scale values corresponding to the compensated image data, respectively.

[0012] Other implementations of the aforementioned embodiments include the following. The aforementioned timing control module outputs the compensated image data and timing control signals based on a dynamic driving mode or a pulse width modulation driving mode. When the timing control module outputs the compensated image data and timing control signals based on the dynamic driving mode and the temperature parameter is greater than a target temperature, the temperature compensation gray scale value is a positive value. When the timing control module outputs the compensated image data and timing control signals based on the pulse width modulation driving mode and the temperature parameter is greater than the target temperature, the temperature compensation gray scale value is a negative value.

[0013] Other implementations of the aforementioned embodiments include the following. Each of the aforementioned column electrodes is divided into a plurality of column electrode portions, and the first lookup table and the second lookup table each further include a plurality of row compensation gray scale values corresponding to the plurality of column electrode portions of each column electrode. The plurality of odd row compensation gray scale values and the plurality of row compensation gray scale values in the first lookup table form an odd row compensation matrix. The plurality of even row compensation gray scale values and the plurality of row compensation gray scale values in the second lookup table form an even row compensation matrix.

[0014] Other implementations of the aforementioned embodiments include the following. The aforementioned display panel is a cholesteric liquid crystal display panel.

[0015] According to another embodiment of the present disclosure, a driving method of a display device is provided. The display device includes a display panel, a temperature sensing module, a timing control module, and a driving module. The display panel includes a pixel array composed of a plurality of pixels, a plurality of row electrodes, and a plurality of column electrodes. The plurality of row electrodes are grouped into a plurality of odd row electrodes and a plurality of even row electrodes. The driving method of the display device includes the following steps: sensing a temperature of the display panel by the temperature sensing module to generate a temperature parameter, and transmitting the temperature parameter to the timing control module; importing the temperature parameter and an initial image data into a first image quality compensation program corresponding to the plurality of odd row electrodes and a second image quality compensation program corresponding to the plurality of even row electrodes by the timing control module to compensate a plurality of gray scale values corresponding to the plurality of pixels in the initial image data to generate a compensated image data; outputting the compensated image data and a timing control signal to the driving module by the timing control module; and outputting a plurality of scanning driving signals to the plurality of row electrodes and a plurality of data driving signals to the plurality of column electrodes according to the compensated image data and the timing control signal by the driving module, so that the pixel array displays a compensated image.

[0016] Other implementations of the foregoing embodiment include the following: outputting a part of the plurality of scanning driving signals to the plurality of odd row electrodes and a part of the plurality of data driving signals to a part of the plurality of column electrodes by a first driving unit of the driving module; and outputting another part of the plurality of scanning driving signals to the plurality of even row electrodes and another part of the plurality of data driving signals to another part of the plurality of column electrodes by a second driving unit of the driving module.

[0017] Other implementations of the foregoing embodiment include the following: each of the odd row electrodes is divided into a plurality of odd row equal parts. The first image quality compensation program includes a first lookup table, and the first lookup table includes a plurality of odd row compensation gray scale values corresponding to the plurality of odd row equal parts of each odd row electrode. Each of the even row electrodes is divided into a plurality of even row equal parts. The second image quality compensation program includes a second lookup table, and the second lookup table includes a plurality of even row compensation gray scale values corresponding to the plurality of even row equal parts of each even row electrode.

[0018] Other implementations of the foregoing embodiment include the following: the plurality of odd row compensation gray scale values are monotonically increasing in a row direction, and the plurality of even row compensation gray scale values are monotonically decreasing in the row direction.

[0019] Other embodiments of the aforementioned embodiment are as follows: a first image quality compensation program is executed through the aforementioned timing control module to respectively combine the multiple grayscale values ​​of the multiple pixels connected to one of the multiple odd-row electrodes in the initial image data with the multiple odd-row compensation grayscale values ​​corresponding to the multiple odd-row electrodes to generate multiple odd-row relay grayscale values; and a second image quality compensation program is executed through the aforementioned timing control module to respectively combine the multiple grayscale values ​​of the multiple pixels connected to one of the multiple even-row electrodes in the initial image data with the multiple even-row compensation grayscale values ​​corresponding to the multiple even-row electrodes to generate multiple even-row relay grayscale values.

[0020] Other embodiments of the aforementioned embodiment are as follows: The aforementioned first image quality compensation process and the second image quality compensation process both further include a temperature compensation function. A temperature parameter is input into the temperature compensation function via a timing control module to output a temperature-compensated grayscale value. The plurality of odd-row relay grayscale values ​​and the plurality of even-row relay grayscale values ​​are combined with the temperature-compensated grayscale value to generate a plurality of odd-row compensated grayscale values ​​and a plurality of even-row compensated grayscale values ​​corresponding to the compensated image data, respectively.

[0021] Other embodiments of the aforementioned embodiment are as follows: The aforementioned timing control module outputs the compensated image data and the timing control signal based on a dynamic driving mode or a pulse width modulation driving mode. When the timing control module outputs the compensated image data and the timing control signal based on the dynamic driving mode and the temperature parameter is greater than a target temperature, the temperature-compensated grayscale value is a positive value. When the timing control module outputs the compensated image data and the timing control signal based on the pulse width modulation driving mode and the temperature parameter is greater than the target temperature, the temperature-compensated grayscale value is a negative value.

[0022] Another embodiment of the aforementioned embodiment is as follows: each of the aforementioned column electrodes is divided into a plurality of column electrode portions, and both the first lookup table and the second lookup table further include a plurality of row compensation grayscale values ​​corresponding to the plurality of column electrode portions of each column electrode. The plurality of odd-numbered row compensation grayscale values ​​and the plurality of row compensation grayscale values ​​in the first lookup table form an odd-numbered row compensation matrix. The plurality of even-numbered row compensation grayscale values ​​and the plurality of row compensation grayscale values ​​in the second lookup table form an even-numbered row compensation matrix. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] FIG1 is a schematic diagram of a display device according to a first embodiment of a first embodiment of the present disclosure;

[0024] FIG2 is a block diagram illustrating a timing control module of the display device of FIG1 ;

[0025] FIG3 is a schematic diagram of a display device according to a second embodiment of the first embodiment of the present disclosure;

[0026] FIG4 is a block diagram illustrating a timing control module of the display device of FIG3 ;

[0027] FIG5A is a schematic diagram illustrating grayscale values ​​versus distances of odd-numbered rows of images of the display device of FIG1 at different temperatures;

[0028] 5B is a schematic diagram illustrating grayscale values ​​versus distances of odd-numbered rows of images of the display device of FIG. 1 after uniformity compensation at different temperatures;

[0029] 5C is a schematic diagram illustrating grayscale values ​​versus distances of odd-numbered rows of an image of the display device of FIG. 1 after uniformity and temperature compensation;

[0030] FIG6A is a schematic diagram illustrating grayscale values ​​versus distances of even-numbered rows of images of the display device of FIG1 at different temperatures;

[0031] 6B is a schematic diagram illustrating grayscale values ​​versus distances of even-numbered rows of images of the display device of FIG. 1 after uniformity compensation at different temperatures;

[0032] FIG6C is a schematic diagram illustrating grayscale values ​​versus distances of even-numbered rows of images of the display device of FIG1 after uniformity and temperature compensation; and

[0033] FIG. 7 is a schematic flow chart illustrating a method for driving a display device according to a second embodiment of the present disclosure.

[0034] : The reference numerals are as follows: 100, 200: display device 110, 210: display panel 120, 220: temperature sensing module 121, 221: temperature parameter 130, 230: timing control module 131, 231: processing unit 132, 232: storage unit 140, 240: driving module 141, 241: first driving unit 142, 242: second driving unit 143, 243: third driving unit 300: driving method of display device S01, S02, S03, S04: step D1: initial image data D2: compensated image data Dr_GL1, Dr_GL2, Dr_GL3, Dr_GL4, Dr_GL M-1 , Dr_GL M : Scan drive signals Dr_SL1, Dr_SL2, Dr_SL N-1 , Dr_SL N :Data driving signal Ena:Timing control signal F1,F2:Temperature compensation function GL:Row electrodes GL1,GL3,GL M-1 :Odd row electrodes GL2, GL4, GL M :Even row electrodes SL, SL1, SL2, SL N-1 , SL N: column electrodes P, P 11 , P 1N , P 21 , P 2N : pixel array P1: first image quality compensation program P2: second image quality compensation program T1: first lookup table T2: second lookup table X: row direction Y: column direction DETAILED DESCRIPTION

[0035] Several embodiments of the present disclosure will be explained with reference to the drawings hereafter. In order to clearly explain the present disclosure, many practical details will be explained in the following description. However, it should be understood that these practical details are not intended to limit the present disclosure. That is, these practical details are not essential in some embodiments of the present disclosure. In addition, for the sake of simplicity of the drawings, some conventional structures and elements will be shown in a simplified manner in the drawings; and the same reference numbers will be used for the same elements.

[0036] In addition, when an element (or unit or module, etc.) is "connected" or "coupled" to another element, it can mean that the element is directly connected or coupled to the other element, or that a certain element is indirectly connected or coupled to the other element, that is, there are other elements between the element and the other element. However, when it is explicitly stated that an element is "directly connected" or "directly coupled" to another element, it means that there are no other elements between the element and the other element. The terms first, second, third, etc. are used only to describe different elements, and do not limit the elements themselves. Therefore, a first element can also be referred to as a second element. Also, the combination of elements / units / circuits in this document is not a combination that is generally known, conventional, or well-known in the art, and whether the combination of elements / units / circuits is easily completed by those skilled in the art cannot be determined by whether the elements / units / circuits themselves are well-known.

[0037] Please refer to FIG. 1 and FIG. 2, wherein FIG. 1 shows a schematic diagram of a display device according to a first embodiment in a first embodiment of the present disclosure; and FIG. 2 shows a block schematic diagram of a timing control module of the display device of FIG. 1. As shown in FIG. 1 and FIG. 2, the display device 100 comprises a display panel 110, a temperature sensing module 120, a timing control module 130, and a driving module 140.

[0038] The display panel 110 can be a cholesteric liquid crystal display panel in a cholesteric liquid crystal display (ChLCD), and comprises a pixel array PA, a plurality of row electrodes GL, and a plurality of column electrodes SL. The pixel array PA is composed of a plurality of pixels P. The plurality of row electrodes GL are electrically connected to the plurality of pixels P, and are sequentially labeled as GL1, GL2, … GLn from the bottom to the top of FIG. 1. The plurality of column electrodes SL are electrically connected to the plurality of pixels P, and are sequentially labeled as SL1, SL2, … SLn from the left to the right of FIG. 1.M-1 , GL M , GL M-1 and a plurality of even row electrodes GL2, GL4, … GL M . The plurality of column electrodes SL are electrically connected to the plurality of pixels P and are sequentially labeled as SL1, SL2, … SL N-1 , SL N . The temperature sensing module 120 is configured to sense a temperature of the display panel 110 to generate a temperature parameter 121. The timing control module 130 stores a first picture quality compensation program P1 corresponding to the odd row electrodes GL1, GL3, … GL M-1 and a second picture quality compensation program P2 corresponding to the even row electrodes GL2, GL4, … GL M , and receives the temperature parameter 121 from the temperature sensing module 120 and an initial image data D1 from an external controller (not shown). The timing control module 130 inputs both the temperature parameter 121 and the initial image data D1 into the first picture quality compensation program P1 and the second picture quality compensation program P2, and executes the first picture quality compensation program P1 and the second picture quality compensation program P2 to compensate a plurality of gray scale values corresponding to the plurality of pixels P in the initial image data D1 to generate and store a compensated image data D2. In addition, the timing control module 130 outputs the compensated image data D2 and a timing control signal Ena to the driving module 140, and the timing control signal Ena can be, but is not limited to, a data latch enable signal (DLE), a start clock signal (Star Pulse Signal), or an output enable (Output Enable). The driving module 140 outputs a plurality of scan driving signals Dr_GL1 ~ Dr_GL M to the plurality of row electrodes GL and a plurality of data driving signals Dr_SL1 ~ Dr_SL N to the plurality of column electrodes SL according to the compensated image data D2 and the timing control signal Ena received from the timing control module 130, so that the pixel array PA displays a compensated image. For simplicity of explanation, only the odd row electrodes GL1, GL3 are listed below to represent all the odd row electrodes GL1, GL3, … GL M-1 and only the even row electrodes GL2, GL4 are listed below to represent all the even row electrodes GL2, GL4, … GL M .

[0039] In some embodiments, the pixel array PA can be an active matrix or a passive matrix. The pixels P in an active matrix include cholesteric liquid crystals, and the cholesteric liquid crystals can be simplified as a circuit composed of a transistor, a storage capacitor and a liquid crystal capacitor, where the transistor is a switching element, which can be but is not limited to a Thin-Film Transistor (TFT). The passive matrix also includes cholesteric liquid crystals, and thus is not described in detail. FIG. 1 shows a row direction X and a column direction Y perpendicular to each other, where the row direction X can be the horizontal direction of the display panel 110, and the column direction Y can be the vertical direction of the display panel 110. The row electrodes GL can be scan lines, and are arranged to extend along the row direction X and are electrically connected to the TFT gates (Gate) in the pixels P. The column electrodes SL can be data lines, and are arranged to extend along the column direction Y and are electrically connected to the TFT sources (Source) in the pixels P.

[0040] In some embodiments, the temperature sensing module 120 can include a contact temperature sensor or a non-contact temperature sensor, and its main function is to capture the current temperature of the display panel 110. The contact temperature sensor can be but is not limited to a Resistance Temperature Detector (RTD), and the non-contact temperature sensor can be but is not limited to an infrared temperature sensor.

[0041] In some embodiments, the timing control module 130 can be a timing controller (TCON) and include a processing unit 131 and a storage unit 132 electrically connected to the processing unit 131. The processing unit 131 can be a processor, which can be but is not limited to a digital signal processor (DSP), a micro processing unit (MPU), a central processing unit (CPU), or other electronic processors. The storage unit 132 can be a machine-readable medium, which can be but is not limited to a random access memory (RAM), a read-only memory (ROM), a compact disc read-only memory (CD-ROM), a flash memory, a hard disk drive, a magnetic tape, a floppy disk, or an optical data storage device. The storage unit 132 stores a first picture quality compensation program P1 and a second picture quality compensation program P2, both of which can be executed by the processing unit 131. The first picture quality compensation program P1 can include a uniformity compensation operation and a temperature compensation operation for operating the gray scale values of the odd row pixels (i.e., the pixels P connected to the odd row electrodes GL1, GL3). The second picture quality compensation program P2 can include a uniformity compensation operation and a temperature compensation operation for operating the gray scale values of the even row pixels (i.e., the pixels P connected to the even row electrodes GL2, GL4). In the uniformity compensation operation, the odd row compensation gray scale values for compensating the gray scale values of the odd row pixels can be monotonically increasing values in the row direction X, and the even row compensation gray scale values for compensating the gray scale values of the even row pixels can be monotonically decreasing values in the row direction X. In the temperature compensation operation, the temperature compensation values can be decreasing or increasing with the increase of the temperature parameter 121.

[0042] In some embodiments, the driving module 140 can include a plurality of driving units, which are divided into a first driving unit 141, a second driving unit 142, and a third driving unit 143, and the three driving units can be driver integrated circuits. The first driving unit 141 can be located at one side of the display panel 110 (i.e., the left side of FIG. 1) and electrically connected to the odd row electrodes GL1, GL3 and the column electrodes SL1, SL2, … SL N-1 N ​The first driving unit 141 outputs scanning driving signals Dr_GL1 to Dr_GL2 according to the compensated image data D2 and the timing control signal Ena. M Part of the odd-numbered scan drive signals (such as the scan drive signals Dr_GL1, Dr_GL3, ... Dr_GL M-1 ) to the odd-numbered row electrodes GL1 and GL3, and output data drive signals Dr_SL1 to Dr_SL N The second driving unit 142 can be located on the other side of the display panel 110 (i.e., the right side of FIG1 ) and electrically connect the even-numbered row electrodes GL2, GL4 and the column electrodes SL1, SL2, ... SL2. N-1 , SL N Another part (eg column electrode SL N-1 , SL N The second driving unit 142 outputs scanning driving signals Dr_GL1 to Dr_GL2 according to the compensated image data D2 and the timing control signal Ena. M The other part, namely the even-numbered scan drive signals (eg, scan drive signals Dr_GL2, Dr_GL4, ... Dr_GL M ) to the even-numbered row electrodes GL2 and GL4, and output data drive signals Dr_SL1 to Dr_SL N Another part (such as the data drive signal Dr_SL N-1 、Dr_SL N ) to the column electrode SL N-1 , SL N The third driving unit 143 is located between the first driving unit 141 and the second driving unit 142 and is electrically connected to the column electrodes SL1, SL2, ...SL N-1 , SL N The third driving unit 143 outputs a data driving signal for controlling the remaining column electrodes according to the compensated image data D2 and the timing control signal Ena. Therefore, the display device 100 can output the scan driving signals Dr_GL1 to Dr_GL2 from the driving module 140. M and data drive signals Dr_SL1 to Dr_SL N The pixel array PA in the display panel 110 is controlled to display the compensated image. In addition, the number of driving units in the driving module 140 and the number of column electrodes connected to each driving unit are not limited to the first embodiment of FIG. 1 , but are configured based on the resolution of the display panel 110 .

[0043] It is noted that the effective voltage of the driving signal at the rear section of the electrode decreases with the increase of the line impedance, so that the gray scale values presented by the front section pixels and the rear section pixels are inconsistent. In addition, the viscosity coefficient of the cholesteric liquid crystal changes with temperature, and the viscosity coefficient mainly affects the response time of the cholesteric liquid crystal. The lower the value, the faster the response speed. Therefore, the display panel 110 driven at different temperatures will have different gray scale performances, resulting in that the finally displayed image cannot reach the target gray scale value. In order to solve the above problems, the display device 100 of the present disclosure senses the temperature of the display panel 110 through the temperature sensing module 120, and uses the timing control module 130 to perform the first picture quality compensation program P1 and the second picture quality compensation program P2 based on the temperature parameter 121 and the initial image data D1, respectively, to compensate the gray scale values corresponding to the odd row pixels and the even row pixels in the initial image data D1. In this way, the picture uniformity of the front section pixels and the rear section pixels can be improved, and the problem of variation of the gray scale value caused by the cholesteric liquid crystal affected by temperature can be eliminated, thereby effectively improving the picture quality of the compensated image.

[0044] Please refer to FIG. 3 and FIG. 4 together, wherein FIG. 3 shows a schematic diagram of a display device according to the second embodiment of the first embodiment of the present disclosure; and FIG. 4 shows a block diagram of a timing control module of the display device of FIG. 3. As shown in FIG. 3 and FIG. 4, the display device 200 comprises a display panel 210, a temperature sensing module 220, a timing control module 230 and a driving module 240, wherein the display panel 210, the temperature sensing module 220 and the first driving unit 241, the second driving unit 242 and the third driving unit 243 of the driving module 240 are the same as the corresponding elements in the display device 100 of the first embodiment, so the details are not described again. For simplicity, only the odd row electrodes GL1, GL3 are listed below to represent all the odd row electrodes GL1, GL3, … GL M-1 , and only the even row electrodes GL2, GL4 are listed to represent all the even row electrodes GL2, GL4, … GL M .

[0045] The display device 200 differs from the display device 100 in that the first picture quality compensation program P1 stored in the storage unit 232 of the timing control module 230 can include a first lookup table T1 and a temperature compensation function F1 for compensating the gray scale values of the odd row pixels. The second picture quality compensation program P2 stored in the storage unit 232 of the timing control module 230 can include a second lookup table T2 and a temperature compensation function F2 for compensating the gray scale values of the even row pixels. Based on the distance between the driving units and the line resistance of the row electrodes GL, the voltage signals applied to the pixels P connected to the rear sections of the row electrodes GL are affected by the liquid crystal capacitance and the electrode resistance to cause waveform blunting. Therefore, the processing unit 231 of the timing control module 230 can perform uniformity compensation operations on the initial image data D1 according to the first lookup table T1 and the second lookup table T2 to offset the waveform blunting of the scan driving signals Dr_GL1~Dr_GL M The problem of waveform blunting occurs. Then, the viscosity coefficient of the cholesteric liquid crystal changes with temperature, so the display panel 210 has different gray scale performances when driven at different temperatures. Therefore, the processing unit 231 of the timing control module 230 can successively perform temperature compensation operations using the temperature compensation function F1 and the temperature compensation function F2 to eliminate the problem of variation of the gray scale values of the cholesteric liquid crystal caused by the temperature.

[0046] Each odd row electrode GL1, GL3 can be divided into a plurality of odd row equal parts, and the first lookup table T1 can include a plurality of odd row compensation gray scale values corresponding to the plurality of odd row equal parts of each odd row electrode GL1, GL3. Each even row electrode GL2, GL4 can be divided into a plurality of even row equal parts, and the second lookup table T2 can include a plurality of even row compensation gray scale values corresponding to the plurality of even row equal parts of each even row electrode GL2, GL4. The column electrodes SL1, SL2, … SL N-1 , SL N As a separation line, the odd row electrode GL1 can be divided into N equal electrode line segments, where N is a positive integer. The first lookup table T1 lists odd row compensation gray scale values corresponding to each electrode line segment of the odd row electrode GL1; in other words, the plurality of odd row compensation gray scale values can be used to compensate the gray scale values of the pixels P electrically connected to the odd row electrode GL1. The even row electrode GL2 can be divided into N equal electrode line segments, and the second lookup table T2 lists even row compensation gray scale values corresponding to each electrode line segment of the even row electrode GL2, and the plurality of even row compensation gray scale values can be used to compensate the gray scale values of the pixels P electrically connected to the even row electrode GL2.

[0047] In detail, the processing unit 231 can execute the first quality compensation program P1 to combine the plurality of gray scale values of the plurality of pixels P connected to one of the odd row electrodes GL1, GL3 in the initial image data D1 with the plurality of odd row compensation gray scale values corresponding to the one of the odd row electrodes GL1, GL3 in the first lookup table T1 to generate a plurality of odd row intermediate gray scale values. The processing unit 231 can execute the second quality compensation program P2 to combine the plurality of gray scale values of the plurality of pixels P connected to one of the even row electrodes GL2, GL4 in the initial image data D1 with the plurality of even row compensation gray scale values corresponding to the one of the even row electrodes GL2, GL4 in the second lookup table T2 to generate a plurality of even row intermediate gray scale values.

[0048] Next, the processing unit 231 inputs the temperature parameter 221 obtained from the temperature sensing module 220 into the two temperature compensation functions F1, F2 to output two temperature compensation gray scale values. In the present embodiment, the temperature compensation function F1 and the temperature compensation function F2 can be the same function, so the two temperature compensation gray scale values are the same gray scale value. The processing unit 231 combines the plurality of odd row intermediate gray scale values and the plurality of even row intermediate gray scale values with the temperature compensation gray scale values to generate a plurality of odd row compensated gray scale values and a plurality of even row compensated gray scale values corresponding to the compensated image data D2, respectively. In other words, the processing unit 231 performs the temperature compensation operation on the image data obtained after the uniformity compensation operation to compensate the temperature-affected part back to the target gray scale value. Finally, the processing unit 231 can output the compensated image data D2 and the timing control signal Ena to the driving module 240 to drive the pixel array PA to display the compensated image. In other embodiments, the processing unit 231 can first perform the temperature compensation operation on the gray scale values corresponding to each pixel P in the initial image data D1 according to the temperature compensation functions F1, F2, and then perform the uniformity compensation according to the first lookup table T1 and the second lookup table T2.

[0049] In some embodiments, the timing control module 230 can output the compensated image data D2 and the timing control signal Ena based on a dynamic drive scheme (DDS) or a pulse-width modulation (PWM) drive scheme. When the timing control module 230 outputs the compensated image data D2 and the timing control signal Ena based on the dynamic drive scheme and the temperature parameter 221 is greater than a target temperature (e.g., 25°C), the temperature compensation gray scale value can be a positive value. When the timing control module 230 outputs the compensated image data D2 and the timing control signal Ena based on the pulse-width modulation drive scheme and the temperature parameter 221 is greater than the target temperature, the temperature compensation gray scale value can be a negative value. The process of the uniformity compensation operation and the temperature compensation operation will be described in detail below by taking the odd row electrodes GL1 and the even row electrodes GL2 as examples, and the odd row electrodes GL3 and the even row electrodes GL4 are similar and will not be described again.

[0050] Please refer to FIG. 3, FIG. 4, FIG. 5A, FIG. 5B and FIG. 5C together, wherein FIG. 5A shows a gray scale value-distance diagram of the odd row images of the display device of FIG. 1 at different temperatures; FIG. 5B shows a gray scale value-distance diagram of the odd row images of the display device of FIG. 1 after uniformity compensation at different temperatures; and FIG. 5C shows a gray scale value-distance diagram of the odd row images of the display device of FIG. 1 after uniformity and temperature compensation.

[0051] In some embodiments, the column electrode SL1 of FIG. 3 can be a starting line, and the timing control module 230 outputs the compensated image data D2 and the timing control signal Ena based on the PWM scheme for the driving module 240 to drive the odd row electrodes GL1, GL3. As shown in FIG. 5A, the plurality of pixels P connected to the odd row electrodes GL1 display a plurality of odd row images based on the initial image data D1, and the gray scale values of the plurality of odd row images change with the distance between the pixels P and the starting line in the row direction X. In addition, the solid line represents the gray scale values of the odd row images of the display panel 210 at a temperature parameter 221 (e.g., 25°C). The upper dotted line represents the gray scale values of the odd row images of the display panel 210 at another temperature parameter 221 (e.g., 50°C). The lower dotted line represents the gray scale values of the odd row images of the display panel 210 at yet another temperature parameter 221 (e.g., 0°C), wherein the temperature parameter 221 of 25°C is set as the target temperature, but the present disclosure is not limited thereto.

[0052] At the temperature parameters 221 (50°C, 25°C, 0°C), the gray scale values of the pixels P 11 may be 138, 128, 118, respectively, and the gray scale values of the pixels P 1Nmay be 110, 100, 90, respectively. The aforementioned gray scale values can be obtained by measuring the display panel 210 via a charge-coupled device (CCD). In the uniformity compensation operation, the processing unit 231 of the timing control module 230 executes the first picture quality compensation program P1 to combine the plurality of gray scale values of the plurality of pixels P connected to the odd-numbered row electrodes GL1 in the initial image data D1 with the plurality of odd-numbered row compensation gray scale values corresponding to the odd-numbered row electrodes GL1 in the first lookup table T1 according to the first lookup table T1. For example, the odd-numbered row compensation gray scale value for compensating the pixel P 11 may be listed as 0, and the odd-numbered row compensation gray scale value for compensating the pixel P 1N may be listed as 28. The processing unit 231 performs a mathematical operation on the gray scale values (138, 128, 118) corresponding to the temperature parameter 221 (50°C, 25°C, 0°C) and the gray scale value (0) to generate the odd-numbered row relay gray scale values, which are the gray scale values (138, 128, 118), respectively. Similarly, the processing unit 231 performs a mathematical operation on the gray scale values (110, 100, 90) corresponding to the temperature parameter 221 (50°C, 25°C, 0°C) and the gray scale value (28) to generate another odd-numbered row relay gray scale values, which are the gray scale values (138, 128, 118), respectively, where the aforementioned mathematical operation can be, for example but not limited to, an addition operation. After the completion of the uniformity compensation operation, the odd-numbered row relay gray scale values of the pixels P connected to the odd-numbered row electrodes GL1 at the temperature parameter 221 (50°C, 25°C, 0°C) are shown in FIG. 5B. In the temperature compensation operation, the processing unit 231 continues to execute the first picture quality compensation program P1 to input the current temperature of the display device 200, i.e., the temperature parameter 221 (50°C, 25°C, 0°C), to the temperature compensation function F1 to output the temperature compensation gray scale values with the gray scale values -10, 0, 10. The processing unit 231 combines the odd-numbered row relay gray scale values, i.e., the gray scale values (138, 128, 118), with the temperature compensation gray scale values, i.e., the gray scale values (-10, 0, 10), to generate the odd-numbered row compensated gray scale values, i.e., the gray scale values (128), corresponding to the compensated image data D2. After the completion of the temperature compensation operation, the odd-numbered row compensated gray scale values of the pixels P connected to the odd-numbered row electrodes GL1 at the temperature parameter 221 (50°C, 25°C, 0°C) are shown in FIG. 5C.

[0053] It is noted that the higher the temperature of the display panel 210, the higher the reflectivity in the reflectivity-voltage curve (R-V curve) of the cholesteric liquid crystal, and the higher the gray scale value of the image. Since the gray scale value of the odd-numbered row image of the display panel 210 at 50°C (138) is greater than the gray scale value of the odd-numbered row image at 25°C (128), the image is brighter, and thus a negative temperature compensation gray scale value needs to be compensated, which is equivalent to adjusting the driving voltage (i.e., the scan driving signal Dr_GL1, Dr_GL3) output by the driving module 240 to the odd-numbered row electrodes GL1, GL3. Conversely, since the gray scale value of the odd-numbered row image of the display panel 210 at 0°C (118) is less than the gray scale value of the odd-numbered row image at 25°C (128), the image is darker, and thus a positive temperature compensation gray scale value needs to be compensated, which is equivalent to adjusting the driving voltage (i.e., the scan driving signal Dr_GL1, Dr_GL3) output by the driving module 240 to the odd-numbered row electrodes GL1, GL3.

[0054] Referring to FIGS. 3, 4, 6A, 6B, and 6C, FIG. 6A shows a gray scale value-distance diagram of the even-numbered row images of the display device of FIG. 1 at different temperatures, FIG. 6B shows a gray scale value-distance diagram of the even-numbered row images of the display device of FIG. 1 after uniformity compensation, and FIG. 6C shows a gray scale value-distance diagram of the even-numbered row images of the display device of FIG. 1 after uniformity and temperature compensation.

[0055] In some embodiments, the timing control module 230 outputs the compensated image data D2 and the timing control signal Ena based on the DDS mode for the driving module 240 to drive the even-numbered row electrodes GL2, GL4. As shown in FIG. 6A, the plurality of pixels P connected to the even-numbered row electrodes GL2 display a plurality of even-numbered row images based on the initial image data D1, and the gray scale values of the even-numbered row images change with the distance between the pixels P and the starting line in the row direction X. In addition, the solid line represents the gray scale values of the even-numbered row images of the display panel 210 at a temperature parameter 221 (e.g., 25°C). The upper dashed line represents the gray scale values of the even-numbered row images of the display panel 210 at another temperature parameter 221 (e.g., 0°C). The lower dashed line represents the gray scale values of the even-numbered row images of the display panel 210 at yet another temperature parameter 221 (e.g., 50°C), wherein the temperature parameter 221 of 25°C is set as the target temperature, but the present disclosure is not limited thereto.

[0056] At the temperature parameters 221 (0°C, 25°C, 50°C), the gray scale values of the pixels P 21 may be 110, 100, 90, respectively, and the gray scale values of the pixels P 2Nmay be 138, 128, 118, respectively. In the uniformity compensation operation, the processing unit 231 executes the second image quality compensation program P2 to combine the plurality of gray scale values of the plurality of pixels P connected to the even row electrodes GL2 in the initial image data Dl with the plurality of even row compensation gray scale values corresponding to the even row electrodes GL2 in the second lookup table T2 according to the second lookup table T2. For example, the even row compensation gray scale value for compensating the pixel P 21 in the second lookup table T2 can be listed as 28, and the even row compensation gray scale value for compensating the pixel P 2N in the second lookup table T2 can be listed as 0. The processing unit 231 mathematically operates the gray scale values (110, 100, 90) corresponding to the temperature parameters 221 (0°C, 25°C, 50°C) with the gray scale value (28) to generate the even row intermediate gray scale values, which are the gray scale values (138, 128, 118), respectively. Similarly, the processing unit 231 mathematically operates the gray scale values (138, 128, 118) corresponding to the temperature parameters 221 (0°C, 25°C, 50°C) with the gray scale value (0) to generate another even row intermediate gray scale values, which are the gray scale values (138, 128, 118), respectively. After the uniformity compensation operation is completed, the even row intermediate gray scale values of the pixels P connected to the even row electrodes GL2 under the temperature parameters 221 (0°C, 25°C, 50°C) are shown in FIG. 6B. In the temperature compensation operation, the processing unit 231 continues to execute the second image quality compensation program P2 to input the current temperature of the display device 200 (i.e., the temperature parameters 221 (0°C, 25°C, 50°C)) into the temperature compensation function F2 to output the temperature compensation gray scale values with the gray scale values -10, 0, 10, respectively. The processing unit 231 combines the even row intermediate gray scale values (i.e., the gray scale values (138, 128, 118)) with the temperature compensation gray scale values (i.e., the gray scale values (-10, 0, 10)) to generate the even row compensated gray scale values (i.e., the gray scale value (128)) corresponding to the compensated image data D2. After the temperature compensation operation is completed, the even row compensated gray scale values of the pixels P connected to the even row electrodes GL2 under the temperature parameters 221 (0°C, 25°C, 50°C) are shown in FIG. 6C.

[0057] It is noted that the higher the temperature of the display panel 210 under the driving of the DDS mode, the lower the reflectivity in the reflectivity-voltage curve (R-V Curve) of the cholesteric liquid crystal, and the lower the gray scale value of the image. Since the gray scale value (118) of the even row image of the display panel 210 at 50°C is lower than the gray scale value (128) of the even row image at 25°C (i.e. the target temperature), the image is dark, and thus the positive temperature compensation gray scale value needs to be compensated, which is equivalent to increasing the driving voltage (i.e. the scan driving signal Dr_GL2, Dr_GL4) output by the driving module 240 to the even row electrodes GL2, GL4. Conversely, since the gray scale value (138) of the even row image of the display panel 210 at 0°C is higher than the gray scale value (128) of the even row image at 25°C, the image is bright, and thus the negative temperature compensation gray scale value needs to be compensated, which is equivalent to decreasing the driving voltage (i.e. the scan driving signal Dr_GL2, Dr_GL4) output by the driving module 240 to the even row electrodes GL2, GL4. Therefore, in the uniformity compensation operation, the odd row compensation gray scale values can be monotonically increasing values along the row direction X, and the even row compensation gray scale values can be monotonically decreasing values along the row direction X. In the temperature compensation operation, the temperature compensation values can be monotonically decreasing values with the increase of the temperature parameter 221 in the PWM mode, and can be monotonically increasing values with the increase of the temperature parameter 221 in the DDS mode, and the compensated gray scale values can be in the range of 0 to 255, but the present disclosure is not limited thereto. In other embodiments, the external controller can change the odd row compensation gray scale values in the first lookup table T1 to monotonically decreasing values and change the even row compensation gray scale values in the second lookup table T2 to monotonically increasing values according to the positions of different starting lines.

[0058] On the other hand, since the column electrodes SL also have line resistance along the column direction Y, which also affects the voltage waveform of the written pixel P, each column electrode SL can be divided into a plurality of column electrode portions, and the first lookup table T1 and the second lookup table T2 can further include a plurality of row compensation gray scale values corresponding to the plurality of column electrode portions of each column electrode SL. In detail, each column electrode SL can be divided into M electrode line segments with the plurality of row electrodes GL as the dividing lines, where M is a positive integer. The first lookup table T1 and the second lookup table T2 list the row compensation gray scale values corresponding to each electrode line segment of each column electrode SL; in other words, the plurality of row compensation gray scale values can be used to compensate the gray scale values of the pixels P connected to the column electrode SL. In addition, the plurality of odd row compensation gray scale values and the plurality of row compensation gray scale values in the first lookup table T1 can form an odd row compensation matrix.

[0059] The multiple even-row compensation grayscale values ​​and the multiple row compensation grayscale values ​​in the second lookup table T2 can form an even-row compensation matrix. For example, the display panel 210 may have a resolution of 1024x768, and the pixel array PA may be divided into multiple sub-pixel arrays (128x96). Grayscale compensation can be performed by looking up the compensation grayscale values ​​for the corresponding areas in the odd-row compensation matrix (128x48) and the even-row compensation matrix (128x48). Consequently, the processing unit 231 of the timing control module 230 can perform grayscale compensation for the grayscale values ​​corresponding to each pixel P in the initial image data D1 by looking up the compensation grayscale values ​​for the corresponding areas (i.e., corresponding to each pixel P) in the odd-row compensation matrix in the first lookup table T1 and the even-row compensation matrix in the second lookup table T2, one by one, to avoid grayscale inconsistencies in the image.

[0060] In other embodiments, the temperature compensation function F1 of the first image quality compensation process P1 can be replaced by an odd-numbered row temperature compensation lookup table (as shown in Table 1 below), and the temperature compensation function F2 of the second image quality compensation process P2 can be replaced by an even-numbered row temperature compensation lookup table (as shown in Table 2 below), wherein the odd-numbered row temperature compensation lookup table can list multiple temperatures (t1~t n ) and multiple regions (A corresponding to multiple odd-numbered rows of the compensation matrix O1 ~A Om ), and the even-numbered rows of the temperature compensation lookup table can list multiple temperatures (t1~t n ) and multiple regions (A corresponding to multiple even-numbered rows of the compensation matrix E1 ~A Em In the temperature compensation operation, the processing unit 231 of the timing control module 230 can obtain the temperature compensation grayscale values ​​corresponding to different temperatures and regions of the odd-numbered row compensation matrix based on the odd-numbered row temperature compensation lookup table, such as temperature (t1) and region (A O1 ) corresponds to the temperature compensation grayscale value (J O1 Similarly, the processing unit 231 can also obtain the temperature compensation grayscale values ​​corresponding to different temperatures and regions of the even-numbered row compensation matrix based on the even-numbered row temperature compensation lookup table, such as temperature (t1) and region (A E1 ) corresponds to the temperature compensation grayscale value (J E1 ) and so on.

[0061] Table 1

[0062] Table 2

[0063] Please refer to FIG. 7, which shows a flowchart of a driving method of a display device in a second embodiment according to the present disclosure. As shown in FIG. 7, the driving method 300 of the display device can be applied to drive the display device 100 of FIG. 1 and the display device 200 of FIG. 2 to display a compensated image. Hereinafter, the display device 100 is taken as an example, which includes the display panel 110, the temperature sensing module 120, the timing control module 130, and the driving module 140. The driving method 300 of the display device can include the following steps S01, S02, S03, and S04.

[0064] In step S01, the temperature parameter 121 is generated by the temperature sensing module 120 sensing the temperature of the display panel 110 and transmitting the temperature parameter 121 to the timing control module 130.

[0065] In step S02, the temperature parameter 121 and the initial image data D1 are imported into the first quality compensation program P1 corresponding to the odd-numbered row electrodes GL1, GL3, … GLN and the second quality compensation program P2 corresponding to the even-numbered row electrodes GL2, GL4, … GLN by the processing unit 131 of the timing control module 130 to compensate the gray scale values of the pixels P in the initial image data D1 and generate the compensated image data D2, and the compensated image data D2 is stored in the storage unit 132. In step S02, the timing control module 130 can receive the initial image data D1 suitable for the size and resolution of the display panel 110 from an external controller. M-1 M In step S03, the compensated image data D2 and the timing control signal Ena are outputted by the processing unit 131 of the timing control module 130 to the driving module 140.

[0066] In step S03, the compensated image data D2 and the timing control signal Ena are outputted by the processing unit 131 of the timing control module 130 to the driving module 140.

[0067] In step S04, the driving module 140 outputs the plurality of scan driving signals Dr_GL1-Dr_GLN to the plurality of row electrodes GL and the plurality of data driving signals Dr_SL1-Dr_SLN to the plurality of column electrodes SL according to the compensated image data D2 and the timing control signal Ena, respectively. M N ​​The pixel array PA of the display panel 110 displays the compensated image. Thus, the driving method 300 of the display device of the present disclosure can sense the temperature of the display panel 110 by the temperature sensing module 120, and perform the first picture quality compensation program P1 and the second picture quality compensation program P2 based on the temperature parameter 121 and the initial image data D1, respectively, by the timing control module 130, so as to compensate the gray scale values in the initial image data D1 to generate the compensated image data D2. In this way, not only the picture uniformity of the front and rear pixels can be improved, but also the problem of the variation of the gray scale values caused by the temperature influence on the cholesteric liquid crystal can be eliminated, so as to effectively improve the uniformity of the display picture and maintain the gray scale correctness.

[0068] In summary, the display device and the driving method thereof provided by the present disclosure have the following advantages: first, the compensation gray scale values corresponding to the positions of the compensation matrix in the odd rows in the first lookup table and the compensation matrix in the even rows in the second lookup table are found to perform the uniformity compensation operation on the gray scale values corresponding to each pixel in the initial image data, so as to avoid the inconsistency of the picture gray scale and achieve the effect of improving the picture uniformity; second, the temperature compensation operation is performed on the relay gray scale values in the odd rows and the relay gray scale values in the even rows by the temperature compensation function, so as to compensate the part affected by the temperature to the target gray scale value; third, the driving unit in the driving module can be electrically connected to a part of the plurality of row electrodes and the plurality of column electrodes at the same time, so as to maximize the utilization rate of the driving unit and achieve the purpose of reducing the cost. For example, if the driving unit has 648 channel outputs, the panel resolution is 1024X768, and the configuration of the traditional display device must use 2 driving units for each of the column electrodes and the row electrodes (i.e., a total of 4 driving units are needed), while the present disclosure only needs to use 3 driving units (1024+768) / 648=2.76; fourth, by dividing the row electrodes into odd row electrodes and even row electrodes and connecting them to the display panel and the driving unit, the area of the non-display region on one side can be effectively reduced and dispersed on both sides of the display panel, which is beneficial to the symmetrical placement of the display region and the reduction of the splicing gap when the panel is spliced.

[0069] Although the present disclosure has been disclosed with the above embodiments, it is not intended to limit the present disclosure, and any person skilled in the art can make various modifications and decorations without departing from the spirit and scope of the present disclosure. Therefore, the protection scope of the present disclosure shall be subject to the appended claims.

Claims

1. A display device, characterized in that: Include: A display panel comprising: A pixel array, consisting of a plurality of pixels; a plurality of row electrodes, connected to the plurality of pixels and grouped into a plurality of odd-numbered row electrodes and a plurality of even-numbered row electrodes; and a plurality of column electrodes connected to the plurality of pixels; a temperature sensing module for sensing a temperature of the display panel to generate a temperature parameter; a timing control module storing a first image quality compensation program corresponding to the plurality of odd-numbered row electrodes and a second image quality compensation program corresponding to the plurality of even-numbered row electrodes, and receiving the temperature parameter from the temperature sensing module, the timing control module introducing the temperature parameter and initial image data into the first image quality compensation program and the second image quality compensation program to compensate for a plurality of grayscale values ​​corresponding to the plurality of pixels in the initial image data to generate compensated image data, and outputting the compensated image data and a timing control signal; as well as A driving module outputs a plurality of scan driving signals to the plurality of row electrodes and a plurality of data driving signals to the plurality of column electrodes according to the compensated image data and the timing control signal received from the timing control module, so that the pixel array displays a compensated image.

2. The display device according to claim 1, wherein The driver module includes: a first driving unit electrically connected to the odd-numbered row electrodes and a portion of the column electrodes; and A second driving unit is electrically connected to the plurality of even-numbered row electrodes and another portion of the plurality of column electrodes.

3. The display device according to claim 1, wherein Each of the odd-numbered row electrodes is divided into a plurality of odd-numbered row portions, and the first image quality compensation procedure includes a first lookup table, and the first lookup table includes a plurality of odd-numbered row compensation grayscale values ​​corresponding to the plurality of odd-numbered row portions of each of the odd-numbered row electrodes; and Each of the even-numbered row electrodes is divided into a plurality of even-numbered row portions. The second image quality compensation procedure includes a second lookup table, and the second lookup table includes a plurality of even-numbered row compensation grayscale values ​​corresponding to the plurality of even-numbered row portions of each of the even-numbered row electrodes.

4. The display device according to claim 3, wherein The plurality of odd-numbered row compensation grayscale values ​​are monotonically increasing based on a row direction, and the plurality of even-numbered row compensation grayscale values ​​are monotonically decreasing based on the row direction.

5. The display device according to claim 3, wherein The timing control module executes the first image quality compensation program to combine the plurality of grayscale values ​​of the plurality of pixels connected to one of the plurality of odd-row electrodes in the initial image data with the plurality of odd-row compensation grayscale values ​​corresponding to the one of the plurality of odd-row electrodes to generate a plurality of odd-row relay grayscale values; and The timing control module executes the second image quality compensation program to generate a plurality of even-row relay grayscale values ​​by respectively combining the plurality of grayscale values ​​of the plurality of pixels connected to one of the plurality of even-row electrodes in the initial image data with the plurality of even-row compensation grayscale values ​​corresponding to the one of the plurality of even-row electrodes.

6. The display device according to claim 5, wherein Both the first image quality compensation program and the second image quality compensation program further include a temperature compensation function. The timing control module inputs the temperature parameter into the temperature compensation function to output a temperature compensated grayscale value, and combines the multiple odd-row relay grayscale values ​​and the multiple even-row relay grayscale values ​​with the temperature compensated grayscale value to respectively generate multiple odd-row compensated grayscale values ​​and multiple even-row compensated grayscale values ​​corresponding to the compensated image data.

7. The display device according to claim 6, wherein The timing control module outputs the compensated image data and the timing control signal based on a dynamic driving mode or a pulse width modulation driving mode; Wherein, when the timing control module outputs the compensated image data and the timing control signal based on the dynamic driving mode and the temperature parameter is greater than a target temperature, the temperature compensated grayscale value is a positive value; When the timing control module outputs the compensated image data and the timing control signal based on the pulse width modulation driving mode and the temperature parameter is greater than the target temperature, the temperature compensated grayscale value is a negative value.

8. The display device according to claim 3, wherein Each column electrode is divided into a plurality of column electrode portions, and the first lookup table and the second lookup table both further include a plurality of row compensation grayscale values ​​corresponding to the plurality of column electrode portions of each column electrode. The plurality of odd row compensation grayscale values ​​and the plurality of row compensation grayscale values ​​in the first lookup table form an odd row compensation matrix, and the plurality of even row compensation grayscale values ​​and the plurality of row compensation grayscale values ​​in the second lookup table form an even row compensation matrix.

9. The display device according to claim 1, wherein The display panel is a cholesteric liquid crystal display panel.

10. A method for driving a display device, the display device comprising a display panel, a temperature sensing module, a timing control module, and a driving module, the display panel comprising a pixel array composed of a plurality of pixels, a plurality of row electrodes, and a plurality of column electrodes, the plurality of row electrodes being grouped into a plurality of odd-numbered row electrodes and a plurality of even-numbered row electrodes, wherein: The driving method of the display device comprises: The temperature sensing module senses a temperature of the display panel to generate a temperature parameter, and transmits the temperature parameter to the timing control module; The temperature parameter and an initial image data are introduced into a first image quality compensation program corresponding to the plurality of odd-numbered row electrodes and a second image quality compensation program corresponding to the plurality of even-numbered row electrodes by the timing control module to compensate for a plurality of grayscale values ​​corresponding to the plurality of pixels in the initial image data to generate compensated image data; Outputting the compensated image data and a timing control signal to the driving module through the timing control module; as well as The driving module outputs a plurality of scanning driving signals to the plurality of row electrodes and a plurality of data driving signals to the plurality of column electrodes according to the compensated image data and the timing control signal, so that the pixel array displays a compensated image.

11. The method for driving a display device according to claim 10, wherein: outputting a portion of the plurality of scan driving signals to the plurality of odd-numbered row electrodes and outputting a portion of the plurality of data driving signals to a portion of the plurality of column electrodes through a first driving unit of the driving module; and A second driving unit of the driving module outputs another portion of the scan driving signals to the even-numbered row electrodes, and outputs another portion of the data driving signals to another portion of the column electrodes.

12. The method for driving a display device according to claim 10, wherein: Each of the odd-numbered row electrodes is divided into a plurality of odd-numbered row portions, and the first image quality compensation procedure includes a first lookup table, and the first lookup table includes a plurality of odd-numbered row compensation grayscale values ​​corresponding to the plurality of odd-numbered row portions of each of the odd-numbered row electrodes; and Each of the even-numbered row electrodes is divided into a plurality of even-numbered row portions. The second image quality compensation procedure includes a second lookup table, and the second lookup table includes a plurality of even-numbered row compensation grayscale values ​​corresponding to the plurality of even-numbered row portions of each of the even-numbered row electrodes.

13. The method for driving a display device according to claim 12, wherein: The plurality of odd-numbered row compensation grayscale values ​​are monotonically increasing based on a row direction, and the plurality of even-numbered row compensation grayscale values ​​are monotonically decreasing based on the row direction.

14. The method for driving a display device according to claim 12, wherein: The timing control module executes the first image quality compensation program to generate a plurality of odd-row relay grayscale values ​​by combining the plurality of grayscale values ​​of the plurality of pixels connected to one of the plurality of odd-row electrodes in the initial image data with the plurality of odd-row compensation grayscale values ​​corresponding to the one of the plurality of odd-row electrodes; and The second image quality compensation program is executed through the timing control module to generate a plurality of even-row relay grayscale values ​​by respectively combining the plurality of grayscale values ​​of the plurality of pixels connected to one of the plurality of even-row electrodes in the initial image data with the plurality of even-row compensation grayscale values ​​corresponding to the one of the plurality of even-row electrodes.

15. The method for driving a display device according to claim 14, wherein: The first image quality compensation procedure and the second image quality compensation procedure both further include a temperature compensation function; The temperature parameter is input into the temperature compensation function through the timing control module to output a temperature compensated grayscale value, and the plurality of odd-numbered row relay grayscale values ​​and the plurality of even-numbered row relay grayscale values ​​are combined with the temperature compensated grayscale value to generate a grayscale value. A plurality of compensated grayscale values ​​of odd-numbered columns and a plurality of compensated grayscale values ​​of even-numbered columns corresponding to the compensated image data are generated respectively.

16. The method for driving a display device according to claim 15, wherein: The timing control module outputs the compensated image data and the timing control signal based on a dynamic driving mode or a pulse width modulation driving mode; Wherein, when the timing control module outputs the compensated image data and the timing control signal based on the dynamic driving mode and the temperature parameter is greater than a target temperature, the temperature compensated grayscale value is a positive value; When the timing control module outputs the compensated image data and the timing control signal based on the pulse width modulation driving mode and the temperature parameter is greater than the target temperature, the temperature compensated grayscale value is a negative value.

17. The method for driving a display device according to claim 12, wherein: Each column electrode is divided into a plurality of column electrode portions, and the first lookup table and the second lookup table both further include a plurality of row compensation grayscale values ​​corresponding to the plurality of column electrode portions of each column electrode. The plurality of odd row compensation grayscale values ​​and the plurality of row compensation grayscale values ​​in the first lookup table form an odd row compensation matrix, and the plurality of even row compensation grayscale values ​​and the plurality of row compensation grayscale values ​​in the second lookup table form an even row compensation matrix.

Images